Should OpenID clients accept adding WWW to the domain?

Posted by Steve Clay on Pro Webmasters See other posts from Pro Webmasters or by Steve Clay
Published on 2011-03-08T13:53:05Z Indexed on 2011/03/08 16:19 UTC
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domain

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authentication

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openid

For a long time I've used OpenID delegation on my site:

http://example.org/ delegated to: http://example.openid-provider.com/, so I logged into OpenID-consuming sites using the former as ID.

Recently I added www. to my site's canonical domain so http://example.org/ now redirects to http://www.example.org/.

Should I be able to continue logging into existing OpenID accounts using http://example.org/?

StackExchange sites say "yes". I can use either URL.

At least one other doesn't recognize my existing account.

Who's "right" (per spec) and is there anything I can fix on my end?

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