$ua->simple_request( $request )
       $ua->simple_request( $request, $content_file )
       $ua->simple_request( $request, $content_cb )
       $ua->simple_request( $request, $content_cb, $read_size_hint )
           This method dispatches a single request and returns the response
           received.  Arguments are the same as for request() described above.

           The difference from request() is that simple_request() will not try
           to handle redirects or authentication responses.  The request()
           method will in fact invoke this method for each simple request it
           sends.