Nice to see this draft!
I've just read it and would like to provide some feedback:

1) redirect_url vs. redirect_uri: In different flows, different terms have
been used. I think that should be consistent and it should be uri.

2) Data formats for requests: This spec uses JSON for everything. The core
OAuth (draft 10) uses encoded forms for the request and JSON for the
response. Why not make it consistent with that? I don't see any requirement
to actually POST in JSON as well.

3) The OpenID Connect proposal* includes something similar. For the
response, they have added a few more parameters along with client_id and
client_secret. To quote it:
- expires_in - The number of seconds that this id and secret are good for or
"0" if it does not expire.
- flows_supported - A comma separated list of the OAuth 2.0 flows which this
server supports. The server MUST support the Web server (web_server) and
User-Agent (user_agent) flows.
Don't you think those would be useful?! Also, so far there's no information
(or I didn't see it ...) on whether dynamic registration should be
considered temporary or permanent.

Thanks and regards,
 Lukas Rosenstock

[*] http://openidconnect.com/


2010/8/10 Eve Maler <e...@xmlgrrl.com>

> Folks-- The UMA group has produced the following I-D as input to the OAuth
> discovery/registration/binding discussion.  We wanted to set forth our
> requirements (knowing that there may be other requirements from the wider
> community) and propose some solutions that meet them.  If further discussion
> seems to warrant an updating of this draft, we're happy to do that.  (If you
> have interest in getting involved in UMA-specific work, feel free to drop me
> a note.)
>
>        Eve
>
> http://www.ietf.org/id/draft-oauth-dyn-reg-v1-00.txt
>
>
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