Along those lines, here's an access token (SWT w/o URL encoding) that has some 
role and attribute data. I think it is representative of how customers are 
using the OAuth WRAP implementation in AppFabric.

Role=user,superuser,administrator&Action=create,retrieve,update,delete&CustomerID=123456789&Issuer=https://acsinteropdemo.accesscontrol.windows.net/&Audience=http://acsinteropdemo.appspot.com/orders&ExpiresOn=1268207444&HMACSHA256=0p1PPgCcox7uRw1ETtUTlpwBgfGAF3UhTFaHUPaprik=


--justin

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Brian 
Eaton
Sent: Tuesday, March 09, 2010 11:35 PM
To: Luke Shepard
Cc: OAuth WG
Subject: Re: [OAUTH-WG] Defining a maximum token length?

On Tue, Mar 9, 2010 at 11:02 PM, Luke Shepard <[email protected]> wrote:
> I'd still like to see someone construct an example access token that is
> longer than 255 characters that would be reasonably used. If there
> are real, legitimate use cases that REQUIRE more than that many
> characters, then let's hear them. I don't think that appealing to
> "it might be useful" is a good enough argument.

Cached group memberships and other user attributes are what typically
blow out the cookie size in enterprise environments.

If you browse around the web for a bit you'll see various sites that
set very large cookies after users log in.  They are caching state in
the cookie.  It's all fair game for API tokens as well.

Cheers,
Brian
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