Re: Existing missmatch between SDP mux and BUNDLE

Hi Magnus

Can you elaborate on the mismatch ? I understand they do not say the 
same thing, but it's not clear to me they are actually in conflict with 
each other.

How do you interpret the line ("associate" in particular)
<quote>
Otherwise the offerer/answerer MUST NOT associate such SDP attributes 
with the "m=" line.
<quote>

Is the issue that bundle is relaxing the MUST requirement in bundle ?

Thanks

-- Flemming

On 9/20/17 7:20 AM, Magnus Westerlund wrote:
>
> Hi,
>
> We are currently in AUTH48 for draft-ietf-avtcore-rfc5285bis which 
> references Bundle and SDP-Mux as it defines the mux category for its 
> SDP attributes. As we made some last minute changes to MUX catergory 
> for the extmap-allowed-mixed attribute we found some text needing 
> changes. This anyway resulted in us noticing a missmatch between 
> BUNDLE and sdp-mux.
>
> So Bundle (-39) states:
>
> 8.1. Mux Category Considerations
>
>     When an offerer or answerer associates SDP attributes with a bundled
>     "m=" line (including any bundle-only "m=" line) associated with a
>     shared address, IDENTICAL and TRANSPORT mux category SDP attributes
>     [I-D.ietf-mmusic-sdp-mux-attributes] are associated with the "m="
>     line only if the "m=" line is also associated with the offerer/
>     answerer BUNDLE-tag.  Otherwise the offerer/answerer MUST NOT
>     associate such SDP attributes with the "m=" line.  The rule above
>     does not apply to a bundled "m=" line associated with a unique
>     address.
>
>
> However, SDP-mux states:
>
> 4.3. Category: IDENTICAL
>
>     The attributes and their associated values (if any) in the IDENTICAL
>     category MUST be repeated across all the media descriptions under
>     multiplexing.
>
> To my understanding the first is correct, but the change in BUNDLE has not been
> reflected into SDP-mux doc. I assume that is in part due to its approved status.
> Has the authors tracked the set of changes that are needed due to changes in BUNDLE?
>
> Do there exist a text change for this missmatch?
>
>
> Cheers
>
> Magnus Westerlund
>
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