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Re: [MMUSIC] Thoughts on draft-ietf-mmusic-dtls-sdp-10 semantics

Paul Kyzivat <pkyzivat@alum.mit.edu> Mon, 07 March 2016 17:29 UTC

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To: Christer Holmberg <christer.holmberg@ericsson.com>, Roman Shpount <roman@telurix.com>
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From: Paul Kyzivat <pkyzivat@alum.mit.edu>
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Date: Mon, 07 Mar 2016 11:52:34 -0500
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Subject: Re: [MMUSIC] Thoughts on draft-ietf-mmusic-dtls-sdp-10 semantics
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On 3/7/16 11:26 AM, Christer Holmberg wrote:
> I suggest dtls-association-id. In my opinion there is no longer the same
> need to be aligned with the name of the connection attribute.

This seems plausible. But I want to reserve judgement until the detailed 
semantics of the attribute are worked out:

- is it numeric, or a token?
- any rules for how the value chosen?
- is it tied to an actual property of the association,
    or is it just an arbitrary extra piece of state?
- any rules for how the *next* value is chosen when
    a new (replacement) association is being proposed?
- when (if ever) can an id be reused?

It is *possible* (though not likely) that the details may suggest a 
particular name that is more meaningful than "id".

	Thanks,
	Paul

> Regards,
>
> Christer
>
> Sent from my Windows Phone
> ------------------------------------------------------------------------
> From: Roman Shpount <mailto:roman@telurix.com>
> Sent: ‎07/‎03/‎2016 18:24
> To: Paul Kyzivat <mailto:pkyzivat@alum.mit.edu>
> Cc: Christer Holmberg <mailto:christer.holmberg@ericsson.com>; Justin
> Uberti <mailto:juberti@google.com>; mmusic@ietf.org <mailto:mmusic@ietf.org>
> Subject: Re: [MMUSIC] Thoughts on draft-ietf-mmusic-dtls-sdp-10 semantics
>
>
> On Mon, Mar 7, 2016 at 11:05 AM, Paul Kyzivat <pkyzivat@alum.mit.edu
> <mailto:pkyzivat@alum.mit.edu>> wrote:
>
>     On 3/7/16 3:09 AM, Christer Holmberg wrote:
>
>         So, would anyone object to the principle of going forward with
>         an ID approach?
>
>
>     I am ok with this, as long as it is done well.
>
>
> We will try our best. I am trying to model the language on ICE ufrag.
>
> Any preferences on the attribute name? So far I can think of dtls-id,
> dtls-association-id, or dtls-connection-id
>
> Regards,
> _____________
> Roman Shpount

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