Message Session Relay Protocol (MSRP) over Data Channels
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: firstname.lastname@example.org, The IESG <email@example.com>, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org Subject: Protocol Action: 'MSRP over Data Channels' to Proposed Standard (draft-ietf-mmusic-msrp-usage-data-channel-23.txt) The IESG has approved the following document: - 'MSRP over Data Channels' (draft-ietf-mmusic-msrp-usage-data-channel-23.txt) as Proposed Standard This document is the product of the Multiparty Multimedia Session Control Working Group. The IESG contact persons are Murray Kucherawy and Barry Leiba. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-mmusic-msrp-usage-data-channel/
Technical Summary This document specifies how the Message Session Relay Protocol (MSRP) can be transported as a WebRTC data channel sub-protocol, using the SDP offer/answer generic data channel negotiation framework to establish such a channel. Two network configurations are supported: connecting two MSRP over data channel endpoints; and a gateway configuration, connecting an MSRP over data channel endpoint with an MSRP over TCP or TLS endpoint. This document updates RFC4975. Working Group Summary The WG document was expired for almost a year, twice, due to unresponsive authors, despite repeated efforts to encourage authors and trying to find other people willing to take authorship. No technical controversy could be noted. The document was marked as dead WG document in September 2018. 3GPP delegates noticed the change of status and that there are references to this draft from 3GPP specifications, after which a new author was finally stepping up, resulting in MMUSIC re-adoption in April 2019 after affirmation that the new author was willing to drive the document until publication. Since then, progress was fairly good with multiple revisions and receiving decent review in the WG. One of the co-authors is also active in 3GPP standardization, which should help ensure that the document is suitable for the mentioned 3GPP references. Document Quality There are no known implementations of the protocol beyond experimental proof-of-concept. Some vendors have indicated plans to implement. 3GPP TS 24.371 references this draft normatively when MSRP is to be supported in 3GPP WebRTC datachannel context. The general document structure and content follows that of draft-ietf-mmusic-t140-usage-data-channel (in RFC Editor's Queue at the time of writing) which is describing another sub-protocol (t140) to WebRTC data channel and that received significant review with respect to how to best structure such document. Personnel Bo Burman is the Document Shepherd. Murray Kucherawy is the Responsible Area Director.