python UDP 局域网广播消息

server端：

# -*- coding: utf-8 -*-
import ctypes
import socket

# ipv4        SOCK_DGRAM指定了这个Socket的类型是UDP
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
# 绑定 客户端口和地址:
s.bind(('', 9999))
print 'Bind UDP on 9999...'
while True:
    # 接收数据 自动阻塞 等待客户端请求:
    data, addr = s.recvfrom(1024)
    message = 'Received from %s:%s.' % (addr, data)
    print message
    ctypes.windll.user32.MessageBoxA(0, data.decode("utf-8").encode('gb2312'), u' 信息'.encode('gb2312'), 0)

client端

# -*- coding: utf-8 -*-

import socket

'''
客户端使用UDP时，首先仍然创建基于UDP的Socket，然后，不需要调用connect()，直接通过sendto()给服务器发数据：
'''
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
PORT = 9999
network = '<broadcast>'
# 发送数据:
s.sendto(u"有新文件到达，请登录http://192.168.1.2:8080查看".encode("utf-8"), (network, PORT))

s.close()

python脚本打包成exe，可以使用PyInstaller

pip install PyInstaller
pyinstaller xxx.py