Question: multiple IdPs?

[Mike Glover]

I think this will fall down when the RP tries to validate the authentication response.  From the 2.0-10 spec, section 8.3.3:

A <LINK> tag MUST be included with attributes "rel" set to "openid.server", and "href" set to an IdP Endpoint URL

which you would have to torture hideously to interpret as permitting more than one openid.server line.  You might get an RP that will look at more than one, but that behavior is certainly not required by the spec (nor should it be, IMO).

-mike

On Tue, 17 Oct 2006 23:25:19 -0700
Dick Hardt <dick at sxip.com> wrote:

> I would like to use different IdPs for my vanity URL, blame.ca. In an  
> OpenID 2.0 world, I can provide either of my IdP URLs to the RP and  
> then select blame.ca and login.
> 
> Does this work? What having two openid.server tags suffice? How would  
> the RP know which delegate tag goes with which IdP? The spec is not  
> silent on this.
> 
> ( and yes, another argument for having one identifier so that the RP  
> does not have to figure out anything about the delegate tag since it  
> does not do anything with it anyway!)
> 
> -- Dick
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