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

Roman Shpount <roman@telurix.com> Thu, 14 April 2016 20:10 UTC

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Date: Thu, 14 Apr 2016 16:09:59 -0400
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From: Roman Shpount <roman@telurix.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>
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Subject: Re: [MMUSIC] The way forward wih mux-exclusive
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On Thu, Apr 14, 2016 at 4:00 PM, Paul Kyzivat <pkyzivat@alum.mit.edu> wrote:

> On 4/14/16 3:49 PM, Roman Shpount wrote:
>
>> This can currently produce interop problems. With current usage, if
>> rtcp-mux is supported by the remote end point, it will correctly
>> negotiate with rtcp-mux-exclusive. If you remove rtcp-mux attribute from
>> the offer, connection will not be established. This will be especially
>> important during the migration from rtcp-mux to rtcp-mux-exclusive for
>> current implementations. Only inserting rtcp-mux-exclusive, of cause, is
>> better long term, since it is removing redundant information from SDP.
>>
>
> So, why not remove use of rtcp-mux as a *requirement* and leave it as an
> implementation tactic for migration?


I would be happy to remove this as a "requirement". Specify that it can be
optionally used during the migration. But if we do this we will need to
update RFC5761, since rtcp-mux will be used without RTCP fallback address
being provided (which is required by RFC5761).
_____________
Roman Shpount

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