def test_getHost(self):
        host, portNumber = findFreePort(type=SOCK_DGRAM)
        reactor = self.buildReactor()
        port = reactor.listenUDP(
            portNumber, DatagramProtocol(), interface=host)
        self.assertEqual(
            port.getHost(), IPv4Address('UDP', host, portNumber))
L{IListeningPort.getHost} returns an L{IPv4Address} giving a
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/test/test_udp.py/UDPServerTestsBuilder.test_getHost