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"><div>Dear LIVE555 developers,</div><div> </div><div>I am testing RTSP server behavior in LIVE555 and would like to confirm whether the following behavior is intended.</div><div> </div><div>Tested target:</div><div> LIVE555 Streaming Media version: 2026.07.08<br> Target: testOnDemandRTSPServer</div><div> </div><div>The request is:</div><div> SETUP rtsp://127.0.0.1:8554/wavAudioTest RTSP/1.0<br> CSeq: 10<br> Transport: RTP/AVP/TCP;unicast</div><div> </div><div>My understanding of RFC 7826 Appendix C.2.2 is that RTP/AVP/TCP without the interleaved parameter indicates RTP over independent TCP connections, not RTP interleaved over the RTSP control connection.</div><div> </div><div>However, LIVE555 responds with:</div><div> RTSP/1.0 200 OK<br> CSeq: 10<br> Transport: RTP/AVP/TCP;unicast;destination=127.0.0.1;source=127.0.0.1;interleaved=0-1<br> Session: 06C35743;timeout=65</div><div> </div><div>Then, without establishing any independent RTP/RTCP TCP connection, a subsequent PLAY returns:</div><div> RTSP/1.0 200 OK<br> CSeq: 11<br> Range: npt=0.000-<br> Session: 06C35743<br> RTP-Info: url=rtsp://127.0.0.1:8554/wavAudioTest/track1;seq=0;rtptime=0</div><div>I repeated this locally 20 times, and the behavior was stable: the server always added interleaved=0-1, created asession, and accepted PLAY.</div><div> </div><div>Could you please confirm whether this is intentional compatibility behavior, or whether RTP/AVP/TCP;unicast without interleaved should instead be handled as independent TCP transport? </div><div>From my reading, if independent TCP is accepted, the response should not add interleaved; and if the RTP/RTCP TCP connections have not been established, PLAY should receive 464 Data Transport Not Ready Yet.</div><div><br data-mce-bogus="1"></div><div>Best regards,</div><div>Bocheng Cao</div><span data-mce-type="bookmark" id="mce_1_start" data-mce-style="overflow:hidden;line-height:0px" style="overflow: hidden; line-height: 0px;"></span><br></div><div style="font-family:Source Han Sans;font-size:14px;line-height:1.5;
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