twisted实现broardcast消息

一下是聊天服务端代码：（实现广播）

#! /usr/bin/env python
#coding=utf-8

from twisted.internet import protocol
from twisted.protocols import basic
from twisted.python import log
from twisted.internet import reactor
import sys

class ConfigServer(basic.LineReceiver):
    def __init__(self):
        pass

    def lineReceived(self, line):
        if line == 'quit':
            self.sendLine("Goodbye.")
            self.transport.loseConnection()
        else:
            self.broadcast(line)

    def broadcast(self, msg):
        for client in self.factory.clients:
            client.sendLine("someone said: %s" % msg);

    def connectionMade(self):
        self.factory.clients.append(self)
        print "Connect from %s.." % self.transport.getHost()
        self.sendLine("Welcome...%s" % self.transport.getHost())

    def connectionLost(self, reason):
        self.factory.clients.remove(self)
        # self.sendLine("Disconnect...%s" % self.transport.getHost())
        pass

class ConfigServerFactory(protocol.ServerFactory):
    protocol = ConfigServer
    clients = []

def main():
    log.startLogging(sys.stdout)
    reactor.listenTCP(8080,ConfigServerFactory())
    reactor.run()

if __name__ == '__main__':
    main()