[OpenID] Why use SREG instead of AX?

[Andrew Arnott]

Thanks, Breno.  What can we, the civilians of OpenID, do to embrace that
working group proposal?
--
Andrew Arnott
"I [may] not agree with what you have to say, but I'll defend to the death
your right to say it." - S. G. Tallentyre


On Fri, Jul 10, 2009 at 9:39 AM, Breno de Medeiros <breno at google.com> wrote:

> Agree with everything that Andrew said
>
> On Fri, Jul 10, 2009 at 9:34 AM, Andrew Arnott <andrewarnott at gmail.com>wrote:
>
>> Presumably the RP has downloaded the OP's entire XRDS document.  In that
>> case, the RP just looks through the type URIs advertised until it finds a
>> single AX attribute Type URI that matches any of the known three patterns,
>> then it chooses that pattern to use.  I don't think that's ugly, personally,
>> even if there were 100 type URIs to sift through.  But I've never seen an OP
>> advertise that many type URIs, so it doesn't seem to be too much of a
>> problem.
>
>
> I did not know that some libraries were doing this matching automatically,
> otherwise we would have added the individual type URIs to Google's XRDS
> document (I guess there is still time). The spec doesn't call for that
> explicitly.
>
>
>>
>> Rather than standardizing on a new type URI to indicate which pattern to
>> use, which would require some work and agreement, we could expend that same
>> effort just standardizing on a single pattern that everyone should use.
>>
>
>  Please embrace http://wiki.openid.net/ProposalForAURLSchemaRegistry and
> let's get AX interoperability going.
>
>
>
>> --
>> Andrew Arnott
>> "I [may] not agree with what you have to say, but I'll defend to the death
>> your right to say it." - S. G. Tallentyre
>>
>>
>> On Fri, Jul 10, 2009 at 9:29 AM, George Fletcher <gffletch at aol.com>wrote:
>>
>>> That will work (though I don't remember seeing any at the time we were
>>> implementing OpenID 2.0 RP support). If I understand correctly, you are
>>> doing some pattern matching against the Type URIs to determine which schema
>>> is being used. Also, if the OP supports 10s or 100s of attributes then this
>>> gets pretty ugly. I'd prefer a single URI the represents the schema being
>>> used. The rest is pretty simple from there.
>>>
>>> Of course it's possible I misunderstood.
>>>
>>> Thanks,
>>> George
>>>
>>> Andrew Arnott wrote:
>>>
>>>> George,
>>>>
>>>> Are you sure they're not defined?  AX has attribute Type URIs.  I've
>>>> been an advocate that OPs publish all their supported AX attribute Type URIs
>>>> in their XRDS document so that RPs know what they might expect from the OP,
>>>> as well as discern which format of type URI that OP supports.  Some OPs do
>>>> just this, and DotNetOpenAuth (the RP part) automatically detects this from
>>>> the OP's XRDS and sends either sreg or one of the three known AX type URI
>>>> formats out there based on what it sees in the XRDS.
>>>>
>>>> --
>>>> Andrew Arnott
>>>> "I [may] not agree with what you have to say, but I'll defend to the
>>>> death your right to say it." - S. G. Tallentyre
>>>>
>>>>
>>>> On Fri, Jul 10, 2009 at 8:48 AM, George Fletcher <gffletch at aol.com<mailto:
>>>> gffletch at aol.com>> wrote:
>>>>
>>>>    Sure, or just define it in the XRDS for the OP. But those aren't
>>>>    currently defined.
>>>>
>>>>    Thanks,
>>>>    George
>>>>
>>>>
>>>>    SitG Admin wrote:
>>>>
>>>>            One other issue is that AX supports multiple schema and
>>>>            there is currently no way for the OP to advertise which
>>>>            schema it's using. So an RP has to build it's own mapping
>>>>            table to know what to send to the OP when using AX.
>>>>
>>>>
>>>>        Common key/API with "schema translation table" AX link?
>>>>
>>>>        -Shade
>>>>
>>>>    _______________________________________________
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>>>>    general at openid.net <mailto:general at openid.net>
>>>>    http://openid.net/mailman/listinfo/general
>>>>
>>>>
>>>>
>>>
>>
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>
>
> --
> --Breno
>
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