bogus ACS URL in authnRequest

[Peter Schober]

* Peter Schober <peter.schober at univie.ac.at> [2012-06-03 17:53]:
> Within a Confluence space that's publicly viewable there's a specific
> protected page that can only be accessed successfully if there is a
> pre-existing Confluence (and/or Shib) session, but when accessed
> without a session (i.e., requires generation of an authnRequest and
> roundtrip to the IdP) generates a bogus ACS URL in the AuthnRequest to
> the IdP, which then (correctly) fails with a "No peer endpoint
> available to which to send SAML response" error message.

Of course I found it in the archives after posting,
cf. thread with subject: "transient problem with ACS URL",
-peter