python - multicast receive with esp8266

https://arduino-dds.tistory.com/entry/esp8266-multicast-with-python-pc

esp8266 - multicast with python pc

Code

 

import socket
import struct
 
MCAST_GRP = '224.1.1.1'
MCAST_PORT = 5123
 
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:
    data, addr = sock.recvfrom(1024)
    print(f'received message: {data} {addr}')