def auth_timeout(self):
self.lock.acquire()<EOL>try:<EOL><INDENT>self.__logger.debug("<STR_LIT>")<EOL>if self._auth_methods_left:<EOL><INDENT>self._auth_methods_left.pop(<NUM_LIT:0>)<EOL><DEDENT><DEDENT>finally:<EOL><INDENT>self.lock.release()<EOL><DEDENT>
Handle legacy authentication timeout.

        [client only]