You are a bit behind. -08 added it back as grant_type which works better with 
the current explanation.

EHL

From: Dick Hardt [mailto:dick.ha...@gmail.com]
Sent: Tuesday, June 22, 2010 1:29 PM
To: Brian Eaton
Cc: Eran Hammer-Lahav; OAuth WG (oauth@ietf.org)
Subject: Re: [OAUTH-WG] Draft -07 (major rewrite)

Per an earlier comment, "type" might not be the best name for the parameter. 
Perhaps "method" might work and adds a clear extension point for other types of 
calls?
On Tue, Jun 22, 2010 at 1:22 PM, Dick Hardt 
<dick.ha...@gmail.com<mailto:dick.ha...@gmail.com>> wrote:
One of the modifications I concluded to do to WRAP was to add in the type 
parameter. I was happy to see if in David's draft.

Even though redundant in some ways, it make it very clear to both the client 
and server what is intended.

+1 for putting it back in.

On Mon, Jun 14, 2010 at 11:23 AM, Brian Eaton 
<bea...@google.com<mailto:bea...@google.com>> wrote:
On Mon, Jun 14, 2010 at 9:18 AM, Eran Hammer-Lahav 
<e...@hueniverse.com<mailto:e...@hueniverse.com>> wrote:
> Adding a verification code to the user-agent flow was suggested on this list
> and received nothing but support. It was suggested as a solution to a
> Twitter use case. Once that is added in, the two flows only differ in how
> the response is delivered and the presence of an access token in the
> response (which currently is a MUST NOT for web-server but I don't know if
> this restriction is need).
Yeah, this matters.  If you return an access token on the web-server
flow, several things break:
- you can no longer rely on the client secret to authenticate the callback URL.
- you lose all hope of getting to LOA 2 with this protocol, because
the access token is visible to the client.
- you lose the clarity of how the web server flow is supposed to work.

Bike-shed painting:

The use-cases for web server and user-agent flow are also different.
I'd prefer to have the spec call out different profiles for different
use-cases, because it makes it much easier to figure out what a given
application should be doing.

During the WRAP work I argued that we didn't need a type parameter,
and after looking at WRAP implementations I've changed my mind.
Please leave it in.

Cheers,
Brian
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