python socket 广播

from socket import *  
import time
    
HOST = ‘<broadcast>‘  
PORT = 9090  
BUFSIZE = 1024  
    
ADDR = (HOST, PORT)  
udpCliSock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  
udpCliSock.bind((‘‘, 0))  
udpCliSock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)  
count=10
while count>=0:  
    count-=1
    data=‘SSTOP&tuling‘ 
    if not data:  
        break  
    print "sending -> %s"%data  
    udpCliSock.sendto(data,ADDR)  
    time.sleep(1)
udpCliSock.close() 
exit(0)

import socket
import time
#初始化udp
s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET,socket.SO_BROADCAST,1)
#设置端口可以复用
s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
s.bind((‘‘,udpPort))

count=10
while count>=0:
    count-=1
    data,addr=s.recvfrom(1024)
    time.sleep(1)
s.close()
exit(0)