The server is not awaiting different video SSRCs from the single participant. Unified Plan makes Firefox to add extra m-section to local SDP with "recvonly" attribute for other participants then the first one. (Logically they are could not be needed at all; the browser have to send single audio and sigle video stream to the server, and that's all). Despite of "recvonly" attribute, the Firefox, being a single participant from the server's point of view, sends RTCPs with different SenderSSRC (pointed in that "recvonly" m-sections a=ssrc attributes), which is unsupported by the media server.
So, Firefox acts as if it uses different RTP sessions for each peer, but actually it works inside a single multi-party RTP session. I don't need to replace ssrcs for real RTP streams, but need it for RTCP RR packets. On Monday, February 22, 2016 at 5:12:17 PM UTC+3, Byron Campen wrote: > On 2/22/16 8:00 AM, Alexander Abagian wrote: > > Is it possible to force Firefox to use the same SSRC of the same media type > > for each participant ? > No, because if we did that we would be breaking spec pretty badly; > the whole point of an SSRC is to have a unique identifier, and lots of > stuff breaks if they aren't unique (including compromising the security > of SRTP). > > What problem are you trying to solve here? > > Best regards, > Byron Campen _______________________________________________ dev-media mailing list [email protected] https://lists.mozilla.org/listinfo/dev-media
