upd簡單廣播例子

給區域網同一網段傳送廣播包(同區域網不同網段暫時還去看)

廣播包傳送者:

#coding=gbk

#!/python/bin
import socket
sock = socket.socket(socket.af_inet, socket.sock_dgram)
sock.setsockopt(socket.sol_socket, socket.so_reuseaddr, 1)
sock.setsockopt(socket.sol_socket, socket.so_broadcast, 1)
sock.bind(('', 3333))
while 1:
try:
data, addr = sock.recvfrom(1024)
print "r", data, addr
ret = sock.sendto("all msg", addr)
print "ret:", ret
except keyboardinterrupt:
raise

廣播接受者, 向區域網廣播乙個包, 如果有傳送接收(監聽), 傳送者則把內容傳送給廣播者

import socket

sock = socket.socket(socket.af_inet, socket.sock_dgram)

sock.setsockopt(socket.sol_socket, socket.so_broadcast, 1)

addr = ('

', 3333)

print sock.sendto("x", addr)

while 1:

data = sock.recvfrom(1024)

print data

異或這樣

#coding=gbk

#!/python/bin
import socket
import threading
import time
sock = socket.socket(socket.af_inet, socket.sock_dgram)
sock.setsockopt(socket.sol_socket, socket.so_reuseaddr, 1)
sock.setsockopt(socket.sol_socket, socket.so_broadcast, 1)
sock.bind(('', 3333))
def proc():
while 1:
for addr in addrs:
sock.sendto("msg", addr)
time.sleep(1)
t = threading.thread(target=proc)
t.setdaemon(true)
addrs = 
t.start()
while 1:
try:
data, addr = sock.recvfrom(1024)
print "r", data, addr
ret = sock.sendto("all msg", addr)
print "ret:", ret
except keyboardinterrupt:
raise

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