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Re: [rtcweb] DRAFT Agenda for RTCWEB

Salvatore Loreto <salvatore.loreto@ericsson.com> Sat, 02 March 2013 06:34 UTC

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Date: Sat, 02 Mar 2013 08:34:54 +0200
From: Salvatore Loreto <salvatore.loreto@ericsson.com>
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Subject: Re: [rtcweb] DRAFT Agenda for RTCWEB
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On 3/2/13 1:09 AM, Michael Tuexen wrote:
> On Mar 1, 2013, at 8:57 PM, Dale R. Worley wrote:
>
>>> From: Michael Tuexen <Michael.Tuexen@lurchi.franken.de>
>>> As far as I understand it is easy (based on the first byte) to demux
>>> DTLS from STUN and SRTP. SCTP is the only payload for DTLS, so there
>>> is no need for demuxing. So no need to control SCTP ports. Or am I
>>> missing something?
>> Controlling port numbers is needed if SCTP is *not* encapsulated in
>> DTLS and yet has to be distinguished from RTP et al.  (That would
>> become significant if encryption was applied to the bundle's packet
>> stream as a whole, rather than to the constituent streams
>> individually.)
> Sorry, I don't understand what you are saying. Which document describes
> the stack you are referring to? How would encryption be done for SCTP over UDP
> over IP?

Dale: can you clarify which scenario you have in mind when you say:
"Controlling port numbers is needed if SCTP is *not* encapsulated in 
DTLS and yet has to be distinguished from RTP et al."
is it a WebRTC usage or a usage for a different aim (maybe CLUE?)

/Salvatore

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