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

Suhas Nandakumar <suhasietf@gmail.com> Sat, 21 April 2018 06:09 UTC

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From: Suhas Nandakumar <suhasietf@gmail.com>
Date: Fri, 20 Apr 2018 23:09:16 -0700
Message-ID: <CAMRcRGT=KvEyafM=bNwfmF0B5A70BrHXUBSoFFrEDPKY=fSMmg@mail.gmail.com>
To: Peter Saint-Andre <stpeter@mozilla.com>
Cc: mmusic WG <mmusic@ietf.org>, Marc Petit-Huguenin <marc@petit-huguenin.org>
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Subject: Re: [MMUSIC] ice-options attribute: session- and media-level?
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I am fine with considering ice-options has session level too. I wonder if
Marc can chime in on considering it as  media level in the ice-sip-sdp.

On Fri, Apr 20, 2018 at 12:07 PM, Peter Saint-Andre <stpeter@mozilla.com>
wrote:

> On 4/20/18 12:37 PM, Roman Shpount wrote:
> > 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.
>
> Agreed.
>
> In the Trickle ICE spec, we also limited the `trickle` option to session
> level only.
>
> Peter
>
>
>
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