Re: [rtcweb] Reducing glare
Iñaki Baz Castillo <ibc@aliax.net> Tue, 09 July 2013 10:40 UTC
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From: Iñaki Baz Castillo <ibc@aliax.net>
Date: Tue, 09 Jul 2013 12:40:27 +0200
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To: "Dale R. Worley" <worley@ariadne.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Reducing glare
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2013/5/10 Dale R. Worley <worley@ariadne.com>: > Two possible solutions for glare problems come to mind: > > One is to require the designated "follower" to accept and give a 200 > response to an incoming re-INVITE even if it has an outstanding > re-INVITE. The difficulty that follows is that the follower doesn't > know whether the "leader" has accepted or rejected its re-INVITE until > the response arrives, so there is an interval (between sending the 200 > to the leader's re-INVITE and receiving the leaders response to its > re-INVITE) during which the follower doesn't know its outgoing media > configuration. We could probably fix that by annotating the leader's > offers with the o= value of the follower's SDP that the leader > currently is using. > > A second one would be to simply drastically shorten the glare backoff > timer. Given that we're talking about video systems, the RFC 3261 > timer ranges of 0 to 2 secs and 2.1 to 4 secs are very slow. If we > cut those times by a factor of 10, wouldn't the user-visible problems > nearly vanish? A third and better solution would be to stop assuming that SIP problems are also WebRTC problems. The "glare" problem occurs due to the artificial mandate of SDP O/A in WebRTC. Want to avoid the "glare" problem and "SDP v=" number problem? Remove SDP O/A from WebRTC and you are done. Then if somebody wants to play with SDP at JS it can do it **at JS level**. -- Iñaki Baz Castillo <ibc@aliax.net>
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Paul Kyzivat
- [rtcweb] Quick comments on draft-roach-rtcweb-gla… Ted Hardie
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Adam Roach
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Ted Hardie
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Adam Roach
- [rtcweb] Glare in draft-roach-rtcweb-glareless-ad… Dale R. Worley
- Re: [rtcweb] Glare in draft-roach-rtcweb-glareles… Adam Roach
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Adam Roach
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Paul Kyzivat
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Adam Roach
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Paul Kyzivat
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Stefan Håkansson LK
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Cullen Jennings
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Dale R. Worley
- [rtcweb] Reducing glare Dale R. Worley
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Paul Kyzivat
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Paul Kyzivat
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Stefan Håkansson LK
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Paul Kyzivat
- Re: [rtcweb] [MMUSIC] Quick comments on draft-roa… Bernard Aboba
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Stefan Håkansson LK
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Emil Ivov
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Stefan Håkansson LK
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Emil Ivov
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Bernard Aboba
- Re: [rtcweb] Quick comments on draft-roach-rtcweb… Stefan Håkansson LK
- Re: [rtcweb] [MMUSIC] Quick comments on draft-roa… Emil Ivov
- Re: [rtcweb] [MMUSIC] Quick comments on draft-roa… Harald Alvestrand
- Re: [rtcweb] [MMUSIC] Quick comments on draft-roa… Stefan Håkansson LK
- Re: [rtcweb] Glare in draft-roach-rtcweb-glareles… Christer Holmberg
- Re: [rtcweb] Glare in draft-roach-rtcweb-glareles… Iñaki Baz Castillo
- Re: [rtcweb] Reducing glare Iñaki Baz Castillo