Question

我使用twisted来实现客户端。它工作正常。现在我希望能够将命令行参数传递给它，所以我需要实现一个twisted插件。我已经执行了很多搜索来查找将显示如何将程序转换为插件的资源。但是我找不到我想要的东西。

以下是我的client.py代码的相关部分：

import sys
import time
import os
import errno
import re
from stat import *
global runPath

runPath = '/home/a02/Desktop/'

from twisted.python import log
from GlobalVariables import *
from twisted.internet import reactor, threads, endpoints
from time import sleep
from twisted.internet.protocol import ClientFactory# , Protocol
from twisted.protocols import basic
import copy


class MyChat(basic.LineReceiver):
    def connectionMade(self):
        print "Connected to the server!"
        EchoClientFactory.buildClientObject(self.factory, self)
        self.runPythonCommands = RunPythonCommands ()
        return

    def connectionLost(self, reason):
        print "Lost Connection With Server!"
        #self.factory.clients.remove(self)
        #self.transport.loseConnection()
        print 'connection aborted!'
        #reactor.callFromThread(reactor.stop)
        reactor.stop ()
        return

    def lineReceived(self, line):
        #print "received", repr(line)
        line = line.strip ()
        if line == "EOF":
            print "Test Completed"
        self.factory.getLastReceivedMsg (line)
        exeResult = self.runPythonCommands.runPythonCommand(line.strip())

        self.sendLine(exeResult)
        EchoClientFactory.lastReceivedMessage = ""
        EchoClientFactory.clientObject[0].receivedMessages = []
        return

    def message (self, line):
        self.sendLine(line)
        #print line
        return


class EchoClientFactory(ClientFactory):
    protocol = MyChat
    clientObject = []
    lastReceivedMessage = ''

    def buildClientObject (self, newClient):
        client = Client ()
        self.clientObject.append(client)
        self.clientObject[0].objectProtocolInstance = newClient

        return

    def getLastReceivedMsg (self, message):
        self.lastReceivedMessage = message
        self.clientObject [0].lastReceivedMsg = message
        self.clientObject[0].receivedMessages.append (message)
        return 
    def connectionLost (self):
        reactor.stop()
        return

    def clientConnectionFailed(self, connector, reason):
        print 'Connection failed. Reason:', reason
        connector.connect () 
        return

以下是我为client_plugin.py撰写的内容：

from zope.interface import implements
from twisted.python import usage
from twisted.plugin import IPlugin
from twisted.application.service import IServiceMaker
from twisted.application.internet import TCPServer
from twisted.spread import pb
from slave.client import EchoClientFactory,MyChat, Client, RunPythonCommands, MyError, line


class Options(usage.Options):
    optParameters = [["port", "p", 8789, "The port number to listen on."], ["host", "h", "192.168.47.187", "The host to connect to"]]

class MyServiceMaker(object):
    implements(IServiceMaker, IPlugin)
    tapname = "echoclient"
    description = "Echo Client"
    options = Options

    def makeService(self, options):
        clientfactory = pb.PBServerFactory(EchoClientFactory ())
        return TCPServer(options["host"],int(options["port"]), clientfactory)

serviceMaker = MyServiceMaker()

我使用了文档中提到的相同文件夹层次结构。由于我无法在网上找到足够的插件示例，我现在真的陷入了困境。我将不胜感激任何帮助。谁能告诉我如何更改代码？提前谢谢。

Answer 1

您是否应该使用tac文件从命令行运行它？

http://twistedmatrix.com/documents/12.2.0/core/howto/application.html#auto5

然后在另一个程序中使用MyChat类应该更容易......

Answer 2

您必须从MyServiceMaker().makeService方法返回主服务对象。尝试添加from twisted.internet import service然后在makeService添加此内容：top_service = service.Multiservice() 创建TCPServer服务：tcp_service = TCPServer(...) 将其添加到热门服务：tcp_service.setServiceParent(top_service) 然后返回热门服务：return top_service

您可能还需要查看来自Dave Peticolas的这一系列精彩教程（第16条是对您的问题有用的文章）

Answer 3

只需点击此链接即可获取文档和帮助：

twistedmatrix - docs

twisted.readthedocs.io -docs

from __future__ import print_function

from twisted.internet import reactor
from twisted.web.client import Agent
from twisted.web.http_headers import Headers

agent = Agent(reactor)

d = agent.request(
    'GET',
    'http://example.com/',
    Headers({'User-Agent': ['Twisted Web Client Example']}),
    None)

def cbResponse(ignored):
    print('Response received')
d.addCallback(cbResponse)

def cbShutdown(ignored):
    reactor.stop()
d.addBoth(cbShutdown)

reactor.run()

输出：

C:\Python27>python.exe twist001.py
Response received

如何编写Twisted客户端插件

3 个答案: