# Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. from twisted.internet import reactor, protocol class Echo(protocol.Protocol): """This is just about the simplest possible protocol""" def dataReceived(self, data): "As soon as any data is received, write it back." self.transport.write(data) def main(): """This runs the protocol on port 8000""" factory = protocol.ServerFactory() factory.protocol = Echo reactor.listenTCP(8000,factory) reactor.run() # this only runs if the module was *not* imported if __name__ == '__main__': main()