[Twisted-Python] How to use the TimeoutProtocol policy?

[Martin van Es]

Hi,

I'm trying to timeout a really simple LineReceiver protocol.

It's function is to connect to a daemon, receive a line that's to be
displayed to an end-user upon which the user should undertake some
action. The action will trigger a second line (fail/success) at which
point the daemon will close the connection. If, however, the end-user
does not follow-up on the first challenge I want the script to timeout
with a failed result.

Now, I have the LineReceiver do exactly what I want, but I can't for
the life of me understand how I should "wrap" it in the TimoutProtocol
so that it disconnects after a couple of seconds?

This is my Factory:
class WebSSOFactory(ClientFactory):
 pamh = None
 client = None

 def __init__(self, pamh):
   self.pamh = pamh

 def clientConnectionLost(self, connector, reason):
   reactor.stop()

 def buildProtocol(self, addr):
   client = WebSSOClient()
   #client = TimeoutProtocol(self, WebSSOClient, 5)
   client.pamh = self.pamh
   self.client = client
   return client

And this is the protocol:
class WebSSOClient(LineReceiver):
 line = None
 pamh = None
 state = 'start'

 def __init__(self):
   print("__init__")
   self.setTimeout(5)

 def lineReceived(self, line):
   print("lineReceived")
   self.line = line
   if self.state == 'start':
     self.pamh.conversation(self.pamh.Message(self.pamh.PAM_PROMPT_ECHO_OFF,
"Visit http://***/login/%s to login\nand press <enter> to continue." %
line))
     self.state = None
   else:
     self.transport.loseConnection()

Before anyone starts to scream http (no s): This is all test/debug. I
want the timeout to work before I deploy to something more serious.

The client is loaded straightforward using a reactor.connectTCP() with
the instantiated factory object.

Best regards,
Martin
-- 
If 'but' was any useful, it would be a logic operator