python - 带有TCPServer的扭曲应用程序(.tac)无法正常工作，而常规Twisted .py可以与listenTCP一起使用

我目前正在尝试将基于扭曲的应用程序转换为扭曲的扭曲应用程序框架（TAC）。

如果启动.py，则该应用程序可以运行，但不能使用“ twistd -noy zmq2tcp.tac”守护程序启动。
ZMQ连接似乎已正确打开，但是如果以tac文件开头，则它不会在端口2323上侦听。

请解释一下为什么在这种情况下listenTCP起作用但不能在Internet上起作用的原因。

zmq2tcp.tac文件：

#!/usr/bin/python
# **- encoding: utf-8 -**
from twisted.application import internet, service
from twisted.application.service import Application

from txzmq import ZmqFactory, ZmqEndpoint, ZmqSubConnection, ZmqPushConnection

from zmq2tcp import *

LISTEN_PORT = 2323

class ListenService(service.Service):
    def __init__(self):
        self.zf = ZmqFactory()
        self.minidoFactory = MinidoServerFactory()

    def startService(self):
        self.sube = ZmqEndpoint('connect', 'tcp://localhost:5557')
        self.push = ZmqEndpoint('connect', 'tcp://localhost:5558')
        self.subconn = ZmqSubConnection(self.zf, self.sube)
        self.subconn.subscribe('')

        # Create the resource
        self.minidoFactory.pushconn = ZmqPushConnection(self.zf, self.push)
        self.subconn.gotMessage = self.minidoFactory.send2tcp
        return internet.TCPServer(LISTEN_PORT, self.minidoFactory)

    def stopService(self):
        del self.sube
        del self.push
        del self.subconn

application = Application('ZMQ2TCP')
service = ListenService()
service.setServiceParent(application)

zmq2tcp.py文件：

#!/usr/bin/env python
# **- encoding: utf-8 -**
"""
    Minido-Unleashed is a set of programs to control a home automation
    system based on minido from AnB S.A.

    Please check http://kenai.com/projects/minido-unleashed/

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

    ***

    This program connects to a STOMP server, and allow dual way communication
    with the minido bus, checking the validity of the packet before sending.
"""

###############################################################################
from __future__ import print_function
from twisted.application import internet, service
from twisted.internet.protocol import Protocol, ReconnectingClientFactory
from twisted.internet.protocol import Factory


# Other imports
import datetime
import time
import sys
import msgpack

# minido
from protocol import *

# txZMQ
from txzmq import ZmqFactory, ZmqEndpoint, ZmqPubConnection, ZmqSubConnection, ZmqPushConnection

MINIDO_LISTEN_PORT = 2323

class MinidoServerFactory(Factory):
    def __init__(self):
        self.connections = []

    def startedConnecting(self, connector):
        print('Started to connect.')

    def buildProtocol(self, addr):
        return MinidoProtocol(self)

    def clientConnectionLost(self, connector, reason):
        print('Lost connection.  Reason:', reason)
        ReconnectingClientFactory.clientConnectionLost(self, connector, reason)

    def clientConnectionFailed(self, connector, reason):
        print('Connection failed. Reason:', reason)
        ReconnectingClientFactory.clientConnectionFailed(self, connector,
                                                         reason)
    def recv_message(self, message):
        print(': TCP to STOMP : %s' % (' '.join(map(lambda i: '{0:02X}'.format(i),message))))
        pushconn.push(msgpack.packb(message))

    def send2tcp(self, rawmessage, tag):
        message = msgpack.unpackb(rawmessage)
        if type(message) is tuple:
            print(": STOMP to %i TCP client(s) : %s" % (
                len(self.connections),
                ' '.join(map(lambda i: '{0:02X}'.format(i),message))))
            for conn in self.connections:
                conn.send_data(message)

if __name__ == '__main__':
    from twisted.internet import reactor
    zf = ZmqFactory()
    minidoFactory = MinidoServerFactory()
    sube = ZmqEndpoint('connect', 'tcp://localhost:5557')
    subconn = ZmqSubConnection(zf, sube)
    subconn.subscribe('')

    subconn.gotMessage = minidoFactory.send2tcp

    push = ZmqEndpoint('connect', 'tcp://localhost:5558')
    minidoFactory.pushconn = ZmqPushConnection(zf, push)
    reactor.listenTCP(MINIDO_LISTEN_PORT, minidoFactory)
    reactor.run()

最佳答案

问题是在您的ListenService.startService中，您正在创建并返回一个TCPServer服务，但是您没有启动该服务。

IService.startService不返回值，因此，return internet.TCPServer(LISTEN_PORT, self.minidoFactory)而不是internet.TCPServer(LISTEN_PORT, self.minidoFactory).startService()。

但是，这有一个明显的问题，那就是您的stopService随后将不记得该TCPServer在哪里停止它。最好将此因素分解为尽快创建TCPServer，并随您的服务一起启动/停止它，如下所示：

class ListenService(service.Service):
    def __init__(self):
        self.zf = ZmqFactory()
        self.minidoFactory = MinidoServerFactory()
        self.tcpService = internet.TCPServer(LISTEN_PORT, self.minidoFactory)

    def startService(self):
        self.sube = ZmqEndpoint('connect', 'tcp://localhost:5557')
        self.push = ZmqEndpoint('connect', 'tcp://localhost:5558')
        self.subconn = ZmqSubConnection(self.zf, self.sube)
        self.subconn.subscribe('')

        # Create the resource
        self.minidoFactory.pushconn = ZmqPushConnection(self.zf, self.push)
        self.subconn.gotMessage = self.minidoFactory.send2tcp
        self.tcpService.startService()

    def stopService(self):
        del self.sube
        del self.push
        del self.subconn
        return self.tcpService.stopService()

关于python - 带有TCPServer的扭曲应用程序(.tac)无法正常工作，而常规Twisted .py可以与listenTCP一起使用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/26129899/