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| # Copied from streamlit-webrtc/sample_utils/turn.py | |
| import logging | |
| import os | |
| import streamlit as st | |
| from twilio.rest import Client | |
| logger = logging.getLogger(__name__) | |
| # type: ignore | |
| def get_ice_servers(): | |
| """Use Twilio's TURN server because Streamlit Community Cloud has changed | |
| its infrastructure and WebRTC connection cannot be established without TURN server now. # noqa: E501 | |
| We considered Open Relay Project (https://www.metered.ca/tools/openrelay/) too, | |
| but it is not stable and hardly works as some people reported like https://github.com/aiortc/aiortc/issues/832#issuecomment-1482420656 # noqa: E501 | |
| See https://github.com/whitphx/streamlit-webrtc/issues/1213 | |
| """ | |
| # Ref: https://www.twilio.com/docs/stun-turn/api | |
| try: | |
| account_sid = os.environ["TWILIO_ACCOUNT_SID"] | |
| auth_token = os.environ["TWILIO_AUTH_TOKEN"] | |
| except KeyError: | |
| logger.warning( | |
| "Twilio credentials are not set. Fallback to a free STUN server from Google." # noqa: E501 | |
| ) | |
| return [{"urls": ["stun:stun.l.google.com:19302"]}] | |
| client = Client(account_sid, auth_token) | |
| token = client.tokens.create() | |
| return token.ice_servers | |