IdPV3 login page access to AuthnRequest

[Peter Schober]

* Roehrl Patrick <patrick.roehrl at inet-logistics.com> [2015-07-28 09:39]:
> Short fact: we used the assertion consumer url to redirect the user
> to the point where he came from

Why not just use RelayState with the requested URL as value?
That won't be widely interoperable with arbitrary SPs either (as
there's no requirement for RelayState to make sense to the IDP) but at
least you're using a data strcuture that was defined for that very
purpose.
-peter