How to "merge" two Python twisted applications?

Question

I have two applications, written on twisted framework, for example one using twisted.web, and other using twisted.protocols.*, not web. How can I "merge" them in one, effectively sharing one reactor for both apps?

What are the best practices for that tasks? Actually I need to connect SIPSimpleApp and TornadoWeb. They both can use twisted reactor.

Answer 1

In a twisted application you can install more than one protocol-factory-client instance

Twisted will handle connection for all application.

So you can instanciate as server/client as you want and , you're right , reactor.run() must be launch only one time.

So you can import your protocole and thant run the reactor loop . exemple based on the simpliest echo example:

from twisted.internet import protocol, reactor

class Echo(protocol.Protocol):
    def dataReceived(self, data):
        self.transport.write(data)

class EchoFactory(protocol.Factory):
    def buildProtocol(self, addr):
        return Echo()

class Echo2(protocol.Protocol):
    def dataReceived(self, data):
        self.transport.write(data+" From 2")

class EchoFactory2(protocol.Factory):
    def buildProtocol(self, addr):
        return Echo2()

reactor.listenTCP(1234, EchoFactory())

reactor.listenTCP(1235, EchoFactory2())
reactor.run()

that's work

You can also use twistd system, and the service collection, documentation here