From 65f45647a69aedbb07f62f7f5991383b7e1a63ce Mon Sep 17 00:00:00 2001
From: Xin Wang <your-email@example.com>
Date: Tue, 21 Jul 2026 20:34:02 +0800
Subject: [PATCH] Update RTC configuration to use TURN only and replace STUN
 server URLs with a specific TURN server address.

---
 www/js/main.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/www/js/main.js b/www/js/main.js
index fcf721f..75d261f 100644
--- a/www/js/main.js
+++ b/www/js/main.js
@@ -14,9 +14,10 @@
 
 const $self = {
   rtcConfig: {
+    iceTransportPolicy: 'relay', // TURN only
     iceServers: [
-      { urls: 'stun:stun.l.google.com:19302' },
-      { urls: 'stun:stun1.l.google.com:19302' },
+      // { urls: 'stun:stun.l.google.com:19302' },
+      // { urls: 'stun:stun1.l.google.com:19302' },
     ],
   },
   mediaConstraints: { audio: true, video: true },
@@ -630,7 +631,7 @@ function handleScConnectedPeers({ peers, credentials }) {
   console.log(`Connected peer IDs: ${ids.join(', ')}`);
 
   console.log(`TURN Credentials: ${JSON.stringify(credentials)}`);
-  // addCredentialedTurnServer('turn:coturn.example.com:3478', credentials);
+  addCredentialedTurnServer('turn:182.92.86.220:3478', credentials);
 
   for (let id of ids) {
     if (id === $self.id) continue;