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Shepherd writeup

As required by RFC 4858, this is the current template for the Document
Shepherd Write-Up.

Changes are expected over time. This version is dated 24 February 2012.

(1) What type of RFC is being requested (BCP, Proposed Standard, Internet
Standard, Informational, Experimental, or Historic)? Why is this the proper
type of RFC? Is this type of RFC indicated in the title page header?

Proposed Standard. The title page has an intended status of "Standards Track".

(2) The IESG approval announcement includes a Document Announcement Write-Up.
Please provide such a Document Announcement Write-Up. Recent examples can be
found in the "Action" announcements for approved documents. The approval
announcement contains the following sections:

Technical Summary:
The WebSocket [RFC6455] protocol enables two-way message exchange between
clients and servers on top of a persistent TCP connection, optionally secured
with Transport Layer Security (TLS) [RFC5246].  This document specifies a new
WebSocket sub-protocol as a reliable transport mechanism between Binary Floor
Control Protocol (BFCP) entities to enable usage of BFCP in new scenarios. The
initial protocol handshake makes use of Hypertext Transfer Protocol (HTTP)
[RFC7230] semantics, allowing the WebSocket protocol to reuse existing HTTP

Working Group Summary:
The document was initially presented in DISPATCH where it was decided there was
sufficient interest in the problem to extend the BFCPBIS charter and milestones
to include it. There were no competing documents and the draft was quickly
adopted as a working group document. Within the working group the scope was
clarified to include BFCP over TCP only. It was challenging at times to find
reviewers for the draft, so it progressed slowly despite there being few
technical issues. The most significant discussions were around SDP procedures,
including the decision to create another draft [draft-ietf-bfcpbis-sdp-ws-uri]
covering the specification of the SDP ws-uri since this URI is not specific to

Document Quality:

Are there existing implementations of the protocol? Have a significant number
of vendors indicated their plan to implement the specification? Are there any
reviewers that merit special mention as having done a thorough review, e.g.,
one that resulted in important changes or a conclusion that the document had no
substantive issues? If there was a MIB Doctor, Media Type or other expert
review, what was its course (briefly)? In the case of a Media Type review, on
what date was the request posted?

The authors are aware of two server-side implementations and one client-side —
none of them is open source. There are also partial client and server
implementations that exercise what is covered in this draft. Other companies
indicated plans to implement this in their WebRTC gateway.


Who is the Document Shepherd? Who is the Responsible Area Director?
Charles Eckel <> is the document shepherd.
Alissa Cooper <> is the responsible Area Director.

(3) Briefly describe the review of this document that was performed by the
Document Shepherd. If this version of the document is not ready for
publication, please explain why the document is being forwarded to the IESG.

This document has been reviewed several times both in its entirety as well as
diffs for specific changes. I believe this version of the document is ready for

(4) Does the document Shepherd have any concerns about the depth or breadth of
the reviews that have been performed?


(5) Do portions of the document need review from a particular or from broader
perspective, e.g., security, operational complexity, AAA, DNS, DHCP, XML, or
internationalization? If so, describe the review that took place.

This document required expert review from the SDP Directorate. The review as
performed by Dan Wing based on draft-ietf-bfcpbis-bfcp-websocket-10 (see for
complete review). The review called attention to some inconsistencies between
this draft and draft-ietf-bfcpbis-sdp-ws-uri-05, and also some descriptions
that were too vague and requirements that were too weak. These were addressed
by draft-ietf-bfcpbis-bfcp-websocket-11 and draft-ietf-bfcpbis-sdp-ws-uri-06.
No other expert reviews were deemed necessary.

(6) Describe any specific concerns or issues that the Document Shepherd has
with this document that the Responsible Area Director and/or the IESG should be
aware of? For example, perhaps he or she is uncomfortable with certain parts of
the document, or has concerns whether there really is a need for it. In any
event, if the WG has discussed those issues and has indicated that it still
wishes to advance the document, detail those concerns here.

No concerns.

(7) Has each author confirmed that any and all appropriate IPR disclosures
required for full conformance with the provisions of BCP 78 and BCP 79 have
already been filed. If not, explain why?


(8) Has an IPR disclosure been filed that references this document? If so,
summarize any WG discussion and conclusion regarding the IPR disclosures.

No IPR disclosure has been filed.

(9) How solid is the WG consensus behind this document? Does it represent the
strong concurrence of a few individuals, with others being silent, or does the
WG as a whole understand and agree with it?

The working group does not have many active participants, but the consensus
represents that of the significant portion of those that are active. There are
no objections to the current version of the draft.

10) Has anyone threatened an appeal or otherwise indicated extreme discontent?
If so, please summarise the areas of conflict in separate email messages to the
Responsible Area Director. (It should be in a separate email because this
questionnaire is publicly available.)


(11) Identify any ID nits the Document Shepherd has found in this document.
(See and the Internet-Drafts Checklist).
Boilerplate checks are not enough; this check needs to be thorough.

Outdated reference: A later version (-06) exists of
draft-ietf-bfcpbis-sdp-ws-uri-05 This is deemed acceptable and unavoidable due
to there being several work in progress drafts that reference each other. It
will need to be resolved at the time of publication.

(12) Describe how the document meets any required formal review criteria, such
as the MIB Doctor, media type, and URI type reviews.

This document required expert review from the SDP Directorate. The results of
those reviews are listed in (5).

(13) Have all references within this document been identified as either
normative or informative?


(14) Are there normative references to documents that are not ready for
advancement or are otherwise in an unclear state? If such normative references
exist, what is the plan for their completion?


(15) Are there downward normative references (see RFC 3967)? If so, list these
downward references to support the Area Director in the Last Call procedure.


(16) Will publication of this document change the status of any existing RFCs?
Are those RFCs listed on the title page header, listed in the abstract, and
discussed in the introduction? If the RFCs are not listed in the Abstract and
Introduction, explain why, and point to the part of the document where the
relationship of this document to the other RFCs is discussed. If this
information is not in the document, explain why the WG considers it unnecessary.


(17) Describe the Document Shepherd's review of the IANA considerations
section, especially with regard to its consistency with the body of the
document. Confirm that all protocol extensions that the document makes are
associated with the appropriate reservations in IANA registries. Confirm that
any referenced IANA registries have been clearly identified. Confirm that newly
created IANA registries include a detailed specification of the initial
contents for the registry, that allocations procedures for future registrations
are defined, and a reasonable name for the new registry has been suggested (see
RFC 5226).

The IANA considerations were thoroughly reviewed and all issues have been

(18) List any new IANA registries that require Expert Review for future
allocations. Provide any public guidance that the IESG would find useful in
selecting the IANA Experts for these new registries.

Normal IANA review procedures are sufficient.

(19) Describe reviews and automated checks performed by the Document Shepherd
to validate sections of the document written in a formal language, such as XML
code, BNF rules, MIB definitions, etc.

None beyond that listed previously.