Understood, however at this point major reworking of the token endpoint is 
going to have to wait on the next release of OAuth.

I suspect that there will eventually be a 2.1.

For now this should let us close the book on this 3 year odyssey and address 
some of the other issues like JWT etc.

John B.


On 2012-07-26, at 6:29 PM, Manger, James H wrote:

>>> The changes introduced in Draft 29 had unintended consequences on
>>> parts of the spec caused by Sec 4.3,  4.4 and 6 referencing Sec 3.2.1
>>> as part of client authentication.
> 
>> this change breaks 
>> https://datatracker.ietf.org/doc/draft-ietf-oauth-saml2-bearer/
> and https://datatracker.ietf.org/doc/draft-ietf-oauth-jwt-bearer/
> 
> 
> An underlying cause of this issue is that a single URI (the token endpoint) 
> is overloaded for a dozen different tasks by a bunch of specs — and the list 
> of tasks is still growing.
> 
> OAuth2 has built a RPC-style API, but almost pretends not to have done so by 
> using grant_type names/URIs and a parameter registry instead of a more formal 
> SOAP-style structure.
> 
> John’s proposed note to the RFC editor should address the immediate issue. 
> Perhaps future enhancements, though, could consider a more RESTful approach. 
> I think that would significantly clarify some of the complexities OAuth2 
> grapples with and minimise clashes between the various flows.
> 
> --
> James Manger

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