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Re: [rtcweb] FW: New Version Notification for draft-isomaki-rtcweb-mobile-00.txt

"Dan Wing" <dwing@cisco.com> Mon, 09 July 2012 21:17 UTC

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From: Dan Wing <dwing@cisco.com>
To: 'Martin Thomson' <martin.thomson@gmail.com>
References: <20120709144813.22696.79942.idtracker@ietfa.amsl.com> <E44893DD4E290745BB608EB23FDDB76226376D@008-AM1MPN1-043.mgdnok.nokia.com> <03e201cd5e17$33428a70$99c79f50$@com> <CABkgnnWgdsbGaidv1+QK1rhaj9myA6e0mGbVcWXYLTq-utZVqA@mail.gmail.com>
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Date: Mon, 09 Jul 2012 14:18:10 -0700
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Cc: rtcweb@ietf.org
Subject: Re: [rtcweb] FW: New Version Notification for draft-isomaki-rtcweb-mobile-00.txt
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> -----Original Message-----
> From: Martin Thomson [mailto:martin.thomson@gmail.com]
> Sent: Monday, July 09, 2012 2:13 PM
> To: Dan Wing
> Cc: Markus.Isomaki@nokia.com; rtcweb@ietf.org
> Subject: Re: [rtcweb] FW: New Version Notification for draft-isomaki-
> rtcweb-mobile-00.txt
> 
> On 9 July 2012 14:09, Dan Wing <dwing@cisco.com> wrote:
> > [...]  RTP and SCTP-over-UDP flows can benefit from
> > MICE, http://tools.ietf.org/html/draft-wing-mmusic-ice-mobility
> 
> That draft is light on detail in the critical section. 

Yes, we wrote the TURN section first and it has the most detail.
We will add detail for ICE in -01.  Our apologies.

> I assume that
> the conclusion is that there is no need to do anything special, just
> to do something right (i.e., ICE).

Correct.

ICE already allows the endpoints to have SDP m=/c=/a=candidate lines
that disagree regarding their IP addresses and ports.  ICE allows that
because some network topologies cause the endpoint to be unaware of 
how packets are forwarded and the location of NATs corresponding to
location of STUN servers (or however else the endpoint learns public
mappings, e.g., UPnP IGD, PCP, or proprietary mechanisms).  

So, "just do that" is what the ICE section of 
draft-wing-mmusic-ice-mobility will say.

-d

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