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Re: [Perc] Drop support for E2E RTP header extensions

Cullen Jennings <fluffy@iii.ca> Sat, 13 May 2017 14:35 UTC

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From: Cullen Jennings <fluffy@iii.ca>
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Date: Sat, 13 May 2017 08:33:35 -0600
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To: Paul Jones <paulej@packetizer.com>
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Subject: Re: [Perc] Drop support for E2E RTP header extensions
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> On May 12, 2017, at 12:10 AM, Paul E. Jones <paulej@packetizer.com> wrote:
> 
> I don't see how we can support any E2E extension given the offerer specifies the ID mapping. Multiple endpoints in a conference might indicate any number of didn't ID values for the same extension.
> 


Just so we are all clear on how this would work ... sorry for the repetition ....


If Alice's UA offers urn:ietf:params:rtp-hdrext:encrypt with and ID of 1 and the conferences wants to use 22 because that is what other endpoints are using, the conference server simply rejects that in the answer then does and reoffers that with an ID of 22. 

This of course does not take care of Sergio request that the conference bridge would like to tell ALice's UA if this should be protected E2E or not. I'll send a separate email on that.

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