Re: [MMUSIC] Should draft-dtls-sdp-23 be a normative update to RFC4572 - Pull request
Christer Holmberg <christer.holmberg@ericsson.com> Wed, 19 April 2017 08:08 UTC
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>, Martin Thomson <martin.thomson@gmail.com>, Roman Shpount <roman@telurix.com>
CC: Ben Campbell <ben@nostrum.com>, "mmusic@ietf.org" <mmusic@ietf.org>, Paul Kyzivat <pkyzivat@alum.mit.edu>
Thread-Topic: [MMUSIC] Should draft-dtls-sdp-23 be a normative update to RFC4572 - Pull request
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Date: Wed, 19 Apr 2017 08:08:32 +0000
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Subject: Re: [MMUSIC] Should draft-dtls-sdp-23 be a normative update to RFC4572 - Pull request
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Pull request: https://github.com/cdh4u/draft-dtls-sdp/pull/30 Regards, Christer On 19/04/17 10:54, "Christer Holmberg" <christer.holmberg@ericsson.com> wrote: >Text suggested by Roman, that is… I really need a cup of coffee :) > >On 19/04/17 10:51, "Christer Holmberg" <christer.holmberg@ericsson.com> >wrote: > >>Hi, >> >>Sorry, I messed up the RFCs. >> >>I do NOT think we need to update 8122. The text says that the new >>procedures are used ³in conjunction² with the 8122 procedures, and the >>text suggested by Paul fits into that. >> >>Regards, >> >>Christer >> >> >>On 19/04/17 10:45, "mmusic on behalf of Christer Holmberg" >><mmusic-bounces@ietf.org on behalf of christer.holmberg@ericsson.com> >>wrote: >> >>>Hi, >>> >>>I agree that the draft should be an update to 8122 (not 4572). That was >>>actually my intention, but I forgot about it. >>> >>>The changes suggested by Paul look good. >>> >>>Regards, >>> >>>Christer >>> >>> >>> >>>On 19/04/17 02:39, "Martin Thomson" <martin.thomson@gmail.com> wrote: >>> >>>>I agree with Roman, we can and should just ensure that this is a new >>>>feature, not a rewrite. I don't think that we need to invalidate RFC >>>>4572 implementations. This is an enhancement (a very useful one, but >>>>an enhancement only). >>>> >>>>p.s., Any updating should be done to RFC 8122 now, if at all. That >>>>probably removes any heat from the discussion as pertains to updating >>>>of old specs. >>>> >>>>On 19 April 2017 at 05:17, Roman Shpount <roman@telurix.com> wrote: >>>>> Re-sending to mmusic list and changing the title: >>>>> >>>>> On Tue, Apr 18, 2017 at 10:51 AM, Paul Kyzivat >>>>><pkyzivat@alum.mit.edu> >>>>> wrote: >>>>>> >>>>>> Section 8 has a number of normative requirements around the use of >>>>>> 'tls-id'. This seems to break interoperability with existing >>>>>>implementations >>>>>> that follow RFC4572. >>>>>> >>>>>> What is the intent here regarding interoperability with RFC4572? >>>>>> Perhaps this doc should now also be a formal update to that. >>>>> >>>>> >>>>> Should we reword those requirements that they only apply when tls-id >>>>>is >>>>> used? >>>>> >>>>> So instead of >>>>> >>>>> If an offerer or answerer inserts an SDP 'connection' attribute with >>>>>a >>>>>'new' >>>>> value in the offer/answer, the offerer/answerer MUST also insert an >>>>>SDP >>>>> 'tls-id' attribute with a new unique value. >>>>> >>>>> We would say: >>>>> >>>>> If an offerer or answerer inserts an SDP 'connection' attribute with >>>>>a >>>>>'new' >>>>> value in the offer/answer and also provides SDP 'tls-id' attribute, >>>>>the >>>>> value of tls-id' attribute MUST be new and unique. >>>>> >>>>> And instead of >>>>> >>>>> If an offerer or answerer inserts an SDP 'connection' attribute with >>>>>a >>>>> 'existing' value in the offer/answer, and if a previously established >>>>>TLS >>>>> connection exists, the offerer/answerer MUST also insert an SDP >>>>>'tls-id' >>>>> attribute with the previously assigned value in the offer/answer. >>>>> >>>>> We would say >>>>> >>>>> If an offerer or answerer inserts an SDP 'connection' attribute with >>>>>a >>>>> 'existing' value in the offer/answer, if a previously established TLS >>>>> connection exists, and if the offerer/answerer provided 'tls-id' >>>>>value >>>>>in >>>>> the previous offer/answer which established this TLS connection, the >>>>> offerer/answerer MUST also insert an SDP 'tls-id' attribute with the >>>>> previously assigned value in the offer/answer. >>>>> >>>>> If we reword these statements like this, do we still need to specify >>>>>that >>>>> this document updates RFC4572? >>>>> >>>>> Regards, >>>>> _____________ >>>>> Roman Shpount >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> mmusic mailing list >>>>> mmusic@ietf.org >>>>> https://www.ietf.org/mailman/listinfo/mmusic >>>>> >>> >>>_______________________________________________ >>>mmusic mailing list >>>mmusic@ietf.org >>>https://www.ietf.org/mailman/listinfo/mmusic >> >
- Re: [MMUSIC] Should draft-dtls-sdp-23 be a normat… Christer Holmberg