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Re: [MMUSIC] Trickle ICE for SIP Questions

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 26 July 2013 08:30 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, Emil Ivov <emcho@jitsi.org>
Thread-Topic: [MMUSIC] Trickle ICE for SIP Questions
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Date: Fri, 26 Jul 2013 08:29:58 +0000
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Cc: "mmusic_ietf.org" <mmusic@ietf.org>
Subject: Re: [MMUSIC] Trickle ICE for SIP Questions
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Hi,

I am not sure we would need to define anything new - we could simply say that Trickle ICE UAs don't send Offer/Answers in PRACKSs :)

Regards,

Christer



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-----Original Message-----
From: Paul Kyzivat [pkyzivat@alum.mit.edu]
To: Emil Ivov [emcho@jitsi.org]
CC: Christer Holmberg [christer.holmberg@ericsson.com]; Stach, Thomas [thomas.stach@siemens-enterprise.com]; mmusic@ietf.org [mmusic@ietf.org]
Subject: Re: [MMUSIC] Trickle ICE for SIP Questions
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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