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Re: [bfcpbis] Updates to draft-ietf-bfcpbis-rfc4583bis required to enable ICE

Tom Kristensen <2mkristensen@gmail.com> Thu, 06 April 2017 14:58 UTC

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From: Tom Kristensen <2mkristensen@gmail.com>
Date: Thu, 06 Apr 2017 16:58:42 +0200
Message-ID: <CAFHv=r82b6s8A5=Z33OGcnZN5My0ArpFwzJPxpbs+wwiu7wgBA@mail.gmail.com>
To: Roman Shpount <rshpount@turbobridge.com>
Cc: "Charles Eckel (eckelcu)" <eckelcu@cisco.com>, "Tom Kristensen (tomkrist)" <tomkrist@cisco.com>, Tom Kristensen <tomkri@ifi.uio.no>, "bfcpbis@ietf.org" <bfcpbis@ietf.org>, Gonzalo Camarillo <Gonzalo.Camarillo@ericsson.com>, "Paul E. Jones" <paulej@packetizer.com>, Christer Holmberg <christer.holmberg@ericsson.com>, Mary Barnes <mary.ietf.barnes@gmail.com>
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Subject: Re: [bfcpbis] Updates to draft-ietf-bfcpbis-rfc4583bis required to enable ICE
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A couple of questions before digging and digesting this into a proper text
proposal. Inline below, of course.


On 2 March 2017 at 23:14, Roman Shpount <rshpount@turbobridge.com> wrote:

> HI All,
>
> Here is the first draft of changes proposed for this document:
>
> 1. In Section 3, we need to define an additional proto field value:
> TCP/DTLS/BFCP, which is realized by running BFCP on top of DTLS as descibed
> in this specification and running DTLS on top of TCP is realized using the
> framing method defined in RFC4571, with DTLS packets being sent and
> received instead of RTP/RTCP packets using the shim defined in RFC4571 so
> that length field defined in RFC4571 precedes each DTLS message. All
> sections of the document should be updated to include the TCP/DTLS/BFCP
> transport.
>

This was questioned by Charles and I agree with the conclusion, backwards
and forward compliancy is good although confusing/differing "syntax".


> 2. References to RFC 5763 should be replaced with references to
> draft-ietf-mmusic-dtls-sdp. Document should be updated to use procedures
> from draft-ietf-mmusic-dtls-sdp including dtls-id.
>

Will include what is needed to use the draft procedures and dtls-id in text
and examples.


> 3. References to RFC 4572 should be replaced with references to
> draft-ietf-mmusic-4572-update. Document should be checked for compliance
> with 4572 update.
>

The id-nits checker made me aware of RFC 8122 obsoleting RFC 4572, I reckon
the additions necessary from the draft-ietf-mmusic-4572-update is covered
in the new RFC 8122 or not?

4. Section 10.5.is redundant with draft-ietf-mmusic-dtls-sdp.
>

OK. Will chop.


> 5. We should not be using SHA-1 fingerprints in examples, since they are
> deprecated
>

Will polish examples.

6. The following section should be added which describes ICE support:
>

Text will be copied verbatim!


>
> ICE Considerations
>
> <...>

-- Tom

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