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[AVT] Contrans I-D -- Summary for San Diego

Hi everyone,

        This is the pre-San-Diego summary posting
for the "Framing RTP and RTCP Packets over
Connection-Oriented Transport" I-D:

draft-ietf-avt-rtp-framing-contrans-03.txt

available for download here:

http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-framing- contrans-03.txt

        Since Seoul, there has been three
revisions of this draft.  These revisions
have tracked changes in the comedia and
related drafts in MMUSIC.

        As written, -03.txt defines the proto
token "TCP/RTP/AVP", so that session descriptions
can specify RTP/AVP streams over TCP.

        However, -03.txt does not define a proto
token to support RTP/AVP over TLS ("TCP/TLS/RTP/AVP")
nor does it define a proto token to support SRTP
over TCP ("TCP/RTP/SAVP").

        I think there are a few options:

[1]  No IETF standards-track protocol defines either
"TCP/TLS/RTP/AVP" or "TCP/RTP/SAVP".

[2] A new MMUSIC I-D defines "TCP/TLS/RTP/AVP" or
"TCP/RTP/SAVP".  This is preferable to reintroducing
it into contrans, because it may take many iterations
to get the security details right, whereas contrans is
ready to go whenever comedia is.

[3] "TCP/TLS/RTP/AVP"  becomes part
of an existing security-oriented MMUSIC I-D.

        I feel uneasy about [1], because it encourages
implementors to not add security to apps that should
use it, or to invent their own proto token out of thin air.
Both seem bad.

        But, I don't presently have the skill set to do
a credible job on a security-oriented I-D, and there's
probably other things I should be doing this year other
than learning security lore (like, finishing RTP MIDI,
and helping teach Cal undergrads computer architecture :-).
So, I won't be able to jump in and do [2] myself in the
next year or so.

	Hopefully, there's someone else here who wants
[2] or [3]  to happen who can help.  Thanks in advance.

---
John Lazzaro
http://www.cs.berkeley.edu/~lazzaro
lazzaro [at] cs [dot] berkeley [dot] edu
---


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