Re: [rtcweb] Éric Vyncke's No Objection on draft-uberti-rtcweb-rfc8829bis-03: (with COMMENT)

Cullen Jennings <fluffy@iii.ca> Sat, 22 October 2022 16:06 UTC

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From: Cullen Jennings <fluffy@iii.ca>
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Date: Sat, 22 Oct 2022 09:05:43 -0700
Cc: The IESG <iesg@ietf.org>, draft-uberti-rtcweb-rfc8829bis@ietf.org, rtcweb-chairs@ietf.org, RTCWeb IETF <rtcweb@ietf.org>, Sean Turner <sean@sn3rd.com>
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To: Eric Vyncke <evyncke@cisco.com>
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Subject: Re: [rtcweb] Éric Vyncke's No Objection on draft-uberti-rtcweb-rfc8829bis-03: (with COMMENT)
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> On Oct 3, 2022, at 11:18 PM, Éric Vyncke via Datatracker <noreply@ietf.org> wrote:
> 
> ### Section 4.1.1
> 
> The change from "max-bundle" to "must-bundle" is unclear to me (but I am not an
> expert in this protocol) and, with an apparently significant change, should
> there be normative language to ensure transition from 8829 to the -bis ?

SDP is not very well designed from forward / backwards compatibility point of view. This is very deliberate to allow clients that implement the new stuff to understand if the client sending to them only implements the old stuff. It’s weird to need to do it this way, but it’d the best way given the limitation of SDP.