Re: [MMUSIC] Trickle ICE for SIP Questions
"Parthasarathi R" <partha@parthasarathi.co.in> Fri, 26 July 2013 18:03 UTC
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From: Parthasarathi R <partha@parthasarathi.co.in>
To: 'Emil Ivov' <emcho@jitsi.org>, 'MMUSIC IETF WG' <mmusic@ietf.org>
References: <1CDFD781608D924094E43F573C351961BDE2DC@xmb-rcd-x13.cisco.com> <C5E08FE080ACFD4DAE31E4BDBF944EB11360D0D2@xmb-aln-x02.cisco.com> <51F03DC8.70908@jitsi.org> <00d401ce894e$70aa81c0$51ff8540$@co.in> <51F15478.3060104@jitsi.org>
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Date: Fri, 26 Jul 2013 23:32:40 +0530
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Subject: Re: [MMUSIC] Trickle ICE for SIP Questions
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Hi Emil, Please read inline. Thanks Partha > -----Original Message----- > From: mmusic-bounces@ietf.org [mailto:mmusic-bounces@ietf.org] On > Behalf Of Emil Ivov > Sent: Thursday, July 25, 2013 10:08 PM > To: 'MMUSIC IETF WG' > Subject: Re: [MMUSIC] Trickle ICE for SIP Questions > > Hey Partha, > > On 25.07.13, 17:48, Parthasarathi R wrote: > > Hi Emil, > > > > In the mentioned situation, different To-tag with same contact header > for > > trickled SDP, So there will be no "N" locations. > > Having the same contact header does not automatically suggest that this > is somehow a fake fork (unless I am missing the text that says this in > 3261). You could potentially have this if the fork is done by a B2BUA > or > a PSTN gateway for example. > <Partha>The discussion is not about fake fork. The contact indicates location of the UAS. In case of PSTN & B2BUA as UAS, PSTN & B2BUA contact SIP URI is the location for UAC. From the UAC perspective, there is no "N" location in UAS due to fake forking as you expect.</Partha> > > My reading of the draft is that this draft is not required in case > UPDATE > > (RFC 3311) method is supported. UPDATE with SDP will update trickle > > candidate within 18x. > > Use of UPDATE has already been discussed and we pretty much agreed not > to go that way. > > A mail from Alan and the preceding discussion: > http://www.ietf.org/mail-archive/web/mmusic/current/msg10660.html > > A follow up with a nice summary from Dale: > http://www.ietf.org/mail-archive/web/mmusic/current/msg10678.html <Partha> Sorry for the delay discussion. I'm still seeing few aspects Missing from the discussion. I'll write the separate mail thread for this </Partha> > > > The aim of the draft is to support Trickle ICE for SIP user agent > which does > > not support RFC 3311 for last 11 years. AFAIK, different "to tag" is > the > > simpler way to solve the problem in UAS side. I have concern w.r.t > INFO > > mechanism as it adds one method for handling SDP and complicates the > > existing SDP O/A handling (RFC 6337). > > That's the thing, trickle ICE is not part of Offer/Answer. It's a > separate channel for agent-to-agent communication. Use of SDP is just a > convenient coincidence. > > > Including Christer in this mail thread as he replied in the parallel > mail > > thread. > > I believe he is on the list I don't think that's an issue :) > > Cheers, > Emil > > > > Thanks > > Partha > > > >> -----Original Message----- > >> From: Emil Ivov [mailto:emcho@jitsi.org] > >> Sent: Thursday, July 25, 2013 2:19 AM > >> To: Cullen Jennings (fluffy) > >> Cc: Vijaya Mandava (vimandav); Parthasarathi R; Alan Johnston; > MMUSIC > >> IETF WG > >> Subject: Re: [MMUSIC] Trickle ICE for SIP Questions > >> > >> > >> > >> On 24.07.13, 21:56, Cullen Jennings (fluffy) wrote: > >>> > >>> On Jul 24, 2013, at 12:22 PM, Vijaya Mandava (vimandav) > >> <vimandav@cisco.com> wrote: > >>> > >>>> 180 with different to-tag would mean call is forked. > >>>> If uac side do not support call forking, then we cannot use this > 180 > >>>> response to collect trickled candidates. > >>> > >>> If it is a UAC, it supports this so I don't see the problem. > >> > >> One problem is that the UAC could support it to the extent of making > it > >> visible to the user: > >> > >> "Your contact is being alerted on these N locations" > >> > >> And of course there's also the fact that we would be creating > several > >> dialogs per call, that we'd then need to clean and garbage collect. > >> > >> Why would we want to go there? > >> > >> Emil > >> > >> -- > >> https://jitsi.org > > > > > > -- > https://jitsi.org > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www.ietf.org/mailman/listinfo/mmusic
- Re: [MMUSIC] Trickle ICE for SIP Questions Stach, Thomas
- [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Dan Wing
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Stach, Thomas
- Re: [MMUSIC] Trickle ICE for SIP Questions Stach, Thomas
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Paul Kyzivat
- Re: [MMUSIC] Trickle ICE for SIP Questions Marc Petit-Huguenin
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Marc Petit-Huguenin
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Marc Petit-Huguenin
- Re: [MMUSIC] Trickle ICE for SIP Questions Paul Kyzivat
- Re: [MMUSIC] Trickle ICE for SIP Questions Paul Kyzivat
- Re: [MMUSIC] Trickle ICE for SIP Questions Stach, Thomas
- Re: [MMUSIC] Trickle ICE for SIP Questions Stach, Thomas
- Re: [MMUSIC] Trickle ICE for SIP Questions Paul Kyzivat
- Re: [MMUSIC] Trickle ICE for SIP Questions Paul Kyzivat
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Cullen Jennings (fluffy)
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Paul Kyzivat
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Alan Johnston
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Parthasarathi R
- Re: [MMUSIC] Trickle ICE for SIP Questions Vijaya Mandava (vimandav)
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Cullen Jennings (fluffy)
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Parthasarathi R
- Re: [MMUSIC] Trickle ICE for SIP Questions Parthasarathi R
- Re: [MMUSIC] Trickle ICE for SIP Questions Emil Ivov
- Re: [MMUSIC] Trickle ICE for SIP Questions Paul Kyzivat
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Vijaya Mandava (vimandav)
- Re: [MMUSIC] Trickle ICE for SIP Questions Parthasarathi R
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Christer Holmberg
- Re: [MMUSIC] Trickle ICE for SIP Questions Stach, Thomas
- [MMUSIC] UPDATE vs INFO for SIP Trickle ICE [was … Parthasarathi R