Twisted 实现的客户端和服务器端的单次连接问题

1服务器端代码：

from twisted.internet.protocol import Factory
from twisted.protocols.basic import LineReceiver
from twisted.internet import reactor
import pdb

class Chat(LineReceiver):

    def __init__(self, users):
        self.users = users
        self.name = None
        self.state = "GETNAME"

    def connectionMade(self):
        self.sendLine("Please input your url:")

    def connectionLost(self, reason):
        if self.name in self.users:
            del self.users[self.name]

    def lineReceived(self, line):
        #pdb.set_trace()
        if self.state == "GETNAME":
            self.handle_GETNAME(line)

    def handle_GETNAME(self, name):
        if name in self.users:
            #self.sendLine("Name taken, please choose another.")
            pass
        #pdb.set_trace()
        print name
        self.sendLine("%s"%(name))
        self.name = name
        self.users[name] = self
        self.state = "GETNAME"
        #pass
        

class ChatFactory(Factory):

    def __init__(self):
        self.users = {} # maps user names to Chat instances

    def buildProtocol(self, addr):
        return Chat(self.users)


reactor.listenTCP(8080, ChatFactory())
reactor.run()

2.客户端代码：

from twisted.internet import protocol,reactor
from twisted.protocols.basic import LineReceiver

HOST='localhost'
PORT=8080
      
class TSClntProtocol(LineReceiver):
    def connectionMade(self):
        #self.sendLine("reader")
        pass
    def lineReceived(self,line):
        print "%s"%line
        #message=raw_input(">")
        message="http://localhost:8080"
        self.sendLine(message)
        self.transport.loseConnection()
class TSClntFactory(protocol.ClientFactory):
    protocol=TSClntProtocol
    #clientConnectionLost=clientConnectionFailed=\
    #lambda self,connector,reason:reactor.stop()         
reactor.connectTCP(HOST,PORT,TSClntFactory())         
reactor.run()