UDP test server

udpserver.py

import socket
import hashlib
import json

UDP_IP = "127.0.0.1"
UDP_PORT = 5005

sock = socket.socket(socket.AF_INET, # Internet
                     socket.SOCK_DGRAM) # UDP
sock.bind((UDP_IP, UDP_PORT))

while True:
  data, addr = sock.recvfrom(65536) # buffer size is 1024 bytes
  message = data.decode('utf8')
  checksum = hashlib.md5(data).hexdigest()
  reply = json.dumps({"message": message, "checksum": checksum})
  sock.sendto(reply.encode('utf8'), (addr[0], addr[1]))