From 5c21e9f61008e1421ee77b0bbd87228fc4d4ceaf Mon Sep 17 00:00:00 2001 From: Ilya Tregubov Date: Wed, 12 Jan 2022 13:47:34 +0200 Subject: [PATCH] MDL-71710 core: updated adapter.js to 8.0.0 --- lib/amd/build/adapter.min.js | 2 +- lib/amd/build/adapter.min.js.map | 2 +- lib/amd/src/adapter.js | 2854 ++++-------------------------- lib/thirdpartylibs.xml | 2 +- 4 files changed, 366 insertions(+), 2494 deletions(-) diff --git a/lib/amd/build/adapter.min.js b/lib/amd/build/adapter.min.js index 962870dbb30..5256b66510b 100644 --- a/lib/amd/build/adapter.min.js +++ b/lib/amd/build/adapter.min.js @@ -1,2 +1,2 @@ -function _typeof2(e){"@babel/helpers - typeof";if("function"==typeof Symbol&&"symbol"==typeof Symbol.iterator){_typeof2=function(e){return typeof e}}else{_typeof2=function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e}}return _typeof2(e)}define ("core/adapter",[],function(){return function d(c,e,t){function r(i,o){if(!e[i]){if(!c[i]){var s="function"==typeof require&&require;if(!o&&s)return s(i,!0);if(n)return n(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=e[i]={exports:{}};c[i][0].call(p.exports,function(t){var e=c[i][1][t];return r(e?e:t)},p,p.exports,d,c,e,t)}return e[i].exports}for(var n="function"==typeof require&&require,a=0;at.version){["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],n=a({},t,function(){arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]);return r.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=n[t]})}var r=e.RTCPeerConnection.prototype.addIceCandidate;e.RTCPeerConnection.prototype.addIceCandidate=function(){if(!arguments[0]){if(arguments[1]){arguments[1].apply(null)}return Promise.resolve()}if(78>t.version&&arguments[0]&&""===arguments[0].candidate){return Promise.resolve()}return r.apply(this,arguments)}};r.fixNegotiationNeeded=function(e){m.wrapPeerConnectionEvent(e,"negotiationneeded",function(t){var e=t.target;if("stable"!==e.signalingState){return}return t})};var l=e("../utils.js"),m=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(l);function a(e,t,r){if(t in e){Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0})}else{e[t]=r}return e}function n(t){if("object"===("undefined"==typeof t?"undefined":d(t))&&t.RTCPeerConnection&&!("ontrack"in t.RTCPeerConnection.prototype)){Object.defineProperty(t.RTCPeerConnection.prototype,"ontrack",{get:function(){return this._ontrack},set:function(e){if(this._ontrack){this.removeEventListener("track",this._ontrack)}this.addEventListener("track",this._ontrack=e)},enumerable:!0,configurable:!0});var r=t.RTCPeerConnection.prototype.setRemoteDescription;t.RTCPeerConnection.prototype.setRemoteDescription=function(){var a=this;if(!this._ontrackpoly){this._ontrackpoly=function(r){r.stream.addEventListener("addtrack",function(e){var n;if(t.RTCPeerConnection.prototype.getReceivers){n=a.getReceivers().find(function(t){return t.track&&t.track.id===e.track.id})}else{n={track:e.track}}var i=new Event("track");i.track=e.track;i.receiver=n;i.transceiver={receiver:n};i.streams=[r.stream];a.dispatchEvent(i)});r.stream.getTracks().forEach(function(e){var n;if(t.RTCPeerConnection.prototype.getReceivers){n=a.getReceivers().find(function(t){return t.track&&t.track.id===e.id})}else{n={track:e}}var i=new Event("track");i.track=e;i.receiver=n;i.transceiver={receiver:n};i.streams=[r.stream];a.dispatchEvent(i)})};this.addEventListener("addstream",this._ontrackpoly)}return r.apply(this,arguments)}}else{m.wrapPeerConnectionEvent(t,"track",function(t){if(!t.transceiver){Object.defineProperty(t,"transceiver",{value:{receiver:t.receiver}})}return t})}}function i(e){if("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&!("getSenders"in e.RTCPeerConnection.prototype)&&"createDTMFSender"in e.RTCPeerConnection.prototype){var t=function(e,t){return{track:t,get dtmf(){if(this._dtmf===void 0){if("audio"===t.kind){this._dtmf=e.createDTMFSender(t)}else{this._dtmf=null}}return this._dtmf},_pc:e}};if(!e.RTCPeerConnection.prototype.getSenders){e.RTCPeerConnection.prototype.getSenders=function(){this._senders=this._senders||[];return this._senders.slice()};var r=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e){var a=r.apply(this,arguments);if(!a){a=t(this,e);this._senders.push(a)}return a};var a=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){a.apply(this,arguments);var t=this._senders.indexOf(e);if(-1!==t){this._senders.splice(t,1)}}}var n=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._senders=this._senders||[];n.apply(this,[e]);e.getTracks().forEach(function(e){r._senders.push(t(r,e))})};var i=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._senders=this._senders||[];i.apply(this,[e]);e.getTracks().forEach(function(e){var r=t._senders.find(function(t){return t.track===e});if(r){t._senders.splice(t._senders.indexOf(r),1)}})}}else if("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&"getSenders"in e.RTCPeerConnection.prototype&&"createDTMFSender"in e.RTCPeerConnection.prototype&&e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)){var o=e.RTCPeerConnection.prototype.getSenders;e.RTCPeerConnection.prototype.getSenders=function(){var e=this,t=o.apply(this,[]);t.forEach(function(t){return t._pc=e});return t};Object.defineProperty(e.RTCRtpSender.prototype,"dtmf",{get:function(){if(this._dtmf===void 0){if("audio"===this.track.kind){this._dtmf=this._pc.createDTMFSender(this.track)}else{this._dtmf=null}}return this._dtmf}})}}function o(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&e.RTCRtpSender&&e.RTCRtpReceiver)){return}if(!("getStats"in e.RTCRtpSender.prototype)){var t=e.RTCPeerConnection.prototype.getSenders;if(t){e.RTCPeerConnection.prototype.getSenders=function(){var e=this,r=t.apply(this,[]);r.forEach(function(t){return t._pc=e});return r}}var r=e.RTCPeerConnection.prototype.addTrack;if(r){e.RTCPeerConnection.prototype.addTrack=function(){var e=r.apply(this,arguments);e._pc=this;return e}}e.RTCRtpSender.prototype.getStats=function(){var e=this;return this._pc.getStats().then(function(t){return m.filterStats(t,e.track,!0)})}}if(!("getStats"in e.RTCRtpReceiver.prototype)){var a=e.RTCPeerConnection.prototype.getReceivers;if(a){e.RTCPeerConnection.prototype.getReceivers=function(){var e=this,t=a.apply(this,[]);t.forEach(function(t){return t._pc=e});return t}}m.wrapPeerConnectionEvent(e,"track",function(t){t.receiver._pc=t.srcElement;return t});e.RTCRtpReceiver.prototype.getStats=function(){var e=this;return this._pc.getStats().then(function(t){return m.filterStats(t,e.track,!1)})}}if(!("getStats"in e.RTCRtpSender.prototype&&"getStats"in e.RTCRtpReceiver.prototype)){return}var n=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){if(0r.version;if(d&&("user"===d.exact||"environment"===d.exact||"user"===d.ideal||"environment"===d.ideal)&&!(t.mediaDevices.getSupportedConstraints&&t.mediaDevices.getSupportedConstraints().facingMode&&!c)){delete e.video.facingMode;var p;if("environment"===d.exact||"environment"===d.ideal){p=["back","rear"]}else if("user"===d.exact||"user"===d.ideal){p=["front"]}if(p){return t.mediaDevices.enumerateDevices().then(function(t){t=t.filter(function(e){return"videoinput"===e.kind});var r=t.find(function(e){return p.some(function(t){return e.label.toLowerCase().includes(t)})});if(!r&&t.length&&p.includes("back")){r=t[t.length-1]}if(r){e.video.deviceId=d.exact?{exact:r.deviceId}:{ideal:r.deviceId}}e.video=n(e.video);o("chrome: "+JSON.stringify(e));return i(e)})}}e.video=n(e.video)}o("chrome: "+JSON.stringify(e));return i(e)},d=function(t){if(64<=r.version){return t}return{name:{PermissionDeniedError:"NotAllowedError",PermissionDismissedError:"NotAllowedError",InvalidStateError:"NotAllowedError",DevicesNotFoundError:"NotFoundError",ConstraintNotSatisfiedError:"OverconstrainedError",TrackStartError:"NotReadableError",MediaDeviceFailedDueToShutdown:"NotAllowedError",MediaDeviceKillSwitchOn:"NotAllowedError",TabCaptureError:"AbortError",ScreenCaptureError:"AbortError",DeviceCaptureError:"AbortError"}[t.name]||t.name,message:t.message,constraint:t.constraint||t.constraintName,toString:function(){return this.name+(this.message&&": ")+this.message}}};t.getUserMedia=function(e,r,a){s(e,function(e){t.webkitGetUserMedia(e,r,function(t){if(a){a(d(t))}})})}.bind(t);if(t.mediaDevices.getUserMedia){var p=t.mediaDevices.getUserMedia.bind(t.mediaDevices);t.mediaDevices.getUserMedia=function(e){return s(e,function(e){return p(e).then(function(t){if(e.audio&&!t.getAudioTracks().length||e.video&&!t.getVideoTracks().length){t.getTracks().forEach(function(e){e.stop()});throw new DOMException("","NotFoundError")}return t},function(t){return Promise.reject(d(t))})})}}};var n=e("../utils.js"),i=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(n);var o=i.log},{"../utils.js":15}],6:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});var s="function"==typeof Symbol&&"symbol"===_typeof2(Symbol.iterator)?function(e){return _typeof2(e)}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":_typeof2(e)};r.shimRTCIceCandidate=a;r.shimMaxMessageSize=n;r.shimSendThrowTypeError=i;r.shimConnectionState=o;r.removeAllowExtmapMixed=function(e){if(!e.RTCPeerConnection){return}var t=l.detectBrowser(e);if("chrome"===t.browser&&71<=t.version){return}var r=e.RTCPeerConnection.prototype.setRemoteDescription;e.RTCPeerConnection.prototype.setRemoteDescription=function(e){if(e&&e.sdp&&-1!==e.sdp.indexOf("\na=extmap-allow-mixed")){e.sdp=e.sdp.split("\n").filter(function(e){return"a=extmap-allow-mixed"!==e.trim()}).join("\n")}return r.apply(this,arguments)}};var d=e("sdp"),c=function(e){return e&&e.__esModule?e:{default:e}}(d),p=e("./utils"),l=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(p);function a(t){if(!t.RTCIceCandidate||t.RTCIceCandidate&&"foundation"in t.RTCIceCandidate.prototype){return}var r=t.RTCIceCandidate;t.RTCIceCandidate=function(e){if("object"===("undefined"==typeof e?"undefined":s(e))&&e.candidate&&0===e.candidate.indexOf("a=")){e=JSON.parse(JSON.stringify(e));e.candidate=e.candidate.substr(2)}if(e.candidate&&e.candidate.length){var t=new r(e),a=c.default.parseCandidate(e.candidate),n=Object.assign(t,a);n.toJSON=function(){return{candidate:n.candidate,sdpMid:n.sdpMid,sdpMLineIndex:n.sdpMLineIndex,usernameFragment:n.usernameFragment}};return n}return new r(e)};t.RTCIceCandidate.prototype=r.prototype;l.wrapPeerConnectionEvent(t,"icecandidate",function(r){if(r.candidate){Object.defineProperty(r,"candidate",{value:new t.RTCIceCandidate(r.candidate),writable:"false"})}return r})}function n(e){if(!e.RTCPeerConnection){return}var t=l.detectBrowser(e);if(!("sctp"in e.RTCPeerConnection.prototype)){Object.defineProperty(e.RTCPeerConnection.prototype,"sctp",{get:function(){return"undefined"==typeof this._sctp?null:this._sctp}})}var r=function(e){if(!e||!e.sdp){return!1}var t=c.default.splitSections(e.sdp);t.shift();return t.some(function(e){var t=c.default.parseMLine(e);return t&&"application"===t.kind&&-1!==t.protocol.indexOf("SCTP")})},a=function(e){var t=e.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);if(null===t||2>t.length){return-1}var r=parseInt(t[1],10);return r!==r?-1:r},n=function(e){var r=65536;if("firefox"===t.browser){if(57>t.version){if(-1===e){r=16384}else{r=2147483637}}else if(60>t.version){r=57===t.version?65535:65536}else{r=2147483637}}return r},i=function(e,r){var a=65536;if("firefox"===t.browser&&57===t.version){a=65535}var n=c.default.matchPrefix(e.sdp,"a=max-message-size:");if(0t.sctp.maxMessageSize){throw new TypeError("Message too large (can send a maximum of "+t.sctp.maxMessageSize+" bytes)")}return r.apply(e,arguments)}}var r=e.RTCPeerConnection.prototype.createDataChannel;e.RTCPeerConnection.prototype.createDataChannel=function(){var e=r.apply(this,arguments);t(e,this);return e};l.wrapPeerConnectionEvent(e,"datachannel",function(r){t(r.channel,r.target);return r})}function o(e){if(!e.RTCPeerConnection||"connectionState"in e.RTCPeerConnection.prototype){return}var t=e.RTCPeerConnection.prototype;Object.defineProperty(t,"connectionState",{get:function(){return{completed:"connected",checking:"connecting"}[this.iceConnectionState]||this.iceConnectionState},enumerable:!0,configurable:!0});Object.defineProperty(t,"onconnectionstatechange",{get:function(){return this._onconnectionstatechange||null},set:function(e){if(this._onconnectionstatechange){this.removeEventListener("connectionstatechange",this._onconnectionstatechange);delete this._onconnectionstatechange}if(e){this.addEventListener("connectionstatechange",this._onconnectionstatechange=e)}},enumerable:!0,configurable:!0});["setLocalDescription","setRemoteDescription"].forEach(function(e){var r=t[e];t[e]=function(){if(!this._connectionstatechangepoly){this._connectionstatechangepoly=function(t){var e=t.target;if(e._lastConnectionState!==e.connectionState){e._lastConnectionState=e.connectionState;var r=new Event("connectionstatechange",t);e.dispatchEvent(r)}return t};this.addEventListener("iceconnectionstatechange",this._connectionstatechangepoly)}return r.apply(this,arguments)}})}},{"./utils":15,sdp:17}],7:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.shimGetDisplayMedia=r.shimGetUserMedia=void 0;var i=e("./getusermedia");Object.defineProperty(r,"shimGetUserMedia",{enumerable:!0,get:function(){return i.shimGetUserMedia}});var o=e("./getdisplaymedia");Object.defineProperty(r,"shimGetDisplayMedia",{enumerable:!0,get:function(){return o.shimGetDisplayMedia}});r.shimPeerConnection=a;r.shimReplaceTrack=n;var s=e("../utils"),d=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(s),c=e("./filtericeservers"),p=e("rtcpeerconnection-shim"),l=function(e){return e&&e.__esModule?e:{default:e}}(p);function a(e){var t=d.detectBrowser(e);if(e.RTCIceGatherer){if(!e.RTCIceCandidate){e.RTCIceCandidate=function(e){return e}}if(!e.RTCSessionDescription){e.RTCSessionDescription=function(e){return e}}if(15025>t.version){var r=Object.getOwnPropertyDescriptor(e.MediaStreamTrack.prototype,"enabled");Object.defineProperty(e.MediaStreamTrack.prototype,"enabled",{set:function(e){r.set.call(this,e);var t=new Event("enabled");t.enabled=e;this.dispatchEvent(t)}})}}if(e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)){Object.defineProperty(e.RTCRtpSender.prototype,"dtmf",{get:function(){if(this._dtmf===void 0){if("audio"===this.track.kind){this._dtmf=new e.RTCDtmfSender(this)}else if("video"===this.track.kind){this._dtmf=null}}return this._dtmf}})}if(e.RTCDtmfSender&&!e.RTCDTMFSender){e.RTCDTMFSender=e.RTCDtmfSender}var a=(0,l.default)(e,t.version);e.RTCPeerConnection=function(e){if(e&&e.iceServers){e.iceServers=(0,c.filterIceServers)(e.iceServers,t.version);d.log("ICE servers after filtering:",e.iceServers)}return new a(e)};e.RTCPeerConnection.prototype=a.prototype}function n(e){if(e.RTCRtpSender&&!("replaceTrack"in e.RTCRtpSender.prototype)){e.RTCRtpSender.prototype.replaceTrack=e.RTCRtpSender.prototype.setTrack}}},{"../utils":15,"./filtericeservers":8,"./getdisplaymedia":9,"./getusermedia":10,"rtcpeerconnection-shim":16}],8:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.filterIceServers=function(e){var t=!1;e=JSON.parse(JSON.stringify(e));return e.filter(function(e){if(e&&(e.urls||e.url)){var r=e.urls||e.url;if(e.url&&!e.urls){n.deprecated("RTCIceServer.url","RTCIceServer.urls")}var a="string"==typeof r;if(a){r=[r]}r=r.filter(function(e){if(0===e.indexOf("stun:")){return!1}var r=e.startsWith("turn")&&!e.startsWith("turn:[")&&e.includes("transport=udp");if(r&&!t){t=!0;return!0}return r&&!t});delete e.url;e.urls=a?r[0]:r;return!!r.length}})};var a=e("../utils"),n=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(a)},{"../utils":15}],9:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.shimGetDisplayMedia=a;function a(e){if(!("getDisplayMedia"in e.navigator)){return}if(!e.navigator.mediaDevices){return}if(e.navigator.mediaDevices&&"getDisplayMedia"in e.navigator.mediaDevices){return}e.navigator.mediaDevices.getDisplayMedia=e.navigator.getDisplayMedia.bind(e.navigator)}},{}],10:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.shimGetUserMedia=function(e){var t=e&&e.navigator,r=function(t){return{name:{PermissionDeniedError:"NotAllowedError"}[t.name]||t.name,message:t.message,constraint:t.constraint,toString:function(){return this.name}}},a=t.mediaDevices.getUserMedia.bind(t.mediaDevices);t.mediaDevices.getUserMedia=function(e){return a(e).catch(function(t){return Promise.reject(r(t))})}}},{}],11:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.shimGetDisplayMedia=r.shimGetUserMedia=void 0;var d="function"==typeof Symbol&&"symbol"===_typeof2(Symbol.iterator)?function(e){return _typeof2(e)}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":_typeof2(e)},c=e("./getusermedia");Object.defineProperty(r,"shimGetUserMedia",{enumerable:!0,get:function(){return c.shimGetUserMedia}});var p=e("./getdisplaymedia");Object.defineProperty(r,"shimGetDisplayMedia",{enumerable:!0,get:function(){return p.shimGetDisplayMedia}});r.shimOnTrack=n;r.shimPeerConnection=function(e){var t=m.detectBrowser(e);if("object"!==("undefined"==typeof e?"undefined":d(e))||!(e.RTCPeerConnection||e.mozRTCPeerConnection)){return}if(!e.RTCPeerConnection&&e.mozRTCPeerConnection){e.RTCPeerConnection=e.mozRTCPeerConnection}if(53>t.version){["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],n=a({},t,function(){arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]);return r.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=n[t]})}if(68>t.version){var r=e.RTCPeerConnection.prototype.addIceCandidate;e.RTCPeerConnection.prototype.addIceCandidate=function(){if(!arguments[0]){if(arguments[1]){arguments[1].apply(null)}return Promise.resolve()}if(arguments[0]&&""===arguments[0].candidate){return Promise.resolve()}return r.apply(this,arguments)}}var n={inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"},i=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){var e=Array.prototype.slice.call(arguments),r=e[0],a=e[1],o=e[2];return i.apply(this,[r||null]).then(function(r){if(53>t.version&&!a){try{r.forEach(function(e){e.type=n[e.type]||e.type})}catch(t){if("TypeError"!==t.name){throw t}r.forEach(function(e,t){r.set(t,Object.assign({},e,{type:n[e.type]||e.type}))})}}return r}).then(a,o)}};r.shimSenderGetStats=i;r.shimReceiverGetStats=o;r.shimRemoveStream=s;r.shimRTCDataChannel=function(e){if(e.DataChannel&&!e.RTCDataChannel){e.RTCDataChannel=e.DataChannel}};r.shimAddTransceiver=function(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection)){return}var t=e.RTCPeerConnection.prototype.addTransceiver;if(t){e.RTCPeerConnection.prototype.addTransceiver=function(){this.setParametersPromises=[];var e=arguments[1],r=e&&"sendEncodings"in e;if(r){e.sendEncodings.forEach(function(e){if("rid"in e){if(!/^[a-z0-9]{0,16}$/i.test(e.rid)){throw new TypeError("Invalid RID value provided.")}}if("scaleResolutionDownBy"in e){if(!(1<=parseFloat(e.scaleResolutionDownBy))){throw new RangeError("scale_resolution_down_by must be >= 1.0")}}if("maxFramerate"in e){if(!(0<=parseFloat(e.maxFramerate))){throw new RangeError("max_framerate must be >= 0.0")}}})}var a=t.apply(this,arguments);if(r){var n=a.sender,i=n.getParameters();if(!("encodings"in i)){i.encodings=e.sendEncodings;this.setParametersPromises.push(n.setParameters(i).catch(function(){}))}}return a}}};r.shimCreateOffer=function(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection)){return}var t=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(){var e=this,r=arguments;if(this.setParametersPromises&&this.setParametersPromises.length){return Promise.all(this.setParametersPromises).then(function(){return t.apply(e,r)}).finally(function(){e.setParametersPromises=[]})}return t.apply(this,arguments)}};r.shimCreateAnswer=function(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection)){return}var t=e.RTCPeerConnection.prototype.createAnswer;e.RTCPeerConnection.prototype.createAnswer=function(){var e=this,r=arguments;if(this.setParametersPromises&&this.setParametersPromises.length){return Promise.all(this.setParametersPromises).then(function(){return t.apply(e,r)}).finally(function(){e.setParametersPromises=[]})}return t.apply(this,arguments)}};var l=e("../utils"),m=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(l);function a(e,t,r){if(t in e){Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0})}else{e[t]=r}return e}function n(e){if("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)){Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})}}function i(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&e.RTCRtpSender)){return}if(e.RTCRtpSender&&"getStats"in e.RTCRtpSender.prototype){return}var t=e.RTCPeerConnection.prototype.getSenders;if(t){e.RTCPeerConnection.prototype.getSenders=function(){var e=this,r=t.apply(this,[]);r.forEach(function(t){return t._pc=e});return r}}var r=e.RTCPeerConnection.prototype.addTrack;if(r){e.RTCPeerConnection.prototype.addTrack=function(){var e=r.apply(this,arguments);e._pc=this;return e}}e.RTCRtpSender.prototype.getStats=function(){return this.track?this._pc.getStats(this.track):Promise.resolve(new Map)}}function o(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&e.RTCRtpSender)){return}if(e.RTCRtpSender&&"getStats"in e.RTCRtpReceiver.prototype){return}var t=e.RTCPeerConnection.prototype.getReceivers;if(t){e.RTCPeerConnection.prototype.getReceivers=function(){var e=this,r=t.apply(this,[]);r.forEach(function(t){return t._pc=e});return r}}m.wrapPeerConnectionEvent(e,"track",function(t){t.receiver._pc=t.srcElement;return t});e.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track)}}function s(e){if(!e.RTCPeerConnection||"removeStream"in e.RTCPeerConnection.prototype){return}e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;m.deprecated("removeStream","removeTrack");this.getSenders().forEach(function(r){if(r.track&&e.getTracks().includes(r.track)){t.removeTrack(r)}})}}},{"../utils":15,"./getdisplaymedia":12,"./getusermedia":13}],12:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.shimGetDisplayMedia=a;function a(e,t){if(e.navigator.mediaDevices&&"getDisplayMedia"in e.navigator.mediaDevices){return}if(!e.navigator.mediaDevices){return}e.navigator.mediaDevices.getDisplayMedia=function(r){if(!(r&&r.video)){var a=new DOMException("getDisplayMedia without video constraints is undefined");a.name="NotFoundError";a.code=8;return Promise.reject(a)}if(!0===r.video){r.video={mediaSource:t}}else{r.video.mediaSource=t}return e.navigator.mediaDevices.getUserMedia(r)}}},{}],13:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});var n="function"==typeof Symbol&&"symbol"===_typeof2(Symbol.iterator)?function(e){return _typeof2(e)}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":_typeof2(e)};r.shimGetUserMedia=a;var i=e("../utils"),o=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(i);function a(e){var t=o.detectBrowser(e),r=e&&e.navigator,a=e&&e.MediaStreamTrack;r.getUserMedia=function(e,t,a){o.deprecated("navigator.getUserMedia","navigator.mediaDevices.getUserMedia");r.mediaDevices.getUserMedia(e).then(t,a)};if(!(55=r&&parseInt(a[r],10)}function i(){if("object"===("undefined"==typeof window?"undefined":l(window))){if(m){return}if("undefined"!=typeof console&&"function"==typeof console.log){console.log.apply(console,arguments)}}}function o(e,t){if(!f){return}console.warn(e+" is deprecated, please use "+t+" instead.")}function s(e){var t=e.navigator,r={browser:null,version:null};if("undefined"==typeof e||!e.navigator){r.browser="Not a browser.";return r}if(t.mozGetUserMedia){r.browser="firefox";r.version=n(t.userAgent,/Firefox\/(\d+)\./,1)}else if(t.webkitGetUserMedia||!1===e.isSecureContext&&e.webkitRTCPeerConnection&&!e.RTCIceGatherer){r.browser="chrome";r.version=n(t.userAgent,/Chrom(e|ium)\/(\d+)\./,2)}else if(t.mediaDevices&&t.userAgent.match(/Edge\/(\d+).(\d+)$/)){r.browser="edge";r.version=n(t.userAgent,/Edge\/(\d+).(\d+)$/,2)}else if(e.RTCPeerConnection&&t.userAgent.match(/AppleWebKit\/(\d+)\./)){r.browser="safari";r.version=n(t.userAgent,/AppleWebKit\/(\d+)\./,1);r.supportsUnifiedPlan=e.RTCRtpTransceiver&&"currentDirection"in e.RTCRtpTransceiver.prototype}else{r.browser="Not a supported browser.";return r}return r}function d(e){return"[object Object]"===Object.prototype.toString.call(e)}function c(e){if(!d(e)){return e}return Object.keys(e).reduce(function(t,r){var n=d(e[r]),i=n?c(e[r]):e[r],o=n&&!Object.keys(i).length;if(i===void 0||o){return t}return Object.assign(t,a({},r,i))},{})}function p(e,t,r){if(!t||r.has(t.id)){return}r.set(t.id,t);Object.keys(t).forEach(function(a){if(a.endsWith("Id")){p(e,e.get(t[a]),r)}else if(a.endsWith("Ids")){t[a].forEach(function(t){p(e,e.get(t),r)})}})}},{}],16:[function(e,t){'use strict';var c=e("sdp");function r(e){return{inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[e.type]||e.type}function a(e,t,r,a,n){var i=c.writeRtpDescription(e.kind,t);i+=c.writeIceParameters(e.iceGatherer.getLocalParameters());i+=c.writeDtlsParameters(e.dtlsTransport.getLocalParameters(),"offer"===r?"actpass":n||"active");i+="a=mid:"+e.mid+"\r\n";if(e.rtpSender&&e.rtpReceiver){i+="a=sendrecv\r\n"}else if(e.rtpSender){i+="a=sendonly\r\n"}else if(e.rtpReceiver){i+="a=recvonly\r\n"}else{i+="a=inactive\r\n"}if(e.rtpSender){var o=e.rtpSender._initialTrackId||e.rtpSender.track.id;e.rtpSender._initialTrackId=o;var s="msid:"+(a?a.id:"-")+" "+o+"\r\n";i+="a="+s;i+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" "+s;if(e.sendEncodingParameters[0].rtx){i+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" "+s;i+="a=ssrc-group:FID "+e.sendEncodingParameters[0].ssrc+" "+e.sendEncodingParameters[0].rtx.ssrc+"\r\n"}}i+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" cname:"+c.localCName+"\r\n";if(e.rtpSender&&e.sendEncodingParameters[0].rtx){i+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" cname:"+c.localCName+"\r\n"}return i}function n(e,t){var r=!1;e=JSON.parse(JSON.stringify(e));return e.filter(function(e){if(e&&(e.urls||e.url)){var a=e.urls||e.url;if(e.url&&!e.urls){console.warn("RTCIceServer.url is deprecated! Use urls instead.")}var n="string"==typeof a;if(n){a=[a]}a=a.filter(function(e){var a=0===e.indexOf("turn:")&&-1!==e.indexOf("transport=udp")&&-1===e.indexOf("turn:[")&&!r;if(a){r=!0;return!0}return 0===e.indexOf("stun:")&&14393<=t&&-1===e.indexOf("?transport=udp")});delete e.url;e.urls=n?a[0]:a;return!!a.length}})}function i(e,t){var r={codecs:[],headerExtensions:[],fecMechanisms:[]},a=function(e,t){e=parseInt(e,10);for(var r=0;rt){e.recvEncodingParameters.forEach(function(e){delete e.rtx})}if(e.recvEncodingParameters.length){n.encodings=e.recvEncodingParameters}else{n.encodings=[{}]}n.rtcp={compound:e.rtcpParameters.compound};if(e.rtcpParameters.cname){n.rtcp.cname=e.rtcpParameters.cname}if(e.sendEncodingParameters.length){n.rtcp.ssrc=e.sendEncodingParameters[0].ssrc}e.rtpReceiver.receive(n)}};f.prototype.setLocalDescription=function(e){var t=this;if(-1===["offer","answer"].indexOf(e.type)){return Promise.reject(d("TypeError","Unsupported type \""+e.type+"\""))}if(!o("setLocalDescription",e.type,t.signalingState)||t._isClosed){return Promise.reject(d("InvalidStateError","Can not set local "+e.type+" in state "+t.signalingState))}var r,a;if("offer"===e.type){r=c.splitSections(e.sdp);a=r.shift();r.forEach(function(e,r){var a=c.parseRtpParameters(e);t.transceivers[r].localCapabilities=a});t.transceivers.forEach(function(e,r){t._gather(e.mid,r)})}else if("answer"===e.type){r=c.splitSections(t._remoteDescription.sdp);a=r.shift();var n=0t){D.codecs=D.codecs.filter(function(e){return"rtx"!==e.name})}x=P.sendEncodingParameters||[{ssrc:1001*(2*d+2)}];var U=!1;if("sendrecv"===T||"sendonly"===T){U=!P.rtpReceiver;b=P.rtpReceiver||new e.RTCRtpReceiver(P.dtlsTransport,h);if(U){var F;I=b.track;if(S&&"-"===S.stream){}else if(S){if(!n[S.stream]){n[S.stream]=new e.MediaStream;Object.defineProperty(n[S.stream],"id",{get:function get(){return S.stream}})}Object.defineProperty(I,"id",{get:function get(){return S.track}});F=n[S.stream]}else{if(!n.default){n.default=new e.MediaStream}F=n.default}if(F){p(I,F);P.associatedRemoteMediaStreams.push(F)}f.push([I,b,F])}}else if(P.rtpReceiver&&P.rtpReceiver.track){P.associatedRemoteMediaStreams.forEach(function(e){var t=e.getTracks().find(function(e){return e.id===P.rtpReceiver.track.id});if(t){l(t,e)}});P.associatedRemoteMediaStreams=[]}P.localCapabilities=D;P.remoteCapabilities=w;P.rtpReceiver=b;P.rtcpParameters=j;P.sendEncodingParameters=x;P.recvEncodingParameters=M;a._transceive(a.transceivers[d],!1,U)}else if("answer"===r.type&&!v){P=a.transceivers[d];_=P.iceGatherer;k=P.iceTransport;E=P.dtlsTransport;b=P.rtpReceiver;x=P.sendEncodingParameters;D=P.localCapabilities;a.transceivers[d].recvEncodingParameters=M;a.transceivers[d].remoteCapabilities=w;a.transceivers[d].rtcpParameters=j;if(O.length&&"new"===k.state){if((y||A)&&(!u||0===d)){k.setRemoteCandidates(O)}else{O.forEach(function(e){s(P.iceTransport,e)})}}if(!u||0===d){if("new"===k.state){k.start(_,L,"controlling")}if("new"===E.state){E.start(G)}}var N=i(P.localCapabilities,P.remoteCapabilities),z=N.codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length;if(!z&&P.sendEncodingParameters[0].rtx){delete P.sendEncodingParameters[0].rtx}a._transceive(P,"sendrecv"===T||"recvonly"===T,"sendrecv"===T||"sendonly"===T);if(b&&("sendrecv"===T||"sendonly"===T)){I=b.track;if(S){if(!n[S.stream]){n[S.stream]=new e.MediaStream}p(I,n[S.stream]);f.push([I,b,n[S.stream]])}else{if(!n.default){n.default=new e.MediaStream}p(I,n.default);f.push([I,b,n.default])}}else{delete P.rtpReceiver}}});if(a._dtlsRole===void 0){a._dtlsRole="offer"===r.type?"active":"passive"}a._remoteDescription={type:r.type,sdp:r.sdp};if("offer"===r.type){a._updateSignalingState("have-remote-offer")}else{a._updateSignalingState("stable")}Object.keys(n).forEach(function(t){var r=n[t];if(r.getTracks().length){if(-1===a.remoteStreams.indexOf(r)){a.remoteStreams.push(r);var i=new Event("addstream");i.stream=r;e.setTimeout(function(){a._dispatchEvent("addstream",i)})}f.forEach(function(e){var t=e[0],n=e[1];if(r.id!==e[2].id){return}m(a,t,n,[r])})}});f.forEach(function(e){if(e[2]){return}m(a,e[0],e[1],[])});e.setTimeout(function(){if(!(a&&a.transceivers)){return}a.transceivers.forEach(function(e){if(e.iceTransport&&"new"===e.iceTransport.state&&0n){e.wantReceive=!1}}else if("video"===e.kind){i--;if(0>i){e.wantReceive=!1}}});while(0t){d.codecs=d.codecs.filter(function(e){return"rtx"!==e.name})}d.codecs.forEach(function(e){if("H264"===e.name&&e.parameters["level-asymmetry-allowed"]===void 0){e.parameters["level-asymmetry-allowed"]="1"}if(a.remoteCapabilities&&a.remoteCapabilities.codecs){a.remoteCapabilities.codecs.forEach(function(t){if(e.name.toLowerCase()===t.name.toLowerCase()&&e.clockRate===t.clockRate){e.preferredPayloadType=t.payloadType}})}});d.headerExtensions.forEach(function(e){var t=a.remoteCapabilities&&a.remoteCapabilities.headerExtensions||[];t.forEach(function(t){if(e.uri===t.uri){e.id=t.id}})});var p=a.sendEncodingParameters||[{ssrc:1001*(2*n+1)}];if(i){if(15019<=t&&"video"===o&&!p[0].rtx){p[0].rtx={ssrc:p[0].ssrc+1}}}if(a.wantReceive){a.rtpReceiver=new e.RTCRtpReceiver(a.dtlsTransport,o)}a.localCapabilities=d;a.sendEncodingParameters=p});if("max-compat"!==r._config.bundlePolicy){s+="a=group:BUNDLE "+r.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"}s+="a=ice-options:trickle\r\n";r.transceivers.forEach(function(e,t){s+=a(e,e.localCapabilities,"offer",e.stream,r._dtlsRole);s+="a=rtcp-rsize\r\n";if(e.iceGatherer&&"new"!==r.iceGatheringState&&(0===t||!r.usingBundle)){e.iceGatherer.getLocalCandidates().forEach(function(e){e.component=1;s+="a="+c.writeCandidate(e)+"\r\n"});if("completed"===e.iceGatherer.state){s+="a=end-of-candidates\r\n"}}});var p=new e.RTCSessionDescription({type:"offer",sdp:s});return Promise.resolve(p)};f.prototype.createAnswer=function(){var r=this;if(r._isClosed){return Promise.reject(d("InvalidStateError","Can not call createAnswer after close"))}if(!("have-remote-offer"===r.signalingState||"have-local-pranswer"===r.signalingState)){return Promise.reject(d("InvalidStateError","Can not call createAnswer in signalingState "+r.signalingState))}var n=c.writeSessionBoilerplate(r._sdpSessionId,r._sdpSessionVersion++);if(r.usingBundle){n+="a=group:BUNDLE "+r.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"}n+="a=ice-options:trickle\r\n";var o=c.getMediaSections(r._remoteDescription.sdp).length;r.transceivers.forEach(function(e,s){if(s+1>o){return}if(e.rejected){if("application"===e.kind){if("DTLS/SCTP"===e.protocol){n+="m=application 0 DTLS/SCTP 5000\r\n"}else{n+="m=application 0 "+e.protocol+" webrtc-datachannel\r\n"}}else if("audio"===e.kind){n+="m=audio 0 UDP/TLS/RTP/SAVPF 0\r\na=rtpmap:0 PCMU/8000\r\n"}else if("video"===e.kind){n+="m=video 0 UDP/TLS/RTP/SAVPF 120\r\na=rtpmap:120 VP8/90000\r\n"}n+="c=IN IP4 0.0.0.0\r\na=inactive\r\na=mid:"+e.mid+"\r\n";return}if(e.stream){var d;if("audio"===e.kind){d=e.stream.getAudioTracks()[0]}else if("video"===e.kind){d=e.stream.getVideoTracks()[0]}if(d){if(15019<=t&&"video"===e.kind&&!e.sendEncodingParameters[0].rtx){e.sendEncodingParameters[0].rtx={ssrc:e.sendEncodingParameters[0].ssrc+1}}}}var c=i(e.localCapabilities,e.remoteCapabilities),p=c.codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length;if(!p&&e.sendEncodingParameters[0].rtx){delete e.sendEncodingParameters[0].rtx}n+=a(e,c,"answer",e.stream,r._dtlsRole);if(e.rtcpParameters&&e.rtcpParameters.reducedSize){n+="a=rtcp-rsize\r\n"}});var s=new e.RTCSessionDescription({type:"answer",sdp:n});return Promise.resolve(s)};f.prototype.addIceCandidate=function(e){var t=this,r;if(e&&!(e.sdpMLineIndex!==void 0||e.sdpMid)){return Promise.reject(new TypeError("sdpMLineIndex or sdpMid required"))}return new Promise(function(a,n){if(!t._remoteDescription){return n(d("InvalidStateError","Can not add ICE candidate without a remote description"))}else if(!e||""===e.candidate){for(var o=0;on){n=e.maxptime}});if(0t[a].length||"="!==t[a].charAt(1)){return!1}}return!0};if("object"===_typeof2(t)){t.exports=r}},{}]},{},[1])(1)}); +function _typeof2(e){"@babel/helpers - typeof";if("function"==typeof Symbol&&"symbol"==typeof Symbol.iterator){_typeof2=function(e){return typeof e}}else{_typeof2=function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e}}return _typeof2(e)}define ("core/adapter",[],function(){return function d(c,e,t){function r(i,o){if(!e[i]){if(!c[i]){var s="function"==typeof require&&require;if(!o&&s)return s(i,!0);if(n)return n(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=e[i]={exports:{}};c[i][0].call(p.exports,function(t){var e=c[i][1][t];return r(e?e:t)},p,p.exports,d,c,e,t)}return e[i].exports}for(var n="function"==typeof require&&require,a=0;at.version){["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],o=n({},t,function(){arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]);return r.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=o[t]})}};r.fixNegotiationNeeded=function(e,t){l.wrapPeerConnectionEvent(e,"negotiationneeded",function(r){var e=r.target;if(72>t.version||e.getConfiguration&&"plan-b"===e.getConfiguration().sdpSemantics){if("stable"!==e.signalingState){return}}return r})};var m=e("../utils.js"),l=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(m);function n(e,t,r){if(t in e){Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0})}else{e[t]=r}return e}function o(t){if("object"===("undefined"==typeof t?"undefined":d(t))&&t.RTCPeerConnection&&!("ontrack"in t.RTCPeerConnection.prototype)){Object.defineProperty(t.RTCPeerConnection.prototype,"ontrack",{get:function(){return this._ontrack},set:function(e){if(this._ontrack){this.removeEventListener("track",this._ontrack)}this.addEventListener("track",this._ontrack=e)},enumerable:!0,configurable:!0});var r=t.RTCPeerConnection.prototype.setRemoteDescription;t.RTCPeerConnection.prototype.setRemoteDescription=function(){var n=this;if(!this._ontrackpoly){this._ontrackpoly=function(r){r.stream.addEventListener("addtrack",function(e){var o;if(t.RTCPeerConnection.prototype.getReceivers){o=n.getReceivers().find(function(t){return t.track&&t.track.id===e.track.id})}else{o={track:e.track}}var a=new Event("track");a.track=e.track;a.receiver=o;a.transceiver={receiver:o};a.streams=[r.stream];n.dispatchEvent(a)});r.stream.getTracks().forEach(function(e){var o;if(t.RTCPeerConnection.prototype.getReceivers){o=n.getReceivers().find(function(t){return t.track&&t.track.id===e.id})}else{o={track:e}}var a=new Event("track");a.track=e;a.receiver=o;a.transceiver={receiver:o};a.streams=[r.stream];n.dispatchEvent(a)})};this.addEventListener("addstream",this._ontrackpoly)}return r.apply(this,arguments)}}else{l.wrapPeerConnectionEvent(t,"track",function(t){if(!t.transceiver){Object.defineProperty(t,"transceiver",{value:{receiver:t.receiver}})}return t})}}function a(e){if("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&!("getSenders"in e.RTCPeerConnection.prototype)&&"createDTMFSender"in e.RTCPeerConnection.prototype){var t=function(e,t){return{track:t,get dtmf(){if(this._dtmf===void 0){if("audio"===t.kind){this._dtmf=e.createDTMFSender(t)}else{this._dtmf=null}}return this._dtmf},_pc:e}};if(!e.RTCPeerConnection.prototype.getSenders){e.RTCPeerConnection.prototype.getSenders=function(){this._senders=this._senders||[];return this._senders.slice()};var r=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e){var n=r.apply(this,arguments);if(!n){n=t(this,e);this._senders.push(n)}return n};var n=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){n.apply(this,arguments);var t=this._senders.indexOf(e);if(-1!==t){this._senders.splice(t,1)}}}var o=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._senders=this._senders||[];o.apply(this,[e]);e.getTracks().forEach(function(e){r._senders.push(t(r,e))})};var a=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._senders=this._senders||[];a.apply(this,[e]);e.getTracks().forEach(function(e){var r=t._senders.find(function(t){return t.track===e});if(r){t._senders.splice(t._senders.indexOf(r),1)}})}}else if("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&"getSenders"in e.RTCPeerConnection.prototype&&"createDTMFSender"in 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t&&"application"===t.kind&&-1!==t.protocol.indexOf("SCTP")})},n=function(e){var t=e.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);if(null===t||2>t.length){return-1}var r=parseInt(t[1],10);return r!==r?-1:r},o=function(e){var r=65536;if("firefox"===t.browser){if(57>t.version){if(-1===e){r=16384}else{r=2147483637}}else if(60>t.version){r=57===t.version?65535:65536}else{r=2147483637}}return r},a=function(e,r){var n=65536;if("firefox"===t.browser&&57===t.version){n=65535}var o=c.default.matchPrefix(e.sdp,"a=max-message-size:");if(0t.sctp.maxMessageSize){throw new TypeError("Message too large (can send a maximum of "+t.sctp.maxMessageSize+" bytes)")}return r.apply(e,arguments)}}var r=e.RTCPeerConnection.prototype.createDataChannel;e.RTCPeerConnection.prototype.createDataChannel=function(){var e=r.apply(this,arguments);t(e,this);return e};m.wrapPeerConnectionEvent(e,"datachannel",function(r){t(r.channel,r.target);return r})}function i(e){if(!e.RTCPeerConnection||"connectionState"in e.RTCPeerConnection.prototype){return}var t=e.RTCPeerConnection.prototype;Object.defineProperty(t,"connectionState",{get:function(){return{completed:"connected",checking:"connecting"}[this.iceConnectionState]||this.iceConnectionState},enumerable:!0,configurable:!0});Object.defineProperty(t,"onconnectionstatechange",{get:function(){return this._onconnectionstatechange||null},set:function(e){if(this._onconnectionstatechange){this.removeEventListener("connectionstatechange",this._onconnectionstatechange);delete this._onconnectionstatechange}if(e){this.addEventListener("connectionstatechange",this._onconnectionstatechange=e)}},enumerable:!0,configurable:!0});["setLocalDescription","setRemoteDescription"].forEach(function(e){var r=t[e];t[e]=function(){if(!this._connectionstatechangepoly){this._connectionstatechangepoly=function(t){var e=t.target;if(e._lastConnectionState!==e.connectionState){e._lastConnectionState=e.connectionState;var r=new Event("connectionstatechange",t);e.dispatchEvent(r)}return t};this.addEventListener("iceconnectionstatechange",this._connectionstatechangepoly)}return r.apply(this,arguments)}})}},{"./utils":11,sdp:12}],7:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.shimGetDisplayMedia=r.shimGetUserMedia=void 0;var d="function"==typeof Symbol&&"symbol"===_typeof2(Symbol.iterator)?function(e){return _typeof2(e)}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":_typeof2(e)},c=e("./getusermedia");Object.defineProperty(r,"shimGetUserMedia",{enumerable:!0,get:function(){return c.shimGetUserMedia}});var p=e("./getdisplaymedia");Object.defineProperty(r,"shimGetDisplayMedia",{enumerable:!0,get:function(){return p.shimGetDisplayMedia}});r.shimOnTrack=o;r.shimPeerConnection=function(e,t){if("object"!==("undefined"==typeof e?"undefined":d(e))||!(e.RTCPeerConnection||e.mozRTCPeerConnection)){return}if(!e.RTCPeerConnection&&e.mozRTCPeerConnection){e.RTCPeerConnection=e.mozRTCPeerConnection}if(53>t.version){["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],o=n({},t,function(){arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]);return r.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=o[t]})}var r={inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"},o=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){var e=Array.prototype.slice.call(arguments),n=e[0],a=e[1],i=e[2];return o.apply(this,[n||null]).then(function(n){if(53>t.version&&!a){try{n.forEach(function(e){e.type=r[e.type]||e.type})}catch(t){if("TypeError"!==t.name){throw 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n=t.apply(this,arguments);if(r){var o=n.sender,a=o.getParameters();if(!("encodings"in a)||1===a.encodings.length&&0===Object.keys(a.encodings[0]).length){a.encodings=e.sendEncodings;o.sendEncodings=e.sendEncodings;this.setParametersPromises.push(o.setParameters(a).then(function(){delete o.sendEncodings}).catch(function(){delete o.sendEncodings}))}}return n}}};r.shimGetParameters=function(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCRtpSender)){return}var t=e.RTCRtpSender.prototype.getParameters;if(t){e.RTCRtpSender.prototype.getParameters=function(){var e=t.apply(this,arguments);if(!("encodings"in e)){e.encodings=[].concat(this.sendEncodings||[{}])}return e}}};r.shimCreateOffer=function(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection)){return}var t=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(){var e=this,r=arguments;if(this.setParametersPromises&&this.setParametersPromises.length){return Promise.all(this.setParametersPromises).then(function(){return t.apply(e,r)}).finally(function(){e.setParametersPromises=[]})}return t.apply(this,arguments)}};r.shimCreateAnswer=function(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection)){return}var t=e.RTCPeerConnection.prototype.createAnswer;e.RTCPeerConnection.prototype.createAnswer=function(){var e=this,r=arguments;if(this.setParametersPromises&&this.setParametersPromises.length){return Promise.all(this.setParametersPromises).then(function(){return t.apply(e,r)}).finally(function(){e.setParametersPromises=[]})}return t.apply(this,arguments)}};var m=e("../utils"),l=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(m);function n(e,t,r){if(t in e){Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0})}else{e[t]=r}return e}function o(e){if("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)){Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})}}function a(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&e.RTCRtpSender)){return}if(e.RTCRtpSender&&"getStats"in e.RTCRtpSender.prototype){return}var t=e.RTCPeerConnection.prototype.getSenders;if(t){e.RTCPeerConnection.prototype.getSenders=function(){var e=this,r=t.apply(this,[]);r.forEach(function(t){return t._pc=e});return r}}var r=e.RTCPeerConnection.prototype.addTrack;if(r){e.RTCPeerConnection.prototype.addTrack=function(){var e=r.apply(this,arguments);e._pc=this;return e}}e.RTCRtpSender.prototype.getStats=function(){return this.track?this._pc.getStats(this.track):Promise.resolve(new Map)}}function i(e){if(!("object"===("undefined"==typeof e?"undefined":d(e))&&e.RTCPeerConnection&&e.RTCRtpSender)){return}if(e.RTCRtpSender&&"getStats"in e.RTCRtpReceiver.prototype){return}var t=e.RTCPeerConnection.prototype.getReceivers;if(t){e.RTCPeerConnection.prototype.getReceivers=function(){var e=this,r=t.apply(this,[]);r.forEach(function(t){return t._pc=e});return r}}l.wrapPeerConnectionEvent(e,"track",function(t){t.receiver._pc=t.srcElement;return t});e.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track)}}function s(e){if(!e.RTCPeerConnection||"removeStream"in e.RTCPeerConnection.prototype){return}e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;l.deprecated("removeStream","removeTrack");this.getSenders().forEach(function(r){if(r.track&&e.getTracks().includes(r.track)){t.removeTrack(r)}})}}},{"../utils":11,"./getdisplaymedia":8,"./getusermedia":9}],8:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});r.shimGetDisplayMedia=n;function n(e,t){if(e.navigator.mediaDevices&&"getDisplayMedia"in e.navigator.mediaDevices){return}if(!e.navigator.mediaDevices){return}e.navigator.mediaDevices.getDisplayMedia=function(r){if(!(r&&r.video)){var n=new DOMException("getDisplayMedia without video constraints is undefined");n.name="NotFoundError";n.code=8;return Promise.reject(n)}if(!0===r.video){r.video={mediaSource:t}}else{r.video.mediaSource=t}return e.navigator.mediaDevices.getUserMedia(r)}}},{}],9:[function(e,t,r){'use strict';Object.defineProperty(r,"__esModule",{value:!0});var o="function"==typeof Symbol&&"symbol"===_typeof2(Symbol.iterator)?function(e){return _typeof2(e)}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":_typeof2(e)};r.shimGetUserMedia=n;var a=e("../utils"),i=function(e){if(e&&e.__esModule){return e}else{var t={};if(null!=e){for(var r in e){if(Object.prototype.hasOwnProperty.call(e,r))t[r]=e[r]}}t.default=e;return t}}(a);function n(e,t){var r=e&&e.navigator,n=e&&e.MediaStreamTrack;r.getUserMedia=function(e,t,n){i.deprecated("navigator.getUserMedia","navigator.mediaDevices.getUserMedia");r.mediaDevices.getUserMedia(e).then(t,n)};if(!(55=r&&parseInt(n[r],10)}function a(){if("object"===("undefined"==typeof window?"undefined":m(window))){if(l){return}if("undefined"!=typeof console&&"function"==typeof console.log){console.log.apply(console,arguments)}}}function i(e,t){if(!y){return}console.warn(e+" is deprecated, please use "+t+" instead.")}function s(e){var t={browser:null,version:null};if("undefined"==typeof e||!e.navigator){t.browser="Not a browser.";return t}var r=e.navigator;if(r.mozGetUserMedia){t.browser="firefox";t.version=o(r.userAgent,/Firefox\/(\d+)\./,1)}else if(r.webkitGetUserMedia||!1===e.isSecureContext&&e.webkitRTCPeerConnection&&!e.RTCIceGatherer){t.browser="chrome";t.version=o(r.userAgent,/Chrom(e|ium)\/(\d+)\./,2)}else if(e.RTCPeerConnection&&r.userAgent.match(/AppleWebKit\/(\d+)\./)){t.browser="safari";t.version=o(r.userAgent,/AppleWebKit\/(\d+)\./,1);t.supportsUnifiedPlan=e.RTCRtpTransceiver&&"currentDirection"in e.RTCRtpTransceiver.prototype}else{t.browser="Not a supported browser.";return t}return t}function d(e){return"[object Object]"===Object.prototype.toString.call(e)}function c(e){if(!d(e)){return e}return Object.keys(e).reduce(function(t,r){var o=d(e[r]),a=o?c(e[r]):e[r],i=o&&!Object.keys(a).length;if(a===void 0||i){return t}return Object.assign(t,n({},r,a))},{})}function p(e,t,r){if(!t||r.has(t.id)){return}r.set(t.id,t);Object.keys(t).forEach(function(n){if(n.endsWith("Id")){p(e,e.get(t[n]),r)}else 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* Description of import/upgrade into Moodle:\n *\n * 1. Visit https://github.com/webrtc/adapter/releases.\n * 2. Check if the version has been updated from what is listed in lib/thirdpartylibs.xml in the Moodle wwwroot.\n * 3. If it has -\n * 1. Download the source code.\n * 2. Copy the content of the file release/adapter.js from the archive (ignore the first line).\n * 3. Replace the content below \"return (function e(t,n,r) ..\" in this file with the content you copied.\n * 4. Ensure to update lib/thirdpartylibs.xml with any changes.\n */\n\n// ESLint directives.\n/* eslint-disable */\n\n// JSHint directives.\n/* jshint ignore:start */\n\ndefine([], function() {\nreturn (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o 0 && arguments[0] !== undefined ? arguments[0] : {},\n window = _ref.window;\n\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n shimChrome: true,\n shimFirefox: true,\n shimEdge: true,\n shimSafari: true\n };\n\n // Utils.\n var logging = utils.log;\n var browserDetails = utils.detectBrowser(window);\n\n var adapter = {\n browserDetails: browserDetails,\n commonShim: commonShim,\n extractVersion: utils.extractVersion,\n disableLog: utils.disableLog,\n disableWarnings: utils.disableWarnings\n };\n\n // Shim browser if found.\n switch (browserDetails.browser) {\n case 'chrome':\n if (!chromeShim || !chromeShim.shimPeerConnection || !options.shimChrome) {\n logging('Chrome shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming chrome.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = chromeShim;\n\n chromeShim.shimGetUserMedia(window);\n chromeShim.shimMediaStream(window);\n chromeShim.shimPeerConnection(window);\n chromeShim.shimOnTrack(window);\n chromeShim.shimAddTrackRemoveTrack(window);\n chromeShim.shimGetSendersWithDtmf(window);\n chromeShim.shimGetStats(window);\n chromeShim.shimSenderReceiverGetStats(window);\n chromeShim.fixNegotiationNeeded(window);\n\n commonShim.shimRTCIceCandidate(window);\n commonShim.shimConnectionState(window);\n commonShim.shimMaxMessageSize(window);\n commonShim.shimSendThrowTypeError(window);\n commonShim.removeAllowExtmapMixed(window);\n break;\n case 'firefox':\n if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) {\n logging('Firefox shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming firefox.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = firefoxShim;\n\n firefoxShim.shimGetUserMedia(window);\n firefoxShim.shimPeerConnection(window);\n firefoxShim.shimOnTrack(window);\n firefoxShim.shimRemoveStream(window);\n firefoxShim.shimSenderGetStats(window);\n firefoxShim.shimReceiverGetStats(window);\n firefoxShim.shimRTCDataChannel(window);\n firefoxShim.shimAddTransceiver(window);\n firefoxShim.shimCreateOffer(window);\n firefoxShim.shimCreateAnswer(window);\n\n commonShim.shimRTCIceCandidate(window);\n commonShim.shimConnectionState(window);\n commonShim.shimMaxMessageSize(window);\n commonShim.shimSendThrowTypeError(window);\n break;\n case 'edge':\n if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {\n logging('MS edge shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming edge.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = edgeShim;\n\n edgeShim.shimGetUserMedia(window);\n edgeShim.shimGetDisplayMedia(window);\n edgeShim.shimPeerConnection(window);\n edgeShim.shimReplaceTrack(window);\n\n // the edge shim implements the full RTCIceCandidate object.\n\n commonShim.shimMaxMessageSize(window);\n commonShim.shimSendThrowTypeError(window);\n break;\n case 'safari':\n if (!safariShim || !options.shimSafari) {\n logging('Safari shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming safari.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = safariShim;\n\n safariShim.shimRTCIceServerUrls(window);\n safariShim.shimCreateOfferLegacy(window);\n safariShim.shimCallbacksAPI(window);\n safariShim.shimLocalStreamsAPI(window);\n safariShim.shimRemoteStreamsAPI(window);\n safariShim.shimTrackEventTransceiver(window);\n safariShim.shimGetUserMedia(window);\n\n commonShim.shimRTCIceCandidate(window);\n commonShim.shimMaxMessageSize(window);\n commonShim.shimSendThrowTypeError(window);\n commonShim.removeAllowExtmapMixed(window);\n break;\n default:\n logging('Unsupported browser!');\n break;\n }\n\n return adapter;\n}\n\n// Browser shims.\n\n},{\"./chrome/chrome_shim\":3,\"./common_shim\":6,\"./edge/edge_shim\":7,\"./firefox/firefox_shim\":11,\"./safari/safari_shim\":14,\"./utils\":15}],3:[function(require,module,exports){\n\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _getusermedia = require('./getusermedia');\n\nObject.defineProperty(exports, 'shimGetUserMedia', {\n enumerable: true,\n get: function get() {\n return _getusermedia.shimGetUserMedia;\n }\n});\n\nvar _getdisplaymedia = require('./getdisplaymedia');\n\nObject.defineProperty(exports, 'shimGetDisplayMedia', {\n enumerable: true,\n get: function get() {\n return _getdisplaymedia.shimGetDisplayMedia;\n }\n});\nexports.shimMediaStream = shimMediaStream;\nexports.shimOnTrack = shimOnTrack;\nexports.shimGetSendersWithDtmf = shimGetSendersWithDtmf;\nexports.shimGetStats = shimGetStats;\nexports.shimSenderReceiverGetStats = shimSenderReceiverGetStats;\nexports.shimAddTrackRemoveTrackWithNative = shimAddTrackRemoveTrackWithNative;\nexports.shimAddTrackRemoveTrack = shimAddTrackRemoveTrack;\nexports.shimPeerConnection = shimPeerConnection;\nexports.fixNegotiationNeeded = fixNegotiationNeeded;\n\nvar _utils = require('../utils.js');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nfunction shimMediaStream(window) {\n window.MediaStream = window.MediaStream || window.webkitMediaStream;\n}\n\nfunction shimOnTrack(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {\n get: function get() {\n return this._ontrack;\n },\n set: function set(f) {\n if (this._ontrack) {\n this.removeEventListener('track', this._ontrack);\n }\n this.addEventListener('track', this._ontrack = f);\n },\n\n enumerable: true,\n configurable: true\n });\n var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {\n var _this = this;\n\n if (!this._ontrackpoly) {\n this._ontrackpoly = function (e) {\n // onaddstream does not fire when a track is added to an existing\n // stream. But stream.onaddtrack is implemented so we use that.\n e.stream.addEventListener('addtrack', function (te) {\n var receiver = void 0;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = _this.getReceivers().find(function (r) {\n return r.track && r.track.id === te.track.id;\n });\n } else {\n receiver = { track: te.track };\n }\n\n var event = new Event('track');\n event.track = te.track;\n event.receiver = receiver;\n event.transceiver = { receiver: receiver };\n event.streams = [e.stream];\n _this.dispatchEvent(event);\n });\n e.stream.getTracks().forEach(function (track) {\n var receiver = void 0;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = _this.getReceivers().find(function (r) {\n return r.track && r.track.id === track.id;\n });\n } else {\n receiver = { track: track };\n }\n var event = new Event('track');\n event.track = track;\n event.receiver = receiver;\n event.transceiver = { receiver: receiver };\n event.streams = [e.stream];\n _this.dispatchEvent(event);\n });\n };\n this.addEventListener('addstream', this._ontrackpoly);\n }\n return origSetRemoteDescription.apply(this, arguments);\n };\n } else {\n // even if RTCRtpTransceiver is in window, it is only used and\n // emitted in unified-plan. Unfortunately this means we need\n // to unconditionally wrap the event.\n utils.wrapPeerConnectionEvent(window, 'track', function (e) {\n if (!e.transceiver) {\n Object.defineProperty(e, 'transceiver', { value: { receiver: e.receiver } });\n }\n return e;\n });\n }\n}\n\nfunction shimGetSendersWithDtmf(window) {\n // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) {\n var shimSenderWithDtmf = function shimSenderWithDtmf(pc, track) {\n return {\n track: track,\n get dtmf() {\n if (this._dtmf === undefined) {\n if (track.kind === 'audio') {\n this._dtmf = pc.createDTMFSender(track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n },\n _pc: pc\n };\n };\n\n // augment addTrack when getSenders is not available.\n if (!window.RTCPeerConnection.prototype.getSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n this._senders = this._senders || [];\n return this._senders.slice(); // return a copy of the internal state.\n };\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {\n var sender = origAddTrack.apply(this, arguments);\n if (!sender) {\n sender = shimSenderWithDtmf(this, track);\n this._senders.push(sender);\n }\n return sender;\n };\n\n var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {\n origRemoveTrack.apply(this, arguments);\n var idx = this._senders.indexOf(sender);\n if (idx !== -1) {\n this._senders.splice(idx, 1);\n }\n };\n }\n var origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this2 = this;\n\n this._senders = this._senders || [];\n origAddStream.apply(this, [stream]);\n stream.getTracks().forEach(function (track) {\n _this2._senders.push(shimSenderWithDtmf(_this2, track));\n });\n };\n\n var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n var _this3 = this;\n\n this._senders = this._senders || [];\n origRemoveStream.apply(this, [stream]);\n\n stream.getTracks().forEach(function (track) {\n var sender = _this3._senders.find(function (s) {\n return s.track === track;\n });\n if (sender) {\n // remove sender\n _this3._senders.splice(_this3._senders.indexOf(sender), 1);\n }\n });\n };\n } else if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {\n var origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n var _this4 = this;\n\n var senders = origGetSenders.apply(this, []);\n senders.forEach(function (sender) {\n return sender._pc = _this4;\n });\n return senders;\n };\n\n Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {\n get: function get() {\n if (this._dtmf === undefined) {\n if (this.track.kind === 'audio') {\n this._dtmf = this._pc.createDTMFSender(this.track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n }\n });\n }\n}\n\nfunction shimGetStats(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n\n var origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n var _this5 = this;\n\n var _arguments = Array.prototype.slice.call(arguments),\n selector = _arguments[0],\n onSucc = _arguments[1],\n onErr = _arguments[2];\n\n // If selector is a function then we are in the old style stats so just\n // pass back the original getStats format to avoid breaking old users.\n\n\n if (arguments.length > 0 && typeof selector === 'function') {\n return origGetStats.apply(this, arguments);\n }\n\n // When spec-style getStats is supported, return those when called with\n // either no arguments or the selector argument is null.\n if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) {\n return origGetStats.apply(this, []);\n }\n\n var fixChromeStats_ = function fixChromeStats_(response) {\n var standardReport = {};\n var reports = response.result();\n reports.forEach(function (report) {\n var standardStats = {\n id: report.id,\n timestamp: report.timestamp,\n type: {\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n }[report.type] || report.type\n };\n report.names().forEach(function (name) {\n standardStats[name] = report.stat(name);\n });\n standardReport[standardStats.id] = standardStats;\n });\n\n return standardReport;\n };\n\n // shim getStats with maplike support\n var makeMapStats = function makeMapStats(stats) {\n return new Map(Object.keys(stats).map(function (key) {\n return [key, stats[key]];\n }));\n };\n\n if (arguments.length >= 2) {\n var successCallbackWrapper_ = function successCallbackWrapper_(response) {\n onSucc(makeMapStats(fixChromeStats_(response)));\n };\n\n return origGetStats.apply(this, [successCallbackWrapper_, selector]);\n }\n\n // promise-support\n return new Promise(function (resolve, reject) {\n origGetStats.apply(_this5, [function (response) {\n resolve(makeMapStats(fixChromeStats_(response)));\n }, reject]);\n }).then(onSucc, onErr);\n };\n}\n\nfunction shimSenderReceiverGetStats(window) {\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) {\n return;\n }\n\n // shim sender stats.\n if (!('getStats' in window.RTCRtpSender.prototype)) {\n var origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n var _this6 = this;\n\n var senders = origGetSenders.apply(this, []);\n senders.forEach(function (sender) {\n return sender._pc = _this6;\n });\n return senders;\n };\n }\n\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n var sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n var sender = this;\n return this._pc.getStats().then(function (result) {\n return (\n /* Note: this will include stats of all senders that\n * send a track with the same id as sender.track as\n * it is not possible to identify the RTCRtpSender.\n */\n utils.filterStats(result, sender.track, true)\n );\n });\n };\n }\n\n // shim receiver stats.\n if (!('getStats' in window.RTCRtpReceiver.prototype)) {\n var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {\n var _this7 = this;\n\n var receivers = origGetReceivers.apply(this, []);\n receivers.forEach(function (receiver) {\n return receiver._pc = _this7;\n });\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', function (e) {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n var receiver = this;\n return this._pc.getStats().then(function (result) {\n return utils.filterStats(result, receiver.track, false);\n });\n };\n }\n\n if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) {\n return;\n }\n\n // shim RTCPeerConnection.getStats(track).\n var origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) {\n var track = arguments[0];\n var sender = void 0;\n var receiver = void 0;\n var err = void 0;\n this.getSenders().forEach(function (s) {\n if (s.track === track) {\n if (sender) {\n err = true;\n } else {\n sender = s;\n }\n }\n });\n this.getReceivers().forEach(function (r) {\n if (r.track === track) {\n if (receiver) {\n err = true;\n } else {\n receiver = r;\n }\n }\n return r.track === track;\n });\n if (err || sender && receiver) {\n return Promise.reject(new DOMException('There are more than one sender or receiver for the track.', 'InvalidAccessError'));\n } else if (sender) {\n return sender.getStats();\n } else if (receiver) {\n return receiver.getStats();\n }\n return Promise.reject(new DOMException('There is no sender or receiver for the track.', 'InvalidAccessError'));\n }\n return origGetStats.apply(this, arguments);\n };\n}\n\nfunction shimAddTrackRemoveTrackWithNative(window) {\n // shim addTrack/removeTrack with native variants in order to make\n // the interactions with legacy getLocalStreams behave as in other browsers.\n // Keeps a mapping stream.id => [stream, rtpsenders...]\n window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {\n var _this8 = this;\n\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n return Object.keys(this._shimmedLocalStreams).map(function (streamId) {\n return _this8._shimmedLocalStreams[streamId][0];\n });\n };\n\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {\n if (!stream) {\n return origAddTrack.apply(this, arguments);\n }\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n var sender = origAddTrack.apply(this, arguments);\n if (!this._shimmedLocalStreams[stream.id]) {\n this._shimmedLocalStreams[stream.id] = [stream, sender];\n } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {\n this._shimmedLocalStreams[stream.id].push(sender);\n }\n return sender;\n };\n\n var origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this9 = this;\n\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n stream.getTracks().forEach(function (track) {\n var alreadyExists = _this9.getSenders().find(function (s) {\n return s.track === track;\n });\n if (alreadyExists) {\n throw new DOMException('Track already exists.', 'InvalidAccessError');\n }\n });\n var existingSenders = this.getSenders();\n origAddStream.apply(this, arguments);\n var newSenders = this.getSenders().filter(function (newSender) {\n return existingSenders.indexOf(newSender) === -1;\n });\n this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);\n };\n\n var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n delete this._shimmedLocalStreams[stream.id];\n return origRemoveStream.apply(this, arguments);\n };\n\n var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {\n var _this10 = this;\n\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n if (sender) {\n Object.keys(this._shimmedLocalStreams).forEach(function (streamId) {\n var idx = _this10._shimmedLocalStreams[streamId].indexOf(sender);\n if (idx !== -1) {\n _this10._shimmedLocalStreams[streamId].splice(idx, 1);\n }\n if (_this10._shimmedLocalStreams[streamId].length === 1) {\n delete _this10._shimmedLocalStreams[streamId];\n }\n });\n }\n return origRemoveTrack.apply(this, arguments);\n };\n}\n\nfunction shimAddTrackRemoveTrack(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n var browserDetails = utils.detectBrowser(window);\n // shim addTrack and removeTrack.\n if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) {\n return shimAddTrackRemoveTrackWithNative(window);\n }\n\n // also shim pc.getLocalStreams when addTrack is shimmed\n // to return the original streams.\n var origGetLocalStreams = window.RTCPeerConnection.prototype.getLocalStreams;\n window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {\n var _this11 = this;\n\n var nativeStreams = origGetLocalStreams.apply(this);\n this._reverseStreams = this._reverseStreams || {};\n return nativeStreams.map(function (stream) {\n return _this11._reverseStreams[stream.id];\n });\n };\n\n var origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this12 = this;\n\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n stream.getTracks().forEach(function (track) {\n var alreadyExists = _this12.getSenders().find(function (s) {\n return s.track === track;\n });\n if (alreadyExists) {\n throw new DOMException('Track already exists.', 'InvalidAccessError');\n }\n });\n // Add identity mapping for consistency with addTrack.\n // Unless this is being used with a stream from addTrack.\n if (!this._reverseStreams[stream.id]) {\n var newStream = new window.MediaStream(stream.getTracks());\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n stream = newStream;\n }\n origAddStream.apply(this, [stream]);\n };\n\n var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n origRemoveStream.apply(this, [this._streams[stream.id] || stream]);\n delete this._reverseStreams[this._streams[stream.id] ? this._streams[stream.id].id : stream.id];\n delete this._streams[stream.id];\n };\n\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {\n var _this13 = this;\n\n if (this.signalingState === 'closed') {\n throw new DOMException('The RTCPeerConnection\\'s signalingState is \\'closed\\'.', 'InvalidStateError');\n }\n var streams = [].slice.call(arguments, 1);\n if (streams.length !== 1 || !streams[0].getTracks().find(function (t) {\n return t === track;\n })) {\n // this is not fully correct but all we can manage without\n // [[associated MediaStreams]] internal slot.\n throw new DOMException('The adapter.js addTrack polyfill only supports a single ' + ' stream which is associated with the specified track.', 'NotSupportedError');\n }\n\n var alreadyExists = this.getSenders().find(function (s) {\n return s.track === track;\n });\n if (alreadyExists) {\n throw new DOMException('Track already exists.', 'InvalidAccessError');\n }\n\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n var oldStream = this._streams[stream.id];\n if (oldStream) {\n // this is using odd Chrome behaviour, use with caution:\n // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815\n // Note: we rely on the high-level addTrack/dtmf shim to\n // create the sender with a dtmf sender.\n oldStream.addTrack(track);\n\n // Trigger ONN async.\n Promise.resolve().then(function () {\n _this13.dispatchEvent(new Event('negotiationneeded'));\n });\n } else {\n var newStream = new window.MediaStream([track]);\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n this.addStream(newStream);\n }\n return this.getSenders().find(function (s) {\n return s.track === track;\n });\n };\n\n // replace the internal stream id with the external one and\n // vice versa.\n function replaceInternalStreamId(pc, description) {\n var sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(function (internalId) {\n var externalStream = pc._reverseStreams[internalId];\n var internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp: sdp\n });\n }\n function replaceExternalStreamId(pc, description) {\n var sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(function (internalId) {\n var externalStream = pc._reverseStreams[internalId];\n var internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp: sdp\n });\n }\n ['createOffer', 'createAnswer'].forEach(function (method) {\n var nativeMethod = window.RTCPeerConnection.prototype[method];\n var methodObj = _defineProperty({}, method, function () {\n var _this14 = this;\n\n var args = arguments;\n var isLegacyCall = arguments.length && typeof arguments[0] === 'function';\n if (isLegacyCall) {\n return nativeMethod.apply(this, [function (description) {\n var desc = replaceInternalStreamId(_this14, description);\n args[0].apply(null, [desc]);\n }, function (err) {\n if (args[1]) {\n args[1].apply(null, err);\n }\n }, arguments[2]]);\n }\n return nativeMethod.apply(this, arguments).then(function (description) {\n return replaceInternalStreamId(_this14, description);\n });\n });\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n\n var origSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription;\n window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() {\n if (!arguments.length || !arguments[0].type) {\n return origSetLocalDescription.apply(this, arguments);\n }\n arguments[0] = replaceExternalStreamId(this, arguments[0]);\n return origSetLocalDescription.apply(this, arguments);\n };\n\n // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier\n\n var origLocalDescription = Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype, 'localDescription');\n Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', {\n get: function get() {\n var description = origLocalDescription.get.apply(this);\n if (description.type === '') {\n return description;\n }\n return replaceInternalStreamId(this, description);\n }\n });\n\n window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {\n var _this15 = this;\n\n if (this.signalingState === 'closed') {\n throw new DOMException('The RTCPeerConnection\\'s signalingState is \\'closed\\'.', 'InvalidStateError');\n }\n // We can not yet check for sender instanceof RTCRtpSender\n // since we shim RTPSender. So we check if sender._pc is set.\n if (!sender._pc) {\n throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.', 'TypeError');\n }\n var isLocal = sender._pc === this;\n if (!isLocal) {\n throw new DOMException('Sender was not created by this connection.', 'InvalidAccessError');\n }\n\n // Search for the native stream the senders track belongs to.\n this._streams = this._streams || {};\n var stream = void 0;\n Object.keys(this._streams).forEach(function (streamid) {\n var hasTrack = _this15._streams[streamid].getTracks().find(function (track) {\n return sender.track === track;\n });\n if (hasTrack) {\n stream = _this15._streams[streamid];\n }\n });\n\n if (stream) {\n if (stream.getTracks().length === 1) {\n // if this is the last track of the stream, remove the stream. This\n // takes care of any shimmed _senders.\n this.removeStream(this._reverseStreams[stream.id]);\n } else {\n // relying on the same odd chrome behaviour as above.\n stream.removeTrack(sender.track);\n }\n this.dispatchEvent(new Event('negotiationneeded'));\n }\n };\n}\n\nfunction shimPeerConnection(window) {\n var browserDetails = utils.detectBrowser(window);\n\n if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.webkitRTCPeerConnection;\n }\n if (!window.RTCPeerConnection) {\n return;\n }\n\n // shim implicit creation of RTCSessionDescription/RTCIceCandidate\n if (browserDetails.version < 53) {\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {\n var nativeMethod = window.RTCPeerConnection.prototype[method];\n var methodObj = _defineProperty({}, method, function () {\n arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n });\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n\n // support for addIceCandidate(null or undefined)\n var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate;\n window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() {\n if (!arguments[0]) {\n if (arguments[1]) {\n arguments[1].apply(null);\n }\n return Promise.resolve();\n }\n // Firefox 68+ emits and processes {candidate: \"\", ...}, ignore\n // in older versions. Native support planned for Chrome M77.\n if (browserDetails.version < 78 && arguments[0] && arguments[0].candidate === '') {\n return Promise.resolve();\n }\n return nativeAddIceCandidate.apply(this, arguments);\n };\n}\n\nfunction fixNegotiationNeeded(window) {\n utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) {\n var pc = e.target;\n if (pc.signalingState !== 'stable') {\n return;\n }\n return e;\n });\n}\n\n},{\"../utils.js\":15,\"./getdisplaymedia\":4,\"./getusermedia\":5}],4:[function(require,module,exports){\n/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = shimGetDisplayMedia;\nfunction shimGetDisplayMedia(window, getSourceId) {\n if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!window.navigator.mediaDevices) {\n return;\n }\n // getSourceId is a function that returns a promise resolving with\n // the sourceId of the screen/window/tab to be shared.\n if (typeof getSourceId !== 'function') {\n console.error('shimGetDisplayMedia: getSourceId argument is not ' + 'a function');\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {\n return getSourceId(constraints).then(function (sourceId) {\n var widthSpecified = constraints.video && constraints.video.width;\n var heightSpecified = constraints.video && constraints.video.height;\n var frameRateSpecified = constraints.video && constraints.video.frameRate;\n constraints.video = {\n mandatory: {\n chromeMediaSource: 'desktop',\n chromeMediaSourceId: sourceId,\n maxFrameRate: frameRateSpecified || 3\n }\n };\n if (widthSpecified) {\n constraints.video.mandatory.maxWidth = widthSpecified;\n }\n if (heightSpecified) {\n constraints.video.mandatory.maxHeight = heightSpecified;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n });\n };\n}\n\n},{}],5:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimGetUserMedia = shimGetUserMedia;\n\nvar _utils = require('../utils.js');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nvar logging = utils.log;\n\nfunction shimGetUserMedia(window) {\n var navigator = window && window.navigator;\n\n if (!navigator.mediaDevices) {\n return;\n }\n\n var browserDetails = utils.detectBrowser(window);\n\n var constraintsToChrome_ = function constraintsToChrome_(c) {\n if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) !== 'object' || c.mandatory || c.optional) {\n return c;\n }\n var cc = {};\n Object.keys(c).forEach(function (key) {\n if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n return;\n }\n var r = _typeof(c[key]) === 'object' ? c[key] : { ideal: c[key] };\n if (r.exact !== undefined && typeof r.exact === 'number') {\n r.min = r.max = r.exact;\n }\n var oldname_ = function oldname_(prefix, name) {\n if (prefix) {\n return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n }\n return name === 'deviceId' ? 'sourceId' : name;\n };\n if (r.ideal !== undefined) {\n cc.optional = cc.optional || [];\n var oc = {};\n if (typeof r.ideal === 'number') {\n oc[oldname_('min', key)] = r.ideal;\n cc.optional.push(oc);\n oc = {};\n oc[oldname_('max', key)] = r.ideal;\n cc.optional.push(oc);\n } else {\n oc[oldname_('', key)] = r.ideal;\n cc.optional.push(oc);\n }\n }\n if (r.exact !== undefined && typeof r.exact !== 'number') {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_('', key)] = r.exact;\n } else {\n ['min', 'max'].forEach(function (mix) {\n if (r[mix] !== undefined) {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_(mix, key)] = r[mix];\n }\n });\n }\n });\n if (c.advanced) {\n cc.optional = (cc.optional || []).concat(c.advanced);\n }\n return cc;\n };\n\n var shimConstraints_ = function shimConstraints_(constraints, func) {\n if (browserDetails.version >= 61) {\n return func(constraints);\n }\n constraints = JSON.parse(JSON.stringify(constraints));\n if (constraints && _typeof(constraints.audio) === 'object') {\n var remap = function remap(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n constraints = JSON.parse(JSON.stringify(constraints));\n remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');\n remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');\n constraints.audio = constraintsToChrome_(constraints.audio);\n }\n if (constraints && _typeof(constraints.video) === 'object') {\n // Shim facingMode for mobile & surface pro.\n var face = constraints.video.facingMode;\n face = face && ((typeof face === 'undefined' ? 'undefined' : _typeof(face)) === 'object' ? face : { ideal: face });\n var getSupportedFacingModeLies = browserDetails.version < 66;\n\n if (face && (face.exact === 'user' || face.exact === 'environment' || face.ideal === 'user' || face.ideal === 'environment') && !(navigator.mediaDevices.getSupportedConstraints && navigator.mediaDevices.getSupportedConstraints().facingMode && !getSupportedFacingModeLies)) {\n delete constraints.video.facingMode;\n var matches = void 0;\n if (face.exact === 'environment' || face.ideal === 'environment') {\n matches = ['back', 'rear'];\n } else if (face.exact === 'user' || face.ideal === 'user') {\n matches = ['front'];\n }\n if (matches) {\n // Look for matches in label, or use last cam for back (typical).\n return navigator.mediaDevices.enumerateDevices().then(function (devices) {\n devices = devices.filter(function (d) {\n return d.kind === 'videoinput';\n });\n var dev = devices.find(function (d) {\n return matches.some(function (match) {\n return d.label.toLowerCase().includes(match);\n });\n });\n if (!dev && devices.length && matches.includes('back')) {\n dev = devices[devices.length - 1]; // more likely the back cam\n }\n if (dev) {\n constraints.video.deviceId = face.exact ? { exact: dev.deviceId } : { ideal: dev.deviceId };\n }\n constraints.video = constraintsToChrome_(constraints.video);\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n });\n }\n }\n constraints.video = constraintsToChrome_(constraints.video);\n }\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n };\n\n var shimError_ = function shimError_(e) {\n if (browserDetails.version >= 64) {\n return e;\n }\n return {\n name: {\n PermissionDeniedError: 'NotAllowedError',\n PermissionDismissedError: 'NotAllowedError',\n InvalidStateError: 'NotAllowedError',\n DevicesNotFoundError: 'NotFoundError',\n ConstraintNotSatisfiedError: 'OverconstrainedError',\n TrackStartError: 'NotReadableError',\n MediaDeviceFailedDueToShutdown: 'NotAllowedError',\n MediaDeviceKillSwitchOn: 'NotAllowedError',\n TabCaptureError: 'AbortError',\n ScreenCaptureError: 'AbortError',\n DeviceCaptureError: 'AbortError'\n }[e.name] || e.name,\n message: e.message,\n constraint: e.constraint || e.constraintName,\n toString: function toString() {\n return this.name + (this.message && ': ') + this.message;\n }\n };\n };\n\n var getUserMedia_ = function getUserMedia_(constraints, onSuccess, onError) {\n shimConstraints_(constraints, function (c) {\n navigator.webkitGetUserMedia(c, onSuccess, function (e) {\n if (onError) {\n onError(shimError_(e));\n }\n });\n });\n };\n navigator.getUserMedia = getUserMedia_.bind(navigator);\n\n // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n // function which returns a Promise, it does not accept spec-style\n // constraints.\n if (navigator.mediaDevices.getUserMedia) {\n var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function (cs) {\n return shimConstraints_(cs, function (c) {\n return origGetUserMedia(c).then(function (stream) {\n if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) {\n stream.getTracks().forEach(function (track) {\n track.stop();\n });\n throw new DOMException('', 'NotFoundError');\n }\n return stream;\n }, function (e) {\n return Promise.reject(shimError_(e));\n });\n });\n };\n }\n}\n\n},{\"../utils.js\":15}],6:[function(require,module,exports){\n/*\n * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimRTCIceCandidate = shimRTCIceCandidate;\nexports.shimMaxMessageSize = shimMaxMessageSize;\nexports.shimSendThrowTypeError = shimSendThrowTypeError;\nexports.shimConnectionState = shimConnectionState;\nexports.removeAllowExtmapMixed = removeAllowExtmapMixed;\n\nvar _sdp = require('sdp');\n\nvar _sdp2 = _interopRequireDefault(_sdp);\n\nvar _utils = require('./utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction shimRTCIceCandidate(window) {\n // foundation is arbitrarily chosen as an indicator for full support for\n // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface\n if (!window.RTCIceCandidate || window.RTCIceCandidate && 'foundation' in window.RTCIceCandidate.prototype) {\n return;\n }\n\n var NativeRTCIceCandidate = window.RTCIceCandidate;\n window.RTCIceCandidate = function RTCIceCandidate(args) {\n // Remove the a= which shouldn't be part of the candidate string.\n if ((typeof args === 'undefined' ? 'undefined' : _typeof(args)) === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) {\n args = JSON.parse(JSON.stringify(args));\n args.candidate = args.candidate.substr(2);\n }\n\n if (args.candidate && args.candidate.length) {\n // Augment the native candidate with the parsed fields.\n var nativeCandidate = new NativeRTCIceCandidate(args);\n var parsedCandidate = _sdp2.default.parseCandidate(args.candidate);\n var augmentedCandidate = Object.assign(nativeCandidate, parsedCandidate);\n\n // Add a serializer that does not serialize the extra attributes.\n augmentedCandidate.toJSON = function toJSON() {\n return {\n candidate: augmentedCandidate.candidate,\n sdpMid: augmentedCandidate.sdpMid,\n sdpMLineIndex: augmentedCandidate.sdpMLineIndex,\n usernameFragment: augmentedCandidate.usernameFragment\n };\n };\n return augmentedCandidate;\n }\n return new NativeRTCIceCandidate(args);\n };\n window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype;\n\n // Hook up the augmented candidate in onicecandidate and\n // addEventListener('icecandidate', ...)\n utils.wrapPeerConnectionEvent(window, 'icecandidate', function (e) {\n if (e.candidate) {\n Object.defineProperty(e, 'candidate', {\n value: new window.RTCIceCandidate(e.candidate),\n writable: 'false'\n });\n }\n return e;\n });\n}\n\nfunction shimMaxMessageSize(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n var browserDetails = utils.detectBrowser(window);\n\n if (!('sctp' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {\n get: function get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n }\n });\n }\n\n var sctpInDescription = function sctpInDescription(description) {\n if (!description || !description.sdp) {\n return false;\n }\n var sections = _sdp2.default.splitSections(description.sdp);\n sections.shift();\n return sections.some(function (mediaSection) {\n var mLine = _sdp2.default.parseMLine(mediaSection);\n return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1;\n });\n };\n\n var getRemoteFirefoxVersion = function getRemoteFirefoxVersion(description) {\n // TODO: Is there a better solution for detecting Firefox?\n var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\\d+)/);\n if (match === null || match.length < 2) {\n return -1;\n }\n var version = parseInt(match[1], 10);\n // Test for NaN (yes, this is ugly)\n return version !== version ? -1 : version;\n };\n\n var getCanSendMaxMessageSize = function getCanSendMaxMessageSize(remoteIsFirefox) {\n // Every implementation we know can send at least 64 KiB.\n // Note: Although Chrome is technically able to send up to 256 KiB, the\n // data does not reach the other peer reliably.\n // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419\n var canSendMaxMessageSize = 65536;\n if (browserDetails.browser === 'firefox') {\n if (browserDetails.version < 57) {\n if (remoteIsFirefox === -1) {\n // FF < 57 will send in 16 KiB chunks using the deprecated PPID\n // fragmentation.\n canSendMaxMessageSize = 16384;\n } else {\n // However, other FF (and RAWRTC) can reassemble PPID-fragmented\n // messages. Thus, supporting ~2 GiB when sending.\n canSendMaxMessageSize = 2147483637;\n }\n } else if (browserDetails.version < 60) {\n // Currently, all FF >= 57 will reset the remote maximum message size\n // to the default value when a data channel is created at a later\n // stage. :(\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n canSendMaxMessageSize = browserDetails.version === 57 ? 65535 : 65536;\n } else {\n // FF >= 60 supports sending ~2 GiB\n canSendMaxMessageSize = 2147483637;\n }\n }\n return canSendMaxMessageSize;\n };\n\n var getMaxMessageSize = function getMaxMessageSize(description, remoteIsFirefox) {\n // Note: 65536 bytes is the default value from the SDP spec. Also,\n // every implementation we know supports receiving 65536 bytes.\n var maxMessageSize = 65536;\n\n // FF 57 has a slightly incorrect default remote max message size, so\n // we need to adjust it here to avoid a failure when sending.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697\n if (browserDetails.browser === 'firefox' && browserDetails.version === 57) {\n maxMessageSize = 65535;\n }\n\n var match = _sdp2.default.matchPrefix(description.sdp, 'a=max-message-size:');\n if (match.length > 0) {\n maxMessageSize = parseInt(match[0].substr(19), 10);\n } else if (browserDetails.browser === 'firefox' && remoteIsFirefox !== -1) {\n // If the maximum message size is not present in the remote SDP and\n // both local and remote are Firefox, the remote peer can receive\n // ~2 GiB.\n maxMessageSize = 2147483637;\n }\n return maxMessageSize;\n };\n\n var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {\n this._sctp = null;\n // Chrome decided to not expose .sctp in plan-b mode.\n // As usual, adapter.js has to do an 'ugly worakaround'\n // to cover up the mess.\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {\n var _getConfiguration = this.getConfiguration(),\n sdpSemantics = _getConfiguration.sdpSemantics;\n\n if (sdpSemantics === 'plan-b') {\n Object.defineProperty(this, 'sctp', {\n get: function get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n },\n\n enumerable: true,\n configurable: true\n });\n }\n }\n\n if (sctpInDescription(arguments[0])) {\n // Check if the remote is FF.\n var isFirefox = getRemoteFirefoxVersion(arguments[0]);\n\n // Get the maximum message size the local peer is capable of sending\n var canSendMMS = getCanSendMaxMessageSize(isFirefox);\n\n // Get the maximum message size of the remote peer.\n var remoteMMS = getMaxMessageSize(arguments[0], isFirefox);\n\n // Determine final maximum message size\n var maxMessageSize = void 0;\n if (canSendMMS === 0 && remoteMMS === 0) {\n maxMessageSize = Number.POSITIVE_INFINITY;\n } else if (canSendMMS === 0 || remoteMMS === 0) {\n maxMessageSize = Math.max(canSendMMS, remoteMMS);\n } else {\n maxMessageSize = Math.min(canSendMMS, remoteMMS);\n }\n\n // Create a dummy RTCSctpTransport object and the 'maxMessageSize'\n // attribute.\n var sctp = {};\n Object.defineProperty(sctp, 'maxMessageSize', {\n get: function get() {\n return maxMessageSize;\n }\n });\n this._sctp = sctp;\n }\n\n return origSetRemoteDescription.apply(this, arguments);\n };\n}\n\nfunction shimSendThrowTypeError(window) {\n if (!(window.RTCPeerConnection && 'createDataChannel' in window.RTCPeerConnection.prototype)) {\n return;\n }\n\n // Note: Although Firefox >= 57 has a native implementation, the maximum\n // message size can be reset for all data channels at a later stage.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n\n function wrapDcSend(dc, pc) {\n var origDataChannelSend = dc.send;\n dc.send = function send() {\n var data = arguments[0];\n var length = data.length || data.size || data.byteLength;\n if (dc.readyState === 'open' && pc.sctp && length > pc.sctp.maxMessageSize) {\n throw new TypeError('Message too large (can send a maximum of ' + pc.sctp.maxMessageSize + ' bytes)');\n }\n return origDataChannelSend.apply(dc, arguments);\n };\n }\n var origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel;\n window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() {\n var dataChannel = origCreateDataChannel.apply(this, arguments);\n wrapDcSend(dataChannel, this);\n return dataChannel;\n };\n utils.wrapPeerConnectionEvent(window, 'datachannel', function (e) {\n wrapDcSend(e.channel, e.target);\n return e;\n });\n}\n\n/* shims RTCConnectionState by pretending it is the same as iceConnectionState.\n * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12\n * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect\n * since DTLS failures would be hidden. See\n * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827\n * for the Firefox tracking bug.\n */\nfunction shimConnectionState(window) {\n if (!window.RTCPeerConnection || 'connectionState' in window.RTCPeerConnection.prototype) {\n return;\n }\n var proto = window.RTCPeerConnection.prototype;\n Object.defineProperty(proto, 'connectionState', {\n get: function get() {\n return {\n completed: 'connected',\n checking: 'connecting'\n }[this.iceConnectionState] || this.iceConnectionState;\n },\n\n enumerable: true,\n configurable: true\n });\n Object.defineProperty(proto, 'onconnectionstatechange', {\n get: function get() {\n return this._onconnectionstatechange || null;\n },\n set: function set(cb) {\n if (this._onconnectionstatechange) {\n this.removeEventListener('connectionstatechange', this._onconnectionstatechange);\n delete this._onconnectionstatechange;\n }\n if (cb) {\n this.addEventListener('connectionstatechange', this._onconnectionstatechange = cb);\n }\n },\n\n enumerable: true,\n configurable: true\n });\n\n ['setLocalDescription', 'setRemoteDescription'].forEach(function (method) {\n var origMethod = proto[method];\n proto[method] = function () {\n if (!this._connectionstatechangepoly) {\n this._connectionstatechangepoly = function (e) {\n var pc = e.target;\n if (pc._lastConnectionState !== pc.connectionState) {\n pc._lastConnectionState = pc.connectionState;\n var newEvent = new Event('connectionstatechange', e);\n pc.dispatchEvent(newEvent);\n }\n return e;\n };\n this.addEventListener('iceconnectionstatechange', this._connectionstatechangepoly);\n }\n return origMethod.apply(this, arguments);\n };\n });\n}\n\nfunction removeAllowExtmapMixed(window) {\n /* remove a=extmap-allow-mixed for Chrome < M71 */\n if (!window.RTCPeerConnection) {\n return;\n }\n var browserDetails = utils.detectBrowser(window);\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {\n return;\n }\n var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) {\n if (desc && desc.sdp && desc.sdp.indexOf('\\na=extmap-allow-mixed') !== -1) {\n desc.sdp = desc.sdp.split('\\n').filter(function (line) {\n return line.trim() !== 'a=extmap-allow-mixed';\n }).join('\\n');\n }\n return nativeSRD.apply(this, arguments);\n };\n}\n\n},{\"./utils\":15,\"sdp\":17}],7:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;\n\nvar _getusermedia = require('./getusermedia');\n\nObject.defineProperty(exports, 'shimGetUserMedia', {\n enumerable: true,\n get: function get() {\n return _getusermedia.shimGetUserMedia;\n }\n});\n\nvar _getdisplaymedia = require('./getdisplaymedia');\n\nObject.defineProperty(exports, 'shimGetDisplayMedia', {\n enumerable: true,\n get: function get() {\n return _getdisplaymedia.shimGetDisplayMedia;\n }\n});\nexports.shimPeerConnection = shimPeerConnection;\nexports.shimReplaceTrack = shimReplaceTrack;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nvar _filtericeservers = require('./filtericeservers');\n\nvar _rtcpeerconnectionShim = require('rtcpeerconnection-shim');\n\nvar _rtcpeerconnectionShim2 = _interopRequireDefault(_rtcpeerconnectionShim);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction shimPeerConnection(window) {\n var browserDetails = utils.detectBrowser(window);\n\n if (window.RTCIceGatherer) {\n if (!window.RTCIceCandidate) {\n window.RTCIceCandidate = function RTCIceCandidate(args) {\n return args;\n };\n }\n if (!window.RTCSessionDescription) {\n window.RTCSessionDescription = function RTCSessionDescription(args) {\n return args;\n };\n }\n // this adds an additional event listener to MediaStrackTrack that signals\n // when a tracks enabled property was changed. Workaround for a bug in\n // addStream, see below. No longer required in 15025+\n if (browserDetails.version < 15025) {\n var origMSTEnabled = Object.getOwnPropertyDescriptor(window.MediaStreamTrack.prototype, 'enabled');\n Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', {\n set: function set(value) {\n origMSTEnabled.set.call(this, value);\n var ev = new Event('enabled');\n ev.enabled = value;\n this.dispatchEvent(ev);\n }\n });\n }\n }\n\n // ORTC defines the DTMF sender a bit different.\n // https://github.com/w3c/ortc/issues/714\n if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {\n Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {\n get: function get() {\n if (this._dtmf === undefined) {\n if (this.track.kind === 'audio') {\n this._dtmf = new window.RTCDtmfSender(this);\n } else if (this.track.kind === 'video') {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n }\n });\n }\n // Edge currently only implements the RTCDtmfSender, not the\n // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2*\n if (window.RTCDtmfSender && !window.RTCDTMFSender) {\n window.RTCDTMFSender = window.RTCDtmfSender;\n }\n\n var RTCPeerConnectionShim = (0, _rtcpeerconnectionShim2.default)(window, browserDetails.version);\n window.RTCPeerConnection = function RTCPeerConnection(config) {\n if (config && config.iceServers) {\n config.iceServers = (0, _filtericeservers.filterIceServers)(config.iceServers, browserDetails.version);\n utils.log('ICE servers after filtering:', config.iceServers);\n }\n return new RTCPeerConnectionShim(config);\n };\n window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype;\n}\n\nfunction shimReplaceTrack(window) {\n // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614\n if (window.RTCRtpSender && !('replaceTrack' in window.RTCRtpSender.prototype)) {\n window.RTCRtpSender.prototype.replaceTrack = window.RTCRtpSender.prototype.setTrack;\n }\n}\n\n},{\"../utils\":15,\"./filtericeservers\":8,\"./getdisplaymedia\":9,\"./getusermedia\":10,\"rtcpeerconnection-shim\":16}],8:[function(require,module,exports){\n/*\n * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.filterIceServers = filterIceServers;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\n// Edge does not like\n// 1) stun: filtered after 14393 unless ?transport=udp is present\n// 2) turn: that does not have all of turn:host:port?transport=udp\n// 3) turn: with ipv6 addresses\n// 4) turn: occurring muliple times\nfunction filterIceServers(iceServers, edgeVersion) {\n var hasTurn = false;\n iceServers = JSON.parse(JSON.stringify(iceServers));\n return iceServers.filter(function (server) {\n if (server && (server.urls || server.url)) {\n var urls = server.urls || server.url;\n if (server.url && !server.urls) {\n utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');\n }\n var isString = typeof urls === 'string';\n if (isString) {\n urls = [urls];\n }\n urls = urls.filter(function (url) {\n // filter STUN unconditionally.\n if (url.indexOf('stun:') === 0) {\n return false;\n }\n\n var validTurn = url.startsWith('turn') && !url.startsWith('turn:[') && url.includes('transport=udp');\n if (validTurn && !hasTurn) {\n hasTurn = true;\n return true;\n }\n return validTurn && !hasTurn;\n });\n\n delete server.url;\n server.urls = isString ? urls[0] : urls;\n return !!urls.length;\n }\n });\n}\n\n},{\"../utils\":15}],9:[function(require,module,exports){\n/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = shimGetDisplayMedia;\nfunction shimGetDisplayMedia(window) {\n if (!('getDisplayMedia' in window.navigator)) {\n return;\n }\n if (!window.navigator.mediaDevices) {\n return;\n }\n if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia = window.navigator.getDisplayMedia.bind(window.navigator);\n}\n\n},{}],10:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetUserMedia = shimGetUserMedia;\nfunction shimGetUserMedia(window) {\n var navigator = window && window.navigator;\n\n var shimError_ = function shimError_(e) {\n return {\n name: { PermissionDeniedError: 'NotAllowedError' }[e.name] || e.name,\n message: e.message,\n constraint: e.constraint,\n toString: function toString() {\n return this.name;\n }\n };\n };\n\n // getUserMedia error shim.\n var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function (c) {\n return origGetUserMedia(c).catch(function (e) {\n return Promise.reject(shimError_(e));\n });\n };\n}\n\n},{}],11:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _getusermedia = require('./getusermedia');\n\nObject.defineProperty(exports, 'shimGetUserMedia', {\n enumerable: true,\n get: function get() {\n return _getusermedia.shimGetUserMedia;\n }\n});\n\nvar _getdisplaymedia = require('./getdisplaymedia');\n\nObject.defineProperty(exports, 'shimGetDisplayMedia', {\n enumerable: true,\n get: function get() {\n return _getdisplaymedia.shimGetDisplayMedia;\n }\n});\nexports.shimOnTrack = shimOnTrack;\nexports.shimPeerConnection = shimPeerConnection;\nexports.shimSenderGetStats = shimSenderGetStats;\nexports.shimReceiverGetStats = shimReceiverGetStats;\nexports.shimRemoveStream = shimRemoveStream;\nexports.shimRTCDataChannel = shimRTCDataChannel;\nexports.shimAddTransceiver = shimAddTransceiver;\nexports.shimCreateOffer = shimCreateOffer;\nexports.shimCreateAnswer = shimCreateAnswer;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nfunction shimOnTrack(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get: function get() {\n return { receiver: this.receiver };\n }\n });\n }\n}\n\nfunction shimPeerConnection(window) {\n var browserDetails = utils.detectBrowser(window);\n\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {\n return; // probably media.peerconnection.enabled=false in about:config\n }\n if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.mozRTCPeerConnection;\n }\n\n if (browserDetails.version < 53) {\n // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {\n var nativeMethod = window.RTCPeerConnection.prototype[method];\n var methodObj = _defineProperty({}, method, function () {\n arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n });\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n\n // support for addIceCandidate(null or undefined)\n // as well as ignoring {sdpMid, candidate: \"\"}\n if (browserDetails.version < 68) {\n var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate;\n window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() {\n if (!arguments[0]) {\n if (arguments[1]) {\n arguments[1].apply(null);\n }\n return Promise.resolve();\n }\n // Firefox 68+ emits and processes {candidate: \"\", ...}, ignore\n // in older versions.\n if (arguments[0] && arguments[0].candidate === '') {\n return Promise.resolve();\n }\n return nativeAddIceCandidate.apply(this, arguments);\n };\n }\n\n var modernStatsTypes = {\n inboundrtp: 'inbound-rtp',\n outboundrtp: 'outbound-rtp',\n candidatepair: 'candidate-pair',\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n };\n\n var nativeGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n var _arguments = Array.prototype.slice.call(arguments),\n selector = _arguments[0],\n onSucc = _arguments[1],\n onErr = _arguments[2];\n\n return nativeGetStats.apply(this, [selector || null]).then(function (stats) {\n if (browserDetails.version < 53 && !onSucc) {\n // Shim only promise getStats with spec-hyphens in type names\n // Leave callback version alone; misc old uses of forEach before Map\n try {\n stats.forEach(function (stat) {\n stat.type = modernStatsTypes[stat.type] || stat.type;\n });\n } catch (e) {\n if (e.name !== 'TypeError') {\n throw e;\n }\n // Avoid TypeError: \"type\" is read-only, in old versions. 34-43ish\n stats.forEach(function (stat, i) {\n stats.set(i, Object.assign({}, stat, {\n type: modernStatsTypes[stat.type] || stat.type\n }));\n });\n }\n }\n return stats;\n }).then(onSucc, onErr);\n };\n}\n\nfunction shimSenderGetStats(window) {\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {\n return;\n }\n var origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n var _this = this;\n\n var senders = origGetSenders.apply(this, []);\n senders.forEach(function (sender) {\n return sender._pc = _this;\n });\n return senders;\n };\n }\n\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n var sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map());\n };\n}\n\nfunction shimReceiverGetStats(window) {\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {\n return;\n }\n var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {\n var _this2 = this;\n\n var receivers = origGetReceivers.apply(this, []);\n receivers.forEach(function (receiver) {\n return receiver._pc = _this2;\n });\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', function (e) {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n return this._pc.getStats(this.track);\n };\n}\n\nfunction shimRemoveStream(window) {\n if (!window.RTCPeerConnection || 'removeStream' in window.RTCPeerConnection.prototype) {\n return;\n }\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n var _this3 = this;\n\n utils.deprecated('removeStream', 'removeTrack');\n this.getSenders().forEach(function (sender) {\n if (sender.track && stream.getTracks().includes(sender.track)) {\n _this3.removeTrack(sender);\n }\n });\n };\n}\n\nfunction shimRTCDataChannel(window) {\n // rename DataChannel to RTCDataChannel (native fix in FF60):\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851\n if (window.DataChannel && !window.RTCDataChannel) {\n window.RTCDataChannel = window.DataChannel;\n }\n}\n\nfunction shimAddTransceiver(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {\n return;\n }\n var origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;\n if (origAddTransceiver) {\n window.RTCPeerConnection.prototype.addTransceiver = function addTransceiver() {\n this.setParametersPromises = [];\n var initParameters = arguments[1];\n var shouldPerformCheck = initParameters && 'sendEncodings' in initParameters;\n if (shouldPerformCheck) {\n // If sendEncodings params are provided, validate grammar\n initParameters.sendEncodings.forEach(function (encodingParam) {\n if ('rid' in encodingParam) {\n var ridRegex = /^[a-z0-9]{0,16}$/i;\n if (!ridRegex.test(encodingParam.rid)) {\n throw new TypeError('Invalid RID value provided.');\n }\n }\n if ('scaleResolutionDownBy' in encodingParam) {\n if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {\n throw new RangeError('scale_resolution_down_by must be >= 1.0');\n }\n }\n if ('maxFramerate' in encodingParam) {\n if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {\n throw new RangeError('max_framerate must be >= 0.0');\n }\n }\n });\n }\n var transceiver = origAddTransceiver.apply(this, arguments);\n if (shouldPerformCheck) {\n // Check if the init options were applied. If not we do this in an\n // asynchronous way and save the promise reference in a global object.\n // This is an ugly hack, but at the same time is way more robust than\n // checking the sender parameters before and after the createOffer\n // Also note that after the createoffer we are not 100% sure that\n // the params were asynchronously applied so we might miss the\n // opportunity to recreate offer.\n var sender = transceiver.sender;\n\n var params = sender.getParameters();\n if (!('encodings' in params)) {\n params.encodings = initParameters.sendEncodings;\n this.setParametersPromises.push(sender.setParameters(params).catch(function () {}));\n }\n }\n return transceiver;\n };\n }\n}\n\nfunction shimCreateOffer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {\n return;\n }\n var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer = function createOffer() {\n var _this4 = this,\n _arguments2 = arguments;\n\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises).then(function () {\n return origCreateOffer.apply(_this4, _arguments2);\n }).finally(function () {\n _this4.setParametersPromises = [];\n });\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\nfunction shimCreateAnswer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {\n return;\n }\n var origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;\n window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {\n var _this5 = this,\n _arguments3 = arguments;\n\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises).then(function () {\n return origCreateAnswer.apply(_this5, _arguments3);\n }).finally(function () {\n _this5.setParametersPromises = [];\n });\n }\n return origCreateAnswer.apply(this, arguments);\n };\n}\n\n},{\"../utils\":15,\"./getdisplaymedia\":12,\"./getusermedia\":13}],12:[function(require,module,exports){\n/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = shimGetDisplayMedia;\nfunction shimGetDisplayMedia(window, preferredMediaSource) {\n if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!window.navigator.mediaDevices) {\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {\n if (!(constraints && constraints.video)) {\n var err = new DOMException('getDisplayMedia without video ' + 'constraints is undefined');\n err.name = 'NotFoundError';\n // from https://heycam.github.io/webidl/#idl-DOMException-error-names\n err.code = 8;\n return Promise.reject(err);\n }\n if (constraints.video === true) {\n constraints.video = { mediaSource: preferredMediaSource };\n } else {\n constraints.video.mediaSource = preferredMediaSource;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n };\n}\n\n},{}],13:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimGetUserMedia = shimGetUserMedia;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction shimGetUserMedia(window) {\n var browserDetails = utils.detectBrowser(window);\n var navigator = window && window.navigator;\n var MediaStreamTrack = window && window.MediaStreamTrack;\n\n navigator.getUserMedia = function (constraints, onSuccess, onError) {\n // Replace Firefox 44+'s deprecation warning with unprefixed version.\n utils.deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia');\n navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);\n };\n\n if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {\n var remap = function remap(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n\n var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function (c) {\n if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object' && _typeof(c.audio) === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c.audio, 'autoGainControl', 'mozAutoGainControl');\n remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeGetUserMedia(c);\n };\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {\n var nativeGetSettings = MediaStreamTrack.prototype.getSettings;\n MediaStreamTrack.prototype.getSettings = function () {\n var obj = nativeGetSettings.apply(this, arguments);\n remap(obj, 'mozAutoGainControl', 'autoGainControl');\n remap(obj, 'mozNoiseSuppression', 'noiseSuppression');\n return obj;\n };\n }\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {\n var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints;\n MediaStreamTrack.prototype.applyConstraints = function (c) {\n if (this.kind === 'audio' && (typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c, 'autoGainControl', 'mozAutoGainControl');\n remap(c, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeApplyConstraints.apply(this, [c]);\n };\n }\n }\n}\n\n},{\"../utils\":15}],14:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimLocalStreamsAPI = shimLocalStreamsAPI;\nexports.shimRemoteStreamsAPI = shimRemoteStreamsAPI;\nexports.shimCallbacksAPI = shimCallbacksAPI;\nexports.shimGetUserMedia = shimGetUserMedia;\nexports.shimConstraints = shimConstraints;\nexports.shimRTCIceServerUrls = shimRTCIceServerUrls;\nexports.shimTrackEventTransceiver = shimTrackEventTransceiver;\nexports.shimCreateOfferLegacy = shimCreateOfferLegacy;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction shimLocalStreamsAPI(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n return this._localStreams;\n };\n }\n if (!('addStream' in window.RTCPeerConnection.prototype)) {\n var _addTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this = this;\n\n if (!this._localStreams) {\n this._localStreams = [];\n }\n if (!this._localStreams.includes(stream)) {\n this._localStreams.push(stream);\n }\n // Try to emulate Chrome's behaviour of adding in audio-video order.\n // Safari orders by track id.\n stream.getAudioTracks().forEach(function (track) {\n return _addTrack.call(_this, track, stream);\n });\n stream.getVideoTracks().forEach(function (track) {\n return _addTrack.call(_this, track, stream);\n });\n };\n\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track) {\n var stream = arguments[1];\n if (stream) {\n if (!this._localStreams) {\n this._localStreams = [stream];\n } else if (!this._localStreams.includes(stream)) {\n this._localStreams.push(stream);\n }\n }\n return _addTrack.apply(this, arguments);\n };\n }\n if (!('removeStream' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n var _this2 = this;\n\n if (!this._localStreams) {\n this._localStreams = [];\n }\n var index = this._localStreams.indexOf(stream);\n if (index === -1) {\n return;\n }\n this._localStreams.splice(index, 1);\n var tracks = stream.getTracks();\n this.getSenders().forEach(function (sender) {\n if (tracks.includes(sender.track)) {\n _this2.removeTrack(sender);\n }\n });\n };\n }\n}\n\nfunction shimRemoteStreamsAPI(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() {\n return this._remoteStreams ? this._remoteStreams : [];\n };\n }\n if (!('onaddstream' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {\n get: function get() {\n return this._onaddstream;\n },\n set: function set(f) {\n var _this3 = this;\n\n if (this._onaddstream) {\n this.removeEventListener('addstream', this._onaddstream);\n this.removeEventListener('track', this._onaddstreampoly);\n }\n this.addEventListener('addstream', this._onaddstream = f);\n this.addEventListener('track', this._onaddstreampoly = function (e) {\n e.streams.forEach(function (stream) {\n if (!_this3._remoteStreams) {\n _this3._remoteStreams = [];\n }\n if (_this3._remoteStreams.includes(stream)) {\n return;\n }\n _this3._remoteStreams.push(stream);\n var event = new Event('addstream');\n event.stream = stream;\n _this3.dispatchEvent(event);\n });\n });\n }\n });\n var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {\n var pc = this;\n if (!this._onaddstreampoly) {\n this.addEventListener('track', this._onaddstreampoly = function (e) {\n e.streams.forEach(function (stream) {\n if (!pc._remoteStreams) {\n pc._remoteStreams = [];\n }\n if (pc._remoteStreams.indexOf(stream) >= 0) {\n return;\n }\n pc._remoteStreams.push(stream);\n var event = new Event('addstream');\n event.stream = stream;\n pc.dispatchEvent(event);\n });\n });\n }\n return origSetRemoteDescription.apply(pc, arguments);\n };\n }\n}\n\nfunction shimCallbacksAPI(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n var prototype = window.RTCPeerConnection.prototype;\n var origCreateOffer = prototype.createOffer;\n var origCreateAnswer = prototype.createAnswer;\n var setLocalDescription = prototype.setLocalDescription;\n var setRemoteDescription = prototype.setRemoteDescription;\n var addIceCandidate = prototype.addIceCandidate;\n\n prototype.createOffer = function createOffer(successCallback, failureCallback) {\n var options = arguments.length >= 2 ? arguments[2] : arguments[0];\n var promise = origCreateOffer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n prototype.createAnswer = function createAnswer(successCallback, failureCallback) {\n var options = arguments.length >= 2 ? arguments[2] : arguments[0];\n var promise = origCreateAnswer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n var withCallback = function withCallback(description, successCallback, failureCallback) {\n var promise = setLocalDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setLocalDescription = withCallback;\n\n withCallback = function withCallback(description, successCallback, failureCallback) {\n var promise = setRemoteDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setRemoteDescription = withCallback;\n\n withCallback = function withCallback(candidate, successCallback, failureCallback) {\n var promise = addIceCandidate.apply(this, [candidate]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.addIceCandidate = withCallback;\n}\n\nfunction shimGetUserMedia(window) {\n var navigator = window && window.navigator;\n\n if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {\n // shim not needed in Safari 12.1\n var mediaDevices = navigator.mediaDevices;\n var _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);\n navigator.mediaDevices.getUserMedia = function (constraints) {\n return _getUserMedia(shimConstraints(constraints));\n };\n }\n\n if (!navigator.getUserMedia && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {\n navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {\n navigator.mediaDevices.getUserMedia(constraints).then(cb, errcb);\n }.bind(navigator);\n }\n}\n\nfunction shimConstraints(constraints) {\n if (constraints && constraints.video !== undefined) {\n return Object.assign({}, constraints, { video: utils.compactObject(constraints.video) });\n }\n\n return constraints;\n}\n\nfunction shimRTCIceServerUrls(window) {\n // migrate from non-spec RTCIceServer.url to RTCIceServer.urls\n var OrigPeerConnection = window.RTCPeerConnection;\n window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) {\n if (pcConfig && pcConfig.iceServers) {\n var newIceServers = [];\n for (var i = 0; i < pcConfig.iceServers.length; i++) {\n var server = pcConfig.iceServers[i];\n if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) {\n utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');\n server = JSON.parse(JSON.stringify(server));\n server.urls = server.url;\n delete server.url;\n newIceServers.push(server);\n } else {\n newIceServers.push(pcConfig.iceServers[i]);\n }\n }\n pcConfig.iceServers = newIceServers;\n }\n return new OrigPeerConnection(pcConfig, pcConstraints);\n };\n window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;\n // wrap static methods. Currently just generateCertificate.\n if ('generateCertificate' in window.RTCPeerConnection) {\n Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {\n get: function get() {\n return OrigPeerConnection.generateCertificate;\n }\n });\n }\n}\n\nfunction shimTrackEventTransceiver(window) {\n // Add event.transceiver member over deprecated event.receiver\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get: function get() {\n return { receiver: this.receiver };\n }\n });\n }\n}\n\nfunction shimCreateOfferLegacy(window) {\n var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer = function createOffer(offerOptions) {\n if (offerOptions) {\n if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio;\n }\n var audioTransceiver = this.getTransceivers().find(function (transceiver) {\n return transceiver.receiver.track.kind === 'audio';\n });\n if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {\n if (audioTransceiver.direction === 'sendrecv') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('sendonly');\n } else {\n audioTransceiver.direction = 'sendonly';\n }\n } else if (audioTransceiver.direction === 'recvonly') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('inactive');\n } else {\n audioTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) {\n this.addTransceiver('audio');\n }\n\n if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo;\n }\n var videoTransceiver = this.getTransceivers().find(function (transceiver) {\n return transceiver.receiver.track.kind === 'video';\n });\n if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {\n if (videoTransceiver.direction === 'sendrecv') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('sendonly');\n } else {\n videoTransceiver.direction = 'sendonly';\n }\n } else if (videoTransceiver.direction === 'recvonly') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('inactive');\n } else {\n videoTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) {\n this.addTransceiver('video');\n }\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\n},{\"../utils\":15}],15:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.extractVersion = extractVersion;\nexports.wrapPeerConnectionEvent = wrapPeerConnectionEvent;\nexports.disableLog = disableLog;\nexports.disableWarnings = disableWarnings;\nexports.log = log;\nexports.deprecated = deprecated;\nexports.detectBrowser = detectBrowser;\nexports.compactObject = compactObject;\nexports.walkStats = walkStats;\nexports.filterStats = filterStats;\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nvar logDisabled_ = true;\nvar deprecationWarnings_ = true;\n\n/**\n * Extract browser version out of the provided user agent string.\n *\n * @param {!string} uastring userAgent string.\n * @param {!string} expr Regular expression used as match criteria.\n * @param {!number} pos position in the version string to be returned.\n * @return {!number} browser version.\n */\nfunction extractVersion(uastring, expr, pos) {\n var match = uastring.match(expr);\n return match && match.length >= pos && parseInt(match[pos], 10);\n}\n\n// Wraps the peerconnection event eventNameToWrap in a function\n// which returns the modified event object (or false to prevent\n// the event).\nfunction wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {\n if (!window.RTCPeerConnection) {\n return;\n }\n var proto = window.RTCPeerConnection.prototype;\n var nativeAddEventListener = proto.addEventListener;\n proto.addEventListener = function (nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap) {\n return nativeAddEventListener.apply(this, arguments);\n }\n var wrappedCallback = function wrappedCallback(e) {\n var modifiedEvent = wrapper(e);\n if (modifiedEvent) {\n cb(modifiedEvent);\n }\n };\n this._eventMap = this._eventMap || {};\n this._eventMap[cb] = wrappedCallback;\n return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]);\n };\n\n var nativeRemoveEventListener = proto.removeEventListener;\n proto.removeEventListener = function (nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[cb]) {\n return nativeRemoveEventListener.apply(this, arguments);\n }\n var unwrappedCb = this._eventMap[cb];\n delete this._eventMap[cb];\n return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]);\n };\n\n Object.defineProperty(proto, 'on' + eventNameToWrap, {\n get: function get() {\n return this['_on' + eventNameToWrap];\n },\n set: function set(cb) {\n if (this['_on' + eventNameToWrap]) {\n this.removeEventListener(eventNameToWrap, this['_on' + eventNameToWrap]);\n delete this['_on' + eventNameToWrap];\n }\n if (cb) {\n this.addEventListener(eventNameToWrap, this['_on' + eventNameToWrap] = cb);\n }\n },\n\n enumerable: true,\n configurable: true\n });\n}\n\nfunction disableLog(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');\n }\n logDisabled_ = bool;\n return bool ? 'adapter.js logging disabled' : 'adapter.js logging enabled';\n}\n\n/**\n * Disable or enable deprecation warnings\n * @param {!boolean} bool set to true to disable warnings.\n */\nfunction disableWarnings(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');\n }\n deprecationWarnings_ = !bool;\n return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');\n}\n\nfunction log() {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object') {\n if (logDisabled_) {\n return;\n }\n if (typeof console !== 'undefined' && typeof console.log === 'function') {\n console.log.apply(console, arguments);\n }\n }\n}\n\n/**\n * Shows a deprecation warning suggesting the modern and spec-compatible API.\n */\nfunction deprecated(oldMethod, newMethod) {\n if (!deprecationWarnings_) {\n return;\n }\n console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.');\n}\n\n/**\n * Browser detector.\n *\n * @return {object} result containing browser and version\n * properties.\n */\nfunction detectBrowser(window) {\n var navigator = window.navigator;\n\n // Returned result object.\n\n var result = { browser: null, version: null };\n\n // Fail early if it's not a browser\n if (typeof window === 'undefined' || !window.navigator) {\n result.browser = 'Not a browser.';\n return result;\n }\n\n if (navigator.mozGetUserMedia) {\n // Firefox.\n result.browser = 'firefox';\n result.version = extractVersion(navigator.userAgent, /Firefox\\/(\\d+)\\./, 1);\n } else if (navigator.webkitGetUserMedia || window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer) {\n // Chrome, Chromium, Webview, Opera.\n // Version matches Chrome/WebRTC version.\n // Chrome 74 removed webkitGetUserMedia on http as well so we need the\n // more complicated fallback to webkitRTCPeerConnection.\n result.browser = 'chrome';\n result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\\/(\\d+)\\./, 2);\n } else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\\/(\\d+).(\\d+)$/)) {\n // Edge.\n result.browser = 'edge';\n result.version = extractVersion(navigator.userAgent, /Edge\\/(\\d+).(\\d+)$/, 2);\n } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\\/(\\d+)\\./)) {\n // Safari.\n result.browser = 'safari';\n result.version = extractVersion(navigator.userAgent, /AppleWebKit\\/(\\d+)\\./, 1);\n result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype;\n } else {\n // Default fallthrough: not supported.\n result.browser = 'Not a supported browser.';\n return result;\n }\n\n return result;\n}\n\n/**\n * Checks if something is an object.\n *\n * @param {*} val The something you want to check.\n * @return true if val is an object, false otherwise.\n */\nfunction isObject(val) {\n return Object.prototype.toString.call(val) === '[object Object]';\n}\n\n/**\n * Remove all empty objects and undefined values\n * from a nested object -- an enhanced and vanilla version\n * of Lodash's `compact`.\n */\nfunction compactObject(data) {\n if (!isObject(data)) {\n return data;\n }\n\n return Object.keys(data).reduce(function (accumulator, key) {\n var isObj = isObject(data[key]);\n var value = isObj ? compactObject(data[key]) : data[key];\n var isEmptyObject = isObj && !Object.keys(value).length;\n if (value === undefined || isEmptyObject) {\n return accumulator;\n }\n return Object.assign(accumulator, _defineProperty({}, key, value));\n }, {});\n}\n\n/* iterates the stats graph recursively. */\nfunction walkStats(stats, base, resultSet) {\n if (!base || resultSet.has(base.id)) {\n return;\n }\n resultSet.set(base.id, base);\n Object.keys(base).forEach(function (name) {\n if (name.endsWith('Id')) {\n walkStats(stats, stats.get(base[name]), resultSet);\n } else if (name.endsWith('Ids')) {\n base[name].forEach(function (id) {\n walkStats(stats, stats.get(id), resultSet);\n });\n }\n });\n}\n\n/* filter getStats for a sender/receiver track. */\nfunction filterStats(result, track, outbound) {\n var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';\n var filteredResult = new Map();\n if (track === null) {\n return filteredResult;\n }\n var trackStats = [];\n result.forEach(function (value) {\n if (value.type === 'track' && value.trackIdentifier === track.id) {\n trackStats.push(value);\n }\n });\n trackStats.forEach(function (trackStat) {\n result.forEach(function (stats) {\n if (stats.type === streamStatsType && stats.trackId === trackStat.id) {\n walkStats(result, stats, filteredResult);\n }\n });\n });\n return filteredResult;\n}\n\n},{}],16:[function(require,module,exports){\n/*\n * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\n\nfunction fixStatsType(stat) {\n return {\n inboundrtp: 'inbound-rtp',\n outboundrtp: 'outbound-rtp',\n candidatepair: 'candidate-pair',\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n }[stat.type] || stat.type;\n}\n\nfunction writeMediaSection(transceiver, caps, type, stream, dtlsRole) {\n var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n // Map ICE parameters (ufrag, pwd) to SDP.\n sdp += SDPUtils.writeIceParameters(\n transceiver.iceGatherer.getLocalParameters());\n\n // Map DTLS parameters to SDP.\n sdp += SDPUtils.writeDtlsParameters(\n transceiver.dtlsTransport.getLocalParameters(),\n type === 'offer' ? 'actpass' : dtlsRole || 'active');\n\n sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n if (transceiver.rtpSender && transceiver.rtpReceiver) {\n sdp += 'a=sendrecv\\r\\n';\n } else if (transceiver.rtpSender) {\n sdp += 'a=sendonly\\r\\n';\n } else if (transceiver.rtpReceiver) {\n sdp += 'a=recvonly\\r\\n';\n } else {\n sdp += 'a=inactive\\r\\n';\n }\n\n if (transceiver.rtpSender) {\n var trackId = transceiver.rtpSender._initialTrackId ||\n transceiver.rtpSender.track.id;\n transceiver.rtpSender._initialTrackId = trackId;\n // spec.\n var msid = 'msid:' + (stream ? stream.id : '-') + ' ' +\n trackId + '\\r\\n';\n sdp += 'a=' + msid;\n // for Chrome. Legacy should no longer be required.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' ' + msid;\n\n // RTX\n if (transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' ' + msid;\n sdp += 'a=ssrc-group:FID ' +\n transceiver.sendEncodingParameters[0].ssrc + ' ' +\n transceiver.sendEncodingParameters[0].rtx.ssrc +\n '\\r\\n';\n }\n }\n // FIXME: this should be written by writeRtpDescription.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n }\n return sdp;\n}\n\n// Edge does not like\n// 1) stun: filtered after 14393 unless ?transport=udp is present\n// 2) turn: that does not have all of turn:host:port?transport=udp\n// 3) turn: with ipv6 addresses\n// 4) turn: occurring muliple times\nfunction filterIceServers(iceServers, edgeVersion) {\n var hasTurn = false;\n iceServers = JSON.parse(JSON.stringify(iceServers));\n return iceServers.filter(function(server) {\n if (server && (server.urls || server.url)) {\n var urls = server.urls || server.url;\n if (server.url && !server.urls) {\n console.warn('RTCIceServer.url is deprecated! Use urls instead.');\n }\n var isString = typeof urls === 'string';\n if (isString) {\n urls = [urls];\n }\n urls = urls.filter(function(url) {\n var validTurn = url.indexOf('turn:') === 0 &&\n url.indexOf('transport=udp') !== -1 &&\n url.indexOf('turn:[') === -1 &&\n !hasTurn;\n\n if (validTurn) {\n hasTurn = true;\n return true;\n }\n return url.indexOf('stun:') === 0 && edgeVersion >= 14393 &&\n url.indexOf('?transport=udp') === -1;\n });\n\n delete server.url;\n server.urls = isString ? urls[0] : urls;\n return !!urls.length;\n }\n });\n}\n\n// Determines the intersection of local and remote capabilities.\nfunction getCommonCapabilities(localCapabilities, remoteCapabilities) {\n var commonCapabilities = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: []\n };\n\n var findCodecByPayloadType = function(pt, codecs) {\n pt = parseInt(pt, 10);\n for (var i = 0; i < codecs.length; i++) {\n if (codecs[i].payloadType === pt ||\n codecs[i].preferredPayloadType === pt) {\n return codecs[i];\n }\n }\n };\n\n var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) {\n var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);\n var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);\n return lCodec && rCodec &&\n lCodec.name.toLowerCase() === rCodec.name.toLowerCase();\n };\n\n localCapabilities.codecs.forEach(function(lCodec) {\n for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n var rCodec = remoteCapabilities.codecs[i];\n if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n lCodec.clockRate === rCodec.clockRate) {\n if (lCodec.name.toLowerCase() === 'rtx' &&\n lCodec.parameters && rCodec.parameters.apt) {\n // for RTX we need to find the local rtx that has a apt\n // which points to the same local codec as the remote one.\n if (!rtxCapabilityMatches(lCodec, rCodec,\n localCapabilities.codecs, remoteCapabilities.codecs)) {\n continue;\n }\n }\n rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy\n // number of channels is the highest common number of channels\n rCodec.numChannels = Math.min(lCodec.numChannels,\n rCodec.numChannels);\n // push rCodec so we reply with offerer payload type\n commonCapabilities.codecs.push(rCodec);\n\n // determine common feedback mechanisms\n rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n if (lCodec.rtcpFeedback[j].type === fb.type &&\n lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n return true;\n }\n }\n return false;\n });\n // FIXME: also need to determine .parameters\n // see https://github.com/openpeer/ortc/issues/569\n break;\n }\n }\n });\n\n localCapabilities.headerExtensions.forEach(function(lHeaderExtension) {\n for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n i++) {\n var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n if (lHeaderExtension.uri === rHeaderExtension.uri) {\n commonCapabilities.headerExtensions.push(rHeaderExtension);\n break;\n }\n }\n });\n\n // FIXME: fecMechanisms\n return commonCapabilities;\n}\n\n// is action=setLocalDescription with type allowed in signalingState\nfunction isActionAllowedInSignalingState(action, type, signalingState) {\n return {\n offer: {\n setLocalDescription: ['stable', 'have-local-offer'],\n setRemoteDescription: ['stable', 'have-remote-offer']\n },\n answer: {\n setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],\n setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']\n }\n }[type][action].indexOf(signalingState) !== -1;\n}\n\nfunction maybeAddCandidate(iceTransport, candidate) {\n // Edge's internal representation adds some fields therefore\n // not all fieldѕ are taken into account.\n var alreadyAdded = iceTransport.getRemoteCandidates()\n .find(function(remoteCandidate) {\n return candidate.foundation === remoteCandidate.foundation &&\n candidate.ip === remoteCandidate.ip &&\n candidate.port === remoteCandidate.port &&\n candidate.priority === remoteCandidate.priority &&\n candidate.protocol === remoteCandidate.protocol &&\n candidate.type === remoteCandidate.type;\n });\n if (!alreadyAdded) {\n iceTransport.addRemoteCandidate(candidate);\n }\n return !alreadyAdded;\n}\n\n\nfunction makeError(name, description) {\n var e = new Error(description);\n e.name = name;\n // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names\n e.code = {\n NotSupportedError: 9,\n InvalidStateError: 11,\n InvalidAccessError: 15,\n TypeError: undefined,\n OperationError: undefined\n }[name];\n return e;\n}\n\nmodule.exports = function(window, edgeVersion) {\n // https://w3c.github.io/mediacapture-main/#mediastream\n // Helper function to add the track to the stream and\n // dispatch the event ourselves.\n function addTrackToStreamAndFireEvent(track, stream) {\n stream.addTrack(track);\n stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack',\n {track: track}));\n }\n\n function removeTrackFromStreamAndFireEvent(track, stream) {\n stream.removeTrack(track);\n stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack',\n {track: track}));\n }\n\n function fireAddTrack(pc, track, receiver, streams) {\n var trackEvent = new Event('track');\n trackEvent.track = track;\n trackEvent.receiver = receiver;\n trackEvent.transceiver = {receiver: receiver};\n trackEvent.streams = streams;\n window.setTimeout(function() {\n pc._dispatchEvent('track', trackEvent);\n });\n }\n\n var RTCPeerConnection = function(config) {\n var pc = this;\n\n var _eventTarget = document.createDocumentFragment();\n ['addEventListener', 'removeEventListener', 'dispatchEvent']\n .forEach(function(method) {\n pc[method] = _eventTarget[method].bind(_eventTarget);\n });\n\n this.canTrickleIceCandidates = null;\n\n this.needNegotiation = false;\n\n this.localStreams = [];\n this.remoteStreams = [];\n\n this._localDescription = null;\n this._remoteDescription = null;\n\n this.signalingState = 'stable';\n this.iceConnectionState = 'new';\n this.connectionState = 'new';\n this.iceGatheringState = 'new';\n\n config = JSON.parse(JSON.stringify(config || {}));\n\n this.usingBundle = config.bundlePolicy === 'max-bundle';\n if (config.rtcpMuxPolicy === 'negotiate') {\n throw(makeError('NotSupportedError',\n 'rtcpMuxPolicy \\'negotiate\\' is not supported'));\n } else if (!config.rtcpMuxPolicy) {\n config.rtcpMuxPolicy = 'require';\n }\n\n switch (config.iceTransportPolicy) {\n case 'all':\n case 'relay':\n break;\n default:\n config.iceTransportPolicy = 'all';\n break;\n }\n\n switch (config.bundlePolicy) {\n case 'balanced':\n case 'max-compat':\n case 'max-bundle':\n break;\n default:\n config.bundlePolicy = 'balanced';\n break;\n }\n\n config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);\n\n this._iceGatherers = [];\n if (config.iceCandidatePoolSize) {\n for (var i = config.iceCandidatePoolSize; i > 0; i--) {\n this._iceGatherers.push(new window.RTCIceGatherer({\n iceServers: config.iceServers,\n gatherPolicy: config.iceTransportPolicy\n }));\n }\n } else {\n config.iceCandidatePoolSize = 0;\n }\n\n this._config = config;\n\n // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n // everything that is needed to describe a SDP m-line.\n this.transceivers = [];\n\n this._sdpSessionId = SDPUtils.generateSessionId();\n this._sdpSessionVersion = 0;\n\n this._dtlsRole = undefined; // role for a=setup to use in answers.\n\n this._isClosed = false;\n };\n\n Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', {\n configurable: true,\n get: function() {\n return this._localDescription;\n }\n });\n Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', {\n configurable: true,\n get: function() {\n return this._remoteDescription;\n }\n });\n\n // set up event handlers on prototype\n RTCPeerConnection.prototype.onicecandidate = null;\n RTCPeerConnection.prototype.onaddstream = null;\n RTCPeerConnection.prototype.ontrack = null;\n RTCPeerConnection.prototype.onremovestream = null;\n RTCPeerConnection.prototype.onsignalingstatechange = null;\n RTCPeerConnection.prototype.oniceconnectionstatechange = null;\n RTCPeerConnection.prototype.onconnectionstatechange = null;\n RTCPeerConnection.prototype.onicegatheringstatechange = null;\n RTCPeerConnection.prototype.onnegotiationneeded = null;\n RTCPeerConnection.prototype.ondatachannel = null;\n\n RTCPeerConnection.prototype._dispatchEvent = function(name, event) {\n if (this._isClosed) {\n return;\n }\n this.dispatchEvent(event);\n if (typeof this['on' + name] === 'function') {\n this['on' + name](event);\n }\n };\n\n RTCPeerConnection.prototype._emitGatheringStateChange = function() {\n var event = new Event('icegatheringstatechange');\n this._dispatchEvent('icegatheringstatechange', event);\n };\n\n RTCPeerConnection.prototype.getConfiguration = function() {\n return this._config;\n };\n\n RTCPeerConnection.prototype.getLocalStreams = function() {\n return this.localStreams;\n };\n\n RTCPeerConnection.prototype.getRemoteStreams = function() {\n return this.remoteStreams;\n };\n\n // internal helper to create a transceiver object.\n // (which is not yet the same as the WebRTC 1.0 transceiver)\n RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) {\n var hasBundleTransport = this.transceivers.length > 0;\n var transceiver = {\n track: null,\n iceGatherer: null,\n iceTransport: null,\n dtlsTransport: null,\n localCapabilities: null,\n remoteCapabilities: null,\n rtpSender: null,\n rtpReceiver: null,\n kind: kind,\n mid: null,\n sendEncodingParameters: null,\n recvEncodingParameters: null,\n stream: null,\n associatedRemoteMediaStreams: [],\n wantReceive: true\n };\n if (this.usingBundle && hasBundleTransport) {\n transceiver.iceTransport = this.transceivers[0].iceTransport;\n transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;\n } else {\n var transports = this._createIceAndDtlsTransports();\n transceiver.iceTransport = transports.iceTransport;\n transceiver.dtlsTransport = transports.dtlsTransport;\n }\n if (!doNotAdd) {\n this.transceivers.push(transceiver);\n }\n return transceiver;\n };\n\n RTCPeerConnection.prototype.addTrack = function(track, stream) {\n if (this._isClosed) {\n throw makeError('InvalidStateError',\n 'Attempted to call addTrack on a closed peerconnection.');\n }\n\n var alreadyExists = this.transceivers.find(function(s) {\n return s.track === track;\n });\n\n if (alreadyExists) {\n throw makeError('InvalidAccessError', 'Track already exists.');\n }\n\n var transceiver;\n for (var i = 0; i < this.transceivers.length; i++) {\n if (!this.transceivers[i].track &&\n this.transceivers[i].kind === track.kind) {\n transceiver = this.transceivers[i];\n }\n }\n if (!transceiver) {\n transceiver = this._createTransceiver(track.kind);\n }\n\n this._maybeFireNegotiationNeeded();\n\n if (this.localStreams.indexOf(stream) === -1) {\n this.localStreams.push(stream);\n }\n\n transceiver.track = track;\n transceiver.stream = stream;\n transceiver.rtpSender = new window.RTCRtpSender(track,\n transceiver.dtlsTransport);\n return transceiver.rtpSender;\n };\n\n RTCPeerConnection.prototype.addStream = function(stream) {\n var pc = this;\n if (edgeVersion >= 15025) {\n stream.getTracks().forEach(function(track) {\n pc.addTrack(track, stream);\n });\n } else {\n // Clone is necessary for local demos mostly, attaching directly\n // to two different senders does not work (build 10547).\n // Fixed in 15025 (or earlier)\n var clonedStream = stream.clone();\n stream.getTracks().forEach(function(track, idx) {\n var clonedTrack = clonedStream.getTracks()[idx];\n track.addEventListener('enabled', function(event) {\n clonedTrack.enabled = event.enabled;\n });\n });\n clonedStream.getTracks().forEach(function(track) {\n pc.addTrack(track, clonedStream);\n });\n }\n };\n\n RTCPeerConnection.prototype.removeTrack = function(sender) {\n if (this._isClosed) {\n throw makeError('InvalidStateError',\n 'Attempted to call removeTrack on a closed peerconnection.');\n }\n\n if (!(sender instanceof window.RTCRtpSender)) {\n throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' +\n 'does not implement interface RTCRtpSender.');\n }\n\n var transceiver = this.transceivers.find(function(t) {\n return t.rtpSender === sender;\n });\n\n if (!transceiver) {\n throw makeError('InvalidAccessError',\n 'Sender was not created by this connection.');\n }\n var stream = transceiver.stream;\n\n transceiver.rtpSender.stop();\n transceiver.rtpSender = null;\n transceiver.track = null;\n transceiver.stream = null;\n\n // remove the stream from the set of local streams\n var localStreams = this.transceivers.map(function(t) {\n return t.stream;\n });\n if (localStreams.indexOf(stream) === -1 &&\n this.localStreams.indexOf(stream) > -1) {\n this.localStreams.splice(this.localStreams.indexOf(stream), 1);\n }\n\n this._maybeFireNegotiationNeeded();\n };\n\n RTCPeerConnection.prototype.removeStream = function(stream) {\n var pc = this;\n stream.getTracks().forEach(function(track) {\n var sender = pc.getSenders().find(function(s) {\n return s.track === track;\n });\n if (sender) {\n pc.removeTrack(sender);\n }\n });\n };\n\n RTCPeerConnection.prototype.getSenders = function() {\n return this.transceivers.filter(function(transceiver) {\n return !!transceiver.rtpSender;\n })\n .map(function(transceiver) {\n return transceiver.rtpSender;\n });\n };\n\n RTCPeerConnection.prototype.getReceivers = function() {\n return this.transceivers.filter(function(transceiver) {\n return !!transceiver.rtpReceiver;\n })\n .map(function(transceiver) {\n return transceiver.rtpReceiver;\n });\n };\n\n\n RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex,\n usingBundle) {\n var pc = this;\n if (usingBundle && sdpMLineIndex > 0) {\n return this.transceivers[0].iceGatherer;\n } else if (this._iceGatherers.length) {\n return this._iceGatherers.shift();\n }\n var iceGatherer = new window.RTCIceGatherer({\n iceServers: this._config.iceServers,\n gatherPolicy: this._config.iceTransportPolicy\n });\n Object.defineProperty(iceGatherer, 'state',\n {value: 'new', writable: true}\n );\n\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];\n this.transceivers[sdpMLineIndex].bufferCandidates = function(event) {\n var end = !event.candidate || Object.keys(event.candidate).length === 0;\n // polyfill since RTCIceGatherer.state is not implemented in\n // Edge 10547 yet.\n iceGatherer.state = end ? 'completed' : 'gathering';\n if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {\n pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);\n }\n };\n iceGatherer.addEventListener('localcandidate',\n this.transceivers[sdpMLineIndex].bufferCandidates);\n return iceGatherer;\n };\n\n // start gathering from an RTCIceGatherer.\n RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) {\n var pc = this;\n var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;\n if (iceGatherer.onlocalcandidate) {\n return;\n }\n var bufferedCandidateEvents =\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents;\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;\n iceGatherer.removeEventListener('localcandidate',\n this.transceivers[sdpMLineIndex].bufferCandidates);\n iceGatherer.onlocalcandidate = function(evt) {\n if (pc.usingBundle && sdpMLineIndex > 0) {\n // if we know that we use bundle we can drop candidates with\n // ѕdpMLineIndex > 0. If we don't do this then our state gets\n // confused since we dispose the extra ice gatherer.\n return;\n }\n var event = new Event('icecandidate');\n event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n var cand = evt.candidate;\n // Edge emits an empty object for RTCIceCandidateComplete‥\n var end = !cand || Object.keys(cand).length === 0;\n if (end) {\n // polyfill since RTCIceGatherer.state is not implemented in\n // Edge 10547 yet.\n if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {\n iceGatherer.state = 'completed';\n }\n } else {\n if (iceGatherer.state === 'new') {\n iceGatherer.state = 'gathering';\n }\n // RTCIceCandidate doesn't have a component, needs to be added\n cand.component = 1;\n // also the usernameFragment. TODO: update SDP to take both variants.\n cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;\n\n var serializedCandidate = SDPUtils.writeCandidate(cand);\n event.candidate = Object.assign(event.candidate,\n SDPUtils.parseCandidate(serializedCandidate));\n\n event.candidate.candidate = serializedCandidate;\n event.candidate.toJSON = function() {\n return {\n candidate: event.candidate.candidate,\n sdpMid: event.candidate.sdpMid,\n sdpMLineIndex: event.candidate.sdpMLineIndex,\n usernameFragment: event.candidate.usernameFragment\n };\n };\n }\n\n // update local description.\n var sections = SDPUtils.getMediaSections(pc._localDescription.sdp);\n if (!end) {\n sections[event.candidate.sdpMLineIndex] +=\n 'a=' + event.candidate.candidate + '\\r\\n';\n } else {\n sections[event.candidate.sdpMLineIndex] +=\n 'a=end-of-candidates\\r\\n';\n }\n pc._localDescription.sdp =\n SDPUtils.getDescription(pc._localDescription.sdp) +\n sections.join('');\n var complete = pc.transceivers.every(function(transceiver) {\n return transceiver.iceGatherer &&\n transceiver.iceGatherer.state === 'completed';\n });\n\n if (pc.iceGatheringState !== 'gathering') {\n pc.iceGatheringState = 'gathering';\n pc._emitGatheringStateChange();\n }\n\n // Emit candidate. Also emit null candidate when all gatherers are\n // complete.\n if (!end) {\n pc._dispatchEvent('icecandidate', event);\n }\n if (complete) {\n pc._dispatchEvent('icecandidate', new Event('icecandidate'));\n pc.iceGatheringState = 'complete';\n pc._emitGatheringStateChange();\n }\n };\n\n // emit already gathered candidates.\n window.setTimeout(function() {\n bufferedCandidateEvents.forEach(function(e) {\n iceGatherer.onlocalcandidate(e);\n });\n }, 0);\n };\n\n // Create ICE transport and DTLS transport.\n RTCPeerConnection.prototype._createIceAndDtlsTransports = function() {\n var pc = this;\n var iceTransport = new window.RTCIceTransport(null);\n iceTransport.onicestatechange = function() {\n pc._updateIceConnectionState();\n pc._updateConnectionState();\n };\n\n var dtlsTransport = new window.RTCDtlsTransport(iceTransport);\n dtlsTransport.ondtlsstatechange = function() {\n pc._updateConnectionState();\n };\n dtlsTransport.onerror = function() {\n // onerror does not set state to failed by itself.\n Object.defineProperty(dtlsTransport, 'state',\n {value: 'failed', writable: true});\n pc._updateConnectionState();\n };\n\n return {\n iceTransport: iceTransport,\n dtlsTransport: dtlsTransport\n };\n };\n\n // Destroy ICE gatherer, ICE transport and DTLS transport.\n // Without triggering the callbacks.\n RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function(\n sdpMLineIndex) {\n var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;\n if (iceGatherer) {\n delete iceGatherer.onlocalcandidate;\n delete this.transceivers[sdpMLineIndex].iceGatherer;\n }\n var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;\n if (iceTransport) {\n delete iceTransport.onicestatechange;\n delete this.transceivers[sdpMLineIndex].iceTransport;\n }\n var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;\n if (dtlsTransport) {\n delete dtlsTransport.ondtlsstatechange;\n delete dtlsTransport.onerror;\n delete this.transceivers[sdpMLineIndex].dtlsTransport;\n }\n };\n\n // Start the RTP Sender and Receiver for a transceiver.\n RTCPeerConnection.prototype._transceive = function(transceiver,\n send, recv) {\n var params = getCommonCapabilities(transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n if (send && transceiver.rtpSender) {\n params.encodings = transceiver.sendEncodingParameters;\n params.rtcp = {\n cname: SDPUtils.localCName,\n compound: transceiver.rtcpParameters.compound\n };\n if (transceiver.recvEncodingParameters.length) {\n params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n }\n transceiver.rtpSender.send(params);\n }\n if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {\n // remove RTX field in Edge 14942\n if (transceiver.kind === 'video'\n && transceiver.recvEncodingParameters\n && edgeVersion < 15019) {\n transceiver.recvEncodingParameters.forEach(function(p) {\n delete p.rtx;\n });\n }\n if (transceiver.recvEncodingParameters.length) {\n params.encodings = transceiver.recvEncodingParameters;\n } else {\n params.encodings = [{}];\n }\n params.rtcp = {\n compound: transceiver.rtcpParameters.compound\n };\n if (transceiver.rtcpParameters.cname) {\n params.rtcp.cname = transceiver.rtcpParameters.cname;\n }\n if (transceiver.sendEncodingParameters.length) {\n params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n }\n transceiver.rtpReceiver.receive(params);\n }\n };\n\n RTCPeerConnection.prototype.setLocalDescription = function(description) {\n var pc = this;\n\n // Note: pranswer is not supported.\n if (['offer', 'answer'].indexOf(description.type) === -1) {\n return Promise.reject(makeError('TypeError',\n 'Unsupported type \"' + description.type + '\"'));\n }\n\n if (!isActionAllowedInSignalingState('setLocalDescription',\n description.type, pc.signalingState) || pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not set local ' + description.type +\n ' in state ' + pc.signalingState));\n }\n\n var sections;\n var sessionpart;\n if (description.type === 'offer') {\n // VERY limited support for SDP munging. Limited to:\n // * changing the order of codecs\n sections = SDPUtils.splitSections(description.sdp);\n sessionpart = sections.shift();\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var caps = SDPUtils.parseRtpParameters(mediaSection);\n pc.transceivers[sdpMLineIndex].localCapabilities = caps;\n });\n\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n pc._gather(transceiver.mid, sdpMLineIndex);\n });\n } else if (description.type === 'answer') {\n sections = SDPUtils.splitSections(pc._remoteDescription.sdp);\n sessionpart = sections.shift();\n var isIceLite = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-lite').length > 0;\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var transceiver = pc.transceivers[sdpMLineIndex];\n var iceGatherer = transceiver.iceGatherer;\n var iceTransport = transceiver.iceTransport;\n var dtlsTransport = transceiver.dtlsTransport;\n var localCapabilities = transceiver.localCapabilities;\n var remoteCapabilities = transceiver.remoteCapabilities;\n\n // treat bundle-only as not-rejected.\n var rejected = SDPUtils.isRejected(mediaSection) &&\n SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;\n\n if (!rejected && !transceiver.rejected) {\n var remoteIceParameters = SDPUtils.getIceParameters(\n mediaSection, sessionpart);\n var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n mediaSection, sessionpart);\n if (isIceLite) {\n remoteDtlsParameters.role = 'server';\n }\n\n if (!pc.usingBundle || sdpMLineIndex === 0) {\n pc._gather(transceiver.mid, sdpMLineIndex);\n if (iceTransport.state === 'new') {\n iceTransport.start(iceGatherer, remoteIceParameters,\n isIceLite ? 'controlling' : 'controlled');\n }\n if (dtlsTransport.state === 'new') {\n dtlsTransport.start(remoteDtlsParameters);\n }\n }\n\n // Calculate intersection of capabilities.\n var params = getCommonCapabilities(localCapabilities,\n remoteCapabilities);\n\n // Start the RTCRtpSender. The RTCRtpReceiver for this\n // transceiver has already been started in setRemoteDescription.\n pc._transceive(transceiver,\n params.codecs.length > 0,\n false);\n }\n });\n }\n\n pc._localDescription = {\n type: description.type,\n sdp: description.sdp\n };\n if (description.type === 'offer') {\n pc._updateSignalingState('have-local-offer');\n } else {\n pc._updateSignalingState('stable');\n }\n\n return Promise.resolve();\n };\n\n RTCPeerConnection.prototype.setRemoteDescription = function(description) {\n var pc = this;\n\n // Note: pranswer is not supported.\n if (['offer', 'answer'].indexOf(description.type) === -1) {\n return Promise.reject(makeError('TypeError',\n 'Unsupported type \"' + description.type + '\"'));\n }\n\n if (!isActionAllowedInSignalingState('setRemoteDescription',\n description.type, pc.signalingState) || pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not set remote ' + description.type +\n ' in state ' + pc.signalingState));\n }\n\n var streams = {};\n pc.remoteStreams.forEach(function(stream) {\n streams[stream.id] = stream;\n });\n var receiverList = [];\n var sections = SDPUtils.splitSections(description.sdp);\n var sessionpart = sections.shift();\n var isIceLite = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-lite').length > 0;\n var usingBundle = SDPUtils.matchPrefix(sessionpart,\n 'a=group:BUNDLE ').length > 0;\n pc.usingBundle = usingBundle;\n var iceOptions = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-options:')[0];\n if (iceOptions) {\n pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ')\n .indexOf('trickle') >= 0;\n } else {\n pc.canTrickleIceCandidates = false;\n }\n\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var lines = SDPUtils.splitLines(mediaSection);\n var kind = SDPUtils.getKind(mediaSection);\n // treat bundle-only as not-rejected.\n var rejected = SDPUtils.isRejected(mediaSection) &&\n SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;\n var protocol = lines[0].substr(2).split(' ')[2];\n\n var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n var remoteMsid = SDPUtils.parseMsid(mediaSection);\n\n var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier();\n\n // Reject datachannels which are not implemented yet.\n if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' ||\n protocol === 'UDP/DTLS/SCTP'))) {\n // TODO: this is dangerous in the case where a non-rejected m-line\n // becomes rejected.\n pc.transceivers[sdpMLineIndex] = {\n mid: mid,\n kind: kind,\n protocol: protocol,\n rejected: true\n };\n return;\n }\n\n if (!rejected && pc.transceivers[sdpMLineIndex] &&\n pc.transceivers[sdpMLineIndex].rejected) {\n // recycle a rejected transceiver.\n pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);\n }\n\n var transceiver;\n var iceGatherer;\n var iceTransport;\n var dtlsTransport;\n var rtpReceiver;\n var sendEncodingParameters;\n var recvEncodingParameters;\n var localCapabilities;\n\n var track;\n // FIXME: ensure the mediaSection has rtcp-mux set.\n var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n var remoteIceParameters;\n var remoteDtlsParameters;\n if (!rejected) {\n remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n sessionpart);\n remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n sessionpart);\n remoteDtlsParameters.role = 'client';\n }\n recvEncodingParameters =\n SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);\n\n var isComplete = SDPUtils.matchPrefix(mediaSection,\n 'a=end-of-candidates', sessionpart).length > 0;\n var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n .map(function(cand) {\n return SDPUtils.parseCandidate(cand);\n })\n .filter(function(cand) {\n return cand.component === 1;\n });\n\n // Check if we can use BUNDLE and dispose transports.\n if ((description.type === 'offer' || description.type === 'answer') &&\n !rejected && usingBundle && sdpMLineIndex > 0 &&\n pc.transceivers[sdpMLineIndex]) {\n pc._disposeIceAndDtlsTransports(sdpMLineIndex);\n pc.transceivers[sdpMLineIndex].iceGatherer =\n pc.transceivers[0].iceGatherer;\n pc.transceivers[sdpMLineIndex].iceTransport =\n pc.transceivers[0].iceTransport;\n pc.transceivers[sdpMLineIndex].dtlsTransport =\n pc.transceivers[0].dtlsTransport;\n if (pc.transceivers[sdpMLineIndex].rtpSender) {\n pc.transceivers[sdpMLineIndex].rtpSender.setTransport(\n pc.transceivers[0].dtlsTransport);\n }\n if (pc.transceivers[sdpMLineIndex].rtpReceiver) {\n pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(\n pc.transceivers[0].dtlsTransport);\n }\n }\n if (description.type === 'offer' && !rejected) {\n transceiver = pc.transceivers[sdpMLineIndex] ||\n pc._createTransceiver(kind);\n transceiver.mid = mid;\n\n if (!transceiver.iceGatherer) {\n transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,\n usingBundle);\n }\n\n if (cands.length && transceiver.iceTransport.state === 'new') {\n if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {\n transceiver.iceTransport.setRemoteCandidates(cands);\n } else {\n cands.forEach(function(candidate) {\n maybeAddCandidate(transceiver.iceTransport, candidate);\n });\n }\n }\n\n localCapabilities = window.RTCRtpReceiver.getCapabilities(kind);\n\n // filter RTX until additional stuff needed for RTX is implemented\n // in adapter.js\n if (edgeVersion < 15019) {\n localCapabilities.codecs = localCapabilities.codecs.filter(\n function(codec) {\n return codec.name !== 'rtx';\n });\n }\n\n sendEncodingParameters = transceiver.sendEncodingParameters || [{\n ssrc: (2 * sdpMLineIndex + 2) * 1001\n }];\n\n // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams\n var isNewTrack = false;\n if (direction === 'sendrecv' || direction === 'sendonly') {\n isNewTrack = !transceiver.rtpReceiver;\n rtpReceiver = transceiver.rtpReceiver ||\n new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);\n\n if (isNewTrack) {\n var stream;\n track = rtpReceiver.track;\n // FIXME: does not work with Plan B.\n if (remoteMsid && remoteMsid.stream === '-') {\n // no-op. a stream id of '-' means: no associated stream.\n } else if (remoteMsid) {\n if (!streams[remoteMsid.stream]) {\n streams[remoteMsid.stream] = new window.MediaStream();\n Object.defineProperty(streams[remoteMsid.stream], 'id', {\n get: function() {\n return remoteMsid.stream;\n }\n });\n }\n Object.defineProperty(track, 'id', {\n get: function() {\n return remoteMsid.track;\n }\n });\n stream = streams[remoteMsid.stream];\n } else {\n if (!streams.default) {\n streams.default = new window.MediaStream();\n }\n stream = streams.default;\n }\n if (stream) {\n addTrackToStreamAndFireEvent(track, stream);\n transceiver.associatedRemoteMediaStreams.push(stream);\n }\n receiverList.push([track, rtpReceiver, stream]);\n }\n } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {\n transceiver.associatedRemoteMediaStreams.forEach(function(s) {\n var nativeTrack = s.getTracks().find(function(t) {\n return t.id === transceiver.rtpReceiver.track.id;\n });\n if (nativeTrack) {\n removeTrackFromStreamAndFireEvent(nativeTrack, s);\n }\n });\n transceiver.associatedRemoteMediaStreams = [];\n }\n\n transceiver.localCapabilities = localCapabilities;\n transceiver.remoteCapabilities = remoteCapabilities;\n transceiver.rtpReceiver = rtpReceiver;\n transceiver.rtcpParameters = rtcpParameters;\n transceiver.sendEncodingParameters = sendEncodingParameters;\n transceiver.recvEncodingParameters = recvEncodingParameters;\n\n // Start the RTCRtpReceiver now. The RTPSender is started in\n // setLocalDescription.\n pc._transceive(pc.transceivers[sdpMLineIndex],\n false,\n isNewTrack);\n } else if (description.type === 'answer' && !rejected) {\n transceiver = pc.transceivers[sdpMLineIndex];\n iceGatherer = transceiver.iceGatherer;\n iceTransport = transceiver.iceTransport;\n dtlsTransport = transceiver.dtlsTransport;\n rtpReceiver = transceiver.rtpReceiver;\n sendEncodingParameters = transceiver.sendEncodingParameters;\n localCapabilities = transceiver.localCapabilities;\n\n pc.transceivers[sdpMLineIndex].recvEncodingParameters =\n recvEncodingParameters;\n pc.transceivers[sdpMLineIndex].remoteCapabilities =\n remoteCapabilities;\n pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;\n\n if (cands.length && iceTransport.state === 'new') {\n if ((isIceLite || isComplete) &&\n (!usingBundle || sdpMLineIndex === 0)) {\n iceTransport.setRemoteCandidates(cands);\n } else {\n cands.forEach(function(candidate) {\n maybeAddCandidate(transceiver.iceTransport, candidate);\n });\n }\n }\n\n if (!usingBundle || sdpMLineIndex === 0) {\n if (iceTransport.state === 'new') {\n iceTransport.start(iceGatherer, remoteIceParameters,\n 'controlling');\n }\n if (dtlsTransport.state === 'new') {\n dtlsTransport.start(remoteDtlsParameters);\n }\n }\n\n // If the offer contained RTX but the answer did not,\n // remove RTX from sendEncodingParameters.\n var commonCapabilities = getCommonCapabilities(\n transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n\n var hasRtx = commonCapabilities.codecs.filter(function(c) {\n return c.name.toLowerCase() === 'rtx';\n }).length;\n if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {\n delete transceiver.sendEncodingParameters[0].rtx;\n }\n\n pc._transceive(transceiver,\n direction === 'sendrecv' || direction === 'recvonly',\n direction === 'sendrecv' || direction === 'sendonly');\n\n // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams\n if (rtpReceiver &&\n (direction === 'sendrecv' || direction === 'sendonly')) {\n track = rtpReceiver.track;\n if (remoteMsid) {\n if (!streams[remoteMsid.stream]) {\n streams[remoteMsid.stream] = new window.MediaStream();\n }\n addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);\n receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);\n } else {\n if (!streams.default) {\n streams.default = new window.MediaStream();\n }\n addTrackToStreamAndFireEvent(track, streams.default);\n receiverList.push([track, rtpReceiver, streams.default]);\n }\n } else {\n // FIXME: actually the receiver should be created later.\n delete transceiver.rtpReceiver;\n }\n }\n });\n\n if (pc._dtlsRole === undefined) {\n pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';\n }\n\n pc._remoteDescription = {\n type: description.type,\n sdp: description.sdp\n };\n if (description.type === 'offer') {\n pc._updateSignalingState('have-remote-offer');\n } else {\n pc._updateSignalingState('stable');\n }\n Object.keys(streams).forEach(function(sid) {\n var stream = streams[sid];\n if (stream.getTracks().length) {\n if (pc.remoteStreams.indexOf(stream) === -1) {\n pc.remoteStreams.push(stream);\n var event = new Event('addstream');\n event.stream = stream;\n window.setTimeout(function() {\n pc._dispatchEvent('addstream', event);\n });\n }\n\n receiverList.forEach(function(item) {\n var track = item[0];\n var receiver = item[1];\n if (stream.id !== item[2].id) {\n return;\n }\n fireAddTrack(pc, track, receiver, [stream]);\n });\n }\n });\n receiverList.forEach(function(item) {\n if (item[2]) {\n return;\n }\n fireAddTrack(pc, item[0], item[1], []);\n });\n\n // check whether addIceCandidate({}) was called within four seconds after\n // setRemoteDescription.\n window.setTimeout(function() {\n if (!(pc && pc.transceivers)) {\n return;\n }\n pc.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport &&\n transceiver.iceTransport.state === 'new' &&\n transceiver.iceTransport.getRemoteCandidates().length > 0) {\n console.warn('Timeout for addRemoteCandidate. Consider sending ' +\n 'an end-of-candidates notification');\n transceiver.iceTransport.addRemoteCandidate({});\n }\n });\n }, 4000);\n\n return Promise.resolve();\n };\n\n RTCPeerConnection.prototype.close = function() {\n this.transceivers.forEach(function(transceiver) {\n /* not yet\n if (transceiver.iceGatherer) {\n transceiver.iceGatherer.close();\n }\n */\n if (transceiver.iceTransport) {\n transceiver.iceTransport.stop();\n }\n if (transceiver.dtlsTransport) {\n transceiver.dtlsTransport.stop();\n }\n if (transceiver.rtpSender) {\n transceiver.rtpSender.stop();\n }\n if (transceiver.rtpReceiver) {\n transceiver.rtpReceiver.stop();\n }\n });\n // FIXME: clean up tracks, local streams, remote streams, etc\n this._isClosed = true;\n this._updateSignalingState('closed');\n };\n\n // Update the signaling state.\n RTCPeerConnection.prototype._updateSignalingState = function(newState) {\n this.signalingState = newState;\n var event = new Event('signalingstatechange');\n this._dispatchEvent('signalingstatechange', event);\n };\n\n // Determine whether to fire the negotiationneeded event.\n RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() {\n var pc = this;\n if (this.signalingState !== 'stable' || this.needNegotiation === true) {\n return;\n }\n this.needNegotiation = true;\n window.setTimeout(function() {\n if (pc.needNegotiation) {\n pc.needNegotiation = false;\n var event = new Event('negotiationneeded');\n pc._dispatchEvent('negotiationneeded', event);\n }\n }, 0);\n };\n\n // Update the ice connection state.\n RTCPeerConnection.prototype._updateIceConnectionState = function() {\n var newState;\n var states = {\n 'new': 0,\n closed: 0,\n checking: 0,\n connected: 0,\n completed: 0,\n disconnected: 0,\n failed: 0\n };\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport && !transceiver.rejected) {\n states[transceiver.iceTransport.state]++;\n }\n });\n\n newState = 'new';\n if (states.failed > 0) {\n newState = 'failed';\n } else if (states.checking > 0) {\n newState = 'checking';\n } else if (states.disconnected > 0) {\n newState = 'disconnected';\n } else if (states.new > 0) {\n newState = 'new';\n } else if (states.connected > 0) {\n newState = 'connected';\n } else if (states.completed > 0) {\n newState = 'completed';\n }\n\n if (newState !== this.iceConnectionState) {\n this.iceConnectionState = newState;\n var event = new Event('iceconnectionstatechange');\n this._dispatchEvent('iceconnectionstatechange', event);\n }\n };\n\n // Update the connection state.\n RTCPeerConnection.prototype._updateConnectionState = function() {\n var newState;\n var states = {\n 'new': 0,\n closed: 0,\n connecting: 0,\n connected: 0,\n completed: 0,\n disconnected: 0,\n failed: 0\n };\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport && transceiver.dtlsTransport &&\n !transceiver.rejected) {\n states[transceiver.iceTransport.state]++;\n states[transceiver.dtlsTransport.state]++;\n }\n });\n // ICETransport.completed and connected are the same for this purpose.\n states.connected += states.completed;\n\n newState = 'new';\n if (states.failed > 0) {\n newState = 'failed';\n } else if (states.connecting > 0) {\n newState = 'connecting';\n } else if (states.disconnected > 0) {\n newState = 'disconnected';\n } else if (states.new > 0) {\n newState = 'new';\n } else if (states.connected > 0) {\n newState = 'connected';\n }\n\n if (newState !== this.connectionState) {\n this.connectionState = newState;\n var event = new Event('connectionstatechange');\n this._dispatchEvent('connectionstatechange', event);\n }\n };\n\n RTCPeerConnection.prototype.createOffer = function() {\n var pc = this;\n\n if (pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createOffer after close'));\n }\n\n var numAudioTracks = pc.transceivers.filter(function(t) {\n return t.kind === 'audio';\n }).length;\n var numVideoTracks = pc.transceivers.filter(function(t) {\n return t.kind === 'video';\n }).length;\n\n // Determine number of audio and video tracks we need to send/recv.\n var offerOptions = arguments[0];\n if (offerOptions) {\n // Reject Chrome legacy constraints.\n if (offerOptions.mandatory || offerOptions.optional) {\n throw new TypeError(\n 'Legacy mandatory/optional constraints not supported.');\n }\n if (offerOptions.offerToReceiveAudio !== undefined) {\n if (offerOptions.offerToReceiveAudio === true) {\n numAudioTracks = 1;\n } else if (offerOptions.offerToReceiveAudio === false) {\n numAudioTracks = 0;\n } else {\n numAudioTracks = offerOptions.offerToReceiveAudio;\n }\n }\n if (offerOptions.offerToReceiveVideo !== undefined) {\n if (offerOptions.offerToReceiveVideo === true) {\n numVideoTracks = 1;\n } else if (offerOptions.offerToReceiveVideo === false) {\n numVideoTracks = 0;\n } else {\n numVideoTracks = offerOptions.offerToReceiveVideo;\n }\n }\n }\n\n pc.transceivers.forEach(function(transceiver) {\n if (transceiver.kind === 'audio') {\n numAudioTracks--;\n if (numAudioTracks < 0) {\n transceiver.wantReceive = false;\n }\n } else if (transceiver.kind === 'video') {\n numVideoTracks--;\n if (numVideoTracks < 0) {\n transceiver.wantReceive = false;\n }\n }\n });\n\n // Create M-lines for recvonly streams.\n while (numAudioTracks > 0 || numVideoTracks > 0) {\n if (numAudioTracks > 0) {\n pc._createTransceiver('audio');\n numAudioTracks--;\n }\n if (numVideoTracks > 0) {\n pc._createTransceiver('video');\n numVideoTracks--;\n }\n }\n\n var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,\n pc._sdpSessionVersion++);\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n // For each track, create an ice gatherer, ice transport,\n // dtls transport, potentially rtpsender and rtpreceiver.\n var track = transceiver.track;\n var kind = transceiver.kind;\n var mid = transceiver.mid || SDPUtils.generateIdentifier();\n transceiver.mid = mid;\n\n if (!transceiver.iceGatherer) {\n transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,\n pc.usingBundle);\n }\n\n var localCapabilities = window.RTCRtpSender.getCapabilities(kind);\n // filter RTX until additional stuff needed for RTX is implemented\n // in adapter.js\n if (edgeVersion < 15019) {\n localCapabilities.codecs = localCapabilities.codecs.filter(\n function(codec) {\n return codec.name !== 'rtx';\n });\n }\n localCapabilities.codecs.forEach(function(codec) {\n // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n // by adding level-asymmetry-allowed=1\n if (codec.name === 'H264' &&\n codec.parameters['level-asymmetry-allowed'] === undefined) {\n codec.parameters['level-asymmetry-allowed'] = '1';\n }\n\n // for subsequent offers, we might have to re-use the payload\n // type of the last offer.\n if (transceiver.remoteCapabilities &&\n transceiver.remoteCapabilities.codecs) {\n transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) {\n if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() &&\n codec.clockRate === remoteCodec.clockRate) {\n codec.preferredPayloadType = remoteCodec.payloadType;\n }\n });\n }\n });\n localCapabilities.headerExtensions.forEach(function(hdrExt) {\n var remoteExtensions = transceiver.remoteCapabilities &&\n transceiver.remoteCapabilities.headerExtensions || [];\n remoteExtensions.forEach(function(rHdrExt) {\n if (hdrExt.uri === rHdrExt.uri) {\n hdrExt.id = rHdrExt.id;\n }\n });\n });\n\n // generate an ssrc now, to be used later in rtpSender.send\n var sendEncodingParameters = transceiver.sendEncodingParameters || [{\n ssrc: (2 * sdpMLineIndex + 1) * 1001\n }];\n if (track) {\n // add RTX\n if (edgeVersion >= 15019 && kind === 'video' &&\n !sendEncodingParameters[0].rtx) {\n sendEncodingParameters[0].rtx = {\n ssrc: sendEncodingParameters[0].ssrc + 1\n };\n }\n }\n\n if (transceiver.wantReceive) {\n transceiver.rtpReceiver = new window.RTCRtpReceiver(\n transceiver.dtlsTransport, kind);\n }\n\n transceiver.localCapabilities = localCapabilities;\n transceiver.sendEncodingParameters = sendEncodingParameters;\n });\n\n // always offer BUNDLE and dispose on return if not supported.\n if (pc._config.bundlePolicy !== 'max-compat') {\n sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {\n return t.mid;\n }).join(' ') + '\\r\\n';\n }\n sdp += 'a=ice-options:trickle\\r\\n';\n\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n sdp += writeMediaSection(transceiver, transceiver.localCapabilities,\n 'offer', transceiver.stream, pc._dtlsRole);\n sdp += 'a=rtcp-rsize\\r\\n';\n\n if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' &&\n (sdpMLineIndex === 0 || !pc.usingBundle)) {\n transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) {\n cand.component = 1;\n sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\\r\\n';\n });\n\n if (transceiver.iceGatherer.state === 'completed') {\n sdp += 'a=end-of-candidates\\r\\n';\n }\n }\n });\n\n var desc = new window.RTCSessionDescription({\n type: 'offer',\n sdp: sdp\n });\n return Promise.resolve(desc);\n };\n\n RTCPeerConnection.prototype.createAnswer = function() {\n var pc = this;\n\n if (pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createAnswer after close'));\n }\n\n if (!(pc.signalingState === 'have-remote-offer' ||\n pc.signalingState === 'have-local-pranswer')) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createAnswer in signalingState ' + pc.signalingState));\n }\n\n var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,\n pc._sdpSessionVersion++);\n if (pc.usingBundle) {\n sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {\n return t.mid;\n }).join(' ') + '\\r\\n';\n }\n sdp += 'a=ice-options:trickle\\r\\n';\n\n var mediaSectionsInOffer = SDPUtils.getMediaSections(\n pc._remoteDescription.sdp).length;\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n if (sdpMLineIndex + 1 > mediaSectionsInOffer) {\n return;\n }\n if (transceiver.rejected) {\n if (transceiver.kind === 'application') {\n if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt\n sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n';\n } else {\n sdp += 'm=application 0 ' + transceiver.protocol +\n ' webrtc-datachannel\\r\\n';\n }\n } else if (transceiver.kind === 'audio') {\n sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\\r\\n' +\n 'a=rtpmap:0 PCMU/8000\\r\\n';\n } else if (transceiver.kind === 'video') {\n sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\\r\\n' +\n 'a=rtpmap:120 VP8/90000\\r\\n';\n }\n sdp += 'c=IN IP4 0.0.0.0\\r\\n' +\n 'a=inactive\\r\\n' +\n 'a=mid:' + transceiver.mid + '\\r\\n';\n return;\n }\n\n // FIXME: look at direction.\n if (transceiver.stream) {\n var localTrack;\n if (transceiver.kind === 'audio') {\n localTrack = transceiver.stream.getAudioTracks()[0];\n } else if (transceiver.kind === 'video') {\n localTrack = transceiver.stream.getVideoTracks()[0];\n }\n if (localTrack) {\n // add RTX\n if (edgeVersion >= 15019 && transceiver.kind === 'video' &&\n !transceiver.sendEncodingParameters[0].rtx) {\n transceiver.sendEncodingParameters[0].rtx = {\n ssrc: transceiver.sendEncodingParameters[0].ssrc + 1\n };\n }\n }\n }\n\n // Calculate intersection of capabilities.\n var commonCapabilities = getCommonCapabilities(\n transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n\n var hasRtx = commonCapabilities.codecs.filter(function(c) {\n return c.name.toLowerCase() === 'rtx';\n }).length;\n if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {\n delete transceiver.sendEncodingParameters[0].rtx;\n }\n\n sdp += writeMediaSection(transceiver, commonCapabilities,\n 'answer', transceiver.stream, pc._dtlsRole);\n if (transceiver.rtcpParameters &&\n transceiver.rtcpParameters.reducedSize) {\n sdp += 'a=rtcp-rsize\\r\\n';\n }\n });\n\n var desc = new window.RTCSessionDescription({\n type: 'answer',\n sdp: sdp\n });\n return Promise.resolve(desc);\n };\n\n RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n var pc = this;\n var sections;\n if (candidate && !(candidate.sdpMLineIndex !== undefined ||\n candidate.sdpMid)) {\n return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));\n }\n\n // TODO: needs to go into ops queue.\n return new Promise(function(resolve, reject) {\n if (!pc._remoteDescription) {\n return reject(makeError('InvalidStateError',\n 'Can not add ICE candidate without a remote description'));\n } else if (!candidate || candidate.candidate === '') {\n for (var j = 0; j < pc.transceivers.length; j++) {\n if (pc.transceivers[j].rejected) {\n continue;\n }\n pc.transceivers[j].iceTransport.addRemoteCandidate({});\n sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);\n sections[j] += 'a=end-of-candidates\\r\\n';\n pc._remoteDescription.sdp =\n SDPUtils.getDescription(pc._remoteDescription.sdp) +\n sections.join('');\n if (pc.usingBundle) {\n break;\n }\n }\n } else {\n var sdpMLineIndex = candidate.sdpMLineIndex;\n if (candidate.sdpMid) {\n for (var i = 0; i < pc.transceivers.length; i++) {\n if (pc.transceivers[i].mid === candidate.sdpMid) {\n sdpMLineIndex = i;\n break;\n }\n }\n }\n var transceiver = pc.transceivers[sdpMLineIndex];\n if (transceiver) {\n if (transceiver.rejected) {\n return resolve();\n }\n var cand = Object.keys(candidate.candidate).length > 0 ?\n SDPUtils.parseCandidate(candidate.candidate) : {};\n // Ignore Chrome's invalid candidates since Edge does not like them.\n if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n return resolve();\n }\n // Ignore RTCP candidates, we assume RTCP-MUX.\n if (cand.component && cand.component !== 1) {\n return resolve();\n }\n // when using bundle, avoid adding candidates to the wrong\n // ice transport. And avoid adding candidates added in the SDP.\n if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 &&\n transceiver.iceTransport !== pc.transceivers[0].iceTransport)) {\n if (!maybeAddCandidate(transceiver.iceTransport, cand)) {\n return reject(makeError('OperationError',\n 'Can not add ICE candidate'));\n }\n }\n\n // update the remoteDescription.\n var candidateString = candidate.candidate.trim();\n if (candidateString.indexOf('a=') === 0) {\n candidateString = candidateString.substr(2);\n }\n sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);\n sections[sdpMLineIndex] += 'a=' +\n (cand.type ? candidateString : 'end-of-candidates')\n + '\\r\\n';\n pc._remoteDescription.sdp =\n SDPUtils.getDescription(pc._remoteDescription.sdp) +\n sections.join('');\n } else {\n return reject(makeError('OperationError',\n 'Can not add ICE candidate'));\n }\n }\n resolve();\n });\n };\n\n RTCPeerConnection.prototype.getStats = function(selector) {\n if (selector && selector instanceof window.MediaStreamTrack) {\n var senderOrReceiver = null;\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.rtpSender &&\n transceiver.rtpSender.track === selector) {\n senderOrReceiver = transceiver.rtpSender;\n } else if (transceiver.rtpReceiver &&\n transceiver.rtpReceiver.track === selector) {\n senderOrReceiver = transceiver.rtpReceiver;\n }\n });\n if (!senderOrReceiver) {\n throw makeError('InvalidAccessError', 'Invalid selector.');\n }\n return senderOrReceiver.getStats();\n }\n\n var promises = [];\n this.transceivers.forEach(function(transceiver) {\n ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n 'dtlsTransport'].forEach(function(method) {\n if (transceiver[method]) {\n promises.push(transceiver[method].getStats());\n }\n });\n });\n return Promise.all(promises).then(function(allStats) {\n var results = new Map();\n allStats.forEach(function(stats) {\n stats.forEach(function(stat) {\n results.set(stat.id, stat);\n });\n });\n return results;\n });\n };\n\n // fix low-level stat names and return Map instead of object.\n var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer',\n 'RTCIceTransport', 'RTCDtlsTransport'];\n ortcObjects.forEach(function(ortcObjectName) {\n var obj = window[ortcObjectName];\n if (obj && obj.prototype && obj.prototype.getStats) {\n var nativeGetstats = obj.prototype.getStats;\n obj.prototype.getStats = function() {\n return nativeGetstats.apply(this)\n .then(function(nativeStats) {\n var mapStats = new Map();\n Object.keys(nativeStats).forEach(function(id) {\n nativeStats[id].type = fixStatsType(nativeStats[id]);\n mapStats.set(id, nativeStats[id]);\n });\n return mapStats;\n });\n };\n }\n });\n\n // legacy callback shims. Should be moved to adapter.js some days.\n var methods = ['createOffer', 'createAnswer'];\n methods.forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[0] === 'function' ||\n typeof args[1] === 'function') { // legacy\n return nativeMethod.apply(this, [arguments[2]])\n .then(function(description) {\n if (typeof args[0] === 'function') {\n args[0].apply(null, [description]);\n }\n }, function(error) {\n if (typeof args[1] === 'function') {\n args[1].apply(null, [error]);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];\n methods.forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[1] === 'function' ||\n typeof args[2] === 'function') { // legacy\n return nativeMethod.apply(this, arguments)\n .then(function() {\n if (typeof args[1] === 'function') {\n args[1].apply(null);\n }\n }, function(error) {\n if (typeof args[2] === 'function') {\n args[2].apply(null, [error]);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n // getStats is special. It doesn't have a spec legacy method yet we support\n // getStats(something, cb) without error callbacks.\n ['getStats'].forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[1] === 'function') {\n return nativeMethod.apply(this, arguments)\n .then(function() {\n if (typeof args[1] === 'function') {\n args[1].apply(null);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n return RTCPeerConnection;\n};\n\n},{\"sdp\":17}],17:[function(require,module,exports){\n/* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n return blob.trim().split('\\n').map(function(line) {\n return line.trim();\n });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n var parts = blob.split('\\nm=');\n return parts.map(function(part, index) {\n return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n });\n};\n\n// returns the session description.\nSDPUtils.getDescription = function(blob) {\n var sections = SDPUtils.splitSections(blob);\n return sections && sections[0];\n};\n\n// returns the individual media sections.\nSDPUtils.getMediaSections = function(blob) {\n var sections = SDPUtils.splitSections(blob);\n sections.shift();\n return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n return SDPUtils.splitLines(blob).filter(function(line) {\n return line.indexOf(prefix) === 0;\n });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n var parts;\n // Parse both variants.\n if (line.indexOf('a=candidate:') === 0) {\n parts = line.substring(12).split(' ');\n } else {\n parts = line.substring(10).split(' ');\n }\n\n var candidate = {\n foundation: parts[0],\n component: parseInt(parts[1], 10),\n protocol: parts[2].toLowerCase(),\n priority: parseInt(parts[3], 10),\n ip: parts[4],\n address: parts[4], // address is an alias for ip.\n port: parseInt(parts[5], 10),\n // skip parts[6] == 'typ'\n type: parts[7]\n };\n\n for (var i = 8; i < parts.length; i += 2) {\n switch (parts[i]) {\n case 'raddr':\n candidate.relatedAddress = parts[i + 1];\n break;\n case 'rport':\n candidate.relatedPort = parseInt(parts[i + 1], 10);\n break;\n case 'tcptype':\n candidate.tcpType = parts[i + 1];\n break;\n case 'ufrag':\n candidate.ufrag = parts[i + 1]; // for backward compability.\n candidate.usernameFragment = parts[i + 1];\n break;\n default: // extension handling, in particular ufrag\n candidate[parts[i]] = parts[i + 1];\n break;\n }\n }\n return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n var sdp = [];\n sdp.push(candidate.foundation);\n sdp.push(candidate.component);\n sdp.push(candidate.protocol.toUpperCase());\n sdp.push(candidate.priority);\n sdp.push(candidate.address || candidate.ip);\n sdp.push(candidate.port);\n\n var type = candidate.type;\n sdp.push('typ');\n sdp.push(type);\n if (type !== 'host' && candidate.relatedAddress &&\n candidate.relatedPort) {\n sdp.push('raddr');\n sdp.push(candidate.relatedAddress);\n sdp.push('rport');\n sdp.push(candidate.relatedPort);\n }\n if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n sdp.push('tcptype');\n sdp.push(candidate.tcpType);\n }\n if (candidate.usernameFragment || candidate.ufrag) {\n sdp.push('ufrag');\n sdp.push(candidate.usernameFragment || candidate.ufrag);\n }\n return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n return line.substr(14).split(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n var parts = line.substr(9).split(' ');\n var parsed = {\n payloadType: parseInt(parts.shift(), 10) // was: id\n };\n\n parts = parts[0].split('/');\n\n parsed.name = parts[0];\n parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n // legacy alias, got renamed back to channels in ORTC.\n parsed.numChannels = parsed.channels;\n return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n var channels = codec.channels || codec.numChannels || 1;\n return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n var parts = line.substr(9).split(' ');\n return {\n id: parseInt(parts[0], 10),\n direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n uri: parts[1]\n };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n ? '/' + headerExtension.direction\n : '') +\n ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n var parsed = {};\n var kv;\n var parts = line.substr(line.indexOf(' ') + 1).split(';');\n for (var j = 0; j < parts.length; j++) {\n kv = parts[j].trim().split('=');\n parsed[kv[0].trim()] = kv[1];\n }\n return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n var line = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.parameters && Object.keys(codec.parameters).length) {\n var params = [];\n Object.keys(codec.parameters).forEach(function(param) {\n if (codec.parameters[param]) {\n params.push(param + '=' + codec.parameters[param]);\n } else {\n params.push(param);\n }\n });\n line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n }\n return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n return {\n type: parts.shift(),\n parameter: parts.join(' ')\n };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n var lines = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n // FIXME: special handling for trr-int?\n codec.rtcpFeedback.forEach(function(fb) {\n lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n '\\r\\n';\n });\n }\n return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n var sp = line.indexOf(' ');\n var parts = {\n ssrc: parseInt(line.substr(7, sp - 7), 10)\n };\n var colon = line.indexOf(':', sp);\n if (colon > -1) {\n parts.attribute = line.substr(sp + 1, colon - sp - 1);\n parts.value = line.substr(colon + 1);\n } else {\n parts.attribute = line.substr(sp + 1);\n }\n return parts;\n};\n\nSDPUtils.parseSsrcGroup = function(line) {\n var parts = line.substr(13).split(' ');\n return {\n semantics: parts.shift(),\n ssrcs: parts.map(function(ssrc) {\n return parseInt(ssrc, 10);\n })\n };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n if (mid) {\n return mid.substr(6);\n }\n};\n\nSDPUtils.parseFingerprint = function(line) {\n var parts = line.substr(14).split(' ');\n return {\n algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n value: parts[1]\n };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=fingerprint:');\n // Note: a=setup line is ignored since we use the 'auto' role.\n // Note2: 'algorithm' is not case sensitive except in Edge.\n return {\n role: 'auto',\n fingerprints: lines.map(SDPUtils.parseFingerprint)\n };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n var sdp = 'a=setup:' + setupType + '\\r\\n';\n params.fingerprints.forEach(function(fp) {\n sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n });\n return sdp;\n};\n\n// Parses a=crypto lines into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function(line) {\n var parts = line.substr(9).split(' ');\n return {\n tag: parseInt(parts[0], 10),\n cryptoSuite: parts[1],\n keyParams: parts[2],\n sessionParams: parts.slice(3),\n };\n};\n\nSDPUtils.writeCryptoLine = function(parameters) {\n return 'a=crypto:' + parameters.tag + ' ' +\n parameters.cryptoSuite + ' ' +\n (typeof parameters.keyParams === 'object'\n ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)\n : parameters.keyParams) +\n (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +\n '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function(keyParams) {\n if (keyParams.indexOf('inline:') !== 0) {\n return null;\n }\n var parts = keyParams.substr(7).split('|');\n return {\n keyMethod: 'inline',\n keySalt: parts[0],\n lifeTime: parts[1],\n mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,\n };\n};\n\nSDPUtils.writeCryptoKeyParams = function(keyParams) {\n return keyParams.keyMethod + ':'\n + keyParams.keySalt +\n (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +\n (keyParams.mkiValue && keyParams.mkiLength\n ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength\n : '');\n};\n\n// Extracts all SDES paramters.\nSDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=crypto:');\n return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-ufrag:')[0];\n var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-pwd:')[0];\n if (!(ufrag && pwd)) {\n return null;\n }\n return {\n usernameFragment: ufrag.substr(12),\n password: pwd.substr(10),\n };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n 'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n var description = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: [],\n rtcp: []\n };\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n var pt = mline[i];\n var rtpmapline = SDPUtils.matchPrefix(\n mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n if (rtpmapline) {\n var codec = SDPUtils.parseRtpMap(rtpmapline);\n var fmtps = SDPUtils.matchPrefix(\n mediaSection, 'a=fmtp:' + pt + ' ');\n // Only the first a=fmtp: is considered.\n codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n codec.rtcpFeedback = SDPUtils.matchPrefix(\n mediaSection, 'a=rtcp-fb:' + pt + ' ')\n .map(SDPUtils.parseRtcpFb);\n description.codecs.push(codec);\n // parse FEC mechanisms from rtpmap lines.\n switch (codec.name.toUpperCase()) {\n case 'RED':\n case 'ULPFEC':\n description.fecMechanisms.push(codec.name.toUpperCase());\n break;\n default: // only RED and ULPFEC are recognized as FEC mechanisms.\n break;\n }\n }\n }\n SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n description.headerExtensions.push(SDPUtils.parseExtmap(line));\n });\n // FIXME: parse rtcp.\n return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n var sdp = '';\n\n // Build the mline.\n sdp += 'm=' + kind + ' ';\n sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n sdp += ' UDP/TLS/RTP/SAVPF ';\n sdp += caps.codecs.map(function(codec) {\n if (codec.preferredPayloadType !== undefined) {\n return codec.preferredPayloadType;\n }\n return codec.payloadType;\n }).join(' ') + '\\r\\n';\n\n sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n caps.codecs.forEach(function(codec) {\n sdp += SDPUtils.writeRtpMap(codec);\n sdp += SDPUtils.writeFmtp(codec);\n sdp += SDPUtils.writeRtcpFb(codec);\n });\n var maxptime = 0;\n caps.codecs.forEach(function(codec) {\n if (codec.maxptime > maxptime) {\n maxptime = codec.maxptime;\n }\n });\n if (maxptime > 0) {\n sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n }\n sdp += 'a=rtcp-mux\\r\\n';\n\n if (caps.headerExtensions) {\n caps.headerExtensions.forEach(function(extension) {\n sdp += SDPUtils.writeExtmap(extension);\n });\n }\n // FIXME: write fecMechanisms.\n return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n var encodingParameters = [];\n var description = SDPUtils.parseRtpParameters(mediaSection);\n var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n // filter a=ssrc:... cname:, ignore PlanB-msid\n var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(parts) {\n return parts.attribute === 'cname';\n });\n var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n var secondarySsrc;\n\n var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n .map(function(line) {\n var parts = line.substr(17).split(' ');\n return parts.map(function(part) {\n return parseInt(part, 10);\n });\n });\n if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n secondarySsrc = flows[0][1];\n }\n\n description.codecs.forEach(function(codec) {\n if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n var encParam = {\n ssrc: primarySsrc,\n codecPayloadType: parseInt(codec.parameters.apt, 10)\n };\n if (primarySsrc && secondarySsrc) {\n encParam.rtx = {ssrc: secondarySsrc};\n }\n encodingParameters.push(encParam);\n if (hasRed) {\n encParam = JSON.parse(JSON.stringify(encParam));\n encParam.fec = {\n ssrc: primarySsrc,\n mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n };\n encodingParameters.push(encParam);\n }\n }\n });\n if (encodingParameters.length === 0 && primarySsrc) {\n encodingParameters.push({\n ssrc: primarySsrc\n });\n }\n\n // we support both b=AS and b=TIAS but interpret AS as TIAS.\n var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n if (bandwidth.length) {\n if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n bandwidth = parseInt(bandwidth[0].substr(7), 10);\n } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n // use formula from JSEP to convert b=AS to TIAS value.\n bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95\n - (50 * 40 * 8);\n } else {\n bandwidth = undefined;\n }\n encodingParameters.forEach(function(params) {\n params.maxBitrate = bandwidth;\n });\n }\n return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n var rtcpParameters = {};\n\n // Gets the first SSRC. Note tha with RTX there might be multiple\n // SSRCs.\n var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(obj) {\n return obj.attribute === 'cname';\n })[0];\n if (remoteSsrc) {\n rtcpParameters.cname = remoteSsrc.value;\n rtcpParameters.ssrc = remoteSsrc.ssrc;\n }\n\n // Edge uses the compound attribute instead of reducedSize\n // compound is !reducedSize\n var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n rtcpParameters.reducedSize = rsize.length > 0;\n rtcpParameters.compound = rsize.length === 0;\n\n // parses the rtcp-mux attrіbute.\n // Note that Edge does not support unmuxed RTCP.\n var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n rtcpParameters.mux = mux.length > 0;\n\n return rtcpParameters;\n};\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n var parts;\n var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n if (spec.length === 1) {\n parts = spec[0].substr(7).split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(msidParts) {\n return msidParts.attribute === 'msid';\n });\n if (planB.length > 0) {\n parts = planB[0].value.split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function(mediaSection) {\n var mline = SDPUtils.parseMLine(mediaSection);\n var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n var maxMessageSize;\n if (maxSizeLine.length > 0) {\n maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);\n }\n if (isNaN(maxMessageSize)) {\n maxMessageSize = 65536;\n }\n var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n if (sctpPort.length > 0) {\n return {\n port: parseInt(sctpPort[0].substr(12), 10),\n protocol: mline.fmt,\n maxMessageSize: maxMessageSize\n };\n }\n var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n if (sctpMapLines.length > 0) {\n var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0]\n .substr(10)\n .split(' ');\n return {\n port: parseInt(parts[0], 10),\n protocol: parts[1],\n maxMessageSize: maxMessageSize\n };\n }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function(media, sctp) {\n var output = [];\n if (media.protocol !== 'DTLS/SCTP') {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctp-port:' + sctp.port + '\\r\\n'\n ];\n } else {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n'\n ];\n }\n if (sctp.maxMessageSize !== undefined) {\n output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n }\n return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function() {\n return Math.random().toString().substr(2, 21);\n};\n\n// Write boilder plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {\n var sessionId;\n var version = sessVer !== undefined ? sessVer : 2;\n if (sessId) {\n sessionId = sessId;\n } else {\n sessionId = SDPUtils.generateSessionId();\n }\n var user = sessUser || 'thisisadapterortc';\n // FIXME: sess-id should be an NTP timestamp.\n return 'v=0\\r\\n' +\n 'o=' + user + ' ' + sessionId + ' ' + version +\n ' IN IP4 127.0.0.1\\r\\n' +\n 's=-\\r\\n' +\n 't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n // Map ICE parameters (ufrag, pwd) to SDP.\n sdp += SDPUtils.writeIceParameters(\n transceiver.iceGatherer.getLocalParameters());\n\n // Map DTLS parameters to SDP.\n sdp += SDPUtils.writeDtlsParameters(\n transceiver.dtlsTransport.getLocalParameters(),\n type === 'offer' ? 'actpass' : 'active');\n\n sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n if (transceiver.direction) {\n sdp += 'a=' + transceiver.direction + '\\r\\n';\n } else if (transceiver.rtpSender && transceiver.rtpReceiver) {\n sdp += 'a=sendrecv\\r\\n';\n } else if (transceiver.rtpSender) {\n sdp += 'a=sendonly\\r\\n';\n } else if (transceiver.rtpReceiver) {\n sdp += 'a=recvonly\\r\\n';\n } else {\n sdp += 'a=inactive\\r\\n';\n }\n\n if (transceiver.rtpSender) {\n // spec.\n var msid = 'msid:' + stream.id + ' ' +\n transceiver.rtpSender.track.id + '\\r\\n';\n sdp += 'a=' + msid;\n\n // for Chrome.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' ' + msid;\n if (transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' ' + msid;\n sdp += 'a=ssrc-group:FID ' +\n transceiver.sendEncodingParameters[0].ssrc + ' ' +\n transceiver.sendEncodingParameters[0].rtx.ssrc +\n '\\r\\n';\n }\n }\n // FIXME: this should be written by writeRtpDescription.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n }\n return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n var lines = SDPUtils.splitLines(mediaSection);\n for (var i = 0; i < lines.length; i++) {\n switch (lines[i]) {\n case 'a=sendrecv':\n case 'a=sendonly':\n case 'a=recvonly':\n case 'a=inactive':\n return lines[i].substr(2);\n default:\n // FIXME: What should happen here?\n }\n }\n if (sessionpart) {\n return SDPUtils.getDirection(sessionpart);\n }\n return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n return mline[0].substr(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = function(mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var parts = lines[0].substr(2).split(' ');\n return {\n kind: parts[0],\n port: parseInt(parts[1], 10),\n protocol: parts[2],\n fmt: parts.slice(3).join(' ')\n };\n};\n\nSDPUtils.parseOLine = function(mediaSection) {\n var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];\n var parts = line.substr(2).split(' ');\n return {\n username: parts[0],\n sessionId: parts[1],\n sessionVersion: parseInt(parts[2], 10),\n netType: parts[3],\n addressType: parts[4],\n address: parts[5]\n };\n};\n\n// a very naive interpretation of a valid SDP.\nSDPUtils.isValidSDP = function(blob) {\n if (typeof blob !== 'string' || blob.length === 0) {\n return false;\n }\n var lines = SDPUtils.splitLines(blob);\n for (var i = 0; i < lines.length; i++) {\n if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {\n return false;\n }\n // TODO: check the modifier a bit more.\n }\n return true;\n};\n\n// Expose public methods.\nif (typeof module === 'object') {\n module.exports = SDPUtils;\n}\n\n},{}]},{},[1])(1)\n});"],"file":"adapter.min.js"} \ No newline at end of file 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* Description of import/upgrade into Moodle:\n *\n * 1. Visit https://github.com/webrtc/adapter/releases.\n * 2. Check if the version has been updated from what is listed in lib/thirdpartylibs.xml in the Moodle wwwroot.\n * 3. If it has -\n * 1. Download the source code.\n * 2. Copy the content of the file release/adapter.js from the archive (ignore the first line).\n * 3. Replace the content below \"return (function e(t,n,r) ..\" in this file with the content you copied.\n * 4. Ensure to update lib/thirdpartylibs.xml with any changes.\n */\n\n// ESLint directives.\n/* eslint-disable */\n\n// JSHint directives.\n/* jshint ignore:start */\n\ndefine([], function() {\nreturn (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o 0 && arguments[0] !== undefined ? arguments[0] : {},\n window = _ref.window;\n\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n shimChrome: true,\n shimFirefox: true,\n shimSafari: true\n };\n\n // Utils.\n var logging = utils.log;\n var browserDetails = utils.detectBrowser(window);\n\n var adapter = {\n browserDetails: browserDetails,\n commonShim: commonShim,\n extractVersion: utils.extractVersion,\n disableLog: utils.disableLog,\n disableWarnings: utils.disableWarnings,\n // Expose sdp as a convenience. For production apps include directly.\n sdp: sdp\n };\n\n // Shim browser if found.\n switch (browserDetails.browser) {\n case 'chrome':\n if (!chromeShim || !chromeShim.shimPeerConnection || !options.shimChrome) {\n logging('Chrome shim is not included in this adapter release.');\n return adapter;\n }\n if (browserDetails.version === null) {\n logging('Chrome shim can not determine version, not shimming.');\n return adapter;\n }\n logging('adapter.js shimming chrome.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = chromeShim;\n\n // Must be called before shimPeerConnection.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n chromeShim.shimGetUserMedia(window, browserDetails);\n chromeShim.shimMediaStream(window, browserDetails);\n chromeShim.shimPeerConnection(window, browserDetails);\n chromeShim.shimOnTrack(window, browserDetails);\n chromeShim.shimAddTrackRemoveTrack(window, browserDetails);\n chromeShim.shimGetSendersWithDtmf(window, browserDetails);\n chromeShim.shimGetStats(window, browserDetails);\n chromeShim.shimSenderReceiverGetStats(window, browserDetails);\n chromeShim.fixNegotiationNeeded(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimConnectionState(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n commonShim.removeExtmapAllowMixed(window, browserDetails);\n break;\n case 'firefox':\n if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) {\n logging('Firefox shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming firefox.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = firefoxShim;\n\n // Must be called before shimPeerConnection.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n firefoxShim.shimGetUserMedia(window, browserDetails);\n firefoxShim.shimPeerConnection(window, browserDetails);\n firefoxShim.shimOnTrack(window, browserDetails);\n firefoxShim.shimRemoveStream(window, browserDetails);\n firefoxShim.shimSenderGetStats(window, browserDetails);\n firefoxShim.shimReceiverGetStats(window, browserDetails);\n firefoxShim.shimRTCDataChannel(window, browserDetails);\n firefoxShim.shimAddTransceiver(window, browserDetails);\n firefoxShim.shimGetParameters(window, browserDetails);\n firefoxShim.shimCreateOffer(window, browserDetails);\n firefoxShim.shimCreateAnswer(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimConnectionState(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n break;\n case 'safari':\n if (!safariShim || !options.shimSafari) {\n logging('Safari shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming safari.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = safariShim;\n\n // Must be called before shimCallbackAPI.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n safariShim.shimRTCIceServerUrls(window, browserDetails);\n safariShim.shimCreateOfferLegacy(window, browserDetails);\n safariShim.shimCallbacksAPI(window, browserDetails);\n safariShim.shimLocalStreamsAPI(window, browserDetails);\n safariShim.shimRemoteStreamsAPI(window, browserDetails);\n safariShim.shimTrackEventTransceiver(window, browserDetails);\n safariShim.shimGetUserMedia(window, browserDetails);\n safariShim.shimAudioContext(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n commonShim.removeExtmapAllowMixed(window, browserDetails);\n break;\n default:\n logging('Unsupported browser!');\n break;\n }\n\n return adapter;\n}\n\n// Browser shims.\n\n},{\"./chrome/chrome_shim\":3,\"./common_shim\":6,\"./firefox/firefox_shim\":7,\"./safari/safari_shim\":10,\"./utils\":11,\"sdp\":12}],3:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _getusermedia = require('./getusermedia');\n\nObject.defineProperty(exports, 'shimGetUserMedia', {\n enumerable: true,\n get: function get() {\n return _getusermedia.shimGetUserMedia;\n }\n});\n\nvar _getdisplaymedia = require('./getdisplaymedia');\n\nObject.defineProperty(exports, 'shimGetDisplayMedia', {\n enumerable: true,\n get: function get() {\n return _getdisplaymedia.shimGetDisplayMedia;\n }\n});\nexports.shimMediaStream = shimMediaStream;\nexports.shimOnTrack = shimOnTrack;\nexports.shimGetSendersWithDtmf = shimGetSendersWithDtmf;\nexports.shimGetStats = shimGetStats;\nexports.shimSenderReceiverGetStats = shimSenderReceiverGetStats;\nexports.shimAddTrackRemoveTrackWithNative = shimAddTrackRemoveTrackWithNative;\nexports.shimAddTrackRemoveTrack = shimAddTrackRemoveTrack;\nexports.shimPeerConnection = shimPeerConnection;\nexports.fixNegotiationNeeded = fixNegotiationNeeded;\n\nvar _utils = require('../utils.js');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nfunction shimMediaStream(window) {\n window.MediaStream = window.MediaStream || window.webkitMediaStream;\n}\n\nfunction shimOnTrack(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {\n get: function get() {\n return this._ontrack;\n },\n set: function set(f) {\n if (this._ontrack) {\n this.removeEventListener('track', this._ontrack);\n }\n this.addEventListener('track', this._ontrack = f);\n },\n\n enumerable: true,\n configurable: true\n });\n var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {\n var _this = this;\n\n if (!this._ontrackpoly) {\n this._ontrackpoly = function (e) {\n // onaddstream does not fire when a track is added to an existing\n // stream. But stream.onaddtrack is implemented so we use that.\n e.stream.addEventListener('addtrack', function (te) {\n var receiver = void 0;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = _this.getReceivers().find(function (r) {\n return r.track && r.track.id === te.track.id;\n });\n } else {\n receiver = { track: te.track };\n }\n\n var event = new Event('track');\n event.track = te.track;\n event.receiver = receiver;\n event.transceiver = { receiver: receiver };\n event.streams = [e.stream];\n _this.dispatchEvent(event);\n });\n e.stream.getTracks().forEach(function (track) {\n var receiver = void 0;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = _this.getReceivers().find(function (r) {\n return r.track && r.track.id === track.id;\n });\n } else {\n receiver = { track: track };\n }\n var event = new Event('track');\n event.track = track;\n event.receiver = receiver;\n event.transceiver = { receiver: receiver };\n event.streams = [e.stream];\n _this.dispatchEvent(event);\n });\n };\n this.addEventListener('addstream', this._ontrackpoly);\n }\n return origSetRemoteDescription.apply(this, arguments);\n };\n } else {\n // even if RTCRtpTransceiver is in window, it is only used and\n // emitted in unified-plan. Unfortunately this means we need\n // to unconditionally wrap the event.\n utils.wrapPeerConnectionEvent(window, 'track', function (e) {\n if (!e.transceiver) {\n Object.defineProperty(e, 'transceiver', { value: { receiver: e.receiver } });\n }\n return e;\n });\n }\n}\n\nfunction shimGetSendersWithDtmf(window) {\n // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) {\n var shimSenderWithDtmf = function shimSenderWithDtmf(pc, track) {\n return {\n track: track,\n get dtmf() {\n if (this._dtmf === undefined) {\n if (track.kind === 'audio') {\n this._dtmf = pc.createDTMFSender(track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n },\n _pc: pc\n };\n };\n\n // augment addTrack when getSenders is not available.\n if (!window.RTCPeerConnection.prototype.getSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n this._senders = this._senders || [];\n return this._senders.slice(); // return a copy of the internal state.\n };\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {\n var sender = origAddTrack.apply(this, arguments);\n if (!sender) {\n sender = shimSenderWithDtmf(this, track);\n this._senders.push(sender);\n }\n return sender;\n };\n\n var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {\n origRemoveTrack.apply(this, arguments);\n var idx = this._senders.indexOf(sender);\n if (idx !== -1) {\n this._senders.splice(idx, 1);\n }\n };\n }\n var origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this2 = this;\n\n this._senders = this._senders || [];\n origAddStream.apply(this, [stream]);\n stream.getTracks().forEach(function (track) {\n _this2._senders.push(shimSenderWithDtmf(_this2, track));\n });\n };\n\n var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n var _this3 = this;\n\n this._senders = this._senders || [];\n origRemoveStream.apply(this, [stream]);\n\n stream.getTracks().forEach(function (track) {\n var sender = _this3._senders.find(function (s) {\n return s.track === track;\n });\n if (sender) {\n // remove sender\n _this3._senders.splice(_this3._senders.indexOf(sender), 1);\n }\n });\n };\n } else if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {\n var origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n var _this4 = this;\n\n var senders = origGetSenders.apply(this, []);\n senders.forEach(function (sender) {\n return sender._pc = _this4;\n });\n return senders;\n };\n\n Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {\n get: function get() {\n if (this._dtmf === undefined) {\n if (this.track.kind === 'audio') {\n this._dtmf = this._pc.createDTMFSender(this.track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n }\n });\n }\n}\n\nfunction shimGetStats(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n\n var origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n var _this5 = this;\n\n var _arguments = Array.prototype.slice.call(arguments),\n selector = _arguments[0],\n onSucc = _arguments[1],\n onErr = _arguments[2];\n\n // If selector is a function then we are in the old style stats so just\n // pass back the original getStats format to avoid breaking old users.\n\n\n if (arguments.length > 0 && typeof selector === 'function') {\n return origGetStats.apply(this, arguments);\n }\n\n // When spec-style getStats is supported, return those when called with\n // either no arguments or the selector argument is null.\n if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) {\n return origGetStats.apply(this, []);\n }\n\n var fixChromeStats_ = function fixChromeStats_(response) {\n var standardReport = {};\n var reports = response.result();\n reports.forEach(function (report) {\n var standardStats = {\n id: report.id,\n timestamp: report.timestamp,\n type: {\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n }[report.type] || report.type\n };\n report.names().forEach(function (name) {\n standardStats[name] = report.stat(name);\n });\n standardReport[standardStats.id] = standardStats;\n });\n\n return standardReport;\n };\n\n // shim getStats with maplike support\n var makeMapStats = function makeMapStats(stats) {\n return new Map(Object.keys(stats).map(function (key) {\n return [key, stats[key]];\n }));\n };\n\n if (arguments.length >= 2) {\n var successCallbackWrapper_ = function successCallbackWrapper_(response) {\n onSucc(makeMapStats(fixChromeStats_(response)));\n };\n\n return origGetStats.apply(this, [successCallbackWrapper_, selector]);\n }\n\n // promise-support\n return new Promise(function (resolve, reject) {\n origGetStats.apply(_this5, [function (response) {\n resolve(makeMapStats(fixChromeStats_(response)));\n }, reject]);\n }).then(onSucc, onErr);\n };\n}\n\nfunction shimSenderReceiverGetStats(window) {\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) {\n return;\n }\n\n // shim sender stats.\n if (!('getStats' in window.RTCRtpSender.prototype)) {\n var origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n var _this6 = this;\n\n var senders = origGetSenders.apply(this, []);\n senders.forEach(function (sender) {\n return sender._pc = _this6;\n });\n return senders;\n };\n }\n\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n var sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n var sender = this;\n return this._pc.getStats().then(function (result) {\n return (\n /* Note: this will include stats of all senders that\n * send a track with the same id as sender.track as\n * it is not possible to identify the RTCRtpSender.\n */\n utils.filterStats(result, sender.track, true)\n );\n });\n };\n }\n\n // shim receiver stats.\n if (!('getStats' in window.RTCRtpReceiver.prototype)) {\n var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {\n var _this7 = this;\n\n var receivers = origGetReceivers.apply(this, []);\n receivers.forEach(function (receiver) {\n return receiver._pc = _this7;\n });\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', function (e) {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n var receiver = this;\n return this._pc.getStats().then(function (result) {\n return utils.filterStats(result, receiver.track, false);\n });\n };\n }\n\n if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) {\n return;\n }\n\n // shim RTCPeerConnection.getStats(track).\n var origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) {\n var track = arguments[0];\n var sender = void 0;\n var receiver = void 0;\n var err = void 0;\n this.getSenders().forEach(function (s) {\n if (s.track === track) {\n if (sender) {\n err = true;\n } else {\n sender = s;\n }\n }\n });\n this.getReceivers().forEach(function (r) {\n if (r.track === track) {\n if (receiver) {\n err = true;\n } else {\n receiver = r;\n }\n }\n return r.track === track;\n });\n if (err || sender && receiver) {\n return Promise.reject(new DOMException('There are more than one sender or receiver for the track.', 'InvalidAccessError'));\n } else if (sender) {\n return sender.getStats();\n } else if (receiver) {\n return receiver.getStats();\n }\n return Promise.reject(new DOMException('There is no sender or receiver for the track.', 'InvalidAccessError'));\n }\n return origGetStats.apply(this, arguments);\n };\n}\n\nfunction shimAddTrackRemoveTrackWithNative(window) {\n // shim addTrack/removeTrack with native variants in order to make\n // the interactions with legacy getLocalStreams behave as in other browsers.\n // Keeps a mapping stream.id => [stream, rtpsenders...]\n window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {\n var _this8 = this;\n\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n return Object.keys(this._shimmedLocalStreams).map(function (streamId) {\n return _this8._shimmedLocalStreams[streamId][0];\n });\n };\n\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {\n if (!stream) {\n return origAddTrack.apply(this, arguments);\n }\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n var sender = origAddTrack.apply(this, arguments);\n if (!this._shimmedLocalStreams[stream.id]) {\n this._shimmedLocalStreams[stream.id] = [stream, sender];\n } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {\n this._shimmedLocalStreams[stream.id].push(sender);\n }\n return sender;\n };\n\n var origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this9 = this;\n\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n stream.getTracks().forEach(function (track) {\n var alreadyExists = _this9.getSenders().find(function (s) {\n return s.track === track;\n });\n if (alreadyExists) {\n throw new DOMException('Track already exists.', 'InvalidAccessError');\n }\n });\n var existingSenders = this.getSenders();\n origAddStream.apply(this, arguments);\n var newSenders = this.getSenders().filter(function (newSender) {\n return existingSenders.indexOf(newSender) === -1;\n });\n this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);\n };\n\n var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n delete this._shimmedLocalStreams[stream.id];\n return origRemoveStream.apply(this, arguments);\n };\n\n var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {\n var _this10 = this;\n\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n if (sender) {\n Object.keys(this._shimmedLocalStreams).forEach(function (streamId) {\n var idx = _this10._shimmedLocalStreams[streamId].indexOf(sender);\n if (idx !== -1) {\n _this10._shimmedLocalStreams[streamId].splice(idx, 1);\n }\n if (_this10._shimmedLocalStreams[streamId].length === 1) {\n delete _this10._shimmedLocalStreams[streamId];\n }\n });\n }\n return origRemoveTrack.apply(this, arguments);\n };\n}\n\nfunction shimAddTrackRemoveTrack(window, browserDetails) {\n if (!window.RTCPeerConnection) {\n return;\n }\n // shim addTrack and removeTrack.\n if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) {\n return shimAddTrackRemoveTrackWithNative(window);\n }\n\n // also shim pc.getLocalStreams when addTrack is shimmed\n // to return the original streams.\n var origGetLocalStreams = window.RTCPeerConnection.prototype.getLocalStreams;\n window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {\n var _this11 = this;\n\n var nativeStreams = origGetLocalStreams.apply(this);\n this._reverseStreams = this._reverseStreams || {};\n return nativeStreams.map(function (stream) {\n return _this11._reverseStreams[stream.id];\n });\n };\n\n var origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this12 = this;\n\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n stream.getTracks().forEach(function (track) {\n var alreadyExists = _this12.getSenders().find(function (s) {\n return s.track === track;\n });\n if (alreadyExists) {\n throw new DOMException('Track already exists.', 'InvalidAccessError');\n }\n });\n // Add identity mapping for consistency with addTrack.\n // Unless this is being used with a stream from addTrack.\n if (!this._reverseStreams[stream.id]) {\n var newStream = new window.MediaStream(stream.getTracks());\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n stream = newStream;\n }\n origAddStream.apply(this, [stream]);\n };\n\n var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n origRemoveStream.apply(this, [this._streams[stream.id] || stream]);\n delete this._reverseStreams[this._streams[stream.id] ? this._streams[stream.id].id : stream.id];\n delete this._streams[stream.id];\n };\n\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {\n var _this13 = this;\n\n if (this.signalingState === 'closed') {\n throw new DOMException('The RTCPeerConnection\\'s signalingState is \\'closed\\'.', 'InvalidStateError');\n }\n var streams = [].slice.call(arguments, 1);\n if (streams.length !== 1 || !streams[0].getTracks().find(function (t) {\n return t === track;\n })) {\n // this is not fully correct but all we can manage without\n // [[associated MediaStreams]] internal slot.\n throw new DOMException('The adapter.js addTrack polyfill only supports a single ' + ' stream which is associated with the specified track.', 'NotSupportedError');\n }\n\n var alreadyExists = this.getSenders().find(function (s) {\n return s.track === track;\n });\n if (alreadyExists) {\n throw new DOMException('Track already exists.', 'InvalidAccessError');\n }\n\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n var oldStream = this._streams[stream.id];\n if (oldStream) {\n // this is using odd Chrome behaviour, use with caution:\n // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815\n // Note: we rely on the high-level addTrack/dtmf shim to\n // create the sender with a dtmf sender.\n oldStream.addTrack(track);\n\n // Trigger ONN async.\n Promise.resolve().then(function () {\n _this13.dispatchEvent(new Event('negotiationneeded'));\n });\n } else {\n var newStream = new window.MediaStream([track]);\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n this.addStream(newStream);\n }\n return this.getSenders().find(function (s) {\n return s.track === track;\n });\n };\n\n // replace the internal stream id with the external one and\n // vice versa.\n function replaceInternalStreamId(pc, description) {\n var sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(function (internalId) {\n var externalStream = pc._reverseStreams[internalId];\n var internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp: sdp\n });\n }\n function replaceExternalStreamId(pc, description) {\n var sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(function (internalId) {\n var externalStream = pc._reverseStreams[internalId];\n var internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp: sdp\n });\n }\n ['createOffer', 'createAnswer'].forEach(function (method) {\n var nativeMethod = window.RTCPeerConnection.prototype[method];\n var methodObj = _defineProperty({}, method, function () {\n var _this14 = this;\n\n var args = arguments;\n var isLegacyCall = arguments.length && typeof arguments[0] === 'function';\n if (isLegacyCall) {\n return nativeMethod.apply(this, [function (description) {\n var desc = replaceInternalStreamId(_this14, description);\n args[0].apply(null, [desc]);\n }, function (err) {\n if (args[1]) {\n args[1].apply(null, err);\n }\n }, arguments[2]]);\n }\n return nativeMethod.apply(this, arguments).then(function (description) {\n return replaceInternalStreamId(_this14, description);\n });\n });\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n\n var origSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription;\n window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() {\n if (!arguments.length || !arguments[0].type) {\n return origSetLocalDescription.apply(this, arguments);\n }\n arguments[0] = replaceExternalStreamId(this, arguments[0]);\n return origSetLocalDescription.apply(this, arguments);\n };\n\n // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier\n\n var origLocalDescription = Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype, 'localDescription');\n Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', {\n get: function get() {\n var description = origLocalDescription.get.apply(this);\n if (description.type === '') {\n return description;\n }\n return replaceInternalStreamId(this, description);\n }\n });\n\n window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {\n var _this15 = this;\n\n if (this.signalingState === 'closed') {\n throw new DOMException('The RTCPeerConnection\\'s signalingState is \\'closed\\'.', 'InvalidStateError');\n }\n // We can not yet check for sender instanceof RTCRtpSender\n // since we shim RTPSender. So we check if sender._pc is set.\n if (!sender._pc) {\n throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.', 'TypeError');\n }\n var isLocal = sender._pc === this;\n if (!isLocal) {\n throw new DOMException('Sender was not created by this connection.', 'InvalidAccessError');\n }\n\n // Search for the native stream the senders track belongs to.\n this._streams = this._streams || {};\n var stream = void 0;\n Object.keys(this._streams).forEach(function (streamid) {\n var hasTrack = _this15._streams[streamid].getTracks().find(function (track) {\n return sender.track === track;\n });\n if (hasTrack) {\n stream = _this15._streams[streamid];\n }\n });\n\n if (stream) {\n if (stream.getTracks().length === 1) {\n // if this is the last track of the stream, remove the stream. This\n // takes care of any shimmed _senders.\n this.removeStream(this._reverseStreams[stream.id]);\n } else {\n // relying on the same odd chrome behaviour as above.\n stream.removeTrack(sender.track);\n }\n this.dispatchEvent(new Event('negotiationneeded'));\n }\n };\n}\n\nfunction shimPeerConnection(window, browserDetails) {\n if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.webkitRTCPeerConnection;\n }\n if (!window.RTCPeerConnection) {\n return;\n }\n\n // shim implicit creation of RTCSessionDescription/RTCIceCandidate\n if (browserDetails.version < 53) {\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {\n var nativeMethod = window.RTCPeerConnection.prototype[method];\n var methodObj = _defineProperty({}, method, function () {\n arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n });\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n}\n\n// Attempt to fix ONN in plan-b mode.\nfunction fixNegotiationNeeded(window, browserDetails) {\n utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) {\n var pc = e.target;\n if (browserDetails.version < 72 || pc.getConfiguration && pc.getConfiguration().sdpSemantics === 'plan-b') {\n if (pc.signalingState !== 'stable') {\n return;\n }\n }\n return e;\n });\n}\n\n},{\"../utils.js\":11,\"./getdisplaymedia\":4,\"./getusermedia\":5}],4:[function(require,module,exports){\n/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = shimGetDisplayMedia;\nfunction shimGetDisplayMedia(window, getSourceId) {\n if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!window.navigator.mediaDevices) {\n return;\n }\n // getSourceId is a function that returns a promise resolving with\n // the sourceId of the screen/window/tab to be shared.\n if (typeof getSourceId !== 'function') {\n console.error('shimGetDisplayMedia: getSourceId argument is not ' + 'a function');\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {\n return getSourceId(constraints).then(function (sourceId) {\n var widthSpecified = constraints.video && constraints.video.width;\n var heightSpecified = constraints.video && constraints.video.height;\n var frameRateSpecified = constraints.video && constraints.video.frameRate;\n constraints.video = {\n mandatory: {\n chromeMediaSource: 'desktop',\n chromeMediaSourceId: sourceId,\n maxFrameRate: frameRateSpecified || 3\n }\n };\n if (widthSpecified) {\n constraints.video.mandatory.maxWidth = widthSpecified;\n }\n if (heightSpecified) {\n constraints.video.mandatory.maxHeight = heightSpecified;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n });\n };\n}\n\n},{}],5:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimGetUserMedia = shimGetUserMedia;\n\nvar _utils = require('../utils.js');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nvar logging = utils.log;\n\nfunction shimGetUserMedia(window, browserDetails) {\n var navigator = window && window.navigator;\n\n if (!navigator.mediaDevices) {\n return;\n }\n\n var constraintsToChrome_ = function constraintsToChrome_(c) {\n if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) !== 'object' || c.mandatory || c.optional) {\n return c;\n }\n var cc = {};\n Object.keys(c).forEach(function (key) {\n if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n return;\n }\n var r = _typeof(c[key]) === 'object' ? c[key] : { ideal: c[key] };\n if (r.exact !== undefined && typeof r.exact === 'number') {\n r.min = r.max = r.exact;\n }\n var oldname_ = function oldname_(prefix, name) {\n if (prefix) {\n return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n }\n return name === 'deviceId' ? 'sourceId' : name;\n };\n if (r.ideal !== undefined) {\n cc.optional = cc.optional || [];\n var oc = {};\n if (typeof r.ideal === 'number') {\n oc[oldname_('min', key)] = r.ideal;\n cc.optional.push(oc);\n oc = {};\n oc[oldname_('max', key)] = r.ideal;\n cc.optional.push(oc);\n } else {\n oc[oldname_('', key)] = r.ideal;\n cc.optional.push(oc);\n }\n }\n if (r.exact !== undefined && typeof r.exact !== 'number') {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_('', key)] = r.exact;\n } else {\n ['min', 'max'].forEach(function (mix) {\n if (r[mix] !== undefined) {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_(mix, key)] = r[mix];\n }\n });\n }\n });\n if (c.advanced) {\n cc.optional = (cc.optional || []).concat(c.advanced);\n }\n return cc;\n };\n\n var shimConstraints_ = function shimConstraints_(constraints, func) {\n if (browserDetails.version >= 61) {\n return func(constraints);\n }\n constraints = JSON.parse(JSON.stringify(constraints));\n if (constraints && _typeof(constraints.audio) === 'object') {\n var remap = function remap(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n constraints = JSON.parse(JSON.stringify(constraints));\n remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');\n remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');\n constraints.audio = constraintsToChrome_(constraints.audio);\n }\n if (constraints && _typeof(constraints.video) === 'object') {\n // Shim facingMode for mobile & surface pro.\n var face = constraints.video.facingMode;\n face = face && ((typeof face === 'undefined' ? 'undefined' : _typeof(face)) === 'object' ? face : { ideal: face });\n var getSupportedFacingModeLies = browserDetails.version < 66;\n\n if (face && (face.exact === 'user' || face.exact === 'environment' || face.ideal === 'user' || face.ideal === 'environment') && !(navigator.mediaDevices.getSupportedConstraints && navigator.mediaDevices.getSupportedConstraints().facingMode && !getSupportedFacingModeLies)) {\n delete constraints.video.facingMode;\n var matches = void 0;\n if (face.exact === 'environment' || face.ideal === 'environment') {\n matches = ['back', 'rear'];\n } else if (face.exact === 'user' || face.ideal === 'user') {\n matches = ['front'];\n }\n if (matches) {\n // Look for matches in label, or use last cam for back (typical).\n return navigator.mediaDevices.enumerateDevices().then(function (devices) {\n devices = devices.filter(function (d) {\n return d.kind === 'videoinput';\n });\n var dev = devices.find(function (d) {\n return matches.some(function (match) {\n return d.label.toLowerCase().includes(match);\n });\n });\n if (!dev && devices.length && matches.includes('back')) {\n dev = devices[devices.length - 1]; // more likely the back cam\n }\n if (dev) {\n constraints.video.deviceId = face.exact ? { exact: dev.deviceId } : { ideal: dev.deviceId };\n }\n constraints.video = constraintsToChrome_(constraints.video);\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n });\n }\n }\n constraints.video = constraintsToChrome_(constraints.video);\n }\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n };\n\n var shimError_ = function shimError_(e) {\n if (browserDetails.version >= 64) {\n return e;\n }\n return {\n name: {\n PermissionDeniedError: 'NotAllowedError',\n PermissionDismissedError: 'NotAllowedError',\n InvalidStateError: 'NotAllowedError',\n DevicesNotFoundError: 'NotFoundError',\n ConstraintNotSatisfiedError: 'OverconstrainedError',\n TrackStartError: 'NotReadableError',\n MediaDeviceFailedDueToShutdown: 'NotAllowedError',\n MediaDeviceKillSwitchOn: 'NotAllowedError',\n TabCaptureError: 'AbortError',\n ScreenCaptureError: 'AbortError',\n DeviceCaptureError: 'AbortError'\n }[e.name] || e.name,\n message: e.message,\n constraint: e.constraint || e.constraintName,\n toString: function toString() {\n return this.name + (this.message && ': ') + this.message;\n }\n };\n };\n\n var getUserMedia_ = function getUserMedia_(constraints, onSuccess, onError) {\n shimConstraints_(constraints, function (c) {\n navigator.webkitGetUserMedia(c, onSuccess, function (e) {\n if (onError) {\n onError(shimError_(e));\n }\n });\n });\n };\n navigator.getUserMedia = getUserMedia_.bind(navigator);\n\n // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n // function which returns a Promise, it does not accept spec-style\n // constraints.\n if (navigator.mediaDevices.getUserMedia) {\n var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function (cs) {\n return shimConstraints_(cs, function (c) {\n return origGetUserMedia(c).then(function (stream) {\n if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) {\n stream.getTracks().forEach(function (track) {\n track.stop();\n });\n throw new DOMException('', 'NotFoundError');\n }\n return stream;\n }, function (e) {\n return Promise.reject(shimError_(e));\n });\n });\n };\n }\n}\n\n},{\"../utils.js\":11}],6:[function(require,module,exports){\n/*\n * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimRTCIceCandidate = shimRTCIceCandidate;\nexports.shimMaxMessageSize = shimMaxMessageSize;\nexports.shimSendThrowTypeError = shimSendThrowTypeError;\nexports.shimConnectionState = shimConnectionState;\nexports.removeExtmapAllowMixed = removeExtmapAllowMixed;\nexports.shimAddIceCandidateNullOrEmpty = shimAddIceCandidateNullOrEmpty;\n\nvar _sdp = require('sdp');\n\nvar _sdp2 = _interopRequireDefault(_sdp);\n\nvar _utils = require('./utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction shimRTCIceCandidate(window) {\n // foundation is arbitrarily chosen as an indicator for full support for\n // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface\n if (!window.RTCIceCandidate || window.RTCIceCandidate && 'foundation' in window.RTCIceCandidate.prototype) {\n return;\n }\n\n var NativeRTCIceCandidate = window.RTCIceCandidate;\n window.RTCIceCandidate = function RTCIceCandidate(args) {\n // Remove the a= which shouldn't be part of the candidate string.\n if ((typeof args === 'undefined' ? 'undefined' : _typeof(args)) === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) {\n args = JSON.parse(JSON.stringify(args));\n args.candidate = args.candidate.substr(2);\n }\n\n if (args.candidate && args.candidate.length) {\n // Augment the native candidate with the parsed fields.\n var nativeCandidate = new NativeRTCIceCandidate(args);\n var parsedCandidate = _sdp2.default.parseCandidate(args.candidate);\n var augmentedCandidate = Object.assign(nativeCandidate, parsedCandidate);\n\n // Add a serializer that does not serialize the extra attributes.\n augmentedCandidate.toJSON = function toJSON() {\n return {\n candidate: augmentedCandidate.candidate,\n sdpMid: augmentedCandidate.sdpMid,\n sdpMLineIndex: augmentedCandidate.sdpMLineIndex,\n usernameFragment: augmentedCandidate.usernameFragment\n };\n };\n return augmentedCandidate;\n }\n return new NativeRTCIceCandidate(args);\n };\n window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype;\n\n // Hook up the augmented candidate in onicecandidate and\n // addEventListener('icecandidate', ...)\n utils.wrapPeerConnectionEvent(window, 'icecandidate', function (e) {\n if (e.candidate) {\n Object.defineProperty(e, 'candidate', {\n value: new window.RTCIceCandidate(e.candidate),\n writable: 'false'\n });\n }\n return e;\n });\n}\n\nfunction shimMaxMessageSize(window, browserDetails) {\n if (!window.RTCPeerConnection) {\n return;\n }\n\n if (!('sctp' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {\n get: function get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n }\n });\n }\n\n var sctpInDescription = function sctpInDescription(description) {\n if (!description || !description.sdp) {\n return false;\n }\n var sections = _sdp2.default.splitSections(description.sdp);\n sections.shift();\n return sections.some(function (mediaSection) {\n var mLine = _sdp2.default.parseMLine(mediaSection);\n return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1;\n });\n };\n\n var getRemoteFirefoxVersion = function getRemoteFirefoxVersion(description) {\n // TODO: Is there a better solution for detecting Firefox?\n var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\\d+)/);\n if (match === null || match.length < 2) {\n return -1;\n }\n var version = parseInt(match[1], 10);\n // Test for NaN (yes, this is ugly)\n return version !== version ? -1 : version;\n };\n\n var getCanSendMaxMessageSize = function getCanSendMaxMessageSize(remoteIsFirefox) {\n // Every implementation we know can send at least 64 KiB.\n // Note: Although Chrome is technically able to send up to 256 KiB, the\n // data does not reach the other peer reliably.\n // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419\n var canSendMaxMessageSize = 65536;\n if (browserDetails.browser === 'firefox') {\n if (browserDetails.version < 57) {\n if (remoteIsFirefox === -1) {\n // FF < 57 will send in 16 KiB chunks using the deprecated PPID\n // fragmentation.\n canSendMaxMessageSize = 16384;\n } else {\n // However, other FF (and RAWRTC) can reassemble PPID-fragmented\n // messages. Thus, supporting ~2 GiB when sending.\n canSendMaxMessageSize = 2147483637;\n }\n } else if (browserDetails.version < 60) {\n // Currently, all FF >= 57 will reset the remote maximum message size\n // to the default value when a data channel is created at a later\n // stage. :(\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n canSendMaxMessageSize = browserDetails.version === 57 ? 65535 : 65536;\n } else {\n // FF >= 60 supports sending ~2 GiB\n canSendMaxMessageSize = 2147483637;\n }\n }\n return canSendMaxMessageSize;\n };\n\n var getMaxMessageSize = function getMaxMessageSize(description, remoteIsFirefox) {\n // Note: 65536 bytes is the default value from the SDP spec. Also,\n // every implementation we know supports receiving 65536 bytes.\n var maxMessageSize = 65536;\n\n // FF 57 has a slightly incorrect default remote max message size, so\n // we need to adjust it here to avoid a failure when sending.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697\n if (browserDetails.browser === 'firefox' && browserDetails.version === 57) {\n maxMessageSize = 65535;\n }\n\n var match = _sdp2.default.matchPrefix(description.sdp, 'a=max-message-size:');\n if (match.length > 0) {\n maxMessageSize = parseInt(match[0].substr(19), 10);\n } else if (browserDetails.browser === 'firefox' && remoteIsFirefox !== -1) {\n // If the maximum message size is not present in the remote SDP and\n // both local and remote are Firefox, the remote peer can receive\n // ~2 GiB.\n maxMessageSize = 2147483637;\n }\n return maxMessageSize;\n };\n\n var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {\n this._sctp = null;\n // Chrome decided to not expose .sctp in plan-b mode.\n // As usual, adapter.js has to do an 'ugly worakaround'\n // to cover up the mess.\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {\n var _getConfiguration = this.getConfiguration(),\n sdpSemantics = _getConfiguration.sdpSemantics;\n\n if (sdpSemantics === 'plan-b') {\n Object.defineProperty(this, 'sctp', {\n get: function get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n },\n\n enumerable: true,\n configurable: true\n });\n }\n }\n\n if (sctpInDescription(arguments[0])) {\n // Check if the remote is FF.\n var isFirefox = getRemoteFirefoxVersion(arguments[0]);\n\n // Get the maximum message size the local peer is capable of sending\n var canSendMMS = getCanSendMaxMessageSize(isFirefox);\n\n // Get the maximum message size of the remote peer.\n var remoteMMS = getMaxMessageSize(arguments[0], isFirefox);\n\n // Determine final maximum message size\n var maxMessageSize = void 0;\n if (canSendMMS === 0 && remoteMMS === 0) {\n maxMessageSize = Number.POSITIVE_INFINITY;\n } else if (canSendMMS === 0 || remoteMMS === 0) {\n maxMessageSize = Math.max(canSendMMS, remoteMMS);\n } else {\n maxMessageSize = Math.min(canSendMMS, remoteMMS);\n }\n\n // Create a dummy RTCSctpTransport object and the 'maxMessageSize'\n // attribute.\n var sctp = {};\n Object.defineProperty(sctp, 'maxMessageSize', {\n get: function get() {\n return maxMessageSize;\n }\n });\n this._sctp = sctp;\n }\n\n return origSetRemoteDescription.apply(this, arguments);\n };\n}\n\nfunction shimSendThrowTypeError(window) {\n if (!(window.RTCPeerConnection && 'createDataChannel' in window.RTCPeerConnection.prototype)) {\n return;\n }\n\n // Note: Although Firefox >= 57 has a native implementation, the maximum\n // message size can be reset for all data channels at a later stage.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n\n function wrapDcSend(dc, pc) {\n var origDataChannelSend = dc.send;\n dc.send = function send() {\n var data = arguments[0];\n var length = data.length || data.size || data.byteLength;\n if (dc.readyState === 'open' && pc.sctp && length > pc.sctp.maxMessageSize) {\n throw new TypeError('Message too large (can send a maximum of ' + pc.sctp.maxMessageSize + ' bytes)');\n }\n return origDataChannelSend.apply(dc, arguments);\n };\n }\n var origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel;\n window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() {\n var dataChannel = origCreateDataChannel.apply(this, arguments);\n wrapDcSend(dataChannel, this);\n return dataChannel;\n };\n utils.wrapPeerConnectionEvent(window, 'datachannel', function (e) {\n wrapDcSend(e.channel, e.target);\n return e;\n });\n}\n\n/* shims RTCConnectionState by pretending it is the same as iceConnectionState.\n * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12\n * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect\n * since DTLS failures would be hidden. See\n * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827\n * for the Firefox tracking bug.\n */\nfunction shimConnectionState(window) {\n if (!window.RTCPeerConnection || 'connectionState' in window.RTCPeerConnection.prototype) {\n return;\n }\n var proto = window.RTCPeerConnection.prototype;\n Object.defineProperty(proto, 'connectionState', {\n get: function get() {\n return {\n completed: 'connected',\n checking: 'connecting'\n }[this.iceConnectionState] || this.iceConnectionState;\n },\n\n enumerable: true,\n configurable: true\n });\n Object.defineProperty(proto, 'onconnectionstatechange', {\n get: function get() {\n return this._onconnectionstatechange || null;\n },\n set: function set(cb) {\n if (this._onconnectionstatechange) {\n this.removeEventListener('connectionstatechange', this._onconnectionstatechange);\n delete this._onconnectionstatechange;\n }\n if (cb) {\n this.addEventListener('connectionstatechange', this._onconnectionstatechange = cb);\n }\n },\n\n enumerable: true,\n configurable: true\n });\n\n ['setLocalDescription', 'setRemoteDescription'].forEach(function (method) {\n var origMethod = proto[method];\n proto[method] = function () {\n if (!this._connectionstatechangepoly) {\n this._connectionstatechangepoly = function (e) {\n var pc = e.target;\n if (pc._lastConnectionState !== pc.connectionState) {\n pc._lastConnectionState = pc.connectionState;\n var newEvent = new Event('connectionstatechange', e);\n pc.dispatchEvent(newEvent);\n }\n return e;\n };\n this.addEventListener('iceconnectionstatechange', this._connectionstatechangepoly);\n }\n return origMethod.apply(this, arguments);\n };\n });\n}\n\nfunction removeExtmapAllowMixed(window, browserDetails) {\n /* remove a=extmap-allow-mixed for webrtc.org < M71 */\n if (!window.RTCPeerConnection) {\n return;\n }\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {\n return;\n }\n if (browserDetails.browser === 'safari' && browserDetails.version >= 605) {\n return;\n }\n var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) {\n if (desc && desc.sdp && desc.sdp.indexOf('\\na=extmap-allow-mixed') !== -1) {\n var sdp = desc.sdp.split('\\n').filter(function (line) {\n return line.trim() !== 'a=extmap-allow-mixed';\n }).join('\\n');\n // Safari enforces read-only-ness of RTCSessionDescription fields.\n if (window.RTCSessionDescription && desc instanceof window.RTCSessionDescription) {\n arguments[0] = new window.RTCSessionDescription({\n type: desc.type,\n sdp: sdp\n });\n } else {\n desc.sdp = sdp;\n }\n }\n return nativeSRD.apply(this, arguments);\n };\n}\n\nfunction shimAddIceCandidateNullOrEmpty(window, browserDetails) {\n // Support for addIceCandidate(null or undefined)\n // as well as addIceCandidate({candidate: \"\", ...})\n // https://bugs.chromium.org/p/chromium/issues/detail?id=978582\n // Note: must be called before other polyfills which change the signature.\n if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {\n return;\n }\n var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate;\n if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) {\n return;\n }\n window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() {\n if (!arguments[0]) {\n if (arguments[1]) {\n arguments[1].apply(null);\n }\n return Promise.resolve();\n }\n // Firefox 68+ emits and processes {candidate: \"\", ...}, ignore\n // in older versions.\n // Native support for ignoring exists for Chrome M77+.\n // Safari ignores as well, exact version unknown but works in the same\n // version that also ignores addIceCandidate(null).\n if ((browserDetails.browser === 'chrome' && browserDetails.version < 78 || browserDetails.browser === 'firefox' && browserDetails.version < 68 || browserDetails.browser === 'safari') && arguments[0] && arguments[0].candidate === '') {\n return Promise.resolve();\n }\n return nativeAddIceCandidate.apply(this, arguments);\n };\n}\n\n},{\"./utils\":11,\"sdp\":12}],7:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _getusermedia = require('./getusermedia');\n\nObject.defineProperty(exports, 'shimGetUserMedia', {\n enumerable: true,\n get: function get() {\n return _getusermedia.shimGetUserMedia;\n }\n});\n\nvar _getdisplaymedia = require('./getdisplaymedia');\n\nObject.defineProperty(exports, 'shimGetDisplayMedia', {\n enumerable: true,\n get: function get() {\n return _getdisplaymedia.shimGetDisplayMedia;\n }\n});\nexports.shimOnTrack = shimOnTrack;\nexports.shimPeerConnection = shimPeerConnection;\nexports.shimSenderGetStats = shimSenderGetStats;\nexports.shimReceiverGetStats = shimReceiverGetStats;\nexports.shimRemoveStream = shimRemoveStream;\nexports.shimRTCDataChannel = shimRTCDataChannel;\nexports.shimAddTransceiver = shimAddTransceiver;\nexports.shimGetParameters = shimGetParameters;\nexports.shimCreateOffer = shimCreateOffer;\nexports.shimCreateAnswer = shimCreateAnswer;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nfunction shimOnTrack(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get: function get() {\n return { receiver: this.receiver };\n }\n });\n }\n}\n\nfunction shimPeerConnection(window, browserDetails) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {\n return; // probably media.peerconnection.enabled=false in about:config\n }\n if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.mozRTCPeerConnection;\n }\n\n if (browserDetails.version < 53) {\n // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {\n var nativeMethod = window.RTCPeerConnection.prototype[method];\n var methodObj = _defineProperty({}, method, function () {\n arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n });\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n\n var modernStatsTypes = {\n inboundrtp: 'inbound-rtp',\n outboundrtp: 'outbound-rtp',\n candidatepair: 'candidate-pair',\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n };\n\n var nativeGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n var _arguments = Array.prototype.slice.call(arguments),\n selector = _arguments[0],\n onSucc = _arguments[1],\n onErr = _arguments[2];\n\n return nativeGetStats.apply(this, [selector || null]).then(function (stats) {\n if (browserDetails.version < 53 && !onSucc) {\n // Shim only promise getStats with spec-hyphens in type names\n // Leave callback version alone; misc old uses of forEach before Map\n try {\n stats.forEach(function (stat) {\n stat.type = modernStatsTypes[stat.type] || stat.type;\n });\n } catch (e) {\n if (e.name !== 'TypeError') {\n throw e;\n }\n // Avoid TypeError: \"type\" is read-only, in old versions. 34-43ish\n stats.forEach(function (stat, i) {\n stats.set(i, Object.assign({}, stat, {\n type: modernStatsTypes[stat.type] || stat.type\n }));\n });\n }\n }\n return stats;\n }).then(onSucc, onErr);\n };\n}\n\nfunction shimSenderGetStats(window) {\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {\n return;\n }\n var origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n var _this = this;\n\n var senders = origGetSenders.apply(this, []);\n senders.forEach(function (sender) {\n return sender._pc = _this;\n });\n return senders;\n };\n }\n\n var origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n var sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map());\n };\n}\n\nfunction shimReceiverGetStats(window) {\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {\n return;\n }\n var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {\n var _this2 = this;\n\n var receivers = origGetReceivers.apply(this, []);\n receivers.forEach(function (receiver) {\n return receiver._pc = _this2;\n });\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', function (e) {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n return this._pc.getStats(this.track);\n };\n}\n\nfunction shimRemoveStream(window) {\n if (!window.RTCPeerConnection || 'removeStream' in window.RTCPeerConnection.prototype) {\n return;\n }\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n var _this3 = this;\n\n utils.deprecated('removeStream', 'removeTrack');\n this.getSenders().forEach(function (sender) {\n if (sender.track && stream.getTracks().includes(sender.track)) {\n _this3.removeTrack(sender);\n }\n });\n };\n}\n\nfunction shimRTCDataChannel(window) {\n // rename DataChannel to RTCDataChannel (native fix in FF60):\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851\n if (window.DataChannel && !window.RTCDataChannel) {\n window.RTCDataChannel = window.DataChannel;\n }\n}\n\nfunction shimAddTransceiver(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {\n return;\n }\n var origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;\n if (origAddTransceiver) {\n window.RTCPeerConnection.prototype.addTransceiver = function addTransceiver() {\n this.setParametersPromises = [];\n var initParameters = arguments[1];\n var shouldPerformCheck = initParameters && 'sendEncodings' in initParameters;\n if (shouldPerformCheck) {\n // If sendEncodings params are provided, validate grammar\n initParameters.sendEncodings.forEach(function (encodingParam) {\n if ('rid' in encodingParam) {\n var ridRegex = /^[a-z0-9]{0,16}$/i;\n if (!ridRegex.test(encodingParam.rid)) {\n throw new TypeError('Invalid RID value provided.');\n }\n }\n if ('scaleResolutionDownBy' in encodingParam) {\n if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {\n throw new RangeError('scale_resolution_down_by must be >= 1.0');\n }\n }\n if ('maxFramerate' in encodingParam) {\n if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {\n throw new RangeError('max_framerate must be >= 0.0');\n }\n }\n });\n }\n var transceiver = origAddTransceiver.apply(this, arguments);\n if (shouldPerformCheck) {\n // Check if the init options were applied. If not we do this in an\n // asynchronous way and save the promise reference in a global object.\n // This is an ugly hack, but at the same time is way more robust than\n // checking the sender parameters before and after the createOffer\n // Also note that after the createoffer we are not 100% sure that\n // the params were asynchronously applied so we might miss the\n // opportunity to recreate offer.\n var sender = transceiver.sender;\n\n var params = sender.getParameters();\n if (!('encodings' in params) ||\n // Avoid being fooled by patched getParameters() below.\n params.encodings.length === 1 && Object.keys(params.encodings[0]).length === 0) {\n params.encodings = initParameters.sendEncodings;\n sender.sendEncodings = initParameters.sendEncodings;\n this.setParametersPromises.push(sender.setParameters(params).then(function () {\n delete sender.sendEncodings;\n }).catch(function () {\n delete sender.sendEncodings;\n }));\n }\n }\n return transceiver;\n };\n }\n}\n\nfunction shimGetParameters(window) {\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCRtpSender)) {\n return;\n }\n var origGetParameters = window.RTCRtpSender.prototype.getParameters;\n if (origGetParameters) {\n window.RTCRtpSender.prototype.getParameters = function getParameters() {\n var params = origGetParameters.apply(this, arguments);\n if (!('encodings' in params)) {\n params.encodings = [].concat(this.sendEncodings || [{}]);\n }\n return params;\n };\n }\n}\n\nfunction shimCreateOffer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {\n return;\n }\n var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer = function createOffer() {\n var _this4 = this,\n _arguments2 = arguments;\n\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises).then(function () {\n return origCreateOffer.apply(_this4, _arguments2);\n }).finally(function () {\n _this4.setParametersPromises = [];\n });\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\nfunction shimCreateAnswer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {\n return;\n }\n var origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;\n window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {\n var _this5 = this,\n _arguments3 = arguments;\n\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises).then(function () {\n return origCreateAnswer.apply(_this5, _arguments3);\n }).finally(function () {\n _this5.setParametersPromises = [];\n });\n }\n return origCreateAnswer.apply(this, arguments);\n };\n}\n\n},{\"../utils\":11,\"./getdisplaymedia\":8,\"./getusermedia\":9}],8:[function(require,module,exports){\n/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.shimGetDisplayMedia = shimGetDisplayMedia;\nfunction shimGetDisplayMedia(window, preferredMediaSource) {\n if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!window.navigator.mediaDevices) {\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {\n if (!(constraints && constraints.video)) {\n var err = new DOMException('getDisplayMedia without video ' + 'constraints is undefined');\n err.name = 'NotFoundError';\n // from https://heycam.github.io/webidl/#idl-DOMException-error-names\n err.code = 8;\n return Promise.reject(err);\n }\n if (constraints.video === true) {\n constraints.video = { mediaSource: preferredMediaSource };\n } else {\n constraints.video.mediaSource = preferredMediaSource;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n };\n}\n\n},{}],9:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimGetUserMedia = shimGetUserMedia;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction shimGetUserMedia(window, browserDetails) {\n var navigator = window && window.navigator;\n var MediaStreamTrack = window && window.MediaStreamTrack;\n\n navigator.getUserMedia = function (constraints, onSuccess, onError) {\n // Replace Firefox 44+'s deprecation warning with unprefixed version.\n utils.deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia');\n navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);\n };\n\n if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {\n var remap = function remap(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n\n var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function (c) {\n if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object' && _typeof(c.audio) === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c.audio, 'autoGainControl', 'mozAutoGainControl');\n remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeGetUserMedia(c);\n };\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {\n var nativeGetSettings = MediaStreamTrack.prototype.getSettings;\n MediaStreamTrack.prototype.getSettings = function () {\n var obj = nativeGetSettings.apply(this, arguments);\n remap(obj, 'mozAutoGainControl', 'autoGainControl');\n remap(obj, 'mozNoiseSuppression', 'noiseSuppression');\n return obj;\n };\n }\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {\n var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints;\n MediaStreamTrack.prototype.applyConstraints = function (c) {\n if (this.kind === 'audio' && (typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c, 'autoGainControl', 'mozAutoGainControl');\n remap(c, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeApplyConstraints.apply(this, [c]);\n };\n }\n }\n}\n\n},{\"../utils\":11}],10:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.shimLocalStreamsAPI = shimLocalStreamsAPI;\nexports.shimRemoteStreamsAPI = shimRemoteStreamsAPI;\nexports.shimCallbacksAPI = shimCallbacksAPI;\nexports.shimGetUserMedia = shimGetUserMedia;\nexports.shimConstraints = shimConstraints;\nexports.shimRTCIceServerUrls = shimRTCIceServerUrls;\nexports.shimTrackEventTransceiver = shimTrackEventTransceiver;\nexports.shimCreateOfferLegacy = shimCreateOfferLegacy;\nexports.shimAudioContext = shimAudioContext;\n\nvar _utils = require('../utils');\n\nvar utils = _interopRequireWildcard(_utils);\n\nfunction _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }\n\nfunction shimLocalStreamsAPI(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n return this._localStreams;\n };\n }\n if (!('addStream' in window.RTCPeerConnection.prototype)) {\n var _addTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n var _this = this;\n\n if (!this._localStreams) {\n this._localStreams = [];\n }\n if (!this._localStreams.includes(stream)) {\n this._localStreams.push(stream);\n }\n // Try to emulate Chrome's behaviour of adding in audio-video order.\n // Safari orders by track id.\n stream.getAudioTracks().forEach(function (track) {\n return _addTrack.call(_this, track, stream);\n });\n stream.getVideoTracks().forEach(function (track) {\n return _addTrack.call(_this, track, stream);\n });\n };\n\n window.RTCPeerConnection.prototype.addTrack = function addTrack(track) {\n var _this2 = this;\n\n for (var _len = arguments.length, streams = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n streams[_key - 1] = arguments[_key];\n }\n\n if (streams) {\n streams.forEach(function (stream) {\n if (!_this2._localStreams) {\n _this2._localStreams = [stream];\n } else if (!_this2._localStreams.includes(stream)) {\n _this2._localStreams.push(stream);\n }\n });\n }\n return _addTrack.apply(this, arguments);\n };\n }\n if (!('removeStream' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {\n var _this3 = this;\n\n if (!this._localStreams) {\n this._localStreams = [];\n }\n var index = this._localStreams.indexOf(stream);\n if (index === -1) {\n return;\n }\n this._localStreams.splice(index, 1);\n var tracks = stream.getTracks();\n this.getSenders().forEach(function (sender) {\n if (tracks.includes(sender.track)) {\n _this3.removeTrack(sender);\n }\n });\n };\n }\n}\n\nfunction shimRemoteStreamsAPI(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() {\n return this._remoteStreams ? this._remoteStreams : [];\n };\n }\n if (!('onaddstream' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {\n get: function get() {\n return this._onaddstream;\n },\n set: function set(f) {\n var _this4 = this;\n\n if (this._onaddstream) {\n this.removeEventListener('addstream', this._onaddstream);\n this.removeEventListener('track', this._onaddstreampoly);\n }\n this.addEventListener('addstream', this._onaddstream = f);\n this.addEventListener('track', this._onaddstreampoly = function (e) {\n e.streams.forEach(function (stream) {\n if (!_this4._remoteStreams) {\n _this4._remoteStreams = [];\n }\n if (_this4._remoteStreams.includes(stream)) {\n return;\n }\n _this4._remoteStreams.push(stream);\n var event = new Event('addstream');\n event.stream = stream;\n _this4.dispatchEvent(event);\n });\n });\n }\n });\n var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {\n var pc = this;\n if (!this._onaddstreampoly) {\n this.addEventListener('track', this._onaddstreampoly = function (e) {\n e.streams.forEach(function (stream) {\n if (!pc._remoteStreams) {\n pc._remoteStreams = [];\n }\n if (pc._remoteStreams.indexOf(stream) >= 0) {\n return;\n }\n pc._remoteStreams.push(stream);\n var event = new Event('addstream');\n event.stream = stream;\n pc.dispatchEvent(event);\n });\n });\n }\n return origSetRemoteDescription.apply(pc, arguments);\n };\n }\n}\n\nfunction shimCallbacksAPI(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n var prototype = window.RTCPeerConnection.prototype;\n var origCreateOffer = prototype.createOffer;\n var origCreateAnswer = prototype.createAnswer;\n var setLocalDescription = prototype.setLocalDescription;\n var setRemoteDescription = prototype.setRemoteDescription;\n var addIceCandidate = prototype.addIceCandidate;\n\n prototype.createOffer = function createOffer(successCallback, failureCallback) {\n var options = arguments.length >= 2 ? arguments[2] : arguments[0];\n var promise = origCreateOffer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n prototype.createAnswer = function createAnswer(successCallback, failureCallback) {\n var options = arguments.length >= 2 ? arguments[2] : arguments[0];\n var promise = origCreateAnswer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n var withCallback = function withCallback(description, successCallback, failureCallback) {\n var promise = setLocalDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setLocalDescription = withCallback;\n\n withCallback = function withCallback(description, successCallback, failureCallback) {\n var promise = setRemoteDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setRemoteDescription = withCallback;\n\n withCallback = function withCallback(candidate, successCallback, failureCallback) {\n var promise = addIceCandidate.apply(this, [candidate]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.addIceCandidate = withCallback;\n}\n\nfunction shimGetUserMedia(window) {\n var navigator = window && window.navigator;\n\n if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {\n // shim not needed in Safari 12.1\n var mediaDevices = navigator.mediaDevices;\n var _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);\n navigator.mediaDevices.getUserMedia = function (constraints) {\n return _getUserMedia(shimConstraints(constraints));\n };\n }\n\n if (!navigator.getUserMedia && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {\n navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {\n navigator.mediaDevices.getUserMedia(constraints).then(cb, errcb);\n }.bind(navigator);\n }\n}\n\nfunction shimConstraints(constraints) {\n if (constraints && constraints.video !== undefined) {\n return Object.assign({}, constraints, { video: utils.compactObject(constraints.video) });\n }\n\n return constraints;\n}\n\nfunction shimRTCIceServerUrls(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n // migrate from non-spec RTCIceServer.url to RTCIceServer.urls\n var OrigPeerConnection = window.RTCPeerConnection;\n window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) {\n if (pcConfig && pcConfig.iceServers) {\n var newIceServers = [];\n for (var i = 0; i < pcConfig.iceServers.length; i++) {\n var server = pcConfig.iceServers[i];\n if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) {\n utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');\n server = JSON.parse(JSON.stringify(server));\n server.urls = server.url;\n delete server.url;\n newIceServers.push(server);\n } else {\n newIceServers.push(pcConfig.iceServers[i]);\n }\n }\n pcConfig.iceServers = newIceServers;\n }\n return new OrigPeerConnection(pcConfig, pcConstraints);\n };\n window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;\n // wrap static methods. Currently just generateCertificate.\n if ('generateCertificate' in OrigPeerConnection) {\n Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {\n get: function get() {\n return OrigPeerConnection.generateCertificate;\n }\n });\n }\n}\n\nfunction shimTrackEventTransceiver(window) {\n // Add event.transceiver member over deprecated event.receiver\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get: function get() {\n return { receiver: this.receiver };\n }\n });\n }\n}\n\nfunction shimCreateOfferLegacy(window) {\n var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer = function createOffer(offerOptions) {\n if (offerOptions) {\n if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio;\n }\n var audioTransceiver = this.getTransceivers().find(function (transceiver) {\n return transceiver.receiver.track.kind === 'audio';\n });\n if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {\n if (audioTransceiver.direction === 'sendrecv') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('sendonly');\n } else {\n audioTransceiver.direction = 'sendonly';\n }\n } else if (audioTransceiver.direction === 'recvonly') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('inactive');\n } else {\n audioTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) {\n this.addTransceiver('audio');\n }\n\n if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo;\n }\n var videoTransceiver = this.getTransceivers().find(function (transceiver) {\n return transceiver.receiver.track.kind === 'video';\n });\n if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {\n if (videoTransceiver.direction === 'sendrecv') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('sendonly');\n } else {\n videoTransceiver.direction = 'sendonly';\n }\n } else if (videoTransceiver.direction === 'recvonly') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('inactive');\n } else {\n videoTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) {\n this.addTransceiver('video');\n }\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\nfunction shimAudioContext(window) {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || window.AudioContext) {\n return;\n }\n window.AudioContext = window.webkitAudioContext;\n}\n\n},{\"../utils\":11}],11:[function(require,module,exports){\n/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexports.extractVersion = extractVersion;\nexports.wrapPeerConnectionEvent = wrapPeerConnectionEvent;\nexports.disableLog = disableLog;\nexports.disableWarnings = disableWarnings;\nexports.log = log;\nexports.deprecated = deprecated;\nexports.detectBrowser = detectBrowser;\nexports.compactObject = compactObject;\nexports.walkStats = walkStats;\nexports.filterStats = filterStats;\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nvar logDisabled_ = true;\nvar deprecationWarnings_ = true;\n\n/**\n * Extract browser version out of the provided user agent string.\n *\n * @param {!string} uastring userAgent string.\n * @param {!string} expr Regular expression used as match criteria.\n * @param {!number} pos position in the version string to be returned.\n * @return {!number} browser version.\n */\nfunction extractVersion(uastring, expr, pos) {\n var match = uastring.match(expr);\n return match && match.length >= pos && parseInt(match[pos], 10);\n}\n\n// Wraps the peerconnection event eventNameToWrap in a function\n// which returns the modified event object (or false to prevent\n// the event).\nfunction wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {\n if (!window.RTCPeerConnection) {\n return;\n }\n var proto = window.RTCPeerConnection.prototype;\n var nativeAddEventListener = proto.addEventListener;\n proto.addEventListener = function (nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap) {\n return nativeAddEventListener.apply(this, arguments);\n }\n var wrappedCallback = function wrappedCallback(e) {\n var modifiedEvent = wrapper(e);\n if (modifiedEvent) {\n if (cb.handleEvent) {\n cb.handleEvent(modifiedEvent);\n } else {\n cb(modifiedEvent);\n }\n }\n };\n this._eventMap = this._eventMap || {};\n if (!this._eventMap[eventNameToWrap]) {\n this._eventMap[eventNameToWrap] = new Map();\n }\n this._eventMap[eventNameToWrap].set(cb, wrappedCallback);\n return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]);\n };\n\n var nativeRemoveEventListener = proto.removeEventListener;\n proto.removeEventListener = function (nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[eventNameToWrap]) {\n return nativeRemoveEventListener.apply(this, arguments);\n }\n if (!this._eventMap[eventNameToWrap].has(cb)) {\n return nativeRemoveEventListener.apply(this, arguments);\n }\n var unwrappedCb = this._eventMap[eventNameToWrap].get(cb);\n this._eventMap[eventNameToWrap].delete(cb);\n if (this._eventMap[eventNameToWrap].size === 0) {\n delete this._eventMap[eventNameToWrap];\n }\n if (Object.keys(this._eventMap).length === 0) {\n delete this._eventMap;\n }\n return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]);\n };\n\n Object.defineProperty(proto, 'on' + eventNameToWrap, {\n get: function get() {\n return this['_on' + eventNameToWrap];\n },\n set: function set(cb) {\n if (this['_on' + eventNameToWrap]) {\n this.removeEventListener(eventNameToWrap, this['_on' + eventNameToWrap]);\n delete this['_on' + eventNameToWrap];\n }\n if (cb) {\n this.addEventListener(eventNameToWrap, this['_on' + eventNameToWrap] = cb);\n }\n },\n\n enumerable: true,\n configurable: true\n });\n}\n\nfunction disableLog(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');\n }\n logDisabled_ = bool;\n return bool ? 'adapter.js logging disabled' : 'adapter.js logging enabled';\n}\n\n/**\n * Disable or enable deprecation warnings\n * @param {!boolean} bool set to true to disable warnings.\n */\nfunction disableWarnings(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');\n }\n deprecationWarnings_ = !bool;\n return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');\n}\n\nfunction log() {\n if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object') {\n if (logDisabled_) {\n return;\n }\n if (typeof console !== 'undefined' && typeof console.log === 'function') {\n console.log.apply(console, arguments);\n }\n }\n}\n\n/**\n * Shows a deprecation warning suggesting the modern and spec-compatible API.\n */\nfunction deprecated(oldMethod, newMethod) {\n if (!deprecationWarnings_) {\n return;\n }\n console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.');\n}\n\n/**\n * Browser detector.\n *\n * @return {object} result containing browser and version\n * properties.\n */\nfunction detectBrowser(window) {\n // Returned result object.\n var result = { browser: null, version: null };\n\n // Fail early if it's not a browser\n if (typeof window === 'undefined' || !window.navigator) {\n result.browser = 'Not a browser.';\n return result;\n }\n\n var navigator = window.navigator;\n\n\n if (navigator.mozGetUserMedia) {\n // Firefox.\n result.browser = 'firefox';\n result.version = extractVersion(navigator.userAgent, /Firefox\\/(\\d+)\\./, 1);\n } else if (navigator.webkitGetUserMedia || window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer) {\n // Chrome, Chromium, Webview, Opera.\n // Version matches Chrome/WebRTC version.\n // Chrome 74 removed webkitGetUserMedia on http as well so we need the\n // more complicated fallback to webkitRTCPeerConnection.\n result.browser = 'chrome';\n result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\\/(\\d+)\\./, 2);\n } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\\/(\\d+)\\./)) {\n // Safari.\n result.browser = 'safari';\n result.version = extractVersion(navigator.userAgent, /AppleWebKit\\/(\\d+)\\./, 1);\n result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype;\n } else {\n // Default fallthrough: not supported.\n result.browser = 'Not a supported browser.';\n return result;\n }\n\n return result;\n}\n\n/**\n * Checks if something is an object.\n *\n * @param {*} val The something you want to check.\n * @return true if val is an object, false otherwise.\n */\nfunction isObject(val) {\n return Object.prototype.toString.call(val) === '[object Object]';\n}\n\n/**\n * Remove all empty objects and undefined values\n * from a nested object -- an enhanced and vanilla version\n * of Lodash's `compact`.\n */\nfunction compactObject(data) {\n if (!isObject(data)) {\n return data;\n }\n\n return Object.keys(data).reduce(function (accumulator, key) {\n var isObj = isObject(data[key]);\n var value = isObj ? compactObject(data[key]) : data[key];\n var isEmptyObject = isObj && !Object.keys(value).length;\n if (value === undefined || isEmptyObject) {\n return accumulator;\n }\n return Object.assign(accumulator, _defineProperty({}, key, value));\n }, {});\n}\n\n/* iterates the stats graph recursively. */\nfunction walkStats(stats, base, resultSet) {\n if (!base || resultSet.has(base.id)) {\n return;\n }\n resultSet.set(base.id, base);\n Object.keys(base).forEach(function (name) {\n if (name.endsWith('Id')) {\n walkStats(stats, stats.get(base[name]), resultSet);\n } else if (name.endsWith('Ids')) {\n base[name].forEach(function (id) {\n walkStats(stats, stats.get(id), resultSet);\n });\n }\n });\n}\n\n/* filter getStats for a sender/receiver track. */\nfunction filterStats(result, track, outbound) {\n var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';\n var filteredResult = new Map();\n if (track === null) {\n return filteredResult;\n }\n var trackStats = [];\n result.forEach(function (value) {\n if (value.type === 'track' && value.trackIdentifier === track.id) {\n trackStats.push(value);\n }\n });\n trackStats.forEach(function (trackStat) {\n result.forEach(function (stats) {\n if (stats.type === streamStatsType && stats.trackId === trackStat.id) {\n walkStats(result, stats, filteredResult);\n }\n });\n });\n return filteredResult;\n}\n\n},{}],12:[function(require,module,exports){\n/* eslint-env node */\n'use strict';\n\n// SDP helpers.\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function () {\n return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function (blob) {\n return blob.trim().split('\\n').map(function (line) {\n return line.trim();\n });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function (blob) {\n var parts = blob.split('\\nm=');\n return parts.map(function (part, index) {\n return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n });\n};\n\n// returns the session description.\nSDPUtils.getDescription = function (blob) {\n var sections = SDPUtils.splitSections(blob);\n return sections && sections[0];\n};\n\n// returns the individual media sections.\nSDPUtils.getMediaSections = function (blob) {\n var sections = SDPUtils.splitSections(blob);\n sections.shift();\n return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function (blob, prefix) {\n return SDPUtils.splitLines(blob).filter(function (line) {\n return line.indexOf(prefix) === 0;\n });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function (line) {\n var parts = void 0;\n // Parse both variants.\n if (line.indexOf('a=candidate:') === 0) {\n parts = line.substring(12).split(' ');\n } else {\n parts = line.substring(10).split(' ');\n }\n\n var candidate = {\n foundation: parts[0],\n component: { 1: 'rtp', 2: 'rtcp' }[parts[1]],\n protocol: parts[2].toLowerCase(),\n priority: parseInt(parts[3], 10),\n ip: parts[4],\n address: parts[4], // address is an alias for ip.\n port: parseInt(parts[5], 10),\n // skip parts[6] == 'typ'\n type: parts[7]\n };\n\n for (var i = 8; i < parts.length; i += 2) {\n switch (parts[i]) {\n case 'raddr':\n candidate.relatedAddress = parts[i + 1];\n break;\n case 'rport':\n candidate.relatedPort = parseInt(parts[i + 1], 10);\n break;\n case 'tcptype':\n candidate.tcpType = parts[i + 1];\n break;\n case 'ufrag':\n candidate.ufrag = parts[i + 1]; // for backward compatibility.\n candidate.usernameFragment = parts[i + 1];\n break;\n default:\n // extension handling, in particular ufrag. Don't overwrite.\n if (candidate[parts[i]] === undefined) {\n candidate[parts[i]] = parts[i + 1];\n }\n break;\n }\n }\n return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function (candidate) {\n var sdp = [];\n sdp.push(candidate.foundation);\n\n var component = candidate.component;\n if (component === 'rtp') {\n sdp.push(1);\n } else if (component === 'rtcp') {\n sdp.push(2);\n } else {\n sdp.push(component);\n }\n sdp.push(candidate.protocol.toUpperCase());\n sdp.push(candidate.priority);\n sdp.push(candidate.address || candidate.ip);\n sdp.push(candidate.port);\n\n var type = candidate.type;\n sdp.push('typ');\n sdp.push(type);\n if (type !== 'host' && candidate.relatedAddress && candidate.relatedPort) {\n sdp.push('raddr');\n sdp.push(candidate.relatedAddress);\n sdp.push('rport');\n sdp.push(candidate.relatedPort);\n }\n if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n sdp.push('tcptype');\n sdp.push(candidate.tcpType);\n }\n if (candidate.usernameFragment || candidate.ufrag) {\n sdp.push('ufrag');\n sdp.push(candidate.usernameFragment || candidate.ufrag);\n }\n return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function (line) {\n return line.substr(14).split(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function (line) {\n var parts = line.substr(9).split(' ');\n var parsed = {\n payloadType: parseInt(parts.shift(), 10) // was: id\n };\n\n parts = parts[0].split('/');\n\n parsed.name = parts[0];\n parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n // legacy alias, got renamed back to channels in ORTC.\n parsed.numChannels = parsed.channels;\n return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function (codec) {\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n var channels = codec.channels || codec.numChannels || 1;\n return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function (line) {\n var parts = line.substr(9).split(' ');\n return {\n id: parseInt(parts[0], 10),\n direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n uri: parts[1]\n };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function (headerExtension) {\n return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + (headerExtension.direction && headerExtension.direction !== 'sendrecv' ? '/' + headerExtension.direction : '') + ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function (line) {\n var parsed = {};\n var kv = void 0;\n var parts = line.substr(line.indexOf(' ') + 1).split(';');\n for (var j = 0; j < parts.length; j++) {\n kv = parts[j].trim().split('=');\n parsed[kv[0].trim()] = kv[1];\n }\n return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function (codec) {\n var line = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.parameters && Object.keys(codec.parameters).length) {\n var params = [];\n Object.keys(codec.parameters).forEach(function (param) {\n if (codec.parameters[param]) {\n params.push(param + '=' + codec.parameters[param]);\n } else {\n params.push(param);\n }\n });\n line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n }\n return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function (line) {\n var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n return {\n type: parts.shift(),\n parameter: parts.join(' ')\n };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function (codec) {\n var lines = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n // FIXME: special handling for trr-int?\n codec.rtcpFeedback.forEach(function (fb) {\n lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + '\\r\\n';\n });\n }\n return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function (line) {\n var sp = line.indexOf(' ');\n var parts = {\n ssrc: parseInt(line.substr(7, sp - 7), 10)\n };\n var colon = line.indexOf(':', sp);\n if (colon > -1) {\n parts.attribute = line.substr(sp + 1, colon - sp - 1);\n parts.value = line.substr(colon + 1);\n } else {\n parts.attribute = line.substr(sp + 1);\n }\n return parts;\n};\n\nSDPUtils.parseSsrcGroup = function (line) {\n var parts = line.substr(13).split(' ');\n return {\n semantics: parts.shift(),\n ssrcs: parts.map(function (ssrc) {\n return parseInt(ssrc, 10);\n })\n };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function (mediaSection) {\n var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n if (mid) {\n return mid.substr(6);\n }\n};\n\nSDPUtils.parseFingerprint = function (line) {\n var parts = line.substr(14).split(' ');\n return {\n algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n value: parts[1]\n };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function (mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=fingerprint:');\n // Note: a=setup line is ignored since we use the 'auto' role.\n // Note2: 'algorithm' is not case sensitive except in Edge.\n return {\n role: 'auto',\n fingerprints: lines.map(SDPUtils.parseFingerprint)\n };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function (params, setupType) {\n var sdp = 'a=setup:' + setupType + '\\r\\n';\n params.fingerprints.forEach(function (fp) {\n sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n });\n return sdp;\n};\n\n// Parses a=crypto lines into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function (line) {\n var parts = line.substr(9).split(' ');\n return {\n tag: parseInt(parts[0], 10),\n cryptoSuite: parts[1],\n keyParams: parts[2],\n sessionParams: parts.slice(3)\n };\n};\n\nSDPUtils.writeCryptoLine = function (parameters) {\n return 'a=crypto:' + parameters.tag + ' ' + parameters.cryptoSuite + ' ' + (_typeof(parameters.keyParams) === 'object' ? SDPUtils.writeCryptoKeyParams(parameters.keyParams) : parameters.keyParams) + (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') + '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function (keyParams) {\n if (keyParams.indexOf('inline:') !== 0) {\n return null;\n }\n var parts = keyParams.substr(7).split('|');\n return {\n keyMethod: 'inline',\n keySalt: parts[0],\n lifeTime: parts[1],\n mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n mkiLength: parts[2] ? parts[2].split(':')[1] : undefined\n };\n};\n\nSDPUtils.writeCryptoKeyParams = function (keyParams) {\n return keyParams.keyMethod + ':' + keyParams.keySalt + (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') + (keyParams.mkiValue && keyParams.mkiLength ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength : '');\n};\n\n// Extracts all SDES parameters.\nSDPUtils.getCryptoParameters = function (mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=crypto:');\n return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function (mediaSection, sessionpart) {\n var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-ufrag:')[0];\n var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-pwd:')[0];\n if (!(ufrag && pwd)) {\n return null;\n }\n return {\n usernameFragment: ufrag.substr(12),\n password: pwd.substr(10)\n };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function (params) {\n var sdp = 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' + 'a=ice-pwd:' + params.password + '\\r\\n';\n if (params.iceLite) {\n sdp += 'a=ice-lite\\r\\n';\n }\n return sdp;\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function (mediaSection) {\n var description = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: [],\n rtcp: []\n };\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n for (var i = 3; i < mline.length; i++) {\n // find all codecs from mline[3..]\n var pt = mline[i];\n var rtpmapline = SDPUtils.matchPrefix(mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n if (rtpmapline) {\n var codec = SDPUtils.parseRtpMap(rtpmapline);\n var fmtps = SDPUtils.matchPrefix(mediaSection, 'a=fmtp:' + pt + ' ');\n // Only the first a=fmtp: is considered.\n codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n codec.rtcpFeedback = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-fb:' + pt + ' ').map(SDPUtils.parseRtcpFb);\n description.codecs.push(codec);\n // parse FEC mechanisms from rtpmap lines.\n switch (codec.name.toUpperCase()) {\n case 'RED':\n case 'ULPFEC':\n description.fecMechanisms.push(codec.name.toUpperCase());\n break;\n default:\n // only RED and ULPFEC are recognized as FEC mechanisms.\n break;\n }\n }\n }\n SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function (line) {\n description.headerExtensions.push(SDPUtils.parseExtmap(line));\n });\n // FIXME: parse rtcp.\n return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function (kind, caps) {\n var sdp = '';\n\n // Build the mline.\n sdp += 'm=' + kind + ' ';\n sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n sdp += ' UDP/TLS/RTP/SAVPF ';\n sdp += caps.codecs.map(function (codec) {\n if (codec.preferredPayloadType !== undefined) {\n return codec.preferredPayloadType;\n }\n return codec.payloadType;\n }).join(' ') + '\\r\\n';\n\n sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n caps.codecs.forEach(function (codec) {\n sdp += SDPUtils.writeRtpMap(codec);\n sdp += SDPUtils.writeFmtp(codec);\n sdp += SDPUtils.writeRtcpFb(codec);\n });\n var maxptime = 0;\n caps.codecs.forEach(function (codec) {\n if (codec.maxptime > maxptime) {\n maxptime = codec.maxptime;\n }\n });\n if (maxptime > 0) {\n sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n }\n\n if (caps.headerExtensions) {\n caps.headerExtensions.forEach(function (extension) {\n sdp += SDPUtils.writeExtmap(extension);\n });\n }\n // FIXME: write fecMechanisms.\n return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function (mediaSection) {\n var encodingParameters = [];\n var description = SDPUtils.parseRtpParameters(mediaSection);\n var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n // filter a=ssrc:... cname:, ignore PlanB-msid\n var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) {\n return SDPUtils.parseSsrcMedia(line);\n }).filter(function (parts) {\n return parts.attribute === 'cname';\n });\n var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n var secondarySsrc = void 0;\n\n var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID').map(function (line) {\n var parts = line.substr(17).split(' ');\n return parts.map(function (part) {\n return parseInt(part, 10);\n });\n });\n if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n secondarySsrc = flows[0][1];\n }\n\n description.codecs.forEach(function (codec) {\n if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n var encParam = {\n ssrc: primarySsrc,\n codecPayloadType: parseInt(codec.parameters.apt, 10)\n };\n if (primarySsrc && secondarySsrc) {\n encParam.rtx = { ssrc: secondarySsrc };\n }\n encodingParameters.push(encParam);\n if (hasRed) {\n encParam = JSON.parse(JSON.stringify(encParam));\n encParam.fec = {\n ssrc: primarySsrc,\n mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n };\n encodingParameters.push(encParam);\n }\n }\n });\n if (encodingParameters.length === 0 && primarySsrc) {\n encodingParameters.push({\n ssrc: primarySsrc\n });\n }\n\n // we support both b=AS and b=TIAS but interpret AS as TIAS.\n var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n if (bandwidth.length) {\n if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n bandwidth = parseInt(bandwidth[0].substr(7), 10);\n } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n // use formula from JSEP to convert b=AS to TIAS value.\n bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95 - 50 * 40 * 8;\n } else {\n bandwidth = undefined;\n }\n encodingParameters.forEach(function (params) {\n params.maxBitrate = bandwidth;\n });\n }\n return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function (mediaSection) {\n var rtcpParameters = {};\n\n // Gets the first SSRC. Note that with RTX there might be multiple\n // SSRCs.\n var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) {\n return SDPUtils.parseSsrcMedia(line);\n }).filter(function (obj) {\n return obj.attribute === 'cname';\n })[0];\n if (remoteSsrc) {\n rtcpParameters.cname = remoteSsrc.value;\n rtcpParameters.ssrc = remoteSsrc.ssrc;\n }\n\n // Edge uses the compound attribute instead of reducedSize\n // compound is !reducedSize\n var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n rtcpParameters.reducedSize = rsize.length > 0;\n rtcpParameters.compound = rsize.length === 0;\n\n // parses the rtcp-mux attrіbute.\n // Note that Edge does not support unmuxed RTCP.\n var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n rtcpParameters.mux = mux.length > 0;\n\n return rtcpParameters;\n};\n\nSDPUtils.writeRtcpParameters = function (rtcpParameters) {\n var sdp = '';\n if (rtcpParameters.reducedSize) {\n sdp += 'a=rtcp-rsize\\r\\n';\n }\n if (rtcpParameters.mux) {\n sdp += 'a=rtcp-mux\\r\\n';\n }\n if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) {\n sdp += 'a=ssrc:' + rtcpParameters.ssrc + ' cname:' + rtcpParameters.cname + '\\r\\n';\n }\n return sdp;\n};\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function (mediaSection) {\n var parts = void 0;\n var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n if (spec.length === 1) {\n parts = spec[0].substr(7).split(' ');\n return { stream: parts[0], track: parts[1] };\n }\n var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) {\n return SDPUtils.parseSsrcMedia(line);\n }).filter(function (msidParts) {\n return msidParts.attribute === 'msid';\n });\n if (planB.length > 0) {\n parts = planB[0].value.split(' ');\n return { stream: parts[0], track: parts[1] };\n }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function (mediaSection) {\n var mline = SDPUtils.parseMLine(mediaSection);\n var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n var maxMessageSize = void 0;\n if (maxSizeLine.length > 0) {\n maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);\n }\n if (isNaN(maxMessageSize)) {\n maxMessageSize = 65536;\n }\n var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n if (sctpPort.length > 0) {\n return {\n port: parseInt(sctpPort[0].substr(12), 10),\n protocol: mline.fmt,\n maxMessageSize: maxMessageSize\n };\n }\n var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n if (sctpMapLines.length > 0) {\n var parts = sctpMapLines[0].substr(10).split(' ');\n return {\n port: parseInt(parts[0], 10),\n protocol: parts[1],\n maxMessageSize: maxMessageSize\n };\n }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function (media, sctp) {\n var output = [];\n if (media.protocol !== 'DTLS/SCTP') {\n output = ['m=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n', 'c=IN IP4 0.0.0.0\\r\\n', 'a=sctp-port:' + sctp.port + '\\r\\n'];\n } else {\n output = ['m=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n', 'c=IN IP4 0.0.0.0\\r\\n', 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n'];\n }\n if (sctp.maxMessageSize !== undefined) {\n output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n }\n return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function () {\n return Math.random().toString().substr(2, 21);\n};\n\n// Write boiler plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function (sessId, sessVer, sessUser) {\n var sessionId = void 0;\n var version = sessVer !== undefined ? sessVer : 2;\n if (sessId) {\n sessionId = sessId;\n } else {\n sessionId = SDPUtils.generateSessionId();\n }\n var user = sessUser || 'thisisadapterortc';\n // FIXME: sess-id should be an NTP timestamp.\n return 'v=0\\r\\n' + 'o=' + user + ' ' + sessionId + ' ' + version + ' IN IP4 127.0.0.1\\r\\n' + 's=-\\r\\n' + 't=0 0\\r\\n';\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function (mediaSection, sessionpart) {\n // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n var lines = SDPUtils.splitLines(mediaSection);\n for (var i = 0; i < lines.length; i++) {\n switch (lines[i]) {\n case 'a=sendrecv':\n case 'a=sendonly':\n case 'a=recvonly':\n case 'a=inactive':\n return lines[i].substr(2);\n default:\n // FIXME: What should happen here?\n }\n }\n if (sessionpart) {\n return SDPUtils.getDirection(sessionpart);\n }\n return 'sendrecv';\n};\n\nSDPUtils.getKind = function (mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n return mline[0].substr(2);\n};\n\nSDPUtils.isRejected = function (mediaSection) {\n return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = function (mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var parts = lines[0].substr(2).split(' ');\n return {\n kind: parts[0],\n port: parseInt(parts[1], 10),\n protocol: parts[2],\n fmt: parts.slice(3).join(' ')\n };\n};\n\nSDPUtils.parseOLine = function (mediaSection) {\n var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];\n var parts = line.substr(2).split(' ');\n return {\n username: parts[0],\n sessionId: parts[1],\n sessionVersion: parseInt(parts[2], 10),\n netType: parts[3],\n addressType: parts[4],\n address: parts[5]\n };\n};\n\n// a very naive interpretation of a valid SDP.\nSDPUtils.isValidSDP = function (blob) {\n if (typeof blob !== 'string' || blob.length === 0) {\n return false;\n }\n var lines = SDPUtils.splitLines(blob);\n for (var i = 0; i < lines.length; i++) {\n if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {\n return false;\n }\n // TODO: check the modifier a bit more.\n }\n return true;\n};\n\n// Expose public methods.\nif ((typeof module === 'undefined' ? 'undefined' : _typeof(module)) === 'object') {\n module.exports = SDPUtils;\n}\n},{}]},{},[1])(1)\n});\n"],"file":"adapter.min.js"} \ No newline at end of file diff --git a/lib/amd/src/adapter.js b/lib/amd/src/adapter.js index 46cf0f6eb84..412a149add7 100644 --- a/lib/amd/src/adapter.js +++ b/lib/amd/src/adapter.js @@ -31,7 +31,7 @@ return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof requi var _adapter_factory = require('./adapter_factory.js'); -var adapter = (0, _adapter_factory.adapterFactory)({ window: window }); +var adapter = (0, _adapter_factory.adapterFactory)({ window: typeof window === 'undefined' ? undefined : window }); module.exports = adapter; // this is the difference from adapter_core. },{"./adapter_factory.js":2}],2:[function(require,module,exports){ @@ -50,10 +50,6 @@ var _chrome_shim = require('./chrome/chrome_shim'); var chromeShim = _interopRequireWildcard(_chrome_shim); -var _edge_shim = require('./edge/edge_shim'); - -var edgeShim = _interopRequireWildcard(_edge_shim); - var _firefox_shim = require('./firefox/firefox_shim'); var firefoxShim = _interopRequireWildcard(_firefox_shim); @@ -66,6 +62,10 @@ var _common_shim = require('./common_shim'); var commonShim = _interopRequireWildcard(_common_shim); +var _sdp = require('sdp'); + +var sdp = _interopRequireWildcard(_sdp); + function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } // Shimming starts here. @@ -83,7 +83,6 @@ function adapterFactory() { var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : { shimChrome: true, shimFirefox: true, - shimEdge: true, shimSafari: true }; @@ -96,7 +95,9 @@ function adapterFactory() { commonShim: commonShim, extractVersion: utils.extractVersion, disableLog: utils.disableLog, - disableWarnings: utils.disableWarnings + disableWarnings: utils.disableWarnings, + // Expose sdp as a convenience. For production apps include directly. + sdp: sdp }; // Shim browser if found. @@ -106,25 +107,32 @@ function adapterFactory() { logging('Chrome shim is not included in this adapter release.'); return adapter; } + if (browserDetails.version === null) { + logging('Chrome shim can not determine version, not shimming.'); + return adapter; + } logging('adapter.js shimming chrome.'); // Export to the adapter global object visible in the browser. adapter.browserShim = chromeShim; - chromeShim.shimGetUserMedia(window); - chromeShim.shimMediaStream(window); - chromeShim.shimPeerConnection(window); - chromeShim.shimOnTrack(window); - chromeShim.shimAddTrackRemoveTrack(window); - chromeShim.shimGetSendersWithDtmf(window); - chromeShim.shimGetStats(window); - chromeShim.shimSenderReceiverGetStats(window); - chromeShim.fixNegotiationNeeded(window); + // Must be called before shimPeerConnection. + commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails); - commonShim.shimRTCIceCandidate(window); - commonShim.shimConnectionState(window); - commonShim.shimMaxMessageSize(window); - commonShim.shimSendThrowTypeError(window); - commonShim.removeAllowExtmapMixed(window); + chromeShim.shimGetUserMedia(window, browserDetails); + chromeShim.shimMediaStream(window, browserDetails); + chromeShim.shimPeerConnection(window, browserDetails); + chromeShim.shimOnTrack(window, browserDetails); + chromeShim.shimAddTrackRemoveTrack(window, browserDetails); + chromeShim.shimGetSendersWithDtmf(window, browserDetails); + chromeShim.shimGetStats(window, browserDetails); + chromeShim.shimSenderReceiverGetStats(window, browserDetails); + chromeShim.fixNegotiationNeeded(window, browserDetails); + + commonShim.shimRTCIceCandidate(window, browserDetails); + commonShim.shimConnectionState(window, browserDetails); + commonShim.shimMaxMessageSize(window, browserDetails); + commonShim.shimSendThrowTypeError(window, browserDetails); + commonShim.removeExtmapAllowMixed(window, browserDetails); break; case 'firefox': if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) { @@ -135,40 +143,25 @@ function adapterFactory() { // Export to the adapter global object visible in the browser. adapter.browserShim = firefoxShim; - firefoxShim.shimGetUserMedia(window); - firefoxShim.shimPeerConnection(window); - firefoxShim.shimOnTrack(window); - firefoxShim.shimRemoveStream(window); - firefoxShim.shimSenderGetStats(window); - firefoxShim.shimReceiverGetStats(window); - firefoxShim.shimRTCDataChannel(window); - firefoxShim.shimAddTransceiver(window); - firefoxShim.shimCreateOffer(window); - firefoxShim.shimCreateAnswer(window); + // Must be called before shimPeerConnection. + commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails); - commonShim.shimRTCIceCandidate(window); - commonShim.shimConnectionState(window); - commonShim.shimMaxMessageSize(window); - commonShim.shimSendThrowTypeError(window); - break; - case 'edge': - if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) { - logging('MS edge shim is not included in this adapter release.'); - return adapter; - } - logging('adapter.js shimming edge.'); - // Export to the adapter global object visible in the browser. - adapter.browserShim = edgeShim; + firefoxShim.shimGetUserMedia(window, browserDetails); + firefoxShim.shimPeerConnection(window, browserDetails); + firefoxShim.shimOnTrack(window, browserDetails); + firefoxShim.shimRemoveStream(window, browserDetails); + firefoxShim.shimSenderGetStats(window, browserDetails); + firefoxShim.shimReceiverGetStats(window, browserDetails); + firefoxShim.shimRTCDataChannel(window, browserDetails); + firefoxShim.shimAddTransceiver(window, browserDetails); + firefoxShim.shimGetParameters(window, browserDetails); + firefoxShim.shimCreateOffer(window, browserDetails); + firefoxShim.shimCreateAnswer(window, browserDetails); - edgeShim.shimGetUserMedia(window); - edgeShim.shimGetDisplayMedia(window); - edgeShim.shimPeerConnection(window); - edgeShim.shimReplaceTrack(window); - - // the edge shim implements the full RTCIceCandidate object. - - commonShim.shimMaxMessageSize(window); - commonShim.shimSendThrowTypeError(window); + commonShim.shimRTCIceCandidate(window, browserDetails); + commonShim.shimConnectionState(window, browserDetails); + commonShim.shimMaxMessageSize(window, browserDetails); + commonShim.shimSendThrowTypeError(window, browserDetails); break; case 'safari': if (!safariShim || !options.shimSafari) { @@ -179,18 +172,22 @@ function adapterFactory() { // Export to the adapter global object visible in the browser. adapter.browserShim = safariShim; - safariShim.shimRTCIceServerUrls(window); - safariShim.shimCreateOfferLegacy(window); - safariShim.shimCallbacksAPI(window); - safariShim.shimLocalStreamsAPI(window); - safariShim.shimRemoteStreamsAPI(window); - safariShim.shimTrackEventTransceiver(window); - safariShim.shimGetUserMedia(window); + // Must be called before shimCallbackAPI. + commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails); - commonShim.shimRTCIceCandidate(window); - commonShim.shimMaxMessageSize(window); - commonShim.shimSendThrowTypeError(window); - commonShim.removeAllowExtmapMixed(window); + safariShim.shimRTCIceServerUrls(window, browserDetails); + safariShim.shimCreateOfferLegacy(window, browserDetails); + safariShim.shimCallbacksAPI(window, browserDetails); + safariShim.shimLocalStreamsAPI(window, browserDetails); + safariShim.shimRemoteStreamsAPI(window, browserDetails); + safariShim.shimTrackEventTransceiver(window, browserDetails); + safariShim.shimGetUserMedia(window, browserDetails); + safariShim.shimAudioContext(window, browserDetails); + + commonShim.shimRTCIceCandidate(window, browserDetails); + commonShim.shimMaxMessageSize(window, browserDetails); + commonShim.shimSendThrowTypeError(window, browserDetails); + commonShim.removeExtmapAllowMixed(window, browserDetails); break; default: logging('Unsupported browser!'); @@ -202,8 +199,7 @@ function adapterFactory() { // Browser shims. -},{"./chrome/chrome_shim":3,"./common_shim":6,"./edge/edge_shim":7,"./firefox/firefox_shim":11,"./safari/safari_shim":14,"./utils":15}],3:[function(require,module,exports){ - +},{"./chrome/chrome_shim":3,"./common_shim":6,"./firefox/firefox_shim":7,"./safari/safari_shim":10,"./utils":11,"sdp":12}],3:[function(require,module,exports){ /* * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. * @@ -698,11 +694,10 @@ function shimAddTrackRemoveTrackWithNative(window) { }; } -function shimAddTrackRemoveTrack(window) { +function shimAddTrackRemoveTrack(window, browserDetails) { if (!window.RTCPeerConnection) { return; } - var browserDetails = utils.detectBrowser(window); // shim addTrack and removeTrack. if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) { return shimAddTrackRemoveTrackWithNative(window); @@ -918,9 +913,7 @@ function shimAddTrackRemoveTrack(window) { }; } -function shimPeerConnection(window) { - var browserDetails = utils.detectBrowser(window); - +function shimPeerConnection(window, browserDetails) { if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) { // very basic support for old versions. window.RTCPeerConnection = window.webkitRTCPeerConnection; @@ -940,36 +933,22 @@ function shimPeerConnection(window) { window.RTCPeerConnection.prototype[method] = methodObj[method]; }); } - - // support for addIceCandidate(null or undefined) - var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate; - window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() { - if (!arguments[0]) { - if (arguments[1]) { - arguments[1].apply(null); - } - return Promise.resolve(); - } - // Firefox 68+ emits and processes {candidate: "", ...}, ignore - // in older versions. Native support planned for Chrome M77. - if (browserDetails.version < 78 && arguments[0] && arguments[0].candidate === '') { - return Promise.resolve(); - } - return nativeAddIceCandidate.apply(this, arguments); - }; } -function fixNegotiationNeeded(window) { +// Attempt to fix ONN in plan-b mode. +function fixNegotiationNeeded(window, browserDetails) { utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) { var pc = e.target; - if (pc.signalingState !== 'stable') { - return; + if (browserDetails.version < 72 || pc.getConfiguration && pc.getConfiguration().sdpSemantics === 'plan-b') { + if (pc.signalingState !== 'stable') { + return; + } } return e; }); } -},{"../utils.js":15,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(require,module,exports){ +},{"../utils.js":11,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(require,module,exports){ /* * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved. * @@ -1047,15 +1026,13 @@ function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; var logging = utils.log; -function shimGetUserMedia(window) { +function shimGetUserMedia(window, browserDetails) { var navigator = window && window.navigator; if (!navigator.mediaDevices) { return; } - var browserDetails = utils.detectBrowser(window); - var constraintsToChrome_ = function constraintsToChrome_(c) { if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) !== 'object' || c.mandatory || c.optional) { return c; @@ -1227,7 +1204,7 @@ function shimGetUserMedia(window) { } } -},{"../utils.js":15}],6:[function(require,module,exports){ +},{"../utils.js":11}],6:[function(require,module,exports){ /* * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. * @@ -1248,7 +1225,8 @@ exports.shimRTCIceCandidate = shimRTCIceCandidate; exports.shimMaxMessageSize = shimMaxMessageSize; exports.shimSendThrowTypeError = shimSendThrowTypeError; exports.shimConnectionState = shimConnectionState; -exports.removeAllowExtmapMixed = removeAllowExtmapMixed; +exports.removeExtmapAllowMixed = removeExtmapAllowMixed; +exports.shimAddIceCandidateNullOrEmpty = shimAddIceCandidateNullOrEmpty; var _sdp = require('sdp'); @@ -1311,11 +1289,10 @@ function shimRTCIceCandidate(window) { }); } -function shimMaxMessageSize(window) { +function shimMaxMessageSize(window, browserDetails) { if (!window.RTCPeerConnection) { return; } - var browserDetails = utils.detectBrowser(window); if (!('sctp' in window.RTCPeerConnection.prototype)) { Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', { @@ -1553,274 +1530,69 @@ function shimConnectionState(window) { }); } -function removeAllowExtmapMixed(window) { - /* remove a=extmap-allow-mixed for Chrome < M71 */ +function removeExtmapAllowMixed(window, browserDetails) { + /* remove a=extmap-allow-mixed for webrtc.org < M71 */ if (!window.RTCPeerConnection) { return; } - var browserDetails = utils.detectBrowser(window); if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) { return; } + if (browserDetails.browser === 'safari' && browserDetails.version >= 605) { + return; + } var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription; window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) { if (desc && desc.sdp && desc.sdp.indexOf('\na=extmap-allow-mixed') !== -1) { - desc.sdp = desc.sdp.split('\n').filter(function (line) { + var sdp = desc.sdp.split('\n').filter(function (line) { return line.trim() !== 'a=extmap-allow-mixed'; }).join('\n'); + // Safari enforces read-only-ness of RTCSessionDescription fields. + if (window.RTCSessionDescription && desc instanceof window.RTCSessionDescription) { + arguments[0] = new window.RTCSessionDescription({ + type: desc.type, + sdp: sdp + }); + } else { + desc.sdp = sdp; + } } return nativeSRD.apply(this, arguments); }; } -},{"./utils":15,"sdp":17}],7:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ -/* eslint-env node */ -'use strict'; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined; - -var _getusermedia = require('./getusermedia'); - -Object.defineProperty(exports, 'shimGetUserMedia', { - enumerable: true, - get: function get() { - return _getusermedia.shimGetUserMedia; - } -}); - -var _getdisplaymedia = require('./getdisplaymedia'); - -Object.defineProperty(exports, 'shimGetDisplayMedia', { - enumerable: true, - get: function get() { - return _getdisplaymedia.shimGetDisplayMedia; - } -}); -exports.shimPeerConnection = shimPeerConnection; -exports.shimReplaceTrack = shimReplaceTrack; - -var _utils = require('../utils'); - -var utils = _interopRequireWildcard(_utils); - -var _filtericeservers = require('./filtericeservers'); - -var _rtcpeerconnectionShim = require('rtcpeerconnection-shim'); - -var _rtcpeerconnectionShim2 = _interopRequireDefault(_rtcpeerconnectionShim); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } - -function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } - -function shimPeerConnection(window) { - var browserDetails = utils.detectBrowser(window); - - if (window.RTCIceGatherer) { - if (!window.RTCIceCandidate) { - window.RTCIceCandidate = function RTCIceCandidate(args) { - return args; - }; - } - if (!window.RTCSessionDescription) { - window.RTCSessionDescription = function RTCSessionDescription(args) { - return args; - }; - } - // this adds an additional event listener to MediaStrackTrack that signals - // when a tracks enabled property was changed. Workaround for a bug in - // addStream, see below. No longer required in 15025+ - if (browserDetails.version < 15025) { - var origMSTEnabled = Object.getOwnPropertyDescriptor(window.MediaStreamTrack.prototype, 'enabled'); - Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', { - set: function set(value) { - origMSTEnabled.set.call(this, value); - var ev = new Event('enabled'); - ev.enabled = value; - this.dispatchEvent(ev); - } - }); - } - } - - // ORTC defines the DTMF sender a bit different. - // https://github.com/w3c/ortc/issues/714 - if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) { - Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', { - get: function get() { - if (this._dtmf === undefined) { - if (this.track.kind === 'audio') { - this._dtmf = new window.RTCDtmfSender(this); - } else if (this.track.kind === 'video') { - this._dtmf = null; - } - } - return this._dtmf; - } - }); - } - // Edge currently only implements the RTCDtmfSender, not the - // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2* - if (window.RTCDtmfSender && !window.RTCDTMFSender) { - window.RTCDTMFSender = window.RTCDtmfSender; - } - - var RTCPeerConnectionShim = (0, _rtcpeerconnectionShim2.default)(window, browserDetails.version); - window.RTCPeerConnection = function RTCPeerConnection(config) { - if (config && config.iceServers) { - config.iceServers = (0, _filtericeservers.filterIceServers)(config.iceServers, browserDetails.version); - utils.log('ICE servers after filtering:', config.iceServers); - } - return new RTCPeerConnectionShim(config); - }; - window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype; -} - -function shimReplaceTrack(window) { - // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614 - if (window.RTCRtpSender && !('replaceTrack' in window.RTCRtpSender.prototype)) { - window.RTCRtpSender.prototype.replaceTrack = window.RTCRtpSender.prototype.setTrack; - } -} - -},{"../utils":15,"./filtericeservers":8,"./getdisplaymedia":9,"./getusermedia":10,"rtcpeerconnection-shim":16}],8:[function(require,module,exports){ -/* - * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ -/* eslint-env node */ -'use strict'; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.filterIceServers = filterIceServers; - -var _utils = require('../utils'); - -var utils = _interopRequireWildcard(_utils); - -function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } - -// Edge does not like -// 1) stun: filtered after 14393 unless ?transport=udp is present -// 2) turn: that does not have all of turn:host:port?transport=udp -// 3) turn: with ipv6 addresses -// 4) turn: occurring muliple times -function filterIceServers(iceServers, edgeVersion) { - var hasTurn = false; - iceServers = JSON.parse(JSON.stringify(iceServers)); - return iceServers.filter(function (server) { - if (server && (server.urls || server.url)) { - var urls = server.urls || server.url; - if (server.url && !server.urls) { - utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls'); - } - var isString = typeof urls === 'string'; - if (isString) { - urls = [urls]; - } - urls = urls.filter(function (url) { - // filter STUN unconditionally. - if (url.indexOf('stun:') === 0) { - return false; - } - - var validTurn = url.startsWith('turn') && !url.startsWith('turn:[') && url.includes('transport=udp'); - if (validTurn && !hasTurn) { - hasTurn = true; - return true; - } - return validTurn && !hasTurn; - }); - - delete server.url; - server.urls = isString ? urls[0] : urls; - return !!urls.length; - } - }); -} - -},{"../utils":15}],9:[function(require,module,exports){ -/* - * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ -/* eslint-env node */ -'use strict'; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.shimGetDisplayMedia = shimGetDisplayMedia; -function shimGetDisplayMedia(window) { - if (!('getDisplayMedia' in window.navigator)) { +function shimAddIceCandidateNullOrEmpty(window, browserDetails) { + // Support for addIceCandidate(null or undefined) + // as well as addIceCandidate({candidate: "", ...}) + // https://bugs.chromium.org/p/chromium/issues/detail?id=978582 + // Note: must be called before other polyfills which change the signature. + if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) { return; } - if (!window.navigator.mediaDevices) { + var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate; + if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) { return; } - if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) { - return; - } - window.navigator.mediaDevices.getDisplayMedia = window.navigator.getDisplayMedia.bind(window.navigator); -} - -},{}],10:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ -/* eslint-env node */ -'use strict'; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.shimGetUserMedia = shimGetUserMedia; -function shimGetUserMedia(window) { - var navigator = window && window.navigator; - - var shimError_ = function shimError_(e) { - return { - name: { PermissionDeniedError: 'NotAllowedError' }[e.name] || e.name, - message: e.message, - constraint: e.constraint, - toString: function toString() { - return this.name; + window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() { + if (!arguments[0]) { + if (arguments[1]) { + arguments[1].apply(null); } - }; - }; - - // getUserMedia error shim. - var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices); - navigator.mediaDevices.getUserMedia = function (c) { - return origGetUserMedia(c).catch(function (e) { - return Promise.reject(shimError_(e)); - }); + return Promise.resolve(); + } + // Firefox 68+ emits and processes {candidate: "", ...}, ignore + // in older versions. + // Native support for ignoring exists for Chrome M77+. + // Safari ignores as well, exact version unknown but works in the same + // version that also ignores addIceCandidate(null). + if ((browserDetails.browser === 'chrome' && browserDetails.version < 78 || browserDetails.browser === 'firefox' && browserDetails.version < 68 || browserDetails.browser === 'safari') && arguments[0] && arguments[0].candidate === '') { + return Promise.resolve(); + } + return nativeAddIceCandidate.apply(this, arguments); }; } -},{}],11:[function(require,module,exports){ +},{"./utils":11,"sdp":12}],7:[function(require,module,exports){ /* * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. * @@ -1862,6 +1634,7 @@ exports.shimReceiverGetStats = shimReceiverGetStats; exports.shimRemoveStream = shimRemoveStream; exports.shimRTCDataChannel = shimRTCDataChannel; exports.shimAddTransceiver = shimAddTransceiver; +exports.shimGetParameters = shimGetParameters; exports.shimCreateOffer = shimCreateOffer; exports.shimCreateAnswer = shimCreateAnswer; @@ -1883,9 +1656,7 @@ function shimOnTrack(window) { } } -function shimPeerConnection(window) { - var browserDetails = utils.detectBrowser(window); - +function shimPeerConnection(window, browserDetails) { if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) { return; // probably media.peerconnection.enabled=false in about:config } @@ -1906,26 +1677,6 @@ function shimPeerConnection(window) { }); } - // support for addIceCandidate(null or undefined) - // as well as ignoring {sdpMid, candidate: ""} - if (browserDetails.version < 68) { - var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate; - window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() { - if (!arguments[0]) { - if (arguments[1]) { - arguments[1].apply(null); - } - return Promise.resolve(); - } - // Firefox 68+ emits and processes {candidate: "", ...}, ignore - // in older versions. - if (arguments[0] && arguments[0].candidate === '') { - return Promise.resolve(); - } - return nativeAddIceCandidate.apply(this, arguments); - }; - } - var modernStatsTypes = { inboundrtp: 'inbound-rtp', outboundrtp: 'outbound-rtp', @@ -2097,9 +1848,16 @@ function shimAddTransceiver(window) { var sender = transceiver.sender; var params = sender.getParameters(); - if (!('encodings' in params)) { + if (!('encodings' in params) || + // Avoid being fooled by patched getParameters() below. + params.encodings.length === 1 && Object.keys(params.encodings[0]).length === 0) { params.encodings = initParameters.sendEncodings; - this.setParametersPromises.push(sender.setParameters(params).catch(function () {})); + sender.sendEncodings = initParameters.sendEncodings; + this.setParametersPromises.push(sender.setParameters(params).then(function () { + delete sender.sendEncodings; + }).catch(function () { + delete sender.sendEncodings; + })); } } return transceiver; @@ -2107,6 +1865,22 @@ function shimAddTransceiver(window) { } } +function shimGetParameters(window) { + if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCRtpSender)) { + return; + } + var origGetParameters = window.RTCRtpSender.prototype.getParameters; + if (origGetParameters) { + window.RTCRtpSender.prototype.getParameters = function getParameters() { + var params = origGetParameters.apply(this, arguments); + if (!('encodings' in params)) { + params.encodings = [].concat(this.sendEncodings || [{}]); + } + return params; + }; + } +} + function shimCreateOffer(window) { // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647 // Firefox ignores the init sendEncodings options passed to addTransceiver @@ -2153,7 +1927,7 @@ function shimCreateAnswer(window) { }; } -},{"../utils":15,"./getdisplaymedia":12,"./getusermedia":13}],12:[function(require,module,exports){ +},{"../utils":11,"./getdisplaymedia":8,"./getusermedia":9}],8:[function(require,module,exports){ /* * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved. * @@ -2192,7 +1966,7 @@ function shimGetDisplayMedia(window, preferredMediaSource) { }; } -},{}],13:[function(require,module,exports){ +},{}],9:[function(require,module,exports){ /* * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. * @@ -2217,8 +1991,7 @@ var utils = _interopRequireWildcard(_utils); function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } -function shimGetUserMedia(window) { - var browserDetails = utils.detectBrowser(window); +function shimGetUserMedia(window, browserDetails) { var navigator = window && window.navigator; var MediaStreamTrack = window && window.MediaStreamTrack; @@ -2270,7 +2043,7 @@ function shimGetUserMedia(window) { } } -},{"../utils":15}],14:[function(require,module,exports){ +},{"../utils":11}],10:[function(require,module,exports){ /* * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. * @@ -2294,6 +2067,7 @@ exports.shimConstraints = shimConstraints; exports.shimRTCIceServerUrls = shimRTCIceServerUrls; exports.shimTrackEventTransceiver = shimTrackEventTransceiver; exports.shimCreateOfferLegacy = shimCreateOfferLegacy; +exports.shimAudioContext = shimAudioContext; var _utils = require('../utils'); @@ -2335,20 +2109,27 @@ function shimLocalStreamsAPI(window) { }; window.RTCPeerConnection.prototype.addTrack = function addTrack(track) { - var stream = arguments[1]; - if (stream) { - if (!this._localStreams) { - this._localStreams = [stream]; - } else if (!this._localStreams.includes(stream)) { - this._localStreams.push(stream); - } + var _this2 = this; + + for (var _len = arguments.length, streams = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + streams[_key - 1] = arguments[_key]; + } + + if (streams) { + streams.forEach(function (stream) { + if (!_this2._localStreams) { + _this2._localStreams = [stream]; + } else if (!_this2._localStreams.includes(stream)) { + _this2._localStreams.push(stream); + } + }); } return _addTrack.apply(this, arguments); }; } if (!('removeStream' in window.RTCPeerConnection.prototype)) { window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { - var _this2 = this; + var _this3 = this; if (!this._localStreams) { this._localStreams = []; @@ -2361,7 +2142,7 @@ function shimLocalStreamsAPI(window) { var tracks = stream.getTracks(); this.getSenders().forEach(function (sender) { if (tracks.includes(sender.track)) { - _this2.removeTrack(sender); + _this3.removeTrack(sender); } }); }; @@ -2383,7 +2164,7 @@ function shimRemoteStreamsAPI(window) { return this._onaddstream; }, set: function set(f) { - var _this3 = this; + var _this4 = this; if (this._onaddstream) { this.removeEventListener('addstream', this._onaddstream); @@ -2392,16 +2173,16 @@ function shimRemoteStreamsAPI(window) { this.addEventListener('addstream', this._onaddstream = f); this.addEventListener('track', this._onaddstreampoly = function (e) { e.streams.forEach(function (stream) { - if (!_this3._remoteStreams) { - _this3._remoteStreams = []; + if (!_this4._remoteStreams) { + _this4._remoteStreams = []; } - if (_this3._remoteStreams.includes(stream)) { + if (_this4._remoteStreams.includes(stream)) { return; } - _this3._remoteStreams.push(stream); + _this4._remoteStreams.push(stream); var event = new Event('addstream'); event.stream = stream; - _this3.dispatchEvent(event); + _this4.dispatchEvent(event); }); }); } @@ -2520,6 +2301,9 @@ function shimConstraints(constraints) { } function shimRTCIceServerUrls(window) { + if (!window.RTCPeerConnection) { + return; + } // migrate from non-spec RTCIceServer.url to RTCIceServer.urls var OrigPeerConnection = window.RTCPeerConnection; window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) { @@ -2543,7 +2327,7 @@ function shimRTCIceServerUrls(window) { }; window.RTCPeerConnection.prototype = OrigPeerConnection.prototype; // wrap static methods. Currently just generateCertificate. - if ('generateCertificate' in window.RTCPeerConnection) { + if ('generateCertificate' in OrigPeerConnection) { Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { get: function get() { return OrigPeerConnection.generateCertificate; @@ -2621,7 +2405,14 @@ function shimCreateOfferLegacy(window) { }; } -},{"../utils":15}],15:[function(require,module,exports){ +function shimAudioContext(window) { + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || window.AudioContext) { + return; + } + window.AudioContext = window.webkitAudioContext; +} + +},{"../utils":11}],11:[function(require,module,exports){ /* * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. * @@ -2683,21 +2474,37 @@ function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) { var wrappedCallback = function wrappedCallback(e) { var modifiedEvent = wrapper(e); if (modifiedEvent) { - cb(modifiedEvent); + if (cb.handleEvent) { + cb.handleEvent(modifiedEvent); + } else { + cb(modifiedEvent); + } } }; this._eventMap = this._eventMap || {}; - this._eventMap[cb] = wrappedCallback; + if (!this._eventMap[eventNameToWrap]) { + this._eventMap[eventNameToWrap] = new Map(); + } + this._eventMap[eventNameToWrap].set(cb, wrappedCallback); return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]); }; var nativeRemoveEventListener = proto.removeEventListener; proto.removeEventListener = function (nativeEventName, cb) { - if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[cb]) { + if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[eventNameToWrap]) { return nativeRemoveEventListener.apply(this, arguments); } - var unwrappedCb = this._eventMap[cb]; - delete this._eventMap[cb]; + if (!this._eventMap[eventNameToWrap].has(cb)) { + return nativeRemoveEventListener.apply(this, arguments); + } + var unwrappedCb = this._eventMap[eventNameToWrap].get(cb); + this._eventMap[eventNameToWrap].delete(cb); + if (this._eventMap[eventNameToWrap].size === 0) { + delete this._eventMap[eventNameToWrap]; + } + if (Object.keys(this._eventMap).length === 0) { + delete this._eventMap; + } return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]); }; @@ -2768,10 +2575,7 @@ function deprecated(oldMethod, newMethod) { * properties. */ function detectBrowser(window) { - var navigator = window.navigator; - // Returned result object. - var result = { browser: null, version: null }; // Fail early if it's not a browser @@ -2780,6 +2584,9 @@ function detectBrowser(window) { return result; } + var navigator = window.navigator; + + if (navigator.mozGetUserMedia) { // Firefox. result.browser = 'firefox'; @@ -2791,10 +2598,6 @@ function detectBrowser(window) { // more complicated fallback to webkitRTCPeerConnection. result.browser = 'chrome'; result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\/(\d+)\./, 2); - } else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { - // Edge. - result.browser = 'edge'; - result.version = extractVersion(navigator.userAgent, /Edge\/(\d+).(\d+)$/, 2); } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) { // Safari. result.browser = 'safari'; @@ -2880,1875 +2683,19 @@ function filterStats(result, track, outbound) { return filteredResult; } -},{}],16:[function(require,module,exports){ -/* - * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ - /* eslint-env node */ -'use strict'; - -var SDPUtils = require('sdp'); - -function fixStatsType(stat) { - return { - inboundrtp: 'inbound-rtp', - outboundrtp: 'outbound-rtp', - candidatepair: 'candidate-pair', - localcandidate: 'local-candidate', - remotecandidate: 'remote-candidate' - }[stat.type] || stat.type; -} - -function writeMediaSection(transceiver, caps, type, stream, dtlsRole) { - var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); - - // Map ICE parameters (ufrag, pwd) to SDP. - sdp += SDPUtils.writeIceParameters( - transceiver.iceGatherer.getLocalParameters()); - - // Map DTLS parameters to SDP. - sdp += SDPUtils.writeDtlsParameters( - transceiver.dtlsTransport.getLocalParameters(), - type === 'offer' ? 'actpass' : dtlsRole || 'active'); - - sdp += 'a=mid:' + transceiver.mid + '\r\n'; - - if (transceiver.rtpSender && transceiver.rtpReceiver) { - sdp += 'a=sendrecv\r\n'; - } else if (transceiver.rtpSender) { - sdp += 'a=sendonly\r\n'; - } else if (transceiver.rtpReceiver) { - sdp += 'a=recvonly\r\n'; - } else { - sdp += 'a=inactive\r\n'; - } - - if (transceiver.rtpSender) { - var trackId = transceiver.rtpSender._initialTrackId || - transceiver.rtpSender.track.id; - transceiver.rtpSender._initialTrackId = trackId; - // spec. - var msid = 'msid:' + (stream ? stream.id : '-') + ' ' + - trackId + '\r\n'; - sdp += 'a=' + msid; - // for Chrome. Legacy should no longer be required. - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + - ' ' + msid; - - // RTX - if (transceiver.sendEncodingParameters[0].rtx) { - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + - ' ' + msid; - sdp += 'a=ssrc-group:FID ' + - transceiver.sendEncodingParameters[0].ssrc + ' ' + - transceiver.sendEncodingParameters[0].rtx.ssrc + - '\r\n'; - } - } - // FIXME: this should be written by writeRtpDescription. - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + - ' cname:' + SDPUtils.localCName + '\r\n'; - if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + - ' cname:' + SDPUtils.localCName + '\r\n'; - } - return sdp; -} - -// Edge does not like -// 1) stun: filtered after 14393 unless ?transport=udp is present -// 2) turn: that does not have all of turn:host:port?transport=udp -// 3) turn: with ipv6 addresses -// 4) turn: occurring muliple times -function filterIceServers(iceServers, edgeVersion) { - var hasTurn = false; - iceServers = JSON.parse(JSON.stringify(iceServers)); - return iceServers.filter(function(server) { - if (server && (server.urls || server.url)) { - var urls = server.urls || server.url; - if (server.url && !server.urls) { - console.warn('RTCIceServer.url is deprecated! Use urls instead.'); - } - var isString = typeof urls === 'string'; - if (isString) { - urls = [urls]; - } - urls = urls.filter(function(url) { - var validTurn = url.indexOf('turn:') === 0 && - url.indexOf('transport=udp') !== -1 && - url.indexOf('turn:[') === -1 && - !hasTurn; - - if (validTurn) { - hasTurn = true; - return true; - } - return url.indexOf('stun:') === 0 && edgeVersion >= 14393 && - url.indexOf('?transport=udp') === -1; - }); - - delete server.url; - server.urls = isString ? urls[0] : urls; - return !!urls.length; - } - }); -} - -// Determines the intersection of local and remote capabilities. -function getCommonCapabilities(localCapabilities, remoteCapabilities) { - var commonCapabilities = { - codecs: [], - headerExtensions: [], - fecMechanisms: [] - }; - - var findCodecByPayloadType = function(pt, codecs) { - pt = parseInt(pt, 10); - for (var i = 0; i < codecs.length; i++) { - if (codecs[i].payloadType === pt || - codecs[i].preferredPayloadType === pt) { - return codecs[i]; - } - } - }; - - var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) { - var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs); - var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs); - return lCodec && rCodec && - lCodec.name.toLowerCase() === rCodec.name.toLowerCase(); - }; - - localCapabilities.codecs.forEach(function(lCodec) { - for (var i = 0; i < remoteCapabilities.codecs.length; i++) { - var rCodec = remoteCapabilities.codecs[i]; - if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && - lCodec.clockRate === rCodec.clockRate) { - if (lCodec.name.toLowerCase() === 'rtx' && - lCodec.parameters && rCodec.parameters.apt) { - // for RTX we need to find the local rtx that has a apt - // which points to the same local codec as the remote one. - if (!rtxCapabilityMatches(lCodec, rCodec, - localCapabilities.codecs, remoteCapabilities.codecs)) { - continue; - } - } - rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy - // number of channels is the highest common number of channels - rCodec.numChannels = Math.min(lCodec.numChannels, - rCodec.numChannels); - // push rCodec so we reply with offerer payload type - commonCapabilities.codecs.push(rCodec); - - // determine common feedback mechanisms - rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) { - for (var j = 0; j < lCodec.rtcpFeedback.length; j++) { - if (lCodec.rtcpFeedback[j].type === fb.type && - lCodec.rtcpFeedback[j].parameter === fb.parameter) { - return true; - } - } - return false; - }); - // FIXME: also need to determine .parameters - // see https://github.com/openpeer/ortc/issues/569 - break; - } - } - }); - - localCapabilities.headerExtensions.forEach(function(lHeaderExtension) { - for (var i = 0; i < remoteCapabilities.headerExtensions.length; - i++) { - var rHeaderExtension = remoteCapabilities.headerExtensions[i]; - if (lHeaderExtension.uri === rHeaderExtension.uri) { - commonCapabilities.headerExtensions.push(rHeaderExtension); - break; - } - } - }); - - // FIXME: fecMechanisms - return commonCapabilities; -} - -// is action=setLocalDescription with type allowed in signalingState -function isActionAllowedInSignalingState(action, type, signalingState) { - return { - offer: { - setLocalDescription: ['stable', 'have-local-offer'], - setRemoteDescription: ['stable', 'have-remote-offer'] - }, - answer: { - setLocalDescription: ['have-remote-offer', 'have-local-pranswer'], - setRemoteDescription: ['have-local-offer', 'have-remote-pranswer'] - } - }[type][action].indexOf(signalingState) !== -1; -} - -function maybeAddCandidate(iceTransport, candidate) { - // Edge's internal representation adds some fields therefore - // not all fieldѕ are taken into account. - var alreadyAdded = iceTransport.getRemoteCandidates() - .find(function(remoteCandidate) { - return candidate.foundation === remoteCandidate.foundation && - candidate.ip === remoteCandidate.ip && - candidate.port === remoteCandidate.port && - candidate.priority === remoteCandidate.priority && - candidate.protocol === remoteCandidate.protocol && - candidate.type === remoteCandidate.type; - }); - if (!alreadyAdded) { - iceTransport.addRemoteCandidate(candidate); - } - return !alreadyAdded; -} - - -function makeError(name, description) { - var e = new Error(description); - e.name = name; - // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names - e.code = { - NotSupportedError: 9, - InvalidStateError: 11, - InvalidAccessError: 15, - TypeError: undefined, - OperationError: undefined - }[name]; - return e; -} - -module.exports = function(window, edgeVersion) { - // https://w3c.github.io/mediacapture-main/#mediastream - // Helper function to add the track to the stream and - // dispatch the event ourselves. - function addTrackToStreamAndFireEvent(track, stream) { - stream.addTrack(track); - stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack', - {track: track})); - } - - function removeTrackFromStreamAndFireEvent(track, stream) { - stream.removeTrack(track); - stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack', - {track: track})); - } - - function fireAddTrack(pc, track, receiver, streams) { - var trackEvent = new Event('track'); - trackEvent.track = track; - trackEvent.receiver = receiver; - trackEvent.transceiver = {receiver: receiver}; - trackEvent.streams = streams; - window.setTimeout(function() { - pc._dispatchEvent('track', trackEvent); - }); - } - - var RTCPeerConnection = function(config) { - var pc = this; - - var _eventTarget = document.createDocumentFragment(); - ['addEventListener', 'removeEventListener', 'dispatchEvent'] - .forEach(function(method) { - pc[method] = _eventTarget[method].bind(_eventTarget); - }); - - this.canTrickleIceCandidates = null; - - this.needNegotiation = false; - - this.localStreams = []; - this.remoteStreams = []; - - this._localDescription = null; - this._remoteDescription = null; - - this.signalingState = 'stable'; - this.iceConnectionState = 'new'; - this.connectionState = 'new'; - this.iceGatheringState = 'new'; - - config = JSON.parse(JSON.stringify(config || {})); - - this.usingBundle = config.bundlePolicy === 'max-bundle'; - if (config.rtcpMuxPolicy === 'negotiate') { - throw(makeError('NotSupportedError', - 'rtcpMuxPolicy \'negotiate\' is not supported')); - } else if (!config.rtcpMuxPolicy) { - config.rtcpMuxPolicy = 'require'; - } - - switch (config.iceTransportPolicy) { - case 'all': - case 'relay': - break; - default: - config.iceTransportPolicy = 'all'; - break; - } - - switch (config.bundlePolicy) { - case 'balanced': - case 'max-compat': - case 'max-bundle': - break; - default: - config.bundlePolicy = 'balanced'; - break; - } - - config.iceServers = filterIceServers(config.iceServers || [], edgeVersion); - - this._iceGatherers = []; - if (config.iceCandidatePoolSize) { - for (var i = config.iceCandidatePoolSize; i > 0; i--) { - this._iceGatherers.push(new window.RTCIceGatherer({ - iceServers: config.iceServers, - gatherPolicy: config.iceTransportPolicy - })); - } - } else { - config.iceCandidatePoolSize = 0; - } - - this._config = config; - - // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ... - // everything that is needed to describe a SDP m-line. - this.transceivers = []; - - this._sdpSessionId = SDPUtils.generateSessionId(); - this._sdpSessionVersion = 0; - - this._dtlsRole = undefined; // role for a=setup to use in answers. - - this._isClosed = false; - }; - - Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', { - configurable: true, - get: function() { - return this._localDescription; - } - }); - Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', { - configurable: true, - get: function() { - return this._remoteDescription; - } - }); - - // set up event handlers on prototype - RTCPeerConnection.prototype.onicecandidate = null; - RTCPeerConnection.prototype.onaddstream = null; - RTCPeerConnection.prototype.ontrack = null; - RTCPeerConnection.prototype.onremovestream = null; - RTCPeerConnection.prototype.onsignalingstatechange = null; - RTCPeerConnection.prototype.oniceconnectionstatechange = null; - RTCPeerConnection.prototype.onconnectionstatechange = null; - RTCPeerConnection.prototype.onicegatheringstatechange = null; - RTCPeerConnection.prototype.onnegotiationneeded = null; - RTCPeerConnection.prototype.ondatachannel = null; - - RTCPeerConnection.prototype._dispatchEvent = function(name, event) { - if (this._isClosed) { - return; - } - this.dispatchEvent(event); - if (typeof this['on' + name] === 'function') { - this['on' + name](event); - } - }; - - RTCPeerConnection.prototype._emitGatheringStateChange = function() { - var event = new Event('icegatheringstatechange'); - this._dispatchEvent('icegatheringstatechange', event); - }; - - RTCPeerConnection.prototype.getConfiguration = function() { - return this._config; - }; - - RTCPeerConnection.prototype.getLocalStreams = function() { - return this.localStreams; - }; - - RTCPeerConnection.prototype.getRemoteStreams = function() { - return this.remoteStreams; - }; - - // internal helper to create a transceiver object. - // (which is not yet the same as the WebRTC 1.0 transceiver) - RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) { - var hasBundleTransport = this.transceivers.length > 0; - var transceiver = { - track: null, - iceGatherer: null, - iceTransport: null, - dtlsTransport: null, - localCapabilities: null, - remoteCapabilities: null, - rtpSender: null, - rtpReceiver: null, - kind: kind, - mid: null, - sendEncodingParameters: null, - recvEncodingParameters: null, - stream: null, - associatedRemoteMediaStreams: [], - wantReceive: true - }; - if (this.usingBundle && hasBundleTransport) { - transceiver.iceTransport = this.transceivers[0].iceTransport; - transceiver.dtlsTransport = this.transceivers[0].dtlsTransport; - } else { - var transports = this._createIceAndDtlsTransports(); - transceiver.iceTransport = transports.iceTransport; - transceiver.dtlsTransport = transports.dtlsTransport; - } - if (!doNotAdd) { - this.transceivers.push(transceiver); - } - return transceiver; - }; - - RTCPeerConnection.prototype.addTrack = function(track, stream) { - if (this._isClosed) { - throw makeError('InvalidStateError', - 'Attempted to call addTrack on a closed peerconnection.'); - } - - var alreadyExists = this.transceivers.find(function(s) { - return s.track === track; - }); - - if (alreadyExists) { - throw makeError('InvalidAccessError', 'Track already exists.'); - } - - var transceiver; - for (var i = 0; i < this.transceivers.length; i++) { - if (!this.transceivers[i].track && - this.transceivers[i].kind === track.kind) { - transceiver = this.transceivers[i]; - } - } - if (!transceiver) { - transceiver = this._createTransceiver(track.kind); - } - - this._maybeFireNegotiationNeeded(); - - if (this.localStreams.indexOf(stream) === -1) { - this.localStreams.push(stream); - } - - transceiver.track = track; - transceiver.stream = stream; - transceiver.rtpSender = new window.RTCRtpSender(track, - transceiver.dtlsTransport); - return transceiver.rtpSender; - }; - - RTCPeerConnection.prototype.addStream = function(stream) { - var pc = this; - if (edgeVersion >= 15025) { - stream.getTracks().forEach(function(track) { - pc.addTrack(track, stream); - }); - } else { - // Clone is necessary for local demos mostly, attaching directly - // to two different senders does not work (build 10547). - // Fixed in 15025 (or earlier) - var clonedStream = stream.clone(); - stream.getTracks().forEach(function(track, idx) { - var clonedTrack = clonedStream.getTracks()[idx]; - track.addEventListener('enabled', function(event) { - clonedTrack.enabled = event.enabled; - }); - }); - clonedStream.getTracks().forEach(function(track) { - pc.addTrack(track, clonedStream); - }); - } - }; - - RTCPeerConnection.prototype.removeTrack = function(sender) { - if (this._isClosed) { - throw makeError('InvalidStateError', - 'Attempted to call removeTrack on a closed peerconnection.'); - } - - if (!(sender instanceof window.RTCRtpSender)) { - throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' + - 'does not implement interface RTCRtpSender.'); - } - - var transceiver = this.transceivers.find(function(t) { - return t.rtpSender === sender; - }); - - if (!transceiver) { - throw makeError('InvalidAccessError', - 'Sender was not created by this connection.'); - } - var stream = transceiver.stream; - - transceiver.rtpSender.stop(); - transceiver.rtpSender = null; - transceiver.track = null; - transceiver.stream = null; - - // remove the stream from the set of local streams - var localStreams = this.transceivers.map(function(t) { - return t.stream; - }); - if (localStreams.indexOf(stream) === -1 && - this.localStreams.indexOf(stream) > -1) { - this.localStreams.splice(this.localStreams.indexOf(stream), 1); - } - - this._maybeFireNegotiationNeeded(); - }; - - RTCPeerConnection.prototype.removeStream = function(stream) { - var pc = this; - stream.getTracks().forEach(function(track) { - var sender = pc.getSenders().find(function(s) { - return s.track === track; - }); - if (sender) { - pc.removeTrack(sender); - } - }); - }; - - RTCPeerConnection.prototype.getSenders = function() { - return this.transceivers.filter(function(transceiver) { - return !!transceiver.rtpSender; - }) - .map(function(transceiver) { - return transceiver.rtpSender; - }); - }; - - RTCPeerConnection.prototype.getReceivers = function() { - return this.transceivers.filter(function(transceiver) { - return !!transceiver.rtpReceiver; - }) - .map(function(transceiver) { - return transceiver.rtpReceiver; - }); - }; - - - RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex, - usingBundle) { - var pc = this; - if (usingBundle && sdpMLineIndex > 0) { - return this.transceivers[0].iceGatherer; - } else if (this._iceGatherers.length) { - return this._iceGatherers.shift(); - } - var iceGatherer = new window.RTCIceGatherer({ - iceServers: this._config.iceServers, - gatherPolicy: this._config.iceTransportPolicy - }); - Object.defineProperty(iceGatherer, 'state', - {value: 'new', writable: true} - ); - - this.transceivers[sdpMLineIndex].bufferedCandidateEvents = []; - this.transceivers[sdpMLineIndex].bufferCandidates = function(event) { - var end = !event.candidate || Object.keys(event.candidate).length === 0; - // polyfill since RTCIceGatherer.state is not implemented in - // Edge 10547 yet. - iceGatherer.state = end ? 'completed' : 'gathering'; - if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) { - pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event); - } - }; - iceGatherer.addEventListener('localcandidate', - this.transceivers[sdpMLineIndex].bufferCandidates); - return iceGatherer; - }; - - // start gathering from an RTCIceGatherer. - RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) { - var pc = this; - var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; - if (iceGatherer.onlocalcandidate) { - return; - } - var bufferedCandidateEvents = - this.transceivers[sdpMLineIndex].bufferedCandidateEvents; - this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null; - iceGatherer.removeEventListener('localcandidate', - this.transceivers[sdpMLineIndex].bufferCandidates); - iceGatherer.onlocalcandidate = function(evt) { - if (pc.usingBundle && sdpMLineIndex > 0) { - // if we know that we use bundle we can drop candidates with - // ѕdpMLineIndex > 0. If we don't do this then our state gets - // confused since we dispose the extra ice gatherer. - return; - } - var event = new Event('icecandidate'); - event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex}; - - var cand = evt.candidate; - // Edge emits an empty object for RTCIceCandidateComplete‥ - var end = !cand || Object.keys(cand).length === 0; - if (end) { - // polyfill since RTCIceGatherer.state is not implemented in - // Edge 10547 yet. - if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') { - iceGatherer.state = 'completed'; - } - } else { - if (iceGatherer.state === 'new') { - iceGatherer.state = 'gathering'; - } - // RTCIceCandidate doesn't have a component, needs to be added - cand.component = 1; - // also the usernameFragment. TODO: update SDP to take both variants. - cand.ufrag = iceGatherer.getLocalParameters().usernameFragment; - - var serializedCandidate = SDPUtils.writeCandidate(cand); - event.candidate = Object.assign(event.candidate, - SDPUtils.parseCandidate(serializedCandidate)); - - event.candidate.candidate = serializedCandidate; - event.candidate.toJSON = function() { - return { - candidate: event.candidate.candidate, - sdpMid: event.candidate.sdpMid, - sdpMLineIndex: event.candidate.sdpMLineIndex, - usernameFragment: event.candidate.usernameFragment - }; - }; - } - - // update local description. - var sections = SDPUtils.getMediaSections(pc._localDescription.sdp); - if (!end) { - sections[event.candidate.sdpMLineIndex] += - 'a=' + event.candidate.candidate + '\r\n'; - } else { - sections[event.candidate.sdpMLineIndex] += - 'a=end-of-candidates\r\n'; - } - pc._localDescription.sdp = - SDPUtils.getDescription(pc._localDescription.sdp) + - sections.join(''); - var complete = pc.transceivers.every(function(transceiver) { - return transceiver.iceGatherer && - transceiver.iceGatherer.state === 'completed'; - }); - - if (pc.iceGatheringState !== 'gathering') { - pc.iceGatheringState = 'gathering'; - pc._emitGatheringStateChange(); - } - - // Emit candidate. Also emit null candidate when all gatherers are - // complete. - if (!end) { - pc._dispatchEvent('icecandidate', event); - } - if (complete) { - pc._dispatchEvent('icecandidate', new Event('icecandidate')); - pc.iceGatheringState = 'complete'; - pc._emitGatheringStateChange(); - } - }; - - // emit already gathered candidates. - window.setTimeout(function() { - bufferedCandidateEvents.forEach(function(e) { - iceGatherer.onlocalcandidate(e); - }); - }, 0); - }; - - // Create ICE transport and DTLS transport. - RTCPeerConnection.prototype._createIceAndDtlsTransports = function() { - var pc = this; - var iceTransport = new window.RTCIceTransport(null); - iceTransport.onicestatechange = function() { - pc._updateIceConnectionState(); - pc._updateConnectionState(); - }; - - var dtlsTransport = new window.RTCDtlsTransport(iceTransport); - dtlsTransport.ondtlsstatechange = function() { - pc._updateConnectionState(); - }; - dtlsTransport.onerror = function() { - // onerror does not set state to failed by itself. - Object.defineProperty(dtlsTransport, 'state', - {value: 'failed', writable: true}); - pc._updateConnectionState(); - }; - - return { - iceTransport: iceTransport, - dtlsTransport: dtlsTransport - }; - }; - - // Destroy ICE gatherer, ICE transport and DTLS transport. - // Without triggering the callbacks. - RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function( - sdpMLineIndex) { - var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; - if (iceGatherer) { - delete iceGatherer.onlocalcandidate; - delete this.transceivers[sdpMLineIndex].iceGatherer; - } - var iceTransport = this.transceivers[sdpMLineIndex].iceTransport; - if (iceTransport) { - delete iceTransport.onicestatechange; - delete this.transceivers[sdpMLineIndex].iceTransport; - } - var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport; - if (dtlsTransport) { - delete dtlsTransport.ondtlsstatechange; - delete dtlsTransport.onerror; - delete this.transceivers[sdpMLineIndex].dtlsTransport; - } - }; - - // Start the RTP Sender and Receiver for a transceiver. - RTCPeerConnection.prototype._transceive = function(transceiver, - send, recv) { - var params = getCommonCapabilities(transceiver.localCapabilities, - transceiver.remoteCapabilities); - if (send && transceiver.rtpSender) { - params.encodings = transceiver.sendEncodingParameters; - params.rtcp = { - cname: SDPUtils.localCName, - compound: transceiver.rtcpParameters.compound - }; - if (transceiver.recvEncodingParameters.length) { - params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc; - } - transceiver.rtpSender.send(params); - } - if (recv && transceiver.rtpReceiver && params.codecs.length > 0) { - // remove RTX field in Edge 14942 - if (transceiver.kind === 'video' - && transceiver.recvEncodingParameters - && edgeVersion < 15019) { - transceiver.recvEncodingParameters.forEach(function(p) { - delete p.rtx; - }); - } - if (transceiver.recvEncodingParameters.length) { - params.encodings = transceiver.recvEncodingParameters; - } else { - params.encodings = [{}]; - } - params.rtcp = { - compound: transceiver.rtcpParameters.compound - }; - if (transceiver.rtcpParameters.cname) { - params.rtcp.cname = transceiver.rtcpParameters.cname; - } - if (transceiver.sendEncodingParameters.length) { - params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc; - } - transceiver.rtpReceiver.receive(params); - } - }; - - RTCPeerConnection.prototype.setLocalDescription = function(description) { - var pc = this; - - // Note: pranswer is not supported. - if (['offer', 'answer'].indexOf(description.type) === -1) { - return Promise.reject(makeError('TypeError', - 'Unsupported type "' + description.type + '"')); - } - - if (!isActionAllowedInSignalingState('setLocalDescription', - description.type, pc.signalingState) || pc._isClosed) { - return Promise.reject(makeError('InvalidStateError', - 'Can not set local ' + description.type + - ' in state ' + pc.signalingState)); - } - - var sections; - var sessionpart; - if (description.type === 'offer') { - // VERY limited support for SDP munging. Limited to: - // * changing the order of codecs - sections = SDPUtils.splitSections(description.sdp); - sessionpart = sections.shift(); - sections.forEach(function(mediaSection, sdpMLineIndex) { - var caps = SDPUtils.parseRtpParameters(mediaSection); - pc.transceivers[sdpMLineIndex].localCapabilities = caps; - }); - - pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { - pc._gather(transceiver.mid, sdpMLineIndex); - }); - } else if (description.type === 'answer') { - sections = SDPUtils.splitSections(pc._remoteDescription.sdp); - sessionpart = sections.shift(); - var isIceLite = SDPUtils.matchPrefix(sessionpart, - 'a=ice-lite').length > 0; - sections.forEach(function(mediaSection, sdpMLineIndex) { - var transceiver = pc.transceivers[sdpMLineIndex]; - var iceGatherer = transceiver.iceGatherer; - var iceTransport = transceiver.iceTransport; - var dtlsTransport = transceiver.dtlsTransport; - var localCapabilities = transceiver.localCapabilities; - var remoteCapabilities = transceiver.remoteCapabilities; - - // treat bundle-only as not-rejected. - var rejected = SDPUtils.isRejected(mediaSection) && - SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0; - - if (!rejected && !transceiver.rejected) { - var remoteIceParameters = SDPUtils.getIceParameters( - mediaSection, sessionpart); - var remoteDtlsParameters = SDPUtils.getDtlsParameters( - mediaSection, sessionpart); - if (isIceLite) { - remoteDtlsParameters.role = 'server'; - } - - if (!pc.usingBundle || sdpMLineIndex === 0) { - pc._gather(transceiver.mid, sdpMLineIndex); - if (iceTransport.state === 'new') { - iceTransport.start(iceGatherer, remoteIceParameters, - isIceLite ? 'controlling' : 'controlled'); - } - if (dtlsTransport.state === 'new') { - dtlsTransport.start(remoteDtlsParameters); - } - } - - // Calculate intersection of capabilities. - var params = getCommonCapabilities(localCapabilities, - remoteCapabilities); - - // Start the RTCRtpSender. The RTCRtpReceiver for this - // transceiver has already been started in setRemoteDescription. - pc._transceive(transceiver, - params.codecs.length > 0, - false); - } - }); - } - - pc._localDescription = { - type: description.type, - sdp: description.sdp - }; - if (description.type === 'offer') { - pc._updateSignalingState('have-local-offer'); - } else { - pc._updateSignalingState('stable'); - } - - return Promise.resolve(); - }; - - RTCPeerConnection.prototype.setRemoteDescription = function(description) { - var pc = this; - - // Note: pranswer is not supported. - if (['offer', 'answer'].indexOf(description.type) === -1) { - return Promise.reject(makeError('TypeError', - 'Unsupported type "' + description.type + '"')); - } - - if (!isActionAllowedInSignalingState('setRemoteDescription', - description.type, pc.signalingState) || pc._isClosed) { - return Promise.reject(makeError('InvalidStateError', - 'Can not set remote ' + description.type + - ' in state ' + pc.signalingState)); - } - - var streams = {}; - pc.remoteStreams.forEach(function(stream) { - streams[stream.id] = stream; - }); - var receiverList = []; - var sections = SDPUtils.splitSections(description.sdp); - var sessionpart = sections.shift(); - var isIceLite = SDPUtils.matchPrefix(sessionpart, - 'a=ice-lite').length > 0; - var usingBundle = SDPUtils.matchPrefix(sessionpart, - 'a=group:BUNDLE ').length > 0; - pc.usingBundle = usingBundle; - var iceOptions = SDPUtils.matchPrefix(sessionpart, - 'a=ice-options:')[0]; - if (iceOptions) { - pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ') - .indexOf('trickle') >= 0; - } else { - pc.canTrickleIceCandidates = false; - } - - sections.forEach(function(mediaSection, sdpMLineIndex) { - var lines = SDPUtils.splitLines(mediaSection); - var kind = SDPUtils.getKind(mediaSection); - // treat bundle-only as not-rejected. - var rejected = SDPUtils.isRejected(mediaSection) && - SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0; - var protocol = lines[0].substr(2).split(' ')[2]; - - var direction = SDPUtils.getDirection(mediaSection, sessionpart); - var remoteMsid = SDPUtils.parseMsid(mediaSection); - - var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier(); - - // Reject datachannels which are not implemented yet. - if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' || - protocol === 'UDP/DTLS/SCTP'))) { - // TODO: this is dangerous in the case where a non-rejected m-line - // becomes rejected. - pc.transceivers[sdpMLineIndex] = { - mid: mid, - kind: kind, - protocol: protocol, - rejected: true - }; - return; - } - - if (!rejected && pc.transceivers[sdpMLineIndex] && - pc.transceivers[sdpMLineIndex].rejected) { - // recycle a rejected transceiver. - pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true); - } - - var transceiver; - var iceGatherer; - var iceTransport; - var dtlsTransport; - var rtpReceiver; - var sendEncodingParameters; - var recvEncodingParameters; - var localCapabilities; - - var track; - // FIXME: ensure the mediaSection has rtcp-mux set. - var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection); - var remoteIceParameters; - var remoteDtlsParameters; - if (!rejected) { - remoteIceParameters = SDPUtils.getIceParameters(mediaSection, - sessionpart); - remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, - sessionpart); - remoteDtlsParameters.role = 'client'; - } - recvEncodingParameters = - SDPUtils.parseRtpEncodingParameters(mediaSection); - - var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection); - - var isComplete = SDPUtils.matchPrefix(mediaSection, - 'a=end-of-candidates', sessionpart).length > 0; - var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:') - .map(function(cand) { - return SDPUtils.parseCandidate(cand); - }) - .filter(function(cand) { - return cand.component === 1; - }); - - // Check if we can use BUNDLE and dispose transports. - if ((description.type === 'offer' || description.type === 'answer') && - !rejected && usingBundle && sdpMLineIndex > 0 && - pc.transceivers[sdpMLineIndex]) { - pc._disposeIceAndDtlsTransports(sdpMLineIndex); - pc.transceivers[sdpMLineIndex].iceGatherer = - pc.transceivers[0].iceGatherer; - pc.transceivers[sdpMLineIndex].iceTransport = - pc.transceivers[0].iceTransport; - pc.transceivers[sdpMLineIndex].dtlsTransport = - pc.transceivers[0].dtlsTransport; - if (pc.transceivers[sdpMLineIndex].rtpSender) { - pc.transceivers[sdpMLineIndex].rtpSender.setTransport( - pc.transceivers[0].dtlsTransport); - } - if (pc.transceivers[sdpMLineIndex].rtpReceiver) { - pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport( - pc.transceivers[0].dtlsTransport); - } - } - if (description.type === 'offer' && !rejected) { - transceiver = pc.transceivers[sdpMLineIndex] || - pc._createTransceiver(kind); - transceiver.mid = mid; - - if (!transceiver.iceGatherer) { - transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, - usingBundle); - } - - if (cands.length && transceiver.iceTransport.state === 'new') { - if (isComplete && (!usingBundle || sdpMLineIndex === 0)) { - transceiver.iceTransport.setRemoteCandidates(cands); - } else { - cands.forEach(function(candidate) { - maybeAddCandidate(transceiver.iceTransport, candidate); - }); - } - } - - localCapabilities = window.RTCRtpReceiver.getCapabilities(kind); - - // filter RTX until additional stuff needed for RTX is implemented - // in adapter.js - if (edgeVersion < 15019) { - localCapabilities.codecs = localCapabilities.codecs.filter( - function(codec) { - return codec.name !== 'rtx'; - }); - } - - sendEncodingParameters = transceiver.sendEncodingParameters || [{ - ssrc: (2 * sdpMLineIndex + 2) * 1001 - }]; - - // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams - var isNewTrack = false; - if (direction === 'sendrecv' || direction === 'sendonly') { - isNewTrack = !transceiver.rtpReceiver; - rtpReceiver = transceiver.rtpReceiver || - new window.RTCRtpReceiver(transceiver.dtlsTransport, kind); - - if (isNewTrack) { - var stream; - track = rtpReceiver.track; - // FIXME: does not work with Plan B. - if (remoteMsid && remoteMsid.stream === '-') { - // no-op. a stream id of '-' means: no associated stream. - } else if (remoteMsid) { - if (!streams[remoteMsid.stream]) { - streams[remoteMsid.stream] = new window.MediaStream(); - Object.defineProperty(streams[remoteMsid.stream], 'id', { - get: function() { - return remoteMsid.stream; - } - }); - } - Object.defineProperty(track, 'id', { - get: function() { - return remoteMsid.track; - } - }); - stream = streams[remoteMsid.stream]; - } else { - if (!streams.default) { - streams.default = new window.MediaStream(); - } - stream = streams.default; - } - if (stream) { - addTrackToStreamAndFireEvent(track, stream); - transceiver.associatedRemoteMediaStreams.push(stream); - } - receiverList.push([track, rtpReceiver, stream]); - } - } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) { - transceiver.associatedRemoteMediaStreams.forEach(function(s) { - var nativeTrack = s.getTracks().find(function(t) { - return t.id === transceiver.rtpReceiver.track.id; - }); - if (nativeTrack) { - removeTrackFromStreamAndFireEvent(nativeTrack, s); - } - }); - transceiver.associatedRemoteMediaStreams = []; - } - - transceiver.localCapabilities = localCapabilities; - transceiver.remoteCapabilities = remoteCapabilities; - transceiver.rtpReceiver = rtpReceiver; - transceiver.rtcpParameters = rtcpParameters; - transceiver.sendEncodingParameters = sendEncodingParameters; - transceiver.recvEncodingParameters = recvEncodingParameters; - - // Start the RTCRtpReceiver now. The RTPSender is started in - // setLocalDescription. - pc._transceive(pc.transceivers[sdpMLineIndex], - false, - isNewTrack); - } else if (description.type === 'answer' && !rejected) { - transceiver = pc.transceivers[sdpMLineIndex]; - iceGatherer = transceiver.iceGatherer; - iceTransport = transceiver.iceTransport; - dtlsTransport = transceiver.dtlsTransport; - rtpReceiver = transceiver.rtpReceiver; - sendEncodingParameters = transceiver.sendEncodingParameters; - localCapabilities = transceiver.localCapabilities; - - pc.transceivers[sdpMLineIndex].recvEncodingParameters = - recvEncodingParameters; - pc.transceivers[sdpMLineIndex].remoteCapabilities = - remoteCapabilities; - pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters; - - if (cands.length && iceTransport.state === 'new') { - if ((isIceLite || isComplete) && - (!usingBundle || sdpMLineIndex === 0)) { - iceTransport.setRemoteCandidates(cands); - } else { - cands.forEach(function(candidate) { - maybeAddCandidate(transceiver.iceTransport, candidate); - }); - } - } - - if (!usingBundle || sdpMLineIndex === 0) { - if (iceTransport.state === 'new') { - iceTransport.start(iceGatherer, remoteIceParameters, - 'controlling'); - } - if (dtlsTransport.state === 'new') { - dtlsTransport.start(remoteDtlsParameters); - } - } - - // If the offer contained RTX but the answer did not, - // remove RTX from sendEncodingParameters. - var commonCapabilities = getCommonCapabilities( - transceiver.localCapabilities, - transceiver.remoteCapabilities); - - var hasRtx = commonCapabilities.codecs.filter(function(c) { - return c.name.toLowerCase() === 'rtx'; - }).length; - if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) { - delete transceiver.sendEncodingParameters[0].rtx; - } - - pc._transceive(transceiver, - direction === 'sendrecv' || direction === 'recvonly', - direction === 'sendrecv' || direction === 'sendonly'); - - // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams - if (rtpReceiver && - (direction === 'sendrecv' || direction === 'sendonly')) { - track = rtpReceiver.track; - if (remoteMsid) { - if (!streams[remoteMsid.stream]) { - streams[remoteMsid.stream] = new window.MediaStream(); - } - addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]); - receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]); - } else { - if (!streams.default) { - streams.default = new window.MediaStream(); - } - addTrackToStreamAndFireEvent(track, streams.default); - receiverList.push([track, rtpReceiver, streams.default]); - } - } else { - // FIXME: actually the receiver should be created later. - delete transceiver.rtpReceiver; - } - } - }); - - if (pc._dtlsRole === undefined) { - pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive'; - } - - pc._remoteDescription = { - type: description.type, - sdp: description.sdp - }; - if (description.type === 'offer') { - pc._updateSignalingState('have-remote-offer'); - } else { - pc._updateSignalingState('stable'); - } - Object.keys(streams).forEach(function(sid) { - var stream = streams[sid]; - if (stream.getTracks().length) { - if (pc.remoteStreams.indexOf(stream) === -1) { - pc.remoteStreams.push(stream); - var event = new Event('addstream'); - event.stream = stream; - window.setTimeout(function() { - pc._dispatchEvent('addstream', event); - }); - } - - receiverList.forEach(function(item) { - var track = item[0]; - var receiver = item[1]; - if (stream.id !== item[2].id) { - return; - } - fireAddTrack(pc, track, receiver, [stream]); - }); - } - }); - receiverList.forEach(function(item) { - if (item[2]) { - return; - } - fireAddTrack(pc, item[0], item[1], []); - }); - - // check whether addIceCandidate({}) was called within four seconds after - // setRemoteDescription. - window.setTimeout(function() { - if (!(pc && pc.transceivers)) { - return; - } - pc.transceivers.forEach(function(transceiver) { - if (transceiver.iceTransport && - transceiver.iceTransport.state === 'new' && - transceiver.iceTransport.getRemoteCandidates().length > 0) { - console.warn('Timeout for addRemoteCandidate. Consider sending ' + - 'an end-of-candidates notification'); - transceiver.iceTransport.addRemoteCandidate({}); - } - }); - }, 4000); - - return Promise.resolve(); - }; - - RTCPeerConnection.prototype.close = function() { - this.transceivers.forEach(function(transceiver) { - /* not yet - if (transceiver.iceGatherer) { - transceiver.iceGatherer.close(); - } - */ - if (transceiver.iceTransport) { - transceiver.iceTransport.stop(); - } - if (transceiver.dtlsTransport) { - transceiver.dtlsTransport.stop(); - } - if (transceiver.rtpSender) { - transceiver.rtpSender.stop(); - } - if (transceiver.rtpReceiver) { - transceiver.rtpReceiver.stop(); - } - }); - // FIXME: clean up tracks, local streams, remote streams, etc - this._isClosed = true; - this._updateSignalingState('closed'); - }; - - // Update the signaling state. - RTCPeerConnection.prototype._updateSignalingState = function(newState) { - this.signalingState = newState; - var event = new Event('signalingstatechange'); - this._dispatchEvent('signalingstatechange', event); - }; - - // Determine whether to fire the negotiationneeded event. - RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() { - var pc = this; - if (this.signalingState !== 'stable' || this.needNegotiation === true) { - return; - } - this.needNegotiation = true; - window.setTimeout(function() { - if (pc.needNegotiation) { - pc.needNegotiation = false; - var event = new Event('negotiationneeded'); - pc._dispatchEvent('negotiationneeded', event); - } - }, 0); - }; - - // Update the ice connection state. - RTCPeerConnection.prototype._updateIceConnectionState = function() { - var newState; - var states = { - 'new': 0, - closed: 0, - checking: 0, - connected: 0, - completed: 0, - disconnected: 0, - failed: 0 - }; - this.transceivers.forEach(function(transceiver) { - if (transceiver.iceTransport && !transceiver.rejected) { - states[transceiver.iceTransport.state]++; - } - }); - - newState = 'new'; - if (states.failed > 0) { - newState = 'failed'; - } else if (states.checking > 0) { - newState = 'checking'; - } else if (states.disconnected > 0) { - newState = 'disconnected'; - } else if (states.new > 0) { - newState = 'new'; - } else if (states.connected > 0) { - newState = 'connected'; - } else if (states.completed > 0) { - newState = 'completed'; - } - - if (newState !== this.iceConnectionState) { - this.iceConnectionState = newState; - var event = new Event('iceconnectionstatechange'); - this._dispatchEvent('iceconnectionstatechange', event); - } - }; - - // Update the connection state. - RTCPeerConnection.prototype._updateConnectionState = function() { - var newState; - var states = { - 'new': 0, - closed: 0, - connecting: 0, - connected: 0, - completed: 0, - disconnected: 0, - failed: 0 - }; - this.transceivers.forEach(function(transceiver) { - if (transceiver.iceTransport && transceiver.dtlsTransport && - !transceiver.rejected) { - states[transceiver.iceTransport.state]++; - states[transceiver.dtlsTransport.state]++; - } - }); - // ICETransport.completed and connected are the same for this purpose. - states.connected += states.completed; - - newState = 'new'; - if (states.failed > 0) { - newState = 'failed'; - } else if (states.connecting > 0) { - newState = 'connecting'; - } else if (states.disconnected > 0) { - newState = 'disconnected'; - } else if (states.new > 0) { - newState = 'new'; - } else if (states.connected > 0) { - newState = 'connected'; - } - - if (newState !== this.connectionState) { - this.connectionState = newState; - var event = new Event('connectionstatechange'); - this._dispatchEvent('connectionstatechange', event); - } - }; - - RTCPeerConnection.prototype.createOffer = function() { - var pc = this; - - if (pc._isClosed) { - return Promise.reject(makeError('InvalidStateError', - 'Can not call createOffer after close')); - } - - var numAudioTracks = pc.transceivers.filter(function(t) { - return t.kind === 'audio'; - }).length; - var numVideoTracks = pc.transceivers.filter(function(t) { - return t.kind === 'video'; - }).length; - - // Determine number of audio and video tracks we need to send/recv. - var offerOptions = arguments[0]; - if (offerOptions) { - // Reject Chrome legacy constraints. - if (offerOptions.mandatory || offerOptions.optional) { - throw new TypeError( - 'Legacy mandatory/optional constraints not supported.'); - } - if (offerOptions.offerToReceiveAudio !== undefined) { - if (offerOptions.offerToReceiveAudio === true) { - numAudioTracks = 1; - } else if (offerOptions.offerToReceiveAudio === false) { - numAudioTracks = 0; - } else { - numAudioTracks = offerOptions.offerToReceiveAudio; - } - } - if (offerOptions.offerToReceiveVideo !== undefined) { - if (offerOptions.offerToReceiveVideo === true) { - numVideoTracks = 1; - } else if (offerOptions.offerToReceiveVideo === false) { - numVideoTracks = 0; - } else { - numVideoTracks = offerOptions.offerToReceiveVideo; - } - } - } - - pc.transceivers.forEach(function(transceiver) { - if (transceiver.kind === 'audio') { - numAudioTracks--; - if (numAudioTracks < 0) { - transceiver.wantReceive = false; - } - } else if (transceiver.kind === 'video') { - numVideoTracks--; - if (numVideoTracks < 0) { - transceiver.wantReceive = false; - } - } - }); - - // Create M-lines for recvonly streams. - while (numAudioTracks > 0 || numVideoTracks > 0) { - if (numAudioTracks > 0) { - pc._createTransceiver('audio'); - numAudioTracks--; - } - if (numVideoTracks > 0) { - pc._createTransceiver('video'); - numVideoTracks--; - } - } - - var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, - pc._sdpSessionVersion++); - pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { - // For each track, create an ice gatherer, ice transport, - // dtls transport, potentially rtpsender and rtpreceiver. - var track = transceiver.track; - var kind = transceiver.kind; - var mid = transceiver.mid || SDPUtils.generateIdentifier(); - transceiver.mid = mid; - - if (!transceiver.iceGatherer) { - transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, - pc.usingBundle); - } - - var localCapabilities = window.RTCRtpSender.getCapabilities(kind); - // filter RTX until additional stuff needed for RTX is implemented - // in adapter.js - if (edgeVersion < 15019) { - localCapabilities.codecs = localCapabilities.codecs.filter( - function(codec) { - return codec.name !== 'rtx'; - }); - } - localCapabilities.codecs.forEach(function(codec) { - // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552 - // by adding level-asymmetry-allowed=1 - if (codec.name === 'H264' && - codec.parameters['level-asymmetry-allowed'] === undefined) { - codec.parameters['level-asymmetry-allowed'] = '1'; - } - - // for subsequent offers, we might have to re-use the payload - // type of the last offer. - if (transceiver.remoteCapabilities && - transceiver.remoteCapabilities.codecs) { - transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) { - if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() && - codec.clockRate === remoteCodec.clockRate) { - codec.preferredPayloadType = remoteCodec.payloadType; - } - }); - } - }); - localCapabilities.headerExtensions.forEach(function(hdrExt) { - var remoteExtensions = transceiver.remoteCapabilities && - transceiver.remoteCapabilities.headerExtensions || []; - remoteExtensions.forEach(function(rHdrExt) { - if (hdrExt.uri === rHdrExt.uri) { - hdrExt.id = rHdrExt.id; - } - }); - }); - - // generate an ssrc now, to be used later in rtpSender.send - var sendEncodingParameters = transceiver.sendEncodingParameters || [{ - ssrc: (2 * sdpMLineIndex + 1) * 1001 - }]; - if (track) { - // add RTX - if (edgeVersion >= 15019 && kind === 'video' && - !sendEncodingParameters[0].rtx) { - sendEncodingParameters[0].rtx = { - ssrc: sendEncodingParameters[0].ssrc + 1 - }; - } - } - - if (transceiver.wantReceive) { - transceiver.rtpReceiver = new window.RTCRtpReceiver( - transceiver.dtlsTransport, kind); - } - - transceiver.localCapabilities = localCapabilities; - transceiver.sendEncodingParameters = sendEncodingParameters; - }); - - // always offer BUNDLE and dispose on return if not supported. - if (pc._config.bundlePolicy !== 'max-compat') { - sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) { - return t.mid; - }).join(' ') + '\r\n'; - } - sdp += 'a=ice-options:trickle\r\n'; - - pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { - sdp += writeMediaSection(transceiver, transceiver.localCapabilities, - 'offer', transceiver.stream, pc._dtlsRole); - sdp += 'a=rtcp-rsize\r\n'; - - if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' && - (sdpMLineIndex === 0 || !pc.usingBundle)) { - transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) { - cand.component = 1; - sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n'; - }); - - if (transceiver.iceGatherer.state === 'completed') { - sdp += 'a=end-of-candidates\r\n'; - } - } - }); - - var desc = new window.RTCSessionDescription({ - type: 'offer', - sdp: sdp - }); - return Promise.resolve(desc); - }; - - RTCPeerConnection.prototype.createAnswer = function() { - var pc = this; - - if (pc._isClosed) { - return Promise.reject(makeError('InvalidStateError', - 'Can not call createAnswer after close')); - } - - if (!(pc.signalingState === 'have-remote-offer' || - pc.signalingState === 'have-local-pranswer')) { - return Promise.reject(makeError('InvalidStateError', - 'Can not call createAnswer in signalingState ' + pc.signalingState)); - } - - var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, - pc._sdpSessionVersion++); - if (pc.usingBundle) { - sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) { - return t.mid; - }).join(' ') + '\r\n'; - } - sdp += 'a=ice-options:trickle\r\n'; - - var mediaSectionsInOffer = SDPUtils.getMediaSections( - pc._remoteDescription.sdp).length; - pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { - if (sdpMLineIndex + 1 > mediaSectionsInOffer) { - return; - } - if (transceiver.rejected) { - if (transceiver.kind === 'application') { - if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt - sdp += 'm=application 0 DTLS/SCTP 5000\r\n'; - } else { - sdp += 'm=application 0 ' + transceiver.protocol + - ' webrtc-datachannel\r\n'; - } - } else if (transceiver.kind === 'audio') { - sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' + - 'a=rtpmap:0 PCMU/8000\r\n'; - } else if (transceiver.kind === 'video') { - sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' + - 'a=rtpmap:120 VP8/90000\r\n'; - } - sdp += 'c=IN IP4 0.0.0.0\r\n' + - 'a=inactive\r\n' + - 'a=mid:' + transceiver.mid + '\r\n'; - return; - } - - // FIXME: look at direction. - if (transceiver.stream) { - var localTrack; - if (transceiver.kind === 'audio') { - localTrack = transceiver.stream.getAudioTracks()[0]; - } else if (transceiver.kind === 'video') { - localTrack = transceiver.stream.getVideoTracks()[0]; - } - if (localTrack) { - // add RTX - if (edgeVersion >= 15019 && transceiver.kind === 'video' && - !transceiver.sendEncodingParameters[0].rtx) { - transceiver.sendEncodingParameters[0].rtx = { - ssrc: transceiver.sendEncodingParameters[0].ssrc + 1 - }; - } - } - } - - // Calculate intersection of capabilities. - var commonCapabilities = getCommonCapabilities( - transceiver.localCapabilities, - transceiver.remoteCapabilities); - - var hasRtx = commonCapabilities.codecs.filter(function(c) { - return c.name.toLowerCase() === 'rtx'; - }).length; - if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) { - delete transceiver.sendEncodingParameters[0].rtx; - } - - sdp += writeMediaSection(transceiver, commonCapabilities, - 'answer', transceiver.stream, pc._dtlsRole); - if (transceiver.rtcpParameters && - transceiver.rtcpParameters.reducedSize) { - sdp += 'a=rtcp-rsize\r\n'; - } - }); - - var desc = new window.RTCSessionDescription({ - type: 'answer', - sdp: sdp - }); - return Promise.resolve(desc); - }; - - RTCPeerConnection.prototype.addIceCandidate = function(candidate) { - var pc = this; - var sections; - if (candidate && !(candidate.sdpMLineIndex !== undefined || - candidate.sdpMid)) { - return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required')); - } - - // TODO: needs to go into ops queue. - return new Promise(function(resolve, reject) { - if (!pc._remoteDescription) { - return reject(makeError('InvalidStateError', - 'Can not add ICE candidate without a remote description')); - } else if (!candidate || candidate.candidate === '') { - for (var j = 0; j < pc.transceivers.length; j++) { - if (pc.transceivers[j].rejected) { - continue; - } - pc.transceivers[j].iceTransport.addRemoteCandidate({}); - sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp); - sections[j] += 'a=end-of-candidates\r\n'; - pc._remoteDescription.sdp = - SDPUtils.getDescription(pc._remoteDescription.sdp) + - sections.join(''); - if (pc.usingBundle) { - break; - } - } - } else { - var sdpMLineIndex = candidate.sdpMLineIndex; - if (candidate.sdpMid) { - for (var i = 0; i < pc.transceivers.length; i++) { - if (pc.transceivers[i].mid === candidate.sdpMid) { - sdpMLineIndex = i; - break; - } - } - } - var transceiver = pc.transceivers[sdpMLineIndex]; - if (transceiver) { - if (transceiver.rejected) { - return resolve(); - } - var cand = Object.keys(candidate.candidate).length > 0 ? - SDPUtils.parseCandidate(candidate.candidate) : {}; - // Ignore Chrome's invalid candidates since Edge does not like them. - if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) { - return resolve(); - } - // Ignore RTCP candidates, we assume RTCP-MUX. - if (cand.component && cand.component !== 1) { - return resolve(); - } - // when using bundle, avoid adding candidates to the wrong - // ice transport. And avoid adding candidates added in the SDP. - if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 && - transceiver.iceTransport !== pc.transceivers[0].iceTransport)) { - if (!maybeAddCandidate(transceiver.iceTransport, cand)) { - return reject(makeError('OperationError', - 'Can not add ICE candidate')); - } - } - - // update the remoteDescription. - var candidateString = candidate.candidate.trim(); - if (candidateString.indexOf('a=') === 0) { - candidateString = candidateString.substr(2); - } - sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp); - sections[sdpMLineIndex] += 'a=' + - (cand.type ? candidateString : 'end-of-candidates') - + '\r\n'; - pc._remoteDescription.sdp = - SDPUtils.getDescription(pc._remoteDescription.sdp) + - sections.join(''); - } else { - return reject(makeError('OperationError', - 'Can not add ICE candidate')); - } - } - resolve(); - }); - }; - - RTCPeerConnection.prototype.getStats = function(selector) { - if (selector && selector instanceof window.MediaStreamTrack) { - var senderOrReceiver = null; - this.transceivers.forEach(function(transceiver) { - if (transceiver.rtpSender && - transceiver.rtpSender.track === selector) { - senderOrReceiver = transceiver.rtpSender; - } else if (transceiver.rtpReceiver && - transceiver.rtpReceiver.track === selector) { - senderOrReceiver = transceiver.rtpReceiver; - } - }); - if (!senderOrReceiver) { - throw makeError('InvalidAccessError', 'Invalid selector.'); - } - return senderOrReceiver.getStats(); - } - - var promises = []; - this.transceivers.forEach(function(transceiver) { - ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', - 'dtlsTransport'].forEach(function(method) { - if (transceiver[method]) { - promises.push(transceiver[method].getStats()); - } - }); - }); - return Promise.all(promises).then(function(allStats) { - var results = new Map(); - allStats.forEach(function(stats) { - stats.forEach(function(stat) { - results.set(stat.id, stat); - }); - }); - return results; - }); - }; - - // fix low-level stat names and return Map instead of object. - var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer', - 'RTCIceTransport', 'RTCDtlsTransport']; - ortcObjects.forEach(function(ortcObjectName) { - var obj = window[ortcObjectName]; - if (obj && obj.prototype && obj.prototype.getStats) { - var nativeGetstats = obj.prototype.getStats; - obj.prototype.getStats = function() { - return nativeGetstats.apply(this) - .then(function(nativeStats) { - var mapStats = new Map(); - Object.keys(nativeStats).forEach(function(id) { - nativeStats[id].type = fixStatsType(nativeStats[id]); - mapStats.set(id, nativeStats[id]); - }); - return mapStats; - }); - }; - } - }); - - // legacy callback shims. Should be moved to adapter.js some days. - var methods = ['createOffer', 'createAnswer']; - methods.forEach(function(method) { - var nativeMethod = RTCPeerConnection.prototype[method]; - RTCPeerConnection.prototype[method] = function() { - var args = arguments; - if (typeof args[0] === 'function' || - typeof args[1] === 'function') { // legacy - return nativeMethod.apply(this, [arguments[2]]) - .then(function(description) { - if (typeof args[0] === 'function') { - args[0].apply(null, [description]); - } - }, function(error) { - if (typeof args[1] === 'function') { - args[1].apply(null, [error]); - } - }); - } - return nativeMethod.apply(this, arguments); - }; - }); - - methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']; - methods.forEach(function(method) { - var nativeMethod = RTCPeerConnection.prototype[method]; - RTCPeerConnection.prototype[method] = function() { - var args = arguments; - if (typeof args[1] === 'function' || - typeof args[2] === 'function') { // legacy - return nativeMethod.apply(this, arguments) - .then(function() { - if (typeof args[1] === 'function') { - args[1].apply(null); - } - }, function(error) { - if (typeof args[2] === 'function') { - args[2].apply(null, [error]); - } - }); - } - return nativeMethod.apply(this, arguments); - }; - }); - - // getStats is special. It doesn't have a spec legacy method yet we support - // getStats(something, cb) without error callbacks. - ['getStats'].forEach(function(method) { - var nativeMethod = RTCPeerConnection.prototype[method]; - RTCPeerConnection.prototype[method] = function() { - var args = arguments; - if (typeof args[1] === 'function') { - return nativeMethod.apply(this, arguments) - .then(function() { - if (typeof args[1] === 'function') { - args[1].apply(null); - } - }); - } - return nativeMethod.apply(this, arguments); - }; - }); - - return RTCPeerConnection; -}; - -},{"sdp":17}],17:[function(require,module,exports){ +},{}],12:[function(require,module,exports){ /* eslint-env node */ 'use strict'; // SDP helpers. + +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; + var SDPUtils = {}; // Generate an alphanumeric identifier for cname or mids. // TODO: use UUIDs instead? https://gist.github.com/jed/982883 -SDPUtils.generateIdentifier = function() { +SDPUtils.generateIdentifier = function () { return Math.random().toString(36).substr(2, 10); }; @@ -4756,35 +2703,35 @@ SDPUtils.generateIdentifier = function() { SDPUtils.localCName = SDPUtils.generateIdentifier(); // Splits SDP into lines, dealing with both CRLF and LF. -SDPUtils.splitLines = function(blob) { - return blob.trim().split('\n').map(function(line) { +SDPUtils.splitLines = function (blob) { + return blob.trim().split('\n').map(function (line) { return line.trim(); }); }; // Splits SDP into sessionpart and mediasections. Ensures CRLF. -SDPUtils.splitSections = function(blob) { +SDPUtils.splitSections = function (blob) { var parts = blob.split('\nm='); - return parts.map(function(part, index) { + return parts.map(function (part, index) { return (index > 0 ? 'm=' + part : part).trim() + '\r\n'; }); }; // returns the session description. -SDPUtils.getDescription = function(blob) { +SDPUtils.getDescription = function (blob) { var sections = SDPUtils.splitSections(blob); return sections && sections[0]; }; // returns the individual media sections. -SDPUtils.getMediaSections = function(blob) { +SDPUtils.getMediaSections = function (blob) { var sections = SDPUtils.splitSections(blob); sections.shift(); return sections; }; // Returns lines that start with a certain prefix. -SDPUtils.matchPrefix = function(blob, prefix) { - return SDPUtils.splitLines(blob).filter(function(line) { +SDPUtils.matchPrefix = function (blob, prefix) { + return SDPUtils.splitLines(blob).filter(function (line) { return line.indexOf(prefix) === 0; }); }; @@ -4792,8 +2739,8 @@ SDPUtils.matchPrefix = function(blob, prefix) { // Parses an ICE candidate line. Sample input: // candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8 // rport 55996" -SDPUtils.parseCandidate = function(line) { - var parts; +SDPUtils.parseCandidate = function (line) { + var parts = void 0; // Parse both variants. if (line.indexOf('a=candidate:') === 0) { parts = line.substring(12).split(' '); @@ -4803,7 +2750,7 @@ SDPUtils.parseCandidate = function(line) { var candidate = { foundation: parts[0], - component: parseInt(parts[1], 10), + component: { 1: 'rtp', 2: 'rtcp' }[parts[1]], protocol: parts[2].toLowerCase(), priority: parseInt(parts[3], 10), ip: parts[4], @@ -4825,11 +2772,14 @@ SDPUtils.parseCandidate = function(line) { candidate.tcpType = parts[i + 1]; break; case 'ufrag': - candidate.ufrag = parts[i + 1]; // for backward compability. + candidate.ufrag = parts[i + 1]; // for backward compatibility. candidate.usernameFragment = parts[i + 1]; break; - default: // extension handling, in particular ufrag - candidate[parts[i]] = parts[i + 1]; + default: + // extension handling, in particular ufrag. Don't overwrite. + if (candidate[parts[i]] === undefined) { + candidate[parts[i]] = parts[i + 1]; + } break; } } @@ -4837,10 +2787,18 @@ SDPUtils.parseCandidate = function(line) { }; // Translates a candidate object into SDP candidate attribute. -SDPUtils.writeCandidate = function(candidate) { +SDPUtils.writeCandidate = function (candidate) { var sdp = []; sdp.push(candidate.foundation); - sdp.push(candidate.component); + + var component = candidate.component; + if (component === 'rtp') { + sdp.push(1); + } else if (component === 'rtcp') { + sdp.push(2); + } else { + sdp.push(component); + } sdp.push(candidate.protocol.toUpperCase()); sdp.push(candidate.priority); sdp.push(candidate.address || candidate.ip); @@ -4849,8 +2807,7 @@ SDPUtils.writeCandidate = function(candidate) { var type = candidate.type; sdp.push('typ'); sdp.push(type); - if (type !== 'host' && candidate.relatedAddress && - candidate.relatedPort) { + if (type !== 'host' && candidate.relatedAddress && candidate.relatedPort) { sdp.push('raddr'); sdp.push(candidate.relatedAddress); sdp.push('rport'); @@ -4869,13 +2826,13 @@ SDPUtils.writeCandidate = function(candidate) { // Parses an ice-options line, returns an array of option tags. // a=ice-options:foo bar -SDPUtils.parseIceOptions = function(line) { +SDPUtils.parseIceOptions = function (line) { return line.substr(14).split(' '); }; // Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input: // a=rtpmap:111 opus/48000/2 -SDPUtils.parseRtpMap = function(line) { +SDPUtils.parseRtpMap = function (line) { var parts = line.substr(9).split(' '); var parsed = { payloadType: parseInt(parts.shift(), 10) // was: id @@ -4893,20 +2850,19 @@ SDPUtils.parseRtpMap = function(line) { // Generate an a=rtpmap line from RTCRtpCodecCapability or // RTCRtpCodecParameters. -SDPUtils.writeRtpMap = function(codec) { +SDPUtils.writeRtpMap = function (codec) { var pt = codec.payloadType; if (codec.preferredPayloadType !== undefined) { pt = codec.preferredPayloadType; } var channels = codec.channels || codec.numChannels || 1; - return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + - (channels !== 1 ? '/' + channels : '') + '\r\n'; + return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + (channels !== 1 ? '/' + channels : '') + '\r\n'; }; // Parses an a=extmap line (headerextension from RFC 5285). Sample input: // a=extmap:2 urn:ietf:params:rtp-hdrext:toffset // a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset -SDPUtils.parseExtmap = function(line) { +SDPUtils.parseExtmap = function (line) { var parts = line.substr(9).split(' '); return { id: parseInt(parts[0], 10), @@ -4917,20 +2873,16 @@ SDPUtils.parseExtmap = function(line) { // Generates a=extmap line from RTCRtpHeaderExtensionParameters or // RTCRtpHeaderExtension. -SDPUtils.writeExtmap = function(headerExtension) { - return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + - (headerExtension.direction && headerExtension.direction !== 'sendrecv' - ? '/' + headerExtension.direction - : '') + - ' ' + headerExtension.uri + '\r\n'; +SDPUtils.writeExtmap = function (headerExtension) { + return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + (headerExtension.direction && headerExtension.direction !== 'sendrecv' ? '/' + headerExtension.direction : '') + ' ' + headerExtension.uri + '\r\n'; }; // Parses an ftmp line, returns dictionary. Sample input: // a=fmtp:96 vbr=on;cng=on // Also deals with vbr=on; cng=on -SDPUtils.parseFmtp = function(line) { +SDPUtils.parseFmtp = function (line) { var parsed = {}; - var kv; + var kv = void 0; var parts = line.substr(line.indexOf(' ') + 1).split(';'); for (var j = 0; j < parts.length; j++) { kv = parts[j].trim().split('='); @@ -4940,7 +2892,7 @@ SDPUtils.parseFmtp = function(line) { }; // Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters. -SDPUtils.writeFmtp = function(codec) { +SDPUtils.writeFmtp = function (codec) { var line = ''; var pt = codec.payloadType; if (codec.preferredPayloadType !== undefined) { @@ -4948,7 +2900,7 @@ SDPUtils.writeFmtp = function(codec) { } if (codec.parameters && Object.keys(codec.parameters).length) { var params = []; - Object.keys(codec.parameters).forEach(function(param) { + Object.keys(codec.parameters).forEach(function (param) { if (codec.parameters[param]) { params.push(param + '=' + codec.parameters[param]); } else { @@ -4962,7 +2914,7 @@ SDPUtils.writeFmtp = function(codec) { // Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input: // a=rtcp-fb:98 nack rpsi -SDPUtils.parseRtcpFb = function(line) { +SDPUtils.parseRtcpFb = function (line) { var parts = line.substr(line.indexOf(' ') + 1).split(' '); return { type: parts.shift(), @@ -4970,7 +2922,7 @@ SDPUtils.parseRtcpFb = function(line) { }; }; // Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters. -SDPUtils.writeRtcpFb = function(codec) { +SDPUtils.writeRtcpFb = function (codec) { var lines = ''; var pt = codec.payloadType; if (codec.preferredPayloadType !== undefined) { @@ -4978,10 +2930,8 @@ SDPUtils.writeRtcpFb = function(codec) { } if (codec.rtcpFeedback && codec.rtcpFeedback.length) { // FIXME: special handling for trr-int? - codec.rtcpFeedback.forEach(function(fb) { - lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + - (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + - '\r\n'; + codec.rtcpFeedback.forEach(function (fb) { + lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + '\r\n'; }); } return lines; @@ -4989,7 +2939,7 @@ SDPUtils.writeRtcpFb = function(codec) { // Parses an RFC 5576 ssrc media attribute. Sample input: // a=ssrc:3735928559 cname:something -SDPUtils.parseSsrcMedia = function(line) { +SDPUtils.parseSsrcMedia = function (line) { var sp = line.indexOf(' '); var parts = { ssrc: parseInt(line.substr(7, sp - 7), 10) @@ -5004,11 +2954,11 @@ SDPUtils.parseSsrcMedia = function(line) { return parts; }; -SDPUtils.parseSsrcGroup = function(line) { +SDPUtils.parseSsrcGroup = function (line) { var parts = line.substr(13).split(' '); return { semantics: parts.shift(), - ssrcs: parts.map(function(ssrc) { + ssrcs: parts.map(function (ssrc) { return parseInt(ssrc, 10); }) }; @@ -5016,14 +2966,14 @@ SDPUtils.parseSsrcGroup = function(line) { // Extracts the MID (RFC 5888) from a media section. // returns the MID or undefined if no mid line was found. -SDPUtils.getMid = function(mediaSection) { +SDPUtils.getMid = function (mediaSection) { var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0]; if (mid) { return mid.substr(6); } }; -SDPUtils.parseFingerprint = function(line) { +SDPUtils.parseFingerprint = function (line) { var parts = line.substr(14).split(' '); return { algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge. @@ -5034,9 +2984,8 @@ SDPUtils.parseFingerprint = function(line) { // Extracts DTLS parameters from SDP media section or sessionpart. // FIXME: for consistency with other functions this should only // get the fingerprint line as input. See also getIceParameters. -SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) { - var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, - 'a=fingerprint:'); +SDPUtils.getDtlsParameters = function (mediaSection, sessionpart) { + var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=fingerprint:'); // Note: a=setup line is ignored since we use the 'auto' role. // Note2: 'algorithm' is not case sensitive except in Edge. return { @@ -5046,9 +2995,9 @@ SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) { }; // Serializes DTLS parameters to SDP. -SDPUtils.writeDtlsParameters = function(params, setupType) { +SDPUtils.writeDtlsParameters = function (params, setupType) { var sdp = 'a=setup:' + setupType + '\r\n'; - params.fingerprints.forEach(function(fp) { + params.fingerprints.forEach(function (fp) { sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n'; }); return sdp; @@ -5056,29 +3005,23 @@ SDPUtils.writeDtlsParameters = function(params, setupType) { // Parses a=crypto lines into // https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members -SDPUtils.parseCryptoLine = function(line) { +SDPUtils.parseCryptoLine = function (line) { var parts = line.substr(9).split(' '); return { tag: parseInt(parts[0], 10), cryptoSuite: parts[1], keyParams: parts[2], - sessionParams: parts.slice(3), + sessionParams: parts.slice(3) }; }; -SDPUtils.writeCryptoLine = function(parameters) { - return 'a=crypto:' + parameters.tag + ' ' + - parameters.cryptoSuite + ' ' + - (typeof parameters.keyParams === 'object' - ? SDPUtils.writeCryptoKeyParams(parameters.keyParams) - : parameters.keyParams) + - (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') + - '\r\n'; +SDPUtils.writeCryptoLine = function (parameters) { + return 'a=crypto:' + parameters.tag + ' ' + parameters.cryptoSuite + ' ' + (_typeof(parameters.keyParams) === 'object' ? SDPUtils.writeCryptoKeyParams(parameters.keyParams) : parameters.keyParams) + (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') + '\r\n'; }; // Parses the crypto key parameters into // https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam* -SDPUtils.parseCryptoKeyParams = function(keyParams) { +SDPUtils.parseCryptoKeyParams = function (keyParams) { if (keyParams.indexOf('inline:') !== 0) { return null; } @@ -5088,51 +3031,46 @@ SDPUtils.parseCryptoKeyParams = function(keyParams) { keySalt: parts[0], lifeTime: parts[1], mkiValue: parts[2] ? parts[2].split(':')[0] : undefined, - mkiLength: parts[2] ? parts[2].split(':')[1] : undefined, + mkiLength: parts[2] ? parts[2].split(':')[1] : undefined }; }; -SDPUtils.writeCryptoKeyParams = function(keyParams) { - return keyParams.keyMethod + ':' - + keyParams.keySalt + - (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') + - (keyParams.mkiValue && keyParams.mkiLength - ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength - : ''); +SDPUtils.writeCryptoKeyParams = function (keyParams) { + return keyParams.keyMethod + ':' + keyParams.keySalt + (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') + (keyParams.mkiValue && keyParams.mkiLength ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength : ''); }; -// Extracts all SDES paramters. -SDPUtils.getCryptoParameters = function(mediaSection, sessionpart) { - var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, - 'a=crypto:'); +// Extracts all SDES parameters. +SDPUtils.getCryptoParameters = function (mediaSection, sessionpart) { + var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=crypto:'); return lines.map(SDPUtils.parseCryptoLine); }; // Parses ICE information from SDP media section or sessionpart. // FIXME: for consistency with other functions this should only // get the ice-ufrag and ice-pwd lines as input. -SDPUtils.getIceParameters = function(mediaSection, sessionpart) { - var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart, - 'a=ice-ufrag:')[0]; - var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart, - 'a=ice-pwd:')[0]; +SDPUtils.getIceParameters = function (mediaSection, sessionpart) { + var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-ufrag:')[0]; + var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-pwd:')[0]; if (!(ufrag && pwd)) { return null; } return { usernameFragment: ufrag.substr(12), - password: pwd.substr(10), + password: pwd.substr(10) }; }; // Serializes ICE parameters to SDP. -SDPUtils.writeIceParameters = function(params) { - return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + - 'a=ice-pwd:' + params.password + '\r\n'; +SDPUtils.writeIceParameters = function (params) { + var sdp = 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + 'a=ice-pwd:' + params.password + '\r\n'; + if (params.iceLite) { + sdp += 'a=ice-lite\r\n'; + } + return sdp; }; // Parses the SDP media section and returns RTCRtpParameters. -SDPUtils.parseRtpParameters = function(mediaSection) { +SDPUtils.parseRtpParameters = function (mediaSection) { var description = { codecs: [], headerExtensions: [], @@ -5141,19 +3079,16 @@ SDPUtils.parseRtpParameters = function(mediaSection) { }; var lines = SDPUtils.splitLines(mediaSection); var mline = lines[0].split(' '); - for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..] + for (var i = 3; i < mline.length; i++) { + // find all codecs from mline[3..] var pt = mline[i]; - var rtpmapline = SDPUtils.matchPrefix( - mediaSection, 'a=rtpmap:' + pt + ' ')[0]; + var rtpmapline = SDPUtils.matchPrefix(mediaSection, 'a=rtpmap:' + pt + ' ')[0]; if (rtpmapline) { var codec = SDPUtils.parseRtpMap(rtpmapline); - var fmtps = SDPUtils.matchPrefix( - mediaSection, 'a=fmtp:' + pt + ' '); + var fmtps = SDPUtils.matchPrefix(mediaSection, 'a=fmtp:' + pt + ' '); // Only the first a=fmtp: is considered. codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {}; - codec.rtcpFeedback = SDPUtils.matchPrefix( - mediaSection, 'a=rtcp-fb:' + pt + ' ') - .map(SDPUtils.parseRtcpFb); + codec.rtcpFeedback = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-fb:' + pt + ' ').map(SDPUtils.parseRtcpFb); description.codecs.push(codec); // parse FEC mechanisms from rtpmap lines. switch (codec.name.toUpperCase()) { @@ -5161,12 +3096,13 @@ SDPUtils.parseRtpParameters = function(mediaSection) { case 'ULPFEC': description.fecMechanisms.push(codec.name.toUpperCase()); break; - default: // only RED and ULPFEC are recognized as FEC mechanisms. + default: + // only RED and ULPFEC are recognized as FEC mechanisms. break; } } } - SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) { + SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function (line) { description.headerExtensions.push(SDPUtils.parseExtmap(line)); }); // FIXME: parse rtcp. @@ -5175,14 +3111,14 @@ SDPUtils.parseRtpParameters = function(mediaSection) { // Generates parts of the SDP media section describing the capabilities / // parameters. -SDPUtils.writeRtpDescription = function(kind, caps) { +SDPUtils.writeRtpDescription = function (kind, caps) { var sdp = ''; // Build the mline. sdp += 'm=' + kind + ' '; sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs. sdp += ' UDP/TLS/RTP/SAVPF '; - sdp += caps.codecs.map(function(codec) { + sdp += caps.codecs.map(function (codec) { if (codec.preferredPayloadType !== undefined) { return codec.preferredPayloadType; } @@ -5193,13 +3129,13 @@ SDPUtils.writeRtpDescription = function(kind, caps) { sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n'; // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb. - caps.codecs.forEach(function(codec) { + caps.codecs.forEach(function (codec) { sdp += SDPUtils.writeRtpMap(codec); sdp += SDPUtils.writeFmtp(codec); sdp += SDPUtils.writeRtcpFb(codec); }); var maxptime = 0; - caps.codecs.forEach(function(codec) { + caps.codecs.forEach(function (codec) { if (codec.maxptime > maxptime) { maxptime = codec.maxptime; } @@ -5207,10 +3143,9 @@ SDPUtils.writeRtpDescription = function(kind, caps) { if (maxptime > 0) { sdp += 'a=maxptime:' + maxptime + '\r\n'; } - sdp += 'a=rtcp-mux\r\n'; if (caps.headerExtensions) { - caps.headerExtensions.forEach(function(extension) { + caps.headerExtensions.forEach(function (extension) { sdp += SDPUtils.writeExtmap(extension); }); } @@ -5220,42 +3155,39 @@ SDPUtils.writeRtpDescription = function(kind, caps) { // Parses the SDP media section and returns an array of // RTCRtpEncodingParameters. -SDPUtils.parseRtpEncodingParameters = function(mediaSection) { +SDPUtils.parseRtpEncodingParameters = function (mediaSection) { var encodingParameters = []; var description = SDPUtils.parseRtpParameters(mediaSection); var hasRed = description.fecMechanisms.indexOf('RED') !== -1; var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1; // filter a=ssrc:... cname:, ignore PlanB-msid - var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') - .map(function(line) { - return SDPUtils.parseSsrcMedia(line); - }) - .filter(function(parts) { - return parts.attribute === 'cname'; - }); + var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) { + return SDPUtils.parseSsrcMedia(line); + }).filter(function (parts) { + return parts.attribute === 'cname'; + }); var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc; - var secondarySsrc; + var secondarySsrc = void 0; - var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID') - .map(function(line) { - var parts = line.substr(17).split(' '); - return parts.map(function(part) { - return parseInt(part, 10); - }); + var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID').map(function (line) { + var parts = line.substr(17).split(' '); + return parts.map(function (part) { + return parseInt(part, 10); }); + }); if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) { secondarySsrc = flows[0][1]; } - description.codecs.forEach(function(codec) { + description.codecs.forEach(function (codec) { if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) { var encParam = { ssrc: primarySsrc, codecPayloadType: parseInt(codec.parameters.apt, 10) }; if (primarySsrc && secondarySsrc) { - encParam.rtx = {ssrc: secondarySsrc}; + encParam.rtx = { ssrc: secondarySsrc }; } encodingParameters.push(encParam); if (hasRed) { @@ -5281,12 +3213,11 @@ SDPUtils.parseRtpEncodingParameters = function(mediaSection) { bandwidth = parseInt(bandwidth[0].substr(7), 10); } else if (bandwidth[0].indexOf('b=AS:') === 0) { // use formula from JSEP to convert b=AS to TIAS value. - bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95 - - (50 * 40 * 8); + bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95 - 50 * 40 * 8; } else { bandwidth = undefined; } - encodingParameters.forEach(function(params) { + encodingParameters.forEach(function (params) { params.maxBitrate = bandwidth; }); } @@ -5294,18 +3225,16 @@ SDPUtils.parseRtpEncodingParameters = function(mediaSection) { }; // parses http://draft.ortc.org/#rtcrtcpparameters* -SDPUtils.parseRtcpParameters = function(mediaSection) { +SDPUtils.parseRtcpParameters = function (mediaSection) { var rtcpParameters = {}; - // Gets the first SSRC. Note tha with RTX there might be multiple + // Gets the first SSRC. Note that with RTX there might be multiple // SSRCs. - var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') - .map(function(line) { - return SDPUtils.parseSsrcMedia(line); - }) - .filter(function(obj) { - return obj.attribute === 'cname'; - })[0]; + var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) { + return SDPUtils.parseSsrcMedia(line); + }).filter(function (obj) { + return obj.attribute === 'cname'; + })[0]; if (remoteSsrc) { rtcpParameters.cname = remoteSsrc.value; rtcpParameters.ssrc = remoteSsrc.ssrc; @@ -5325,35 +3254,47 @@ SDPUtils.parseRtcpParameters = function(mediaSection) { return rtcpParameters; }; +SDPUtils.writeRtcpParameters = function (rtcpParameters) { + var sdp = ''; + if (rtcpParameters.reducedSize) { + sdp += 'a=rtcp-rsize\r\n'; + } + if (rtcpParameters.mux) { + sdp += 'a=rtcp-mux\r\n'; + } + if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) { + sdp += 'a=ssrc:' + rtcpParameters.ssrc + ' cname:' + rtcpParameters.cname + '\r\n'; + } + return sdp; +}; + // parses either a=msid: or a=ssrc:... msid lines and returns // the id of the MediaStream and MediaStreamTrack. -SDPUtils.parseMsid = function(mediaSection) { - var parts; +SDPUtils.parseMsid = function (mediaSection) { + var parts = void 0; var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:'); if (spec.length === 1) { parts = spec[0].substr(7).split(' '); - return {stream: parts[0], track: parts[1]}; + return { stream: parts[0], track: parts[1] }; } - var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') - .map(function(line) { - return SDPUtils.parseSsrcMedia(line); - }) - .filter(function(msidParts) { - return msidParts.attribute === 'msid'; - }); + var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) { + return SDPUtils.parseSsrcMedia(line); + }).filter(function (msidParts) { + return msidParts.attribute === 'msid'; + }); if (planB.length > 0) { parts = planB[0].value.split(' '); - return {stream: parts[0], track: parts[1]}; + return { stream: parts[0], track: parts[1] }; } }; // SCTP // parses draft-ietf-mmusic-sctp-sdp-26 first and falls back // to draft-ietf-mmusic-sctp-sdp-05 -SDPUtils.parseSctpDescription = function(mediaSection) { +SDPUtils.parseSctpDescription = function (mediaSection) { var mline = SDPUtils.parseMLine(mediaSection); var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:'); - var maxMessageSize; + var maxMessageSize = void 0; if (maxSizeLine.length > 0) { maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10); } @@ -5370,9 +3311,7 @@ SDPUtils.parseSctpDescription = function(mediaSection) { } var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:'); if (sctpMapLines.length > 0) { - var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0] - .substr(10) - .split(' '); + var parts = sctpMapLines[0].substr(10).split(' '); return { port: parseInt(parts[0], 10), protocol: parts[1], @@ -5386,20 +3325,12 @@ SDPUtils.parseSctpDescription = function(mediaSection) { // support by now receiving in this format, unless we originally parsed // as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line // protocol of DTLS/SCTP -- without UDP/ or TCP/) -SDPUtils.writeSctpDescription = function(media, sctp) { +SDPUtils.writeSctpDescription = function (media, sctp) { var output = []; if (media.protocol !== 'DTLS/SCTP') { - output = [ - 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\r\n', - 'c=IN IP4 0.0.0.0\r\n', - 'a=sctp-port:' + sctp.port + '\r\n' - ]; + output = ['m=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\r\n', 'c=IN IP4 0.0.0.0\r\n', 'a=sctp-port:' + sctp.port + '\r\n']; } else { - output = [ - 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\r\n', - 'c=IN IP4 0.0.0.0\r\n', - 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\r\n' - ]; + output = ['m=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\r\n', 'c=IN IP4 0.0.0.0\r\n', 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\r\n']; } if (sctp.maxMessageSize !== undefined) { output.push('a=max-message-size:' + sctp.maxMessageSize + '\r\n'); @@ -5411,17 +3342,17 @@ SDPUtils.writeSctpDescription = function(media, sctp) { // https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1 // recommends using a cryptographically random +ve 64-bit value // but right now this should be acceptable and within the right range -SDPUtils.generateSessionId = function() { +SDPUtils.generateSessionId = function () { return Math.random().toString().substr(2, 21); }; -// Write boilder plate for start of SDP +// Write boiler plate for start of SDP // sessId argument is optional - if not supplied it will // be generated randomly // sessVersion is optional and defaults to 2 // sessUser is optional and defaults to 'thisisadapterortc' -SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) { - var sessionId; +SDPUtils.writeSessionBoilerplate = function (sessId, sessVer, sessUser) { + var sessionId = void 0; var version = sessVer !== undefined ? sessVer : 2; if (sessId) { sessionId = sessId; @@ -5430,69 +3361,11 @@ SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) { } var user = sessUser || 'thisisadapterortc'; // FIXME: sess-id should be an NTP timestamp. - return 'v=0\r\n' + - 'o=' + user + ' ' + sessionId + ' ' + version + - ' IN IP4 127.0.0.1\r\n' + - 's=-\r\n' + - 't=0 0\r\n'; -}; - -SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) { - var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); - - // Map ICE parameters (ufrag, pwd) to SDP. - sdp += SDPUtils.writeIceParameters( - transceiver.iceGatherer.getLocalParameters()); - - // Map DTLS parameters to SDP. - sdp += SDPUtils.writeDtlsParameters( - transceiver.dtlsTransport.getLocalParameters(), - type === 'offer' ? 'actpass' : 'active'); - - sdp += 'a=mid:' + transceiver.mid + '\r\n'; - - if (transceiver.direction) { - sdp += 'a=' + transceiver.direction + '\r\n'; - } else if (transceiver.rtpSender && transceiver.rtpReceiver) { - sdp += 'a=sendrecv\r\n'; - } else if (transceiver.rtpSender) { - sdp += 'a=sendonly\r\n'; - } else if (transceiver.rtpReceiver) { - sdp += 'a=recvonly\r\n'; - } else { - sdp += 'a=inactive\r\n'; - } - - if (transceiver.rtpSender) { - // spec. - var msid = 'msid:' + stream.id + ' ' + - transceiver.rtpSender.track.id + '\r\n'; - sdp += 'a=' + msid; - - // for Chrome. - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + - ' ' + msid; - if (transceiver.sendEncodingParameters[0].rtx) { - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + - ' ' + msid; - sdp += 'a=ssrc-group:FID ' + - transceiver.sendEncodingParameters[0].ssrc + ' ' + - transceiver.sendEncodingParameters[0].rtx.ssrc + - '\r\n'; - } - } - // FIXME: this should be written by writeRtpDescription. - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + - ' cname:' + SDPUtils.localCName + '\r\n'; - if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + - ' cname:' + SDPUtils.localCName + '\r\n'; - } - return sdp; + return 'v=0\r\n' + 'o=' + user + ' ' + sessionId + ' ' + version + ' IN IP4 127.0.0.1\r\n' + 's=-\r\n' + 't=0 0\r\n'; }; // Gets the direction from the mediaSection or the sessionpart. -SDPUtils.getDirection = function(mediaSection, sessionpart) { +SDPUtils.getDirection = function (mediaSection, sessionpart) { // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv. var lines = SDPUtils.splitLines(mediaSection); for (var i = 0; i < lines.length; i++) { @@ -5503,7 +3376,7 @@ SDPUtils.getDirection = function(mediaSection, sessionpart) { case 'a=inactive': return lines[i].substr(2); default: - // FIXME: What should happen here? + // FIXME: What should happen here? } } if (sessionpart) { @@ -5512,17 +3385,17 @@ SDPUtils.getDirection = function(mediaSection, sessionpart) { return 'sendrecv'; }; -SDPUtils.getKind = function(mediaSection) { +SDPUtils.getKind = function (mediaSection) { var lines = SDPUtils.splitLines(mediaSection); var mline = lines[0].split(' '); return mline[0].substr(2); }; -SDPUtils.isRejected = function(mediaSection) { +SDPUtils.isRejected = function (mediaSection) { return mediaSection.split(' ', 2)[1] === '0'; }; -SDPUtils.parseMLine = function(mediaSection) { +SDPUtils.parseMLine = function (mediaSection) { var lines = SDPUtils.splitLines(mediaSection); var parts = lines[0].substr(2).split(' '); return { @@ -5533,7 +3406,7 @@ SDPUtils.parseMLine = function(mediaSection) { }; }; -SDPUtils.parseOLine = function(mediaSection) { +SDPUtils.parseOLine = function (mediaSection) { var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0]; var parts = line.substr(2).split(' '); return { @@ -5547,7 +3420,7 @@ SDPUtils.parseOLine = function(mediaSection) { }; // a very naive interpretation of a valid SDP. -SDPUtils.isValidSDP = function(blob) { +SDPUtils.isValidSDP = function (blob) { if (typeof blob !== 'string' || blob.length === 0) { return false; } @@ -5562,9 +3435,8 @@ SDPUtils.isValidSDP = function(blob) { }; // Expose public methods. -if (typeof module === 'object') { +if ((typeof module === 'undefined' ? 'undefined' : _typeof(module)) === 'object') { module.exports = SDPUtils; } - },{}]},{},[1])(1) -}); \ No newline at end of file +}); diff --git a/lib/thirdpartylibs.xml b/lib/thirdpartylibs.xml index 7f9d7d3a24b..4cc444b5349 100644 --- a/lib/thirdpartylibs.xml +++ b/lib/thirdpartylibs.xml @@ -266,7 +266,7 @@ amd/src/adapter.js WebRTC adapter BSD - 7.4.0 + 8.0.0 3-Clause