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Re: [MMUSIC] New Draft: SDP Grouping Identifiers

Christer Holmberg <christer.holmberg@ericsson.com> Wed, 04 December 2013 12:11 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Adam Roach <adam@nostrum.com>, Paul Kyzivat <pkyzivat@alum.mit.edu>, "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: [MMUSIC] New Draft: SDP Grouping Identifiers
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Date: Wed, 04 Dec 2013 12:11:41 +0000
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Subject: Re: [MMUSIC] New Draft: SDP Grouping Identifiers
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Hi,

Just because we have done something wrong in the past, we don’t have to do it again :)

Also, I don’t think re-ordering of sdplang attributes would cause a technical error.

Regards,

Christer

From: Adam Roach [mailto:adam@nostrum.com]
Sent: 4. joulukuuta 2013 1:02
To: Christer Holmberg; Paul Kyzivat; mmusic@ietf.org
Subject: Re: [MMUSIC] New Draft: SDP Grouping Identifiers

On 12/3/13 12:47, Christer Holmberg wrote:

There are parsers that do not necessarily keep the order when parsing an SDP body, why e.g. something that "enter" a SIP proxy is not necessarily what "comes out".

That would be folly, as we already (even in the base spec) have the idea of order significance; e.g.:

         Multiple sdplang

         attributes can be provided either at session or media level if

         multiple languages in the session description or media use

         multiple languages, in which case the order of the attributes

         indicates the order of importance of the various languages in

         the session or media from most important to least important.

/a

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