Re: [MMUSIC] BUNDLE ALMOST DECISSION: BUNDLE PORT

Suhas Nandakumar <suhasietf@gmail.com> Fri, 24 May 2013 23:00 UTC

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Date: Fri, 24 May 2013 16:00:44 -0700
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From: Suhas Nandakumar <suhasietf@gmail.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>
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Subject: Re: [MMUSIC] BUNDLE ALMOST DECISSION: BUNDLE PORT
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Hey Christer

   This looks good to me. I personally feel this approach is agnostic of
inclusions and exclusions of m=lines in  the subsequent session
modifications "Eventually".
Also this aligns with the current framework for categorizing
SDP attributes with multiplexing.

Cheers
Suhas

On Fri, May 24, 2013 at 5:39 AM, Christer Holmberg <
christer.holmberg@ericsson.com> wrote:

>  Hi,****
>
> ** **
>
> At the interim yesterday, we agreed to use the SDP BUNDLE group attribute
> to indicate on which port bundled media will be sent. In an SDP offer, the
> order of the attribute mid values can be used by the offerer to indicate a
> “wish”, but the first attribute mid value in the answer indicates where the
> answerer will eventually send bundled media.****
>
> ** **
>
> The main usage of this is the “initial offer”, when each m- line within a
> bundle group has a different port value.****
>
> ** **
>
> So far so good.****
>
> ** **
>
> The reason I say “almost decision” is because we have started a new
> discussion regarding updated offers, adding new m- lines etc. We need to
> make sure that the order-to-mid-values semantics also apply to those, and
> what restrictions there are when adding m- lines.****
>
> ** **
>
> But, for now, if you OBJECT to the general principle of using the SDP
> group attribute mid value order for indicating the port where media will be
> sent, please indicate so.****
>
> ** **
>
> Regards,****
>
> ** **
>
> Christer****
>
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