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Re: [rtcweb] Call for adoption of QoS draft

James Polk <jmpolk@cisco.com> Mon, 10 September 2012 21:13 UTC

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Date: Mon, 10 Sep 2012 16:12:58 -0500
To: Eric Rescorla <ekr@rtfm.com>, Martin Thomson <martin.thomson@gmail.com>
From: James Polk <jmpolk@cisco.com>
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Cc: rtcweb@ietf.org
Subject: Re: [rtcweb] Call for adoption of QoS draft
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At 12:51 PM 9/10/2012, Eric Rescorla wrote:
>On Mon, Sep 10, 2012 at 10:43 AM, Martin Thomson
><martin.thomson@gmail.com> wrote:
> > On 10 September 2012 09:54, Eric Rescorla <ekr@rtfm.com> wrote:
> >> Why would this require SDP work?
> >>
> >> I would assume that this would be a setting on the media stream/track.
> >> or alternately, a hint.
> >
> > You could, but that means that you have a more complicated API to use.
> >  You have to set priority locally, signal the chosen priority, set the
> > signalled priority, etc...
>
>It's not clear to me that these values need to be the same on both
>sides.
>
>But if it *is* true that we want that, then of course it should be in SDP so
>that the functionality is available to endpoints that don't have anything
>to do with WebRTC.'

MMUSIC has a WG item that should provide this indication/hint, in a 
trafficclass label attribute. Browsers identifying a small set of 
labels from that effort should do the trick. See

http://www.ietf.org/internet-drafts/draft-ietf-mmusic-traffic-class-for-sdp-02.txt

James


>-Ekr
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