[Gen-art] Gen-ART review of draft-ietf-simple-chat-13

[Christer Holmberg <[e-mail]>]

I am the assigned Gen-ART reviewer for this draft. For background on 
Gen-ART, please see the FAQ at 
<http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>.

Please resolve these comments along with any other Last Call comments 
you may receive.

Document:                  draft-ietf-simple-chat-13
Reviewer:                   Christer Holmberg
Review Date:              12-02.11
IETF LC End Date:     12-02-06
IESG Telechat date: (if known)

Summary:          Ready, but some additional text may be needed based on the minor issues.

Major issues:     None

Minor issues:

- The second paragraph of section 7.1 says that a NICKNAME request MUST contain a Use-Nickname header, but in the sixth paragraph the inclusion is a SHOULD.

- It is not clearly indicated whether the Use-Nickname header is allowed for other methods than NICKNAME.

- Section 8 does not specify whether there are SDP offer/answer considerations/restrictions associated with the new attribute. For example: 
-- Must the attribute tokens in an answer be a subset of the tokens in an offer?
-- Can an SDP answer contain an attribute if the offer didn't?
-- If a user sends a new SDP offer within a session, can the token values be modified? What does it mean if the attribute is not present in a new SDP offer?


Nits/editorial comments:

- Sometimes the document talks about "multi-party chat", "multi-party conference", "conference", and "chat room". Would it be possible to use more consistant terminology?

- Requirements
-- REQ-4: Isn't this requirement already covered by REQ-3?
-- REQ-6: Change "progress" to "duration" or "length".

- There is no definition/reference for "roster".


Regards,

Christer