I'm looking but I don't found a way to get the orginal request parameters (get or post) on the IdP, I need them to perform a custom login handler based on a keycode that comes on the request to the resource.
I inspect the request on my browser and I don't see the parameter when the SP calls the IdP, is there a way to send the parameters as part of the Idp request? (I'm using shibboleth SP)
Are these parameters on the RelayState? I that case, how can get the RelayState value?