twisted 学习笔记二：创建一个简单TCP客户端

 #coding=utf-8

 from twisted.internet import reactor,protocol

 class QuickClient(protocol.Protocol):
     def connectionMade(self):
         print dir(self.transport.getPeer())
         print "port:%s type:%s "%(self.transport.getPeer().port, self.transport.getPeer().type)
         print "connection to ",self.transport.getPeer().host

 class BasicClientFactory(protocol.ClientFactory):
     protocol = QuickClient
     def clientConnectionLost(self, connector, reason):
         print "connection lost ",reason.getErrorMessage()
         reactor.stop()
     def clientConnectionFailed(self, connector, reason):
         print "connection failed ",reason.getErrorMessage()
         reactor.stop()

 reactor.connectTCP('www.google.com', 80, BasicClientFactory())
 reactor.run()

connectionMade：链接成功后自动调用
Factory的作用是管理连接事件

clientConnectionLost：连接断开或丢失时调用

clientConnectionFailed：连接失败时调用

transport为Protocol一个内建属性 getPeer 对象包含有连接信息（域名、端口、类型(TCP,UDP)）