How can I use asyncore with the multiprocessing IPC module in Python 3?

Question

I'm trying to utilise the Client/Server architecture of the multiprocessing module to facilitate communication between my Python scripts. I want to be able to implement a separate connection listener apart from my main event loop, using asyncore . How can I do this?

While there is no outward documentation of how to do so, I've tried to construct a basic asyncore.dispatcher using the listener socket from multiprocessing.Listener :

import asyncore
import socket
from multiprocessing.connection import Listener, Client

class ConnectionListener(asyncore.dispatcher):
    def __init__(self, ln):
        asyncore.dispatcher.__init__(self)
        self.set_socket(ln._listener._socket)
    def handle_accepted(self, sock, addr):
        print("Accepted a client!")

if __name__ == "__main__":
    address = ('localhost', 19378)
    try:
        ln = Listener(address)
        x = ConnectionListener(ln)
        while True:
            asyncore.loop()
    except socket.error:
        c = Client(address)
        print("Client is trying to connect")

While the server does loop, it never fires handle_accepted .

Answer 1

我认为您正在寻找的方法是handle_accept，而不是handle_accepted。