Re: [Sip] [sipcore] [Technical Errata Reported] RFC3261 (2910)
Robert Sparks <rjsparks@nostrum.com> Wed, 03 August 2011 15:46 UTC
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From: Robert Sparks <rjsparks@nostrum.com>
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Date: Wed, 03 Aug 2011 10:46:10 -0500
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To: Iñaki Baz Castillo <ibc@aliax.net>
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Cc: "sip@ietf.org List" <sip@ietf.org>, "SIPCORE (Session Initiation Protocol Core) WG" <sipcore@ietf.org>
Subject: Re: [Sip] [sipcore] [Technical Errata Reported] RFC3261 (2910)
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(removing the rfc-editor and trimming the distribution to the lists) On Aug 2, 2011, at 5:24 PM, Iñaki Baz Castillo wrote: > 2011/8/2 Robert Sparks <rjsparks@nostrum.com>: >> Further, they're only going to make sense for 1xx that is sent using 100rel. > > This has been discussed in sip-implementors, and that assertion seems > incorrect. As I've reported in the errata: > > > Section 12.1: "Dialogs are created through the generation of > non-failure responses to requests with specific methods. Within this > specification, only 2xx and 101-199 responses with a To tag, where the > request was INVITE, will establish a dialog." > > Section 12.1.1: "When a UAS responds to a request with a response that > establishes a dialog (such as a 2xx to INVITE), the UAS MUST copy all > Record-Route header field values from the request into the response > [...]. The UAS MUST add a Contact header field to the response." > > So it's clear that a 1xx response to an INVITE creates a dialog and > then it MUST contain a Contact header and mirrored Record-Route > headers, *regardless* the usage of 100rel. > > Am I wrong? if so, why? Not wrong, just incomplete. This will create an (early) dialog at the UAS. It may or may not create a dialog at the UAC without 100rel since the message may never get to the UAC. Where I said "make sense" above, it might have been better if I had said "be useful". > > Regards. > > > -- > Iñaki Baz Castillo > <ibc@aliax.net> > _______________________________________________ > sipcore mailing list > sipcore@ietf.org > https://www.ietf.org/mailman/listinfo/sipcore
- [Sip] [Technical Errata Reported] RFC3261 (2910) RFC Errata System
- Re: [Sip] [Technical Errata Reported] RFC3261 (29… Bob Penfield
- Re: [Sip] [Technical Errata Reported] RFC3261 (29… Iñaki Baz Castillo
- [Sip] Table2/3 maintenance (was Re: [Technical Er… Robert Sparks
- Re: [Sip] [Technical Errata Reported] RFC3261 (29… Robert Sparks
- Re: [Sip] [Technical Errata Reported] RFC3261 (29… Iñaki Baz Castillo
- Re: [Sip] Table2/3 maintenance (was Re: [Technica… Iñaki Baz Castillo
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Robert Sparks
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Samir Srivastava
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Paul Kyzivat
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Iñaki Baz Castillo
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Worley, Dale R (Dale)
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Romel Khan
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Samir Srivastava
- Re: [Sip] [sipcore] [Technical Errata Reported] R… Paul Kyzivat