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Re: [MMUSIC] Transport tags

Magnus Westerlund <magnus.westerlund@ericsson.com> Fri, 13 January 2017 08:35 UTC

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To: Roman Shpount <roman@telurix.com>, Christer Holmberg <christer.holmberg@ericsson.com>
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From: Magnus Westerlund <magnus.westerlund@ericsson.com>
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Date: Fri, 13 Jan 2017 09:35:29 +0100
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Cc: Paul Kyzivat <paul.kyzivat@comcast.net>, "mmusic@ietf.org" <mmusic@ietf.org>
Subject: Re: [MMUSIC] Transport tags
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Hi,

A question, is the UDP/DTLS/BFCP only used with ICE, or are they also 
used without ICE support. I wonders how this relates to the discussion 
that the UDP/TCP destinction becomes mote when one actually are doing 
ICE/DTLS/BFCP, i.e. use ICE to agree on a datagram capable transport and 
then puts DTLS/BFCP over it, independent on what transport type the 
arrived candidate pairs are on.

Is there a point to the BFCP usages to actually be explicit that we one 
only want to use ICE negotiated DTLS secured BFCP, and thus should have 
a PROTO value for that, i.e. ICE/DTLS/BFCP?

Note, this is a question, not an actual proposal. Just an exploration so 
that you who use the protocol can consider if it makes sense.

Cheers

Magnus

Den 2017-01-12 kl. 23:15, skrev Roman Shpount:
> On Thu, Jan 12, 2017 at 4:45 PM, Christer Holmberg
> <christer.holmberg@ericsson.com <mailto:christer.holmberg@ericsson.com>>
> wrote:
>
>     >I do not think TCP/DTLS/BFCP is defined anywhere, so it does not
>     have to be backwards compatible. We are not changing the proto
>     value, we should >define a new one and explain how it works. This
>     leaves TCP/BFCP and TLS/BFCP as they were previously defined and
>     simply states that these transports >cannot be used with ICE. Only
>     UDP/DTLS/BFCP and TCP/DTLS/BFCP can be used with ICE, with ICE not
>     supported for all the other BFCP flavors.
>
>     __
>
>     __ __
>
>     Ok, so TCP/BFCP and TLS/BFCP will still be kept in 4583bis, and
>     should be used when ICE is not used?____
>
>
>
> TCP/BFCP, TLS/BFCP and UDP/BFCP will be kept in 4583bis and can only be
> used when ICE is not used. UDP/DTLS/BFCP and TCP/DTLS/BFCP are two
> transport that can be used with or without ICE.
>
> Regards,
> _____________
> Roman Shpount
>


-- 

Magnus Westerlund

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