From 83dc910624ba9c03efc1b5401c97293f7836e0f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=27=C3=A9lectron=20rare?=
 <108685187+electron-rare@users.noreply.github.com>
Date: Fri, 26 Jun 2026 19:43:57 +0200
Subject: [PATCH] fix(sound): recover port 57121 from zombie on boot
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The data-only boot opened the OSC receive port 57121 but fell back
silently to the lang port when it was busy — so /pose (data_only_viz)
and /data (data_feeds bridge), both sent to 57121, never reached
sclang and the patch looked alive but reacted to nothing. The port is
typically squatted by a zombie: a scsynth or data_feeds bridge launched
by a previous boot via unixCmd inherits the 57121 socket FD and outlives
its sclang parent, so a fresh boot can't bind it. Instead of falling
back, free the stale holder (lsof -ti UDP:57121 | xargs kill -9) and
retry openUDPPort. Verified: a planted zombie on 57121 is killed and the
port recovered on boot ("57121 recupere — sclang listening on 57121").
---
 sound_algo/data_only/boot.scd | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/sound_algo/data_only/boot.scd b/sound_algo/data_only/boot.scd
index 32a1144..cc60a11 100644
--- a/sound_algo/data_only/boot.scd
+++ b/sound_algo/data_only/boot.scd
@@ -92,13 +92,24 @@
 Routine({
     var maxWait, waited;
 
-    // Ouvre le port 57121 pour recevoir les /control/* du launcher et
-    // de tout client externe (cf OSCSender swift). Echec silencieux
-    // si le port est deja pris (ex: web bridge actif) — dans ce cas
-    // sclang reste sur son langPort par defaut.
+    // Ouvre le port 57121 pour recevoir /control/* (launcher), /pose/* et
+    // /data/* (data_only_viz + data_feeds bridge). Si le port est pris,
+    // c'est presque toujours un holder zombie : un scsynth/bridge orphelin
+    // d'un sclang precedent qui a herite le socket 57121 via unixCmd et a
+    // survecu a son parent. On le libere et on reessaie, plutot que de
+    // fallback silencieusement (les /pose/data n'arriveraient jamais sur le
+    // langPort de repli).
     if(thisProcess.openUDPPort(57121).not) {
-        ("[data-only/boot] WARN: port 57121 occupe, fallback sur langPort = "
-         ++ NetAddr.langPort).postln;
+        "[data-only/boot] 57121 occupe — liberation du holder zombie...".postln;
+        "lsof -ti UDP:57121 | xargs kill -9 2>/dev/null".unixCmd;
+        0.5.wait;
+        if(thisProcess.openUDPPort(57121).not) {
+            ("[data-only/boot] WARN: 57121 toujours occupe, fallback sur langPort = "
+             ++ NetAddr.langPort).postln;
+        } {
+            ("[data-only/boot] 57121 recupere — sclang listening on "
+             ++ NetAddr.langPort ++ " + 57121").postln;
+        };
     } {
         ("[data-only/boot] sclang listening on " ++ NetAddr.langPort ++ " + 57121").postln;
     };