From d2509602595422f80a1e3eaa835201671a4b6b3a Mon Sep 17 00:00:00 2001
From: Mathieu Carbou <mathieu.carbou@gmail.com>
Date: Tue, 12 Nov 2024 18:24:53 +0100
Subject: [PATCH] Fix: Required to lock TCPIP core functionality See:
 https://github.com/espressif/arduino-esp32/issues/10526#issuecomment-2471122550

---
 src/AsyncTCP.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/AsyncTCP.cpp b/src/AsyncTCP.cpp
index 595ae2f..21755f4 100644
--- a/src/AsyncTCP.cpp
+++ b/src/AsyncTCP.cpp
@@ -1531,9 +1531,11 @@ void AsyncServer::end(){
         TCP_MUTEX_LOCK();
         tcp_arg(_pcb, NULL);
         tcp_accept(_pcb, NULL);
-        TCP_MUTEX_UNLOCK();
         if(tcp_close(_pcb) != ERR_OK){
+            TCP_MUTEX_UNLOCK();
             _tcp_abort(_pcb, -1);
+        } else {
+            TCP_MUTEX_UNLOCK();
         }
         _pcb = NULL;
     }