def find_url_file(self):
        """Set the url file.

        Here we don't try to actually see if it exists for is valid as that
        is hadled by the connection logic.
        """
        config = self.config
        # Find the actual controller key file
        if not self.url_file:
            self.url_file = os.path.join(
                self.profile_dir.security_dir,
                self.url_file_name
            )