在python中實現一個信息接受與發送功能，具體方法如下：
import socket
import time
ANY = '0.0.0.0'
MCAST_ADDR = '224.168.2.9'
MCAST_PORT = 1600
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
sock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1) #允許端口復用
sock.bind((ANY,MCAST_PORT)) #綁定監聽多播數據包的端口
sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 255)
status = sock.setsockopt(socket.IPPROTO_IP,
socket.IP_ADD_MEMBERSHIP,
socket.inet_aton(MCAST_ADDR) + socket.inet_aton(ANY));
sock.setblocking(0)
ts = time.time()
while 1:
try:
data, addr = sock.recvfrom(1024)
except socket.error, e:
pass
else:
print "We got data!"
print "FROM: ", addr
print "DATA: ", data
