test_tcp.py 文件源码

def test_properlyCloseFiles(self):
        """
        Test that lost connections properly have their underlying socket
        resources cleaned up.
        """
        onServerConnectionLost = defer.Deferred()
        serverFactory = protocol.ServerFactory()
        serverFactory.protocol = lambda: ConnectionLostNotifyingProtocol(
            onServerConnectionLost)
        serverPort = self.createServer('127.0.0.1', 0, serverFactory)

        onClientConnectionLost = defer.Deferred()
        serverAddr = serverPort.getHost()
        clientCreator = protocol.ClientCreator(
            reactor, lambda: HandleSavingProtocol(onClientConnectionLost))
        clientDeferred = self.connectClient(
            serverAddr.host, serverAddr.port, clientCreator)

        def clientConnected(client):
            """
            Disconnect the client.  Return a Deferred which fires when both
            the client and the server have received disconnect notification.
            """
            client.transport.loseConnection()
            return defer.gatherResults([
                onClientConnectionLost, onServerConnectionLost])
        clientDeferred.addCallback(clientConnected)

        def clientDisconnected((client, server)):
            """
            Verify that the underlying platform socket handle has been
            cleaned up.
            """
            expectedErrorCode = self.getHandleErrorCode()
            err = self.assertRaises(
                self.getHandleExceptionType(), client.handle.send, 'bytes')
            self.assertEqual(err.args[0], expectedErrorCode)