If STUN does not work, it tries TURN. If TURN does not work, you're not connected to the Internet. https://www.webrtc-experiment.com/docs/STUN-or-TURN.html htt

If STUN does not work, it tries TURN. If TURN does not work, you're not connected to the Internet. https://www.webrtc-experiment.com/docs/STUN-or-TURN.html https://www.webrtc-experiment.com/docs/STUN-or-TURN.html