asyncore echo

echo.py

import asyncore
import socket
import sys

class EchoHandler(asyncore.dispatcher_with_send):

    def handle_read(self):
        data = self.recv(8192)
        if data:
            self.send(data)

class EchoServer(asyncore.dispatcher):

    def __init__(self, host, port):
        asyncore.dispatcher.__init__(self)
        self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
        self.set_reuse_addr()
        self.bind((host, port))
        self.listen(5)

    def handle_accept(self):
        pair = self.accept()
        if pair is not None:
            sock, addr = pair
            print 'Incoming connection from %s' % repr(addr)
            handler = EchoHandler(sock)

if __name__ == '__main__':
    host = sys.argv[1] if len(sys.argv) >= 2 else '127.0.0.1'
    port = int(sys.argv[2]) if len(sys.argv) == 3 else 8080
    server = EchoServer(host, port)
    asyncore.loop()