IETF
rtcweb@jabber.ietf.org
Wednesday, March 25, 2015< ^ >
martin.thomson has set the subject to: RTCWEB WG http://tools.ietf.org/wg/rtcweb/agenda
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[18:02:49] <Randell Jesup> Can hear/see you on meetecho (at least the chairs)
[18:02:51] <Magnus Westerlund> Hello, I am your designated jabber relay. So if you like anything repeated on the microphone, please prefix with "mic:"
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[18:17:49] <Paul Kyzivat> mic: as a browser user I want the ability to choose "one time" or "persistent".
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[18:37:50] <Jonathan Lennox> I don't believe the title of this slide.
[18:38:53] <Ross Finlayson> Perhaps the empty set :-)
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[18:46:39] <Paul Kyzivat> mic: syntax of attributes presents issues. The abnf of 4566 doesn't specify syntax of particular attributes. 4566bis does.
[18:47:22] <Paul Kyzivat> mic: if were to reference 4566bis, must syntax of unsupported attributes be checked?
[18:47:25] <Lorenzo Miniero> but with trickle in place we might not have any candidate at all when we generate the sdp
[18:47:39] <Lorenzo Miniero> what goes in c- and m- lines then?
[18:48:17] <Paul Kyzivat> mic: I think must enumerate a set of attributes for which syntax must be checked.
[18:49:13] <Stephane Ross> If no candidate is specified in initial trickle ICE offer, then I think you should use equivalent of host candidate for m= and c= lines
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[18:50:20] <Jonathan Lennox> Stephane: sometimes you don't want to send the host candidate, for privacy.
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[18:50:54] <Stephane Ross> then in theese cases it makes no sense to send an offer with no candidate at all
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[18:51:11] <Lorenzo Miniero> candidates would be trickled after the SDP is sent, I meant
[18:51:29] <Stephane Ross> so either you use the host candidate or you have at least one candidate
[18:52:15] <Stephane Ross> I mean use the host candidate equivalent in m= and c= lines, or at least use one candidate in the initial offer
[18:52:55] <Jonathan Lennox> Stephane: I think those are equivalent, unless you think there's a use case where you're willing to expose the host IP address but don't want to use it as a candidate.
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[18:53:27] <Jonathan Lennox> Lorenzo: I think Stephane's suggestion is delay the offer until you have at least one candidate.
[18:53:37] <Paul Kyzivat> some of this belongs in 4566bis
[18:54:04] <Jonathan Lennox> True, but JSEP wants to go to PubReq before 4566 will be done.
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[18:54:19] <Lorenzo Miniero> ok, thta's probably required if that becomes a requirement
[18:54:28] <Lorenzo Miniero> not what's happening now, that's why I asked
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[18:58:09] <Randell Jesup> mic: AS is a maximum, not the amount used at any point.  CT is the limit for all (at a given point).  I agree with Lennox/MT/Roni.  mt++
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[18:59:01] <Randell Jesup> mic: some streams are very bursty (screenshare, datachannels)
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[19:23:05] <Randell Jesup> mic: I support this, with Martin's comment about payload/codec specifiers.  This will work and many other bits can be handled by applications (and maybe use of RTPSenders/etc)
[19:23:27] <Ted> Will reflect, Randell
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[19:26:57] <Randell Jesup> is the slide correct?
[19:27:09] <Randell Jesup> says a=imageatter still
[19:27:10] <Magnus Westerlund> Issue 72:
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[19:29:37] <Lorenzo Miniero> Randell you should see the new slide (issue 72)
[19:29:45] <Lorenzo Miniero> I'm in Meetecho monitoring and it did indeed change
[19:30:20] <Paul Kyzivat> mic: if a new DTLS session results (e.g. new fingerprint) then the roles ought to be able to change.
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[19:31:35] <Paul Kyzivat> mic: could be 3pp, with a different party at the other end.
[19:32:26] <Magnus Westerlund> Sorry Paul, should I interrupt?
[19:32:37] <Paul Kyzivat> no. I think it was covered
[19:33:01] <Randell Jesup> reloading meetecho fixed it.
[19:33:14] <Randell Jesup> video of presenter was fine
[19:33:49] <Randell Jesup> lorenzo: FYI, you know that MeetEcho doesn't work with FF Nightly, right?
[19:34:11] <Lorenzo Miniero> that's weird, I'll look into it right after the session ends
[19:34:26] <Lorenzo Miniero> we're using Janus to handle audio and video and I usually check all browsers
[19:34:35] <Lorenzo Miniero> thanks for the heads up
[19:34:36] <Paul Kyzivat> Lorenzo: I saw a similar issue yesterday
[19:34:41] <Randell Jesup> Haven't dug into why.
[19:35:12] <Randell Jesup> Most likely due to multistream/MSID/etc changes recently
[19:35:44] <Randell Jesup> We've been implemting Unified Plan ;-)
[19:36:11] <Lorenzo Miniero> we're not using Unified yet though... I'll try and replicate
[19:36:21] <Lorenzo Miniero> feel free to contact me offline if you want to debug this together
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[19:41:05] <Paul Kyzivat> mic: if you end up with two bundle groups, then jsep must decide which one to use for subsequently added tracks.
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