Re: [Dart] multiplexing different media types (was: Commentary on draft-york-00)
"Paul E. Jones" <paulej@packetizer.com> Sun, 15 June 2014 04:52 UTC
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From: "Paul E. Jones" <paulej@packetizer.com>
To: Harald Alvestrand <harald@alvestrand.no>, dart@ietf.org
Date: Sun, 15 Jun 2014 04:52:38 +0000
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Archived-At: http://mailarchive.ietf.org/arch/msg/dart/Vx8P0KvAnszf-t-lBENTc4HPPNA
Subject: Re: [Dart] multiplexing different media types (was: Commentary on draft-york-00)
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Harald, >"SCTP ... can be multiplexed with one or more RTP sessions". Actually >we can only multiplex SCTP with a single RTP session. There have been >proposals that would allow multiplexing of multiple RTP sessions (each >containing multiple media flows) over a single 5-tuple, but these were >not accepted. Your draft (draft-ietf-rtcweb-transports) says: RTCWEB implementations MUST support multiplexing of DTLS and RTP over the same port pair, as described in the DTLS_SRTP specification [RFC5764], section 5.1.2. All application layer protocol payloads over this DTLS connection are SCTP packets. I had a question about this as we discussed the DART draft. I assumed the only DTLS connection would be one used for key negotiation for SRTP. Is that not the case? Would there be multiple DTLS connections multiplexed? If so, how would one be differentiated from another? As for RTP Session multiplexing, it's interesting to hear that proposals are dead. Is there a proposal for multiplexing different media types (e.g., audio and video) within the same RTP Session, then? RFC 3550 discourages that, but it was my understanding that browser makers wanted to multiplex the different media types somehow. What's the plan? Paul
- [Dart] Commentary on draft-york-00 Harald Alvestrand
- Re: [Dart] Commentary on draft-york-00 Dan York
- Re: [Dart] Commentary on draft-york-00 Ben Campbell
- Re: [Dart] Commentary on draft-york-00 Harald Alvestrand
- Re: [Dart] Commentary on draft-york-00 Black, David
- Re: [Dart] Commentary on draft-york-00 Harald Alvestrand
- Re: [Dart] Commentary on draft-york-00 Black, David
- Re: [Dart] Commentary on draft-york-00 Ruediger.Geib
- Re: [Dart] Commentary on draft-york-00 Black, David
- Re: [Dart] multiplexing different media types Paul E. Jones
- Re: [Dart] multiplexing different media types (wa… Paul E. Jones
- Re: [Dart] multiplexing different media types Harald Alvestrand
- Re: [Dart] multiplexing different media types Harald Alvestrand
- Re: [Dart] multiplexing different media types Paul E. Jones
- Re: [Dart] multiplexing different media types Paul E. Jones
- Re: [Dart] multiplexing different media types Paul E. Jones
- Re: [Dart] Commentary on draft-york-00 Ruediger.Geib
- Re: [Dart] multiplexing different media types Harald Alvestrand
- Re: [Dart] multiplexing different media types Eric Rescorla
- Re: [Dart] multiplexing different media types Eric Rescorla
- Re: [Dart] multiplexing different media types Eric Rescorla
- Re: [Dart] multiplexing different media types Eric Rescorla