test_tcp.py 文件源码

def testFailing(self):
        clientF = MyClientFactory()
        # XXX we assume no one is listening on TCP port 69
        reactor.connectTCP("127.0.0.1", 69, clientF, timeout=5)
        def check(ignored):
            clientF.reason.trap(error.ConnectionRefusedError)
        return clientF.failDeferred.addCallback(check)