Harden call socket lifecycle and ICE fallback set (v2.6.6)

client.js

@@ -549,7 +549,12 @@ function switchAccount() {
 
 
 function connectSocket() {
-    // Prevent multiple active socket connections/listeners that can duplicate signaling events.
+    // Reuse existing active socket to avoid duplicating/disrupting signaling during calls.
+    if (socket && (socket.connected || socket.active)) {
+        return;
+    }
+
+    // Cleanup stale socket before creating a new one.
     if (socket) {
         try {
             socket.removeAllListeners();
@@ -6175,6 +6180,22 @@ function createPeerConnection(peerId) {
                 username: 'openrelayproject',
                 credential: 'openrelayproject'
             },
+            // openrelay public TURN (legacy hostname fallback)
+            {
+                urls: 'turn:openrelay.metered.ca:80',
+                username: 'openrelayproject',
+                credential: 'openrelayproject'
+            },
+            {
+                urls: 'turn:openrelay.metered.ca:443',
+                username: 'openrelayproject',
+                credential: 'openrelayproject'
+            },
+            {
+                urls: 'turn:openrelay.metered.ca:443?transport=tcp',
+                username: 'openrelayproject',
+                credential: 'openrelayproject'
+            },
             // numb.viagenie free TURN fallback
             {
                 urls: 'turn:numb.viagenie.ca',

index.html

@@ -3048,7 +3048,7 @@
                     <div class="chat-header-title" id="chatTitle">💬 Select a friend to chat</div>
                 </div>
                 <div class="chat-header-actions">
-                    <span class="build-badge mobile-essential" id="buildVersionBadge" title="Frontend build version">v2.6.5</span>
+                    <span class="build-badge mobile-essential" id="buildVersionBadge" title="Frontend build version">v2.6.6</span>
                     <button class="header-btn mobile-essential" onclick="toggleArchiveChat()" title="Archive chat">
                         <i class="fas fa-archive"></i>
                     </button>
@@ -3665,7 +3665,7 @@
 
     <script src="/socket.io/socket.io.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/qrcodejs/1.0.0/qrcode.min.js"></script>
-    <script src="client.js?v=2.6.2"></script>
+    <script src="client.js?v=2.6.6"></script>
 </body>
 </html>
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "discord-like-app",
-  "version": "2.6.5",
+  "version": "2.6.6",
   "main": "server.js",
   "scripts": {
     "dev": "nodemon server.js",