logging into sourceforge with openid breaks

The XRDS served by c-i-p is wrong for delegated identities, yet it is linked from https://launchpad.net/~USER. It has no openid:Delegate elements, so XRDS-capable consumers attempt to authenticate to https://login.launchpad.net/+openid with the original URL, not https://login.launchpad.net/+id/SOMETHING.

Adding <openid:Delegate>https://login.launchpad.net/+id/SOMETHING</openid:Delegate> to the produced XRDS makes everybody happy again.

Looks like this is a bug introduced in a recent update (possibly rev no. 8896 [1]?). Assigning back to flacoste to investigate and decide whether launchpad want to dedicate the resources to fix for their users.

[1] https://bazaar.launchpad.net/~launchpad-pqm/canonical-identity-provider/trunk/revision/8896

My thanks to wgrant, phuff, and sosborn for discussing this issue on
#launchpad. My examination of the code and tests in the code bases were
not making progress; their timely conversation helped be understand what
what was wrong with the openid transaction.

    sinzui: wgrant: c-i-p does not use ~user. that is a launchpad social
        feature
    wgrant: sinzui: But the XRDS is served by the SSO server.
    phuff: wgrant: It's actually a bug on our side
    phuff: wgrant: I can fix it.
    phuff: :)
    phuff: We're not respecting xrds delegation correctly
    phuff: And you guys are doing <LocalId> in your xrds file
    phuff: See https://launchpad.net/~<hidden>/+xrds
    phuff: The error message is a bit confusing
    phuff: But other than that, you're probably doing things right.
    wgrant: phuff: The XRDS I see has no openid:Delegate or LocalId.
    sosborn: it's linked to in the headers
    sosborn: X-Xrds-Location: https://launchpad.net/~<hidden>/+xrds
    phuff: Well, it looks like your header one is valid, we're just not
        parsing it correctly...

I have a fix for this in our repo, should get QAd and hopefully go out tomorrow.

It's working now!

I'm having a similar issue at the moment with en.oreilly.com/oscon2010 which answers "unable to find OpenID Server for https://launchpad.net/~nijaba" while the same url seems to work on other sites.

Unsure if this bug should be reoppened, a new one created, or if this is just a temporary glitch on the other side...