[Standards] XEP-0167: What happened with <rtcp-mux/>

Philipp Hancke fippo at goodadvice.pages.de
Mon Apr 13 14:22:42 UTC 2020

Am 13.04.20 um 13:21 schrieb Daniel Gultsch:
> Hi,
> webrtc uses rtcp-mux but to my knowledge XMPP has no way of signaling
> that a party wants to use that.
> Jitsi apparently just assumes that rtcp-mux is being used when bundles
> are used [1] however that isn’t necessarily correct in all cases.

That is colibri extensions for the channel bundle, which is different 
from BUNDLE even.

> Philipp Hancke apparently wrote a patch for XEP-0167 that introduced
> <rtcp-mux/> as an element in the description (based on what Google
> did) in 2014 [2]. However apparently that didn’t get merged.

I remember sitting on a couch with Peter and discussing all those issues 
but it seems we forgot to turn the discussion into a PR.
stanzaio probably contaisns the most up-to-date mapping.

> Anyone remember why? Was this just forgotten or was this replaced with
> something else? Or deemed unnecessary for some reason?
> If not I'd just create a new PR with that old patch.

Please do! Thank you

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