View source for Python: UDP Multicast

Transmitter

 import socket
 
 MCAST_GRP = '224.1.1.1'
 MCAST_PORT = 5007
 
 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
 sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 2)
 sock.sendto("robot", (MCAST_GRP, MCAST_PORT))


Receiver

 import socket
 import struct 
 
 MCAST_GRP = '224.1.1.1'
 MCAST_PORT = 5007
 
 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
 sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 sock.bind(('', MCAST_PORT))
 mreq = struct.pack("4sl", socket.inet_aton(MCAST_GRP), socket.INADDR_ANY)
 
 sock.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, mreq)
 
 while True:
   print sock.recv(10240)



==Referensi==

* http://stackoverflow.com/questions/603852/multicast-in-python
* https://wiki.python.org/moin/UdpCommunication