From c174f6c4674cb3f3892915a65a21c4e4f7f98d30 Mon Sep 17 00:00:00 2001
From: Mathieu Carbou <mathieu.carbou@gmail.com>
Date: Thu, 4 Jul 2024 12:27:36 +0200
Subject: [PATCH] Try fix from
 https://github.com/me-no-dev/AsyncTCP/pull/173/files#r1581612715

---
 src/AsyncTCP.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/AsyncTCP.cpp b/src/AsyncTCP.cpp
index 4b61573..bd768a0 100644
--- a/src/AsyncTCP.cpp
+++ b/src/AsyncTCP.cpp
@@ -439,7 +439,7 @@ static esp_err_t _tcp_write(tcp_pcb * pcb, int8_t closed_slot, const char* data,
 static err_t _tcp_recved_api(struct tcpip_api_call_data *api_call_msg){
     tcp_api_call_t * msg = (tcp_api_call_t *)api_call_msg;
     msg->err = ERR_CONN;
-    if(msg->closed_slot == -1 || !_closed_slots[msg->closed_slot]) {
+    if(msg->closed_slot != -1 || !_closed_slots[msg->closed_slot]) {
         msg->err = 0;
         tcp_recved(msg->pcb, msg->received);
     }