server.py 文件源码

def ack_loop():
    listen_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    listen_sock.bind(('', 9033))
    listen_sock.settimeout(5)  # 5 second timeout

    # wait for an ack
    try:
        data, addr = listen_sock.recvfrom(2048)
        if json.loads(data)['ack']:
            print 'Got ack from', addr
            state['ack'] = True
        else:
            state['ack'] = False
    except socket.timeout:
        print 'Didn\'t get ACK from client'
        state['ack'] = False