Query: Tests for using "no SSRC signalled" SDP?

[Harald Alvestrand]

This came up in a discussion....

in the RTCWEB WG, we spent a lot of time making sure it was possible to operate without telling the other guy what your SSRCs were ahead of time, because this was important for interworking with various stuff that allocated SSRCs "late in the game".

Now .... is anyone using that functionality now, in an operational WebRTC-based service where they set up connections without signalling SSRCs before sending data in at least one direction?

I'm not convinced anything in web-platform-tests will test this, but arguably it should. Perhaps someone has a nice little test to offer?

Harald

[Nils Ohlmeier]

I think the reason this is not tested in WPT is that WebRTC.org code base requires SSRC in all kind of places. In Firefox we generate fake SSRC in multiple places to replace them later with the real SSRC. Note: Firefox is not using the latest WebRTC.org, and I haven’t looked at the latest code.

But the way how the code based used by the majority of the web browsers enforces SSRC is hindering any deployment off SSRC free solutions (assuming the service wants/needs interop with browsers).

Best
Nils Ohlmeier