[Copy] UDP Broadcasting Using PySocket

Socket Server:

# -*- coding: cp936 -*-
"""
广播服务器,接收来自广播的消息,并进行应答
设置socket选项:SO_BROADCAST
"""
import socket

host = ""
port = 50000

s = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
s.setsockopt(socket.SOL_SOCKET,socket.SO_BROADCAST,1)
s.bind((host,port))

while 1:
    message,address = s.recvfrom(8192)
    print "Got data from",address
    s.sendto("I am here",address)

 

 

Socket Client:

# -*- coding: cp936 -*-
"""
对socket进行广播,使用地址<broadcast>,LAN中的所有机器会收到此消息
此客户端收到应答消息后退出.
"""
import socket,sys
dest = ("<broadcast>",50000)
s = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET,socket.SO_BROADCAST,1)
s.sendto("Hello",dest)
while 1:
    (buf,address) = s.recvfrom(2048)
    if not len(buf):
        break
    print "received from %s:%s" % (address,buf)

 

 

See http://blog.chinaunix.net/u/19742/showart_411039.html