[OpenID] host-meta and "acct:"

[Manger, James H]

Hi Santosh,



> You are assuming the meta-data "is not a resource".



No I am not.



> I think meta-data is also a "Resource".



I agree, the jim.footy.xrd  file has its own URI so it is a resource — but that is irrelevant to <Subject>.



The XRD <Subject> element “provides the identifier of the resource described by this XRD” [XRD v1.0 WD9, §2.1.1.<http://www.oasis-open.org/committees/download.php/34724/xrd-1.0-wd09.html#element.xrd>].

jim.footy.xrd does not describe itself, it describes hundreds of other *.html pages I wrote about football. It makes no sense for <Subject> to hold the URI of the XRD file itself in this situation.





If you have an OpenID identifier that isn’t used for anything else (eg its not your blog or home page), then (in some potential future OpenID v3) a GET on that OpenID identifier could return a XRD with its own URI in the <Subject>. It would be metadata about itself. It could point to an OP directly, eliminating the extra round-trip of going from a resource to its metadata since they are one and the same in this case. [Mind you, I’m not sure you gain much over serving an HTML page with OpenID v1 or v2 <link>s to the OP.]





James Manger

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