docs(app): add support for custom turn port and fix docker networking

The current TURN configuration defaults to port 3478 but doesn't allow customization for the port. In Docker Compose setups, the TURN server may be on a different port or host. Additionally, the current configuration doesn't properly handle TLS vs non-TLS TURN connections.

Affected files: route.ts

Signed-off-by: hieuit095 <139037144+hieuit095@users.noreply.github.com>

src/app/api/ice/route.ts

@@ -3,6 +3,8 @@ import crypto from 'crypto'
 import { setTurnCredentials } from '../../../coturn'
 
 const turnHost = process.env.TURN_HOST || '127.0.0.1'
+const turnPort = parseInt(process.env.TURN_PORT || '3478', 10)
+const turnTlsPort = parseInt(process.env.TURN_TLS_PORT || '5349', 10)
 const stunServer = process.env.STUN_SERVER || 'stun:stun.l.google.com:19302'
 const peerjsHost = process.env.PEERJS_HOST || '0.peerjs.com'
 const peerjsPath = process.env.PEERJS_PATH || '/'
@@ -24,16 +26,16 @@ export async function POST(): Promise<NextResponse> {
   // Store credentials in Redis
   await setTurnCredentials(username, password, ttl)
 
+  const iceServers: { urls: string; username?: string; credential?: string }[] = [
+    { urls: stunServer },
+    { urls: `turn:${turnHost}:${turnPort}`, username, credential: password },
+    { urls: `turn:${turnHost}:${turnPort}?transport=tcp`, username, credential: password },
+    { urls: `turns:${turnHost}:${turnTlsPort}?transport=tcp`, username, credential: password },
+  ]
+
   return NextResponse.json({
     host: peerjsHost,
     path: peerjsPath,
-    iceServers: [
-      { urls: stunServer },
-      {
-        urls: [`turn:${turnHost}:3478`, `turns:${turnHost}:5349`],
-        username,
-        credential: password,
-      },
-    ],
+    iceServers,
   })
 }