Errors that have nothing to do with the core spec. There is not overlap in 
functionality between the two documents and their use cases.

EH

> -----Original Message-----
> From: Mike Jones [mailto:michael.jo...@microsoft.com]
> Sent: Monday, May 07, 2012 4:12 PM
> To: Eran Hammer; Hannes Tschofenig; oauth@ietf.org WG
> Subject: RE: [OAUTH-WG] Error Registry Consensus Call
> 
> The bearer spec is not intended as a general purpose HTTP Auth scheme.
> Note that it includes a "scope" response, which firmly anchors it to use with
> OAuth, where it provides flows E-F which follow flows A-D that are specified
> in the framework spec - thus completing the end-to-end OAuth protocol
> usage flows.
> 
> These are OAuth-specific errors.
> 
> -----Original Message-----
> From: oauth-boun...@ietf.org [mailto:oauth-boun...@ietf.org] On Behalf
> Of Eran Hammer
> Sent: Monday, May 07, 2012 4:07 PM
> To: Hannes Tschofenig; oauth@ietf.org WG
> Subject: Re: [OAUTH-WG] Error Registry Consensus Call
> 
> A.
> 
> For the following reasons (all extensively discussed on this list before):
> 
> 1. The OAuth core specification has nothing to do with HTTP authentication
> schemes.
> 2. The bearer specification is a general purpose HTTP Auth scheme and
> defining such a registry needs to be defined within those boundaries - that 
> is,
> either specific to Bearer to generic to all HTTP Auth scheme opting into the
> error parameter.
> 3. There wasn't strong consensus that the error parameter was even
> necessary or useful to begin with. Limiting it to bearer reflects the wider 
> IETF
> consensus on the matter (based on feedback received at the time from the
> HTTPbis WG).
> 4. It would be odd for someone using the bearer scheme outside of OAuth to
> use the OAuth error registry (and take over values that will be helpful for 
> the
> core specification).
> 5. There is no overlap in functionality or values between the protected
> resource endpoint (which is part of the proprietary API namespace) and the
> OAuth endpoint for which the registry was created. To piggyback the OAuth
> registry just because it is slightly easier would be wrong. There is no 
> interop
> value accomplished.
> 
> This is not simply a question of where to stick the registry. Adding this to 
> the
> OAuth registry would be a fundamental change in architecture and
> philosophy and a significant change at this point. Adding it to the bearer
> specification is the only viable option.
> 
> I would request that such a change go through another IETF LC if this was the
> WG consensus but hope we can avoid it.
> 
> EH
> 
> 
> 
> > -----Original Message-----
> > From: oauth-boun...@ietf.org [mailto:oauth-boun...@ietf.org] On Behalf
> > Of Hannes Tschofenig
> > Sent: Monday, May 07, 2012 3:48 PM
> > To: oauth@ietf.org WG
> > Subject: [OAUTH-WG] Error Registry Consensus Call
> >
> > Hi all,
> >
> > there is an open issue concerning draft-ietf-oauth-v2-bearer-19 that
> > may impact draft-ietf-oauth-v2-26 (depending on it's resolution) and
> > we would like to get feedback from the working group about it.
> >
> > Here is the issue: When a client makes an access to a protected
> > resources then things may go wrong and an error may be returned in
> > response. draft- ietf-oauth-v2-bearer talks about this behavior.
> >
> > That's great but these error codes need to be registered somewhere.
> > Note that the registry can be created in one document while the values
> > can be registered by many documents.
> >
> > So, where should the registry be?
> >
> > There are two choices.
> >
> > a) A new OAuth errors registry goes into draft-ietf-oauth-v2-bearer.
> >
> > b) draft-ietf-oauth-v2 expands the scope of the existing OAuth Errors
> > registry to encompass errors returned from resource servers.
> >
> > Currently, draft-ietf-oauth-v2 creates registries for error codes only
> > for the exchanges from A-to-D (symbols used from Figure 1 of
> > draft-ietf-oauth-v2), but excludes registration of errors from flows E-F.
> >
> > We must create a registry for error codes from flows E-F.  In which
> > document do we want to create this registry?
> >
> > So, give us your feedback whether you have a preference by the end of
> > the week.
> >
> > Ciao
> > Hannes & Derek
> >
> > _______________________________________________
> > OAuth mailing list
> > OAuth@ietf.org
> > https://www.ietf.org/mailman/listinfo/oauth
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