Re: [Slim] Multi-lines and offer/answer questions on draft-ietf-slim-negotiating-human-language

Brian Rosen <br@brianrosen.net> Tue, 13 June 2017 13:46 UTC

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From: Brian Rosen <br@brianrosen.net>
In-Reply-To: <1a17f909-8980-0b47-0170-199be1cdc8cc@omnitor.se>
Date: Tue, 13 Jun 2017 09:46:25 -0400
Cc: "slim@ietf.org" <slim@ietf.org>, Randall Gellens <rg+ietf@randy.pensive.org>
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Subject: Re: [Slim] Multi-lines and offer/answer questions on draft-ietf-slim-negotiating-human-language
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This has to have occurred in the SDP parameters.  We should do what is usually done for a similar circumstance.

> On Jun 13, 2017, at 1:51 AM, Gunnar Hellström <gunnar.hellstrom@omnitor.se> wrote:
> 
> A couple of questions on draft-ietf-slim-negotiating-human-language.
> 
> 1. How would inclusion of more than one hlang attribute of the same kind in a media description be handled.
> 
> a) should it be seen as an addition, so the language tags are collected and any asterisk governs.
> 
> b) should it replace earlier attributes of same kind in same media description
> 
> c) should it be "illegal"
> 
> I have a slight preference for a). Some applications might find it easier to insert a number of complete attributes.
> 
> 
> 2. How would inclusion of hlang attributes in an answer be handled if no one was included in the offer.
> 
> This assumes that the offering party supports hlang attributes bu did not bother to add any.
> 
> a) The offering party would act on the attributes in the answer as usual. (A re-Invite would be needed to get full negotiation in place if that was desired.)
> 
> b) The offering party would ignore it.
> 
> c) It would be seen as "illegal"
> 
> I think a) is the natural choice and is also how the current draft can be interpreted. In 5.2, there is a paragraph starting "In an answer..", not exactly requiring that attributes were included in an offer (but anyway talking about what was in the offer)
> 
> 
> I suggest that some wording is included for clarification of these cases.
> 
> 
> /Gunnar
> 
> 
> -- 
> -----------------------------------------
> Gunnar Hellström
> Omnitor
> gunnar.hellstrom@omnitor.se
> +46 708 204 288
> 
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