feat: Dynamically fetch TURN credentials, improve WebRTC connection stability with ICE restart logic, and configure TURN via environment variables.

server.js

@@ -7,8 +7,15 @@ const io = new Server(server);
 
 // Password setting via environment variable, defaulting to "secret"
 const BROADCASTER_PASSWORD = process.env.BROADCASTER_PASSWORD;
+const TURN_USER = process.env.TURN_USER || 'myuser';
+const TURN_PASSWORD = process.env.TURN_PASSWORD || 'mypassword';
 let broadcasterSocketId = null;
 
+// Serve TURN credentials to clients
+app.get('/turn-config', (req, res) => {
+    res.json({ username: TURN_USER, credential: TURN_PASSWORD });
+});
+
 app.use(express.static("public"));
 
 io.on("connection", (socket) => {