Well, you'd presumably have a connection to each of the servers in the form of a client factory and a protocol instance. Then, every time you get a message, you figure out which protocol instance you want (the one for the appropriate server) and send a message to it. You could do that with self.transport.write, of course, but it would be much easier to just use a ready-made RPC thing.
One such RPC thing is AMP, which comes with Twisted. You can read more about it here: http://amp-protocol.net/ https://twistedmatrix.com/documents/current/core/howto/amp.html You will probably end up having a command like HandlePacket or something (presumably you can come up with a more apt domain-specific name), and something close to self.servers[serverFor(packet.origin)].callRemote(HandlePacket, packet.data), or whatever. I realize this is still pretty vague and high level, so feel free to ask more questions about the parts that are unclear :) On Thu, Feb 28, 2013 at 10:59 PM, Benjamin BERTRAND <bee...@gmail.com>wrote: > Hi, > > I have to replace a piece of software that sniffs the traffic on one > interface. It gets different messages that are each associated to a > specific emitter. > On the same machine, one server is started for each emitter (on a > different port). > And the application is just supposed to use the proper server to send the > messages captured (to a client on another machine). > > Not sure if it's clear, but basically if I have 2 emitters A and B, I'll > start 2 servers (a and b). > My sniffer will get messages A1, A2, B1, B2, B3... > I have to pass messages A1, A2 to server a, that will just send them to > the client (if it is connected of course). > And B1, B2, B3 to server b. > I don't need any buffering. If no client is connected, messages captured > are just discarded. > > To sniff the network, I want to use pylibpcap or pcapy. > I found this example to make it work with twisted: > http://dound.com/2009/09/integrating-twisted-with-a-pcap-based-python-packet-sniffer/ > > Starting several servers that use the same protocol is not a problem. > But how do I pass the messages captured to the right server? > How do I make the link between the function sniffing the network and the > servers? > > Thanks > > Benjamin > _______________________________________________ > Twisted-Python mailing list > Twisted-Python@twistedmatrix.com > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > -- cheers lvh
_______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
