Re: [MMUSIC] New draft version: draft-ietf-mmusic-msrp-usage-data-channel-01
Christian Groves <Christian.Groves@nteczone.com> Tue, 10 March 2015 03:26 UTC
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Date: Tue, 10 Mar 2015 14:25:58 +1100
From: Christian Groves <Christian.Groves@nteczone.com>
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Subject: Re: [MMUSIC] New draft version: draft-ietf-mmusic-msrp-usage-data-channel-01
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Hello Juergen, Thanks for the update. Some comments: 5.1.1.1 - The section indicates that the max-retr, max-time and ordered parameters shall not be used. I take it then that the SCTP Stream used for MSRP must be DATA_CHANNEL_RELIABLE? If so it might be better to say what is used rather than what is not. 5.1.1.1 - The text regarding the SCTP port can be removed because of recent changes to draft-ietf-mmusic-sctp-sdp removing the concept of default port. 5.1.1.2 1st paragraph - I propose to re-order to make it clear there's one dcsa line per MSRP specific attribute: The SDP offer shall also include within the media description for the SCTP association a dcsa attribute line (defined in [I-D.ietf-mmusic-data-channel-sdpneg]) for each MSRP-specific SDP attribute to be negotiated for each MSRP data channel being negotiated. 5.1.1.2: MSRP "max-size" would it be worth to note that this must be less than the SCTP SDP max-message-size value? 5.1.1.2: "Setup" is this relevant for MSRP using data channel? The SCTP-SDP draft etc. give rules as to which endpoint establishes different parts of the transport connection? 5.1.1.3: a=sctp-port 5000 should have a colon e.g. a=sctp-port:5000 5.1.5: This section indicates that closing is done as per I-D.ietf-mmusic-data-channel-sdpneg. However clause 5.2.4/I-D.ietf-mmusic-data-channel-sdpneg indicates that closure is sub-protocol specific. Its not clear to me whether this the sub-protocol should indicate the use of the SCTP reset or the use of SDP O/A? Regards, Christian On 9/03/2015 10:05 PM, Juergen Stoetzer-Bradler wrote: > Hello, > > Have also submitted version -01 of > draft-ietf-mmusic-msrp-usage-data-channel. > The changes as compared to version -00 are listed below and are > related to corresponding recent email list discussions. > This list is also copied to the change log section 10.1. > > Thanks, > Juergen > > > o Additional reference to [I-D.ietf-mmusic-data-channel-sdpneg] in > list of normative references. > > o Replacement of previous document title "MSRP over SCTP/DTLS data > channels" with "MSRP over Data Channels" in order to align with > the terminology used in [I-D.ietf-mmusic-data-channel-sdpneg]. > > o In Section 3 "WebRTC data channel" was defined as "A bidirectional > channel consisting of paired SCTP outbound and inbound streams." > Replacement of this definition with "Data channel: A WebRTC data > channel as specified in [I-D.ietf-rtcweb-data-channel]", and > consistent usage of either "data channel" or "MSRP data channel" > in the remainder of the document." > > o In the introduction replacement of references to > [I-D.ietf-rtcweb-data-protocol] with a reference to > [I-D.ietf-rtcweb-data-channel]. > > o Consistent usage of '"m" line' in whole document as per [RFC4566]. > > o In the gateway configuration section (Section 6) replacement of > the first sentence "This section describes the network > configuration where one endpoint runs MSRP over a WebRTC SCTP/DTLS > connection, the other MSRP endpoint runs MSRP over one or more > TLS/TCP connections, and the two endpoints interwork via an MSRP > gateway" with "This section describes the network configuration > where one MSRP endpoint uses data channels as MSRP transport, the > other MSRP endpoint uses TLS/TCP connections as MSRP transport, > and the two MSRP endpoints interwork via an MSRP gateway". > > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www.ietf.org/mailman/listinfo/mmusic >
- Re: [MMUSIC] New draft version: draft-ietf-mmusic… Juergen Stoetzer-Bradler
- Re: [MMUSIC] New draft version: draft-ietf-mmusic… Christian Groves
- [MMUSIC] New draft version: draft-ietf-mmusic-msr… Juergen Stoetzer-Bradler
- Re: [MMUSIC] New draft version: draft-ietf-mmusic… Christian Groves
- Re: [MMUSIC] New draft version: draft-ietf-mmusic… Juergen Stoetzer-Bradler
- Re: [MMUSIC] New draft version: draft-ietf-mmusic… Christian Groves