Re: [rtcweb] JSEP and ice-pacing attribute
Christer Holmberg <christer.holmberg@ericsson.com> Wed, 31 July 2019 06:02 UTC
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Harald Alvestrand <harald@alvestrand.no>, "rtcweb@ietf.org" <rtcweb@ietf.org>
Thread-Topic: [rtcweb] JSEP and ice-pacing attribute
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Date: Wed, 31 Jul 2019 06:02:26 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/rtcweb/e7OQFsWt2qRjTQ9QqJQxgF_HHVc>
Subject: Re: [rtcweb] JSEP and ice-pacing attribute
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Hi Harald, >> I noted that JSEP does not specify the usage of the ice-pacing >> attribute. Is there a reason for that? It does explicitly specify how >> all the other ICE related SDP attributes are used. > > I think we overlooked it. > > "ice-pacing" was introduced in draft-ietf-mmusic-ice-sip-sdp-03 (July 2014), so we can't claim > it's because it's too new..... JSEP was only at its version -07 at that time. > > According to RFC 8445 section 14.2, this attribute sets the value of the Ta timer (or at least this > is the only interpretation that I can see that makes sense). Correct. > According to draft-ietf-mmusic-ice-sip-sdp-36, "ice-pacing" only allows increasing the value of Ta > to a value larger than its default (50 ms) (while 8445 seems to indicate that a single agent can go > all the way down to 5 ms, but not lower). I gave the exact same comment some time ago, wrote a PR about it, and it has now been fixed in -37, that was submitted yesterday :) Regards, Christer
- [rtcweb] JSEP and ice-pacing attribute Christer Holmberg
- Re: [rtcweb] JSEP and ice-pacing attribute Harald Alvestrand
- Re: [rtcweb] JSEP and ice-pacing attribute Justin Uberti
- Re: [rtcweb] JSEP and ice-pacing attribute Christer Holmberg
- Re: [rtcweb] JSEP and ice-pacing attribute Christer Holmberg