<PYTHON> TCP_Echo_Server

from twisted.internet import protocol, reactor
 
class EchoTCP(protocol.Protocol):
    def dataReceived(self, data):
        self.transport.write(data)
 
class EchoFactory(protocol.Factory):
    def buildProtocol(self, addr):
        return EchoTCP()
 
print "Starting server."
reactor.listenTCP(9001, EchoFactory())
reactor.run()