udp_multicast.py

import socket


def udp_socket():
    return socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)


def receive():
    sock = udp_socket()
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
    sock.bind(('0.0.0.0', 8060))
    while True:
        try:
            print repr(sock.recv(1024))
        except KeyboardInterrupt:
            break
    sock.close()


def send():
    sock = udp_socket()
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    sock.sendto('Message.\n', 0, ('255.255.255.255', 8060))


if __name__ == '__main__':
    import sys
    if sys.argv[1] == 'receive':
        receive()
    elif sys.argv[1] == 'send':
        send()
    else:
        print "Unknown command: %r" % sys.argv[1]
        sys.exit(1)