Re: [rtcweb] Comments on draft-ietf-rtcweb-data-channel-07
Magnus Westerlund <magnus.westerlund@ericsson.com> Tue, 25 February 2014 10:58 UTC
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Date: Tue, 25 Feb 2014 11:58:43 +0100
From: Magnus Westerlund <magnus.westerlund@ericsson.com>
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To: Barry Dingle <btdingle@gmail.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>, draft-ietf-rtcweb-data-channel@tools.ietf.org
Subject: Re: [rtcweb] Comments on draft-ietf-rtcweb-data-channel-07
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On 2014-02-23 10:54, Barry Dingle wrote: > In reference to your first _Section 1 comments_, I agree that we need to > clearly differentiate the SRTP media and the SCTP media. (Note - SRTP - > not RTP !) So SRTP is an extension of RTP, in fact it is a profile, or rather two (RTP/SAVP or RTP/SAVPF). I wrote RTP because I meant no specific RTP configuration here, it can be any of the profiles and any of the extensions. I know and fully support that RTCWEB uses RTP/SAVPF for RTP transported media, however in the wider context and possible other usage of the defined mechanism this may or may not be true. Therefore I see a need to be generic in that discussion. If one want to emphasize the SRTP part, then use (S)RTP. > > I agree that there could be real-time media that can be sent over SCTP > Channels are still meet the criteria for 'real-time' as being 'received > within a few hundred milliseconds of being generated' - see WebRTC > Overview section 2.4. > > Maybe we need to differentiate the Channel types - and then refer to the > data going over those Channels. For instance,if we define "SRTP > Channels" and "SCTP Channels", we could then refer to 'SRTP Channel > media' which would have a specific meaning. Well, around RTP we aren't discussing "channels" at all. Thus, this becomes very ambiguous to what it means, unless you have a definition to go along with it. In the context of a PeerConnection we can have one or more RTP session. Also, I don't know what an SCTP channel is. There is an SCTP association, which is something between two endpoints. On top of this we have the SCTP Data channels. So what are you missing or want from these definitions? Cheers Magnus Westerlund ---------------------------------------------------------------------- Services, Media and Network features, Ericsson Research EAB/TXM ---------------------------------------------------------------------- Ericsson AB | Phone +46 10 7148287 Färögatan 6 | Mobile +46 73 0949079 SE-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com ----------------------------------------------------------------------
- [rtcweb] Comments on draft-ietf-rtcweb-data-chann… Magnus Westerlund
- [rtcweb] Comments on draft-ietf-rtcweb-data-chann… Paul Kyzivat
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Barry Dingle
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Magnus Westerlund
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Barry Dingle
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Randell Jesup
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Michael Tuexen
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Michael Tuexen
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Michael Tuexen
- Re: [rtcweb] Comments on draft-ietf-rtcweb-data-c… Michael Tuexen