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

class EchoProtocol(basic.LineReceiver):
        def lineReceived(self, line):
                if line == 'quit':
                        self.sendLine("Goodbye.")
                        self.transport.loseConnection()
                else:
                        self.sendLine("you said: " + line )

class EchoServerFactory(protocol.ServerFactory):
        protocol = EchoProtocol

if __name__ == "__main__":
        port = 5001
        reactor.listenTCP(port, EchoServerFactory())
        reactor.run()