Pardon my double-posting. Here it is, a little less confusing: #!/usr/bin/env python from twisted.internet.protocol import Factory from twisted.conch.telnet import TelnetProtocol, TelnetTransport from twisted.conch.telnet import WILL
# More info: http://www.faqs.org/rfcs/rfc1184.html LINEMODE = chr(34) LINEMODE_EDIT = chr(1) + chr(1) LINEMODE_TRAPSIG = chr(1) + chr(2) LINEMODE_MODEACK = chr(1) + chr(4) LINEMODE_SOFTTAB = chr(1) + chr(8) LINEMODE_LITECHO = chr(1) + chr(16) class LinemodeProtocol(TelnetProtocol): def dataReceived(self, data): if self.transport.lines: line = data.rstrip() print("data received (normal): " + line) if line == "gounbuffered": self.transport.requestNegotiation(LINEMODE, LINEMODE_TRAPSIG) # Client should only trap signals locally self.transport.lines = False else: # manually buffer data here print("data received (unbuffered): " + data) if data == "n": self.transport.requestNegotiation(LINEMODE, LINEMODE_EDIT) # Go back to buffered self.transport.lines = True class LinemodeTransport(TelnetTransport): def connectionMade(self): self.lines = True self.do(LINEMODE) # Ask client to begin sub-negotation of linemode TelnetTransport.connectionMade(self) def commandReceived(self, command, argument): if argument == LINEMODE: if command == WILL: # Client said OK to our DO; let's... do it self.requestNegotiation(LINEMODE, LINEMODE_EDIT) # Buffered mode else: TelnetTransport.commandReceived(self, command, argument) class LinemodeFactory(Factory): def buildProtocol(self, addr): return LinemodeTransport(LinemodeProtocol) if __name__ == '__main__': from twisted.internet import reactor port = 2222 factory = LinemodeFactory() reactor.listenTCP(port, factory) reactor.run() On Sat, Dec 3, 2011 at 15:22, Patrick Mylund Nielsen <twis...@patrickmylund.com> wrote: > Hi Lee, > > Here is a complete example that works with Twisted 11.0. LINEMODE > itself is enabled at connect, but it has different modes that > determine what is sent when by the client. (See section 2.2 of > http://www.faqs.org/rfcs/rfc1184.html) > > ##### > > #!/usr/bin/env python > from twisted.internet.protocol import Factory > from twisted.conch.telnet import TelnetProtocol, > StatefulTelnetProtocol, TelnetTransport > from twisted.conch.telnet import DO, DONT, WILL, WONT > > LINEMODE = chr(34) > LINEMODE_EDIT = chr(1) + chr(1) > LINEMODE_TRAPSIG = chr(1) + chr(2) > LINEMODE_MODEACK = chr(1) + chr(4) > LINEMODE_SOFTTAB = chr(1) + chr(8) > LINEMODE_LITECHO = chr(1) + chr(16) > > class LineModeProtocol(TelnetProtocol): > > def connectionMade(self): > print("Connection made!") > > def connectionLost(self, reason): > print("Connection lost!") > > def dataReceived(self, data): > if self.transport.lines: > line = data.rstrip() > print("data received (normal): " + line) > if line == "gounbuffered": > self.transport.requestNegotiation(LINEMODE, > LINEMODE_TRAPSIG) # Only trap signals locally > self.transport.lines = False > else: > # manually buffer data here > print("data received (linemode): " + data) > if data == "n": > self.transport.requestNegotiation(LINEMODE, > LINEMODE_EDIT) # Change to edit mode > self.transport.lines = True > > class LineModeTransport(TelnetTransport): > > def connectionMade(self): > self.lines = True > self.do(LINEMODE) # Ask client to begin sub-negotation of linemode > TelnetTransport.connectionMade(self) > > def commandReceived(self, command, argument): > if argument == LINEMODE: > if command == WILL: # Client said OK to our DO; let's... do it > self.requestNegotiation(LINEMODE, LINEMODE_EDIT) # The > normal (buffered) mode > else: > TelnetTransport.commandReceived(self, command, argument) > > class LineModeFactory(Factory): > > def buildProtocol(self, addr): > return LineModeTransport(LineModeProtocol) > > if __name__ == '__main__': > from twisted.internet import reactor > > port = 2222 > factory = LineModeFactory() > > reactor.listenTCP(port, factory) > reactor.run() > > ##### > > There is probably an easier way to check the state of LINEMODE, e.g. > with getOptionState, but it works. > > Example: > > Client: > # telnet localhost 2222 > Trying 127.0.0.1... > Connected to localhost. > Escape character is '^]'. > How are you? > gounbuffered > testnback again > > Server: > # ./linemode.py > Connection made! > data received (normal): How are you? > data received (normal): gounbuffered > data received (linemode): t > data received (linemode): e > data received (linemode): s > data received (linemode): t > data received (linemode): n > data received (normal): back again > > Best, > Patrick > > On Sat, Dec 3, 2011 at 14:59, <exar...@twistedmatrix.com> wrote: >> On 03:53 am, lmors...@gmail.com wrote: >>>Jean-Paul, >>> >>>Thanks for your response. I still can't get self.will(LINEMODE) to work >>>but >>>I did get self.telnet_WILL(LINEMODE) to run without throwing an Error. >>>Can >>>you elaborate on what needs to happen in the enableRemote? My >>>impression >>>was that once I send the negotiation WILL command from server to the >>>client, the client will respond with either a DO or a DONT. What >>>further >>>logic is necessary? >> >> I can't say what further logic is necessary, because I don't know what >> logic you have now. The description of your code you gave above is a >> good introduction to an actual code listing (<http://sscce.org/>), but >> it's not sufficient on its own. >> >> Jean-Paul >> >> _______________________________________________ >> Twisted-Python mailing list >> Twisted-Python@twistedmatrix.com >> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python _______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
