RTSP UDP->TCP failover inconsistency #11069

Hi, this is related to #9884

ExoPlayer has a feature with RTSP that if a UDP stream isn't received within a few seconds, it'll try again with TCP (Good feature)

If the server tells ExoPlayer that a UDP stream isn't available, and "RTSP/1.0 461 Unsupported Transport", it will NOT try TCP

Where this becomes a problem: If WMPlayer connects to a server with UDP available, and it doesn't receive a stream within a few seconds, it doesn't failover to TCP

I can do a work-around to tell WMPlayer clients that UDP is unavailable as a transport based on the User-Agent, but this does leave ExoPlayer clients waiting a few more seconds for video to start.

• VRChat
• AVPro (video widget)
• Windows Media API or ExoPlayer depending on platform

Is there a reason to not understand the "Unsupported Transport" response? I notice that a LibVLC supports this.