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Re: [rtcweb] DTLS, DTLS-SRTP, and 5-tuples

Iñaki Baz Castillo <ibc@aliax.net> Wed, 11 March 2015 14:14 UTC

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From: Iñaki Baz Castillo <ibc@aliax.net>
Date: Wed, 11 Mar 2015 15:14:28 +0100
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To: Roman Shpount <roman@telurix.com>
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Cc: Cullen Jennings <fluffy@cisco.com>, Jonathan Lennox <jonathan@vidyo.com>, "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] DTLS, DTLS-SRTP, and 5-tuples
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2015-03-11 15:10 GMT+01:00 Roman Shpount <roman@telurix.com>:
> I think there is some confusion between the underlying link protocol used by
> candidates and the protocol running on top of ICE. I do not think TCP is
> defined as a protocol that can operate on top of ICE. It is defined in RFC
> 6544 using framing from RFC 4571, as a protocol for underlying links.
> Whatever protocol is defined on top of ICE should support operation on top
> of packetized communication protocol provided by ICE and should define how
> its packets can be demuxed from STUN packets used for ICE connectivity
> checks. So far things like RTP, DTLS, and SCTP fit such requirements. New
> things can be defined in the future. When they do, they should treat ICE a
> virtual communication channel that provides unreliable packet transport with
> no order guarantees which can span multiple 5-tuples.

Exactly. Please Christer, don't go to layer 4 protocols. Neither IPv6
can run over an ICE initiated "virtual transport" ;)


-- 
Iñaki Baz Castillo
<ibc@aliax.net>

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