[Twisted-Python] Sending commands when using Telnet client
Alejandro J. Cura
alecu at vortech.com.ar
Tue Feb 28 17:24:15 EST 2006
As you can see in twisted.internet.protocol.Factory
def buildProtocol(self, addr):
"""Create an instance of a subclass of Protocol.
The returned instance will handle input on an incoming server
connection, and an attribute \"factory\" pointing to the creating
Override this method to alter how Protocol instances get created.
@param addr: an object implementing
p = self.protocol()
p.factory = self
ReconnectingClientFactory inherits that method, so each TelnetClient
instance it builds will have a self.factory you can use to access
your cmd list.
Hope that helps,
On 2/28/06, Don Smith <donwsmith at gmail.com> wrote:
> Yes, I'm sort of a Twisted newbie, so maybe this has an obvious answer, but
> I'm just not seeing it.
> I have a Twisted program that I need to add in the ability to make a client
> telnet connection to a remote server and send some commands to it and deal
> with the data received.
> In my main program I have this line of code:
> reactor.connectTCP("mytelnethost", 24,
> Connections.TelnetConnection("myname of object",events,"command to run"))
> My Connections.TelnetConnection class looks like this:
> from twisted.internet.protocol import Protocol, ReconnectingClientFactory
> from twisted.conch.telnet import Telnet
> class TelnetClient(Telnet):
> def connectionMade(self):
> print "connection made"
> def write(self, data):
> print data
> Telnet._write(self, data+"\r\n")
> def dataReceived(self, data):
> print "received:", data
> if "User Name:" in data:
> if "Password:" in data:
> if ">" in data:
> if "Connector Name:" in data:
> self.write("another command")
> class TelnetConnection(Connection, ReconnectingClientFactory):
> """ Telnets to host:port and executes cmd. cmd """
> protocol = TelnetClient
> def __init__(self, name, eventQueue, cmd=None):
> Connection.__init__(self, name)
> def clientConnectionFailed(self, connector, reason):
> print 'connection failed:', reason.getErrorMessage()
> def clientConnectionLost(self, connector, reason):
> print 'connection lost:', reason.getErrorMessage()
> This all works great, except that the command sequence is hard coded in the
> TelnetClient class. I want to be able to reference the "cmd" parameter,
> which could be a list of commands to iterate over,etc. But I don't see how I
> can access the "cmd" parameter that gets passed into the TelnetConnection
> class from within the TelnetClient class.
> I'm really desparate for some help, I've been racking my brain on this since
> yesterday morning.
> Twisted-Python mailing list
> Twisted-Python at twistedmatrix.com
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