def test_gaierror(self):
# Test that IOStream sets its exc_info on getaddrinfo error
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
stream = IOStream(s, io_loop=self.io_loop)
stream.set_close_callback(self.stop)
# To reliably generate a gaierror we use a malformed domain name
# instead of a name that's simply unlikely to exist (since
# opendns and some ISPs return bogus addresses for nonexistent
# domains instead of the proper error codes).
with ExpectLog(gen_log, "Connect error"):
stream.connect(('an invalid domain', 54321))
self.assertTrue(isinstance(stream.error, socket.gaierror), stream.error)
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)
