[in] An opaque value which you can use to differentiate between
authentication operations. This value will be passed in the
UserData parameter of the CompleteAsyncAuthentication
method on the IFWXAuthenticationCompletion interface
specified in the pIFWXAuthenticationCompletion parameter
when this authentication operation completes.
Return Values
This method returns S_OK or ERROR_IO_PENDING if the call is
successful; otherwise, it returns a Windows error code, in which
case the authentication operation is not initiated and the
completion function will not be called.
Remarks
An application filter can use IFWXFirewall2::CreateRadiusAuthenticator
to get the IFWXRadiusAuthenticator
interface. When a request is received on a listener that has RADIUS
authentication enabled, and the application filter needs to perform
RADIUS authentication, it calls
IFWXRadiusAuthenticator::AuthenticateRadiusUser and gives it
the pointer to its IFWXAuthenticationCompletion
interface.
Requirements
Server: Requires Windows Server 2003 or
Windows 2000. Version: Requires Internet Security and Acceleration
Server 2004. Header: Declared in Wspfwext.idl.