# Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """ Simple echo server that echoes back client input. You can run this .tac file directly with: twistd -ny telnet_echo.tac This demo sets up a listening port on 6023 which accepts telnet connections. No login for the telnet server is required. """ from twisted.conch.telnet import TelnetTransport, TelnetProtocol from twisted.internet.protocol import ServerFactory from twisted.application.internet import TCPServer from twisted.application.service import Application class TelnetEcho(TelnetProtocol): def enableRemote(self, option): self.transport.write(b"You tried to enable " + option + b" (I rejected it)\r\n") return False def disableRemote(self, option): self.transport.write(b"You disabled " + option + b"\r\n") def enableLocal(self, option): self.transport.write(b"You tried to make me enable " + option + b" (I rejected it)\r\n" % (option,)) return False def disableLocal(self, option): self.transport.write(b"You asked me to disable " + option + "\r\n") def dataReceived(self, data): self.transport.write(b"I received "+ data + b" from you\r\n") factory = ServerFactory() factory.protocol = lambda: TelnetTransport(TelnetEcho) service = TCPServer(6023, factory) application = Application("Telnet Echo Server") service.setServiceParent(application)