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#!/usr/bin/python python 
# -*- coding:UTF-8 -*-
# UDP 广播接收
from socket import *

HOST = '0.0.0.0'
PORT = 6681
BUFSIZE = 1024

broadcastrecv = socket(AF_INET, SOCK_DGRAM)
broadcastrecv.bind((HOST,PORT))
print('wating...')
while True:
    data, addr = broadcastrecv.recvfrom(BUFSIZE)
    print('recv: %s %s'%(addr,data) )
 
broadcastrecv.close()

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#!/usr/bin/python python 
# -*- coding:UTF-8 -*-
# UDP广播发送
from socket import *

HOST = '192.168.3.255'
PORT = 6681
BUFSIZE = 1024
ADDR = (HOST, PORT)

broadcast = socket(AF_INET, SOCK_DGRAM)
broadcast.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
while True:
    data = raw_input('>')
    if not data:
        break
    print("send: %s"%data)
    broadcast.sendto(data, ADDR)
 
broadcast.close()