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Re: [MMUSIC] BUNDLE goes UP: Do we need port zero for bundle-only m- lines?

Christer Holmberg <christer.holmberg@ericsson.com> Thu, 08 August 2013 18:24 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Adam Roach <adam@nostrum.com>, Hadriel Kaplan <hadriel.kaplan@oracle.com>
Thread-Topic: [MMUSIC] BUNDLE goes UP: Do we need port zero for bundle-only m- lines?
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Date: Thu, 08 Aug 2013 18:24:02 +0000
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Cc: mmusic <mmusic@ietf.org>
Subject: Re: [MMUSIC] BUNDLE goes UP: Do we need port zero for bundle-only m- lines?
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Hi,

I agree with Adam on this one. Port zero is used in answers to reject a stream, and I don't think we should change that.

Regards,

Christer



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-----Original Message-----
From: Adam Roach [adam@nostrum.com]
To: Hadriel Kaplan [hadriel.kaplan@oracle.com]
CC: Christer Holmberg [christer.holmberg@ericsson.com]; mmusic [mmusic@ietf.org]
Subject: Re: [MMUSIC] BUNDLE goes UP: Do we need port zero for bundle-only m- lines?
On 8/8/13 07:21, Hadriel Kaplan wrote:
> What I think should happen is the UAS should send an SDP answer using port=0 for those same m-lines

Why? You're proposing that we remove the mechanism for rejecting media
streams. Consider the example I put up during the meeting: you have a
regular audio m-line and a bundle-only video m-line. The other end wants
to decline the video. You've just taken away the tool for doing so.

There'd better be a heck of an upside to removing this critical protocol
mechanism. So far, the upside you've described is "Hadriel thinks it's
not aesthetically pleasing," which doesn't seem to be a very practical
consideration. Is there a technically compelling argument for your position?

/a

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