[Twisted-Python] Getting factory with AuthenticatingTelnetProtocol

Lucas Taylor ltaylor.volks at gmail.com
Sat Feb 27 19:43:48 EST 2010

On 2/27/10 6:19 AM, Skye wrote:
> Hello,
> I used the code from this thread to figure out how to use 
> the twisted.conch.telnet.AuthenticatingTelnetProtocol class:
> http://www.mail-archive.com/twisted-python@twistedmatrix.com/msg01581.html
> (with the addition of av.state = 'Command' in requestAvatar(), it works great)
> However, after the handoff to the new protocol MyTelnet, self.factory 
> isn't set.  How can I pass along the parent factory from the 
> AuthenticatingTelnetProtocol  instance to the StatefulTelnetProtocol instance?
> Sorry if this isn't phrased correctly - I'm new to Twisted.  
> Thanks,
> Skye

Rather than pass it around, you could set the factory instance as an
attribute of the transport:

f = protocol.ServerFactory()
f.protocol = lambda: TelnetTransport(AuthenticatingTelnetProtocol, p)
f.protocol.factory = f

then the factory will be available from MyTelnet.transport:

class MyTelnet(StatefulTelnetProtocol):
    def telnet_Command(self, line):
        print "line received via telnet", line
        print "The Server factory is a: %s" % (self.transport.factory)


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