Hi, I have managed to get a simple server going. It seems to accept multiple connections correctly. I am a little puzzled as to how to achieve an asynchonous application using twisted. Twisted itself seems asynchronous, but my code is blocked by the call: reactor.run() Is there anyway I can return from the reactor to run other code, like GUI stuff, or other processing? My code: import GUI from zope.interface import Interface from twisted.internet import reactor from twisted.protocols import basic from twisted.internet.protocol import Protocol, Factory class CNetwork(basic.LineReceiver): def connectionMade(self): GUI.Print("New Client: %s" % self.transport.getPeer().host) self.send = lambda x: self.transport.write(x+"\r\n") ## if self.factory.server_data: ## self.send("\r\n".join(self.factory.server_data)) ## else: ## self.send("You are logged in") GUI.Print("Entering loop for client %s" % self.transport.getPeer().host) def connectionLost(self, reason): GUI.Print( "%s has closed the connection" % self.transport.getPeer().host ) def dataReceived(self, data): data = data.strip() if not data: self.transport.loseConnection() return GUI.Print("%s says %r" % (self.transport.getPeer().host,data)) self.transport.write("You said: %r\r\n" % data ) ## self.factory.server_data.append(data + "~~") GUI.Print("Ready to receive more data") class CNetworkFactory(Protocol): factory = Factory() factory.protocol = CNetwork def __init__(self, max_clients): self.max_clients = max_clients self.connected_clients = 0 self.server_data = [] def doStart(self): GUI.Print("Factory started -- server is waiting for a connection") def doStop(self): GUI.Print("Factory stopped -- server is now closed") def buildProtocol(self, addr): GUI.Print("Connection attempt....") return CNetwork() def main(): reactor.listenTCP(14500, CNetworkFactory(max_clients = 2)) reactor.run() if __name__ == "__main__": main() ##DO SOMETHING ELSE HERE! ################################### Thanks for your help _________________________________________________________________ The next generation of Hotmail is here! http://www.newhotmail.co.uk