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Re: [MMUSIC] Trickle ICE for SIP Questions

Paul Kyzivat <pkyzivat@alum.mit.edu> Thu, 25 July 2013 23:33 UTC

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Date: Thu, 25 Jul 2013 19:32:55 -0400
From: Paul Kyzivat <pkyzivat@alum.mit.edu>
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To: Emil Ivov <emcho@jitsi.org>
References: <51D43186.2010907@jitsi.org> <F81CEE99482EFE438DAE2A652361EE12114A0200@MCHP04MSX.global-ad.net> <51D6D456.7090900@jitsi.org> <F81CEE99482EFE438DAE2A652361EE12114A1127@MCHP04MSX.global-ad.net> <51DAE06C.1030203@alum.mit.edu> <F81CEE99482EFE438DAE2A652361EE12114A31B0@MCHP04MSX.global-ad.net> <51DC9180.5070407@jitsi.org> <7594FB04B1934943A5C02806D1A2204B1C3F2106@ESESSMB209.ericsson.se> <51EC2EF7.1090000@jitsi.org> <51EC5569.60106@alum.mit.edu> <51EC5B75.1020306@jitsi.org> <7594FB04B1934943A5C02806D1A2204B1C3F366B@ESESSMB209.ericsson.se> <51ED0C24.30206@jitsi.org> <7594FB04B1934943A5C02806D1A2204B1C3F685F@ESESSMB209.ericsson.se> <51EEB807.6010704@jitsi.org>
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Cc: "mmusic@ietf.org" <mmusic@ietf.org>, Christer Holmberg <christer.holmberg@ericsson.com>
Subject: Re: [MMUSIC] Trickle ICE for SIP Questions
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On 7/23/13 1:06 PM, Emil Ivov wrote:

> I actually think we could pull this off with simple PRACKs. Only, rather
> than using the "100rel" tag we go for something like "100rel-lite" which
> could be defined to indicate that a UA supports PRACK but only for
> reliability (and PRACK bodies are not allowed).

This is crazy!

Every new option presents backward compatibility issues, implementation 
issues, ...

It doesn't make sense to define a new option that is a subset of a long 
time existing option. This is *not* rocket science. Just tell people 
they need to support 100rel as a precondition for trickle ICE. If they 
find trickle ice worthwhile they can implement it.

I'd be amazed if there are any SBCs that don't support PRACK. (But 
Hadriel will fill us in about that.)

	Thanks,
	Paul

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