Bring your own TURN servers #409

You can now use any custom TURN server with LiveKit, including third-party TURN services. By setting rtc.turn_servers in the config, LiveKit will configure all connected clients to use specified TURN servers.

Bugfixes and improvements

• Fixed deadlock causing underlying buffer to become full #413
• Disabled SRTP replay protection to improve Firefox compatibility #394
• Improve connection reliability over links with longer latency #405
• Lower DTLS retransmission interval to improve initial connection speed #414
• Disable use of ICELite by default #397 #408
• Smoother dynamic broadcast transition #389
• Thread safety with map traversal #388
• Use a single buffered channel for RTCP messages #418
• Use message versions to better prevent race #399
• Simplification/improvement of sfu.Buffer #398 #402
• Improved context with logging #391 #416