Re: [Last-Call] Opsdir last call review of draft-ietf-mmusic-msrp-usage-data-channel-22

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Hi Al,

Thank You for the review! Please see inline.

>Reviewer: Al Morton
>Review result: Has Nits
>
>OPS-DIR review of MSRP over Data Channels
>draft-ietf-mmusic-msrp-usage-data-channel-21
>
>   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.
>
> Summary: Operational impact of this protocol appears to be minimal, if any.
>
> Gen-ART review has found some Nits that must be resolved.

They were solved and implemented in the -22 version of the draft.

>Key Notes from the Doc Shepherd's write-up [0]:
>   It seems that this document was revived after being abandoned, when 3GPP
>   noticed the change in status and recognized use of the draft as a normative
>   reference in 3GPP Specifications.
>
>   There are no known implementations of the protocol, and thus no operational
>   issues at this time. However, some vendors (of???) have indicated plans to
>   implement.

Based on my knowledge, vendors of both endpoints and network nodes (gateways etc).

>   Further investigation indicates that there are Normative References
>   to drafts that are more than a year old. For example, the 2 refs below:
>   ...the channel is
>   negotiated using the SDP-based external negotiation method defined in
>      [I-D.ietf-mmusic-data-channel-sdpneg].
>
>   The following WebRTC data channel property values
>   [I-D.ietf-rtcweb-data-channel] apply to an MSRP data channel:
>
>Also, from the Normative References section:
>
>   [I-D.ietf-rtcweb-data-protocol]
>              Jesup, R., Loreto, S., and M. Tuexen, "WebRTC Data Channel
>              Establishment Protocol", draft-ietf-rtcweb-data-
>              protocol-09 (work in progress), January *2015*.
>
>   [I-D.ietf-rtcweb-data-channel]
>              Jesup, R., Loreto, S., and M. Tuexen, "WebRTC Data
>              Channels", draft-ietf-rtcweb-data-channel-13 (work in
>              progress), January *2015*.

All drafts mentioned above are part of cluster 238. Many drafts in the cluster are done, but the publications have been on hold for a while, as the idea is to publish them all at once.

---

Nits:

>2.  Conventions
>   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALLNOT", s/"SHALLNOT"/"SHALL NOT"/

This has been fixed in version -22. Maybe you were looking at version -21?

Regards,

Christer



[0]
https://datatracker.ietf.org/doc/draft-ietf-mmusic-msrp-usage-data-channel/shepherdwriteup/



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