iostream_test.py 文件源码

def test_connection_refused(self):
        # When a connection is refused, the connect callback should not
        # be run.  (The kqueue IOLoop used to behave differently from the
        # epoll IOLoop in this respect)
        server_socket, port = bind_unused_port()
        server_socket.close()
        stream = IOStream(socket.socket(), self.io_loop)
        self.connect_called = False

        def connect_callback():
            self.connect_called = True
        stream.set_close_callback(self.stop)
        # log messages vary by platform and ioloop implementation
        with ExpectLog(gen_log, ".*", required=False):
            stream.connect(("localhost", port), connect_callback)
            self.wait()
        self.assertFalse(self.connect_called)
        self.assertTrue(isinstance(stream.error, socket.error), stream.error)
        if sys.platform != 'cygwin':
            # cygwin's errnos don't match those used on native windows python
            self.assertEqual(stream.error.args[0], errno.ECONNREFUSED)