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[MMUSIC] Do we really need TCP/DTLS/SCTP proto field?

Eric Rescorla <ekr@rtfm.com> Thu, 16 February 2017 15:44 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 16 Feb 2017 07:43:49 -0800
Message-ID: <CABcZeBOK0T5WbMLi=AS3WOAjDt_D8e8JSTp2czSYdhHv8Xcgtw@mail.gmail.com>
To: mmusic WG <mmusic@ietf.org>, Ben Campbell <ben@nostrum.com>
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Subject: [MMUSIC] Do we really need TCP/DTLS/SCTP proto field?
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I raised this with the authors, but maybe it is worth asking the mailing
list.

It seems like we are trending towards a world where we just ignore the
transport
component of the proto field and let ICE work things out. In that vein, I
wonder
do we really need to register/define TCP/DTLS/SCTP. It's only really useful
if
we think people will do SCTP over DTLS with TCP without ICE. Is that
actually
likely. I note that per previous discussions, JSEP already requires that
you use
UDP/DTLS/SCTP all the time:
http://rtcweb-wg.github.io/jsep/#rfc.section.5.1.2

-Ekr

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