added STUN

tools/webcam.py

@@ -2,11 +2,17 @@ import streamlit as st
 from streamlit_webrtc import webrtc_streamer, WebRtcMode
 
 
+RTC_CONFIGURATION = RTCConfiguration(
+    {"iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}]}
+)
+
+
 @st.cache_resource(experimental_allow_widgets=True)
 def init_webcam(width=680):
     ctx = webrtc_streamer(
         key="FaceIDAppDemo",
         mode=WebRtcMode.SENDONLY,
+        rtc_configuration=RTC_CONFIGURATION,
         media_stream_constraints={
             "video": {
                 "width": {
@@ -17,6 +23,7 @@ def init_webcam(width=680):
             },
             "audio": False,
         },
+
         video_receiver_size=1,
         async_processing=True,
     )