UDP test client

udpclient.py

import sys
import socket
import json
import hashlib

UDP_IP = "127.0.0.1"
UDP_PORT = 5005

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

for line in sys.stdin:
  if line:
    sock.sendto(line.strip().encode('utf8'), (UDP_IP, UDP_PORT))
    reply = sock.recv(65536).decode('utf8')
    print(reply)
    checksum = json.loads(reply)["checksum"]
    message = json.loads(reply)["message"]
    mychecksum = hashlib.md5(message.encode('utf8')).hexdigest()
    if checksum == mychecksum:
      print('valid')
    else:
      print('invalid!!!', mychecksum)