Update app.py

app.py

@@ -2,7 +2,29 @@ from streamlit_webrtc import webrtc_streamer
 webrtc_streamer(key="example",
     # ...
     rtc_configuration={  # Add this config
-        "iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}]
+        "iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}, {
+        urls: "stun:stun.relay.metered.ca:80",
+      },
+      {
+        urls: "turn:a.relay.metered.ca:80",
+        username: "1569e470fe2a2afdb9e2b963",
+        credential: "EG59c3tmBQzU7mMw",
+      },
+      {
+        urls: "turn:a.relay.metered.ca:80?transport=tcp",
+        username: "1569e470fe2a2afdb9e2b963",
+        credential: "EG59c3tmBQzU7mMw",
+      },
+      {
+        urls: "turn:a.relay.metered.ca:443",
+        username: "1569e470fe2a2afdb9e2b963",
+        credential: "EG59c3tmBQzU7mMw",
+      },
+      {
+        urls: "turn:a.relay.metered.ca:443?transport=tcp",
+        username: "1569e470fe2a2afdb9e2b963",
+        credential: "EG59c3tmBQzU7mMw",
+      }]
     }
     # ...
 )