Some of our customers have problem connecting using Webrtc even using relay. We enabled turn relay over TLS on port 443 but it still fails.
However, their device can connect to our server via Websocket. Moreover, customer said their Internet browsing is ok.
How can websocket be working but TURN over TLS 443 be not?
My theory is that the customer is in deep intranet and they can only connect to Internet via a http proxy, which allows websocket but not TURN over 443. Is that possible? How do I counter this circumstances? Thanks.