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Re: [MMUSIC] The way forward wih mux-exclusive

Roman Shpount <roman@telurix.com> Fri, 08 April 2016 22:15 UTC

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Date: Fri, 08 Apr 2016 18:15:29 -0400
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From: Roman Shpount <roman@telurix.com>
To: Flemming Andreasen <fandreas@cisco.com>
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Subject: Re: [MMUSIC] The way forward wih mux-exclusive
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On Fri, Apr 8, 2016 at 10:39 AM, Flemming Andreasen <fandreas@cisco.com>
wrote:

> Based on all of this, and since we currently have a WG adopted draft for
> rtcp-mux-exclusive that went through a WGLC already, we want to continue
> with the rtcp-mux-exclusive solution. If anybody objects to this, please
> let us know no later than Friday, April 15.
>

I support this decision. I always had a preference for rtcp-mux-exclusive
over anything a=rtcp: based since it avoids potential interop issues. I am
not sure how existing implementations will react to a=rtcp:0. This is
something that did no exist before and I am not sure if some
implementations will not break in unexpected way because of a=rtcp:0.

P.S. If some one really cares about the attribute size, we can always shave
5 bytes by renaming the attribute to rtcp-mux-only.

P.P.S. Regardless of what we do, we do need the mux exclusive document.
Upon more careful re-reading of RFC5761 it looks like it requires for the
offerer to provide a fall back RTCP destination when rtcp-mux is not
accepted. We need to update the rtcp-mux-exclusive draft to make sure it
updates RFC5761 to allow offers without RTCP fallback destination.

Regards,
_____________
Roman Shpount

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