A simple echo client & server based on twisted framework

echoserver.py

from twisted.internet.protocol import Protocol, ServerFactory
from twisted.internet import reactor

__author__ = 'xueleng'


class Echo(Protocol):
    def dataReceived(self, data):
        self.transport.write(data)


class EchoFactory(ServerFactory):
    def buildProtocol(self, addr):
        return Echo();


reactor.listenTCP(8000, EchoFactory())
reactor.run()

echoclient.py

from twisted.internet.protocol import Protocol, ClientFactory
from twisted.internet import reactor

__author__ = 'xueleng'


class EchoClient(Protocol):
    def connectionMade(self):
        self.transport.write('Hello, World!')

    def dataReceived(self, data):
        print 'Server said: %s' % data
        self.transport.loseConnection()


class EchoFactory(ClientFactory):
    def buildProtocol(self, addr):
        return EchoClient()

    def clientConnectionFailed(self, connector, reason):
        print 'Connection failed'
        reactor.stop()

    def clientConnectionLost(self, connector, reason):
        print 'Connection lose'
        reactor.stop()


reactor.connectTCP('localhost', 8000, EchoFactory())
reactor.run()