def _canceller(self, deferred):
        deferred.errback(
            error.ConnectingCancelledError(
                self._connector.getDestination()))
        self._connector.stopConnecting()
If :py:obj:`Connection.set_tlsext_host_name` is called with a non-byte string
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/endpoints.py/_WrappingFactory._canceller--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/pyopenssl/OpenSSL/test/test_ssl.py/ConnectionTests.test_set_tlsext_host_name_wrong_args