Re: [MMUSIC] comments on draft-ietf-mmusic-sdp-bundle-negotiation-05 - Paul's comments 20131027 - Section 6.4.3

Paul Kyzivat <pkyzivat@alum.mit.edu> Tue, 17 December 2013 23:17 UTC

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Date: Tue, 17 Dec 2013 18:17:48 -0500
From: Paul Kyzivat <pkyzivat@alum.mit.edu>
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To: Christer Holmberg <christer.holmberg@ericsson.com>
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Subject: Re: [MMUSIC] comments on draft-ietf-mmusic-sdp-bundle-negotiation-05 - Paul's comments 20131027 - Section 6.4.3
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I guess this will work.

	Thanks,
	Paul

On 12/8/13 1:04 PM, Christer Holmberg wrote:
> Hi Paul,
>
> …
> …
> …
>
>  > The first mid in the bundle group in the answer determines which address
>  > in the offer will be the bundle address. This restates what you have in
>  > 6.4.2.
>
> Correct.
>
>  >> The only thing which matters is whether the Offer contained
> addresses that are different
>  >> from the determined BUNDLE address (in the initial Offer that will
> always be the case, as
>  >> each address with a non-zero port value must be unique).
>  >
>  > That isn't always true. When making this determination, the offerer
>  > should only consider m-lines that were accepted in the answer.
>
> Ok, I hear you. That is correct, and must be clear in the text.
>
>  > It might have to send a BAS if all the m-lines were accepted, but not
>  > need to do so if some were rejected and all the ones that were accepted
>  > matched the bundle address.
>
> Yes.
>
>  >The trick is figuring out how to state that.
>
> Perhaps something like:
>
> /“When an Offerer receives an Answer, in which an offered BUNDLE group has /
> /been accepted by the Answerer, the Offer checks each “m=” line within the /
> /accepted BUNDLE group against the following criteria:/
> //
> /o  In the Offer the Offerer assigned an address (unique or shared) to
>      the "m=" line, that is different than the BUNDLE address determined /
> /    by the Answerer Section 6.4.2.”
> /
>
> Regards,
>
> Christer (from LH404, somewhere over the English channel)
>