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Re: [MMUSIC] ice-options attribute: session- and media-level?

Roman Shpount <roman@telurix.com> Fri, 20 April 2018 18:37 UTC

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From: Roman Shpount <roman@telurix.com>
Date: Fri, 20 Apr 2018 14:37:20 -0400
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To: Christer Holmberg <christer.holmberg@ericsson.com>
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Subject: Re: [MMUSIC] ice-options attribute: session- and media-level?
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Hi All,

I do not think ice-options was ever used as a media level attribute. Only
two ice-options defined in IANA registry (
https://www.iana.org/assignments/ice/ice.xhtml) are ice2 and  rtp+ecn,
which are both session level.

Furthermore, RFC 5245 section 15.5 (
https://tools.ietf.org/html/rfc5245#section-15.5,) defined that ice-options
attribute is session level only. Thus, ice-options should be kept session
level for backwards compatibility.

If something more granular then session is needed, I think it should go
into candidate extension attribute, not into media level ice-options.

Bottom line, I think ice-options should be a a session level only attribute.

Regards,

_____________
Roman Shpount

On Fri, Apr 20, 2018 at 3:21 AM, Christer Holmberg <
christer.holmberg@ericsson.com> wrote:

> Anyone???
>
> I need this clarification to be able to address IESG comments given on
> BUNDLE.
>
> Regards,
>
> Christer
>
> From: mmusic <mmusic-bounces@ietf.org> on behalf of Christer Holmberg <
> christer..holmberg@ericsson.com <christer.holmberg@ericsson.com>>
> Date: Tuesday 17 April 2018 at 12:42
> To: "mmusic@ietf.org" <mmusic@ietf.org>
> Subject: [MMUSIC] ice-options attribute: session- and media-level?
>
> Hi,
>
> Section 4.6 of draft-ietf-mmusic-ice-sip-sdp-20 defines the ‘ice-options’
> attribute as both session- and media-level.
>
> However, there is no description of what it means to use the attribute on
> media-level. Does it mean that the indicated ICE extension is only used for
> that particular media stream?
>
> Also, section 5.12 of draft-ietf-mmusic-sdp-mux-attributes-16 indicates
> the attribute as session only (“S”).
>
> Is there a need to define it as media-level attribute?
>
> Regards,
>
> Christer
>
>
> _______________________________________________
> mmusic mailing list
> mmusic@ietf.org
> https://www.ietf.org/mailman/listinfo/mmusic
>
>

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