Creates the redirect URL for the OpenID authentication request.
The redirect URL string that should be launched by the user's web browser.
Use Immediate mode to get an immediate response back from the OpenID Provider. This means the OpenID Provider will not prompt the user in any way, but will redirect the user's browser back with an authentication response. If the user is not currently logged in to the Provider, a "SetupNeeded" response will be received here at the client.
Set autoRedirect to true to automatically perform an HTTP redirect on the user's browser. This option is only valid in an ASP.NET environment. For all other environments, setting this value will have no effect.