Re: [MMUSIC] Eric Rescorla's No Objection on draft-ietf-mmusic-sdp-bundle-negotiation-51: (with COMMENT)

[Eric Rescorla <[e-mail]>]

On Mon, May 21, 2018 at 6:22 AM, Christer Holmberg <
[e-mail]> wrote:

> Hi,
>
> ...
>
> >>>   [Section 7.3.1] as the answerer tagged "m=" section.  In the answer
> >>>   the answerer BUNDLE-tag indicates the answerer tagged "m=" section.
> >>>
> >>> I'm having trouble reading this paragraph. How do you select an m=
> section that correspond to the selected m= section.
> >>
> >> The n:th m- line in an answer corresponds to the n:th m- line in the
> offer.
> >>
> >> There was some discussion about the terminology, and “corresponds” was
> the outcome.
> >>
> >> I did find a small nit in the text, though:
> >>
> >> s/”section in that”/”section that”
> >
> > My point is that this paragraph just is too hard to read. My problem
> isn't corresponds, it's
> > "select" and "selected" together. Can you rewrite it so that it's
> clearer. Maybe just indicating
> > that one is is the offer and one is in the answer?
>
> What about:
>
>    The answerer MUST select the "m=" section *in the answer* that
> corresponds to the
>    selected offerer tagged "m=" section in the corresponding offer
>    [Section 7.3.1] as the answerer tagged "m=" section.  In the answer
>    the answerer BUNDLE-tag indicates the answerer tagged "m=" section.


This seems clearer, but I'm not sure what "selected" is doing in "selected
offerer tagged". Can you explain?

-Ekr


> ...
>
> >>>   add a bundled "m=" section to a previously negotiated BUNDLE group,
> >>>   the offerer follows the procedures in [Section 7.5].  The offerer
> >>>   either picks the added "m=" section, or an "m=" section previously
> >>>
> >>> You should make clear that it's not possible to have an added m=
> section that the peer can take as bundled or not.
> >>
> >> What about adding the following note:
> >>
> >> “NOTE: As described in [Section 7.3.3], the answerer can not move the
> added “m=” section out of the BUNDLE group in the associated answer.
> >> If the answer wants to move the “m=” section out of the BUNDLE group,
> it will have to first accept it into the BUNDLE group in the answer, and
> >> then send a subsequent offer where the “m=” section is moved out of the
> BUNDLE group [Section 7.5.2].”
> >
> > Yes, that's good, but perhaps "in its  answer"
>
> I can do that.
>
> Regards,
>
> Christer
>
>
>