Re: [MMUSIC] BUNDLE ALMOST DECISSION: BUNDLE PORT

["Cullen Jennings (fluffy)" <[e-mail]>]

sounds good to me along with the port zero fix 

On May 27, 2013, at 3:27 AM, Christer Holmberg <[e-mail]> 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.
>> 
>> This could be interpreted to mean the first a=mid value in the SDP.
>> I'm sure you mean "the first mid value in the a=group:bundle" line.
> 
> Yes.
> 
>> Or perhaps "the first mid value in the bundle group" - assuming there is a definition that "bundle group" means an a=group:bundle line.
> 
> In the draft "bundle group" means (or, at least is supposed to mean :) the bundle grouped m- lines, and in general I think it is better to explicitly mention the line/attribute.
> 
>> This can be "future proofed" by saying that the first mid value in the bundle group in the answer that references an m-line with non-zero 
>> port value. I realize this adds nothing unless 5888 is revised to permit m-lines with zero port in a bundle group. But at least it will be ready for that, and harms nothing.
> 
> I agree, but suggest a little different wording: by saying the first mid value in the group attribute MUST NOT represent a port zero m- line.
> 
> Regards,
> 
> Christer
> 
> 
> 
> 
>> 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
>> 
>> 
>> 
>> _______________________________________________
>> mmusic mailing list
>> [e-mail]
>> https://www.ietf.org/mailman/listinfo/mmusic
>> 
> 
> _______________________________________________
> mmusic mailing list
> [e-mail]
> https://www.ietf.org/mailman/listinfo/mmusic
> _______________________________________________
> mmusic mailing list
> [e-mail]
> https://www.ietf.org/mailman/listinfo/mmusic