Re: [Dart] draft-dart-dscp-rtp - way forward

"Black, David" <david.black@emc.com> Thu, 28 August 2014 20:13 UTC

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From: "Black, David" <david.black@emc.com>
To: Ben Campbell <ben@nostrum.com>
Date: Thu, 28 Aug 2014 16:12:51 -0400
Thread-Topic: [Dart] draft-dart-dscp-rtp - way forward
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Cc: "dart@ietf.org" <dart@ietf.org>, Colin Perkins <csp@csperkins.org>
Subject: Re: [Dart] draft-dart-dscp-rtp - way forward
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> Maybe I'm not connecting the dots correctly, but what kind of media is it
> going to not send? Are we assuming the same as what it receives?

Seems reasonable to me.

Thanks,
--David

> -----Original Message-----
> From: Ben Campbell [mailto:ben@nostrum.com]
> Sent: Thursday, August 28, 2014 3:48 PM
> To: Black, David
> Cc: Colin Perkins; dart@ietf.org
> Subject: Re: [Dart] draft-dart-dscp-rtp - way forward
> 
> 
> On Aug 28, 2014, at 2:41 PM, Black, David <david.black@emc.com>; wrote:
> 
> >>> The distinction between RTCP SR and RR isn't useful here. What you want to
> >> say is that an SSRC needs to use the same marking for the RTCP packets it
> >> sends as it uses for the RTP packets it sends. If it doesn't send any RTP
> >> packets, it marks its RTCP packets with the marking it would use if it did
> >> send RTP.
> >>
> >> That last bit concerns me a bit. Are we really asking an implementation to
> >> figure out how it would have done something it isn't going to do?
> >
> > Yes, --David
> 
> Maybe I'm not connecting the dots correctly, but what kind of media is it
> going to not send? Are we assuming the same as what it receives?
> 
> (Right now I am not sending audio, video, or interactive-holodeck-with-smell-
> o-vision).