#!/usr/bin/python3 
#Bertrand Vandeportaele 2019
#https://pymotw.com/2/socket/udp.html
import socket
import sys
import fcntl,errno,os
# Create a UDP socket
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
#server_address = ('localhost', 10000)
#premier champ vide pour recevoir depuis n'importe quelle adresse,sinon IP en chaine de caractères
server_address = ('', 10000)

sock.bind(server_address)
#fcntl.fcntl(sock, fcntl.F_SETFL, os.O_NONBLOCK) #rend les appels non bloquants
print('Press CTRL+C to quit')
try:
  while(True):
    # Receive response
    print('waiting to receive')
    data, server = sock.recvfrom(4096)
    print ( 'received "%s"' % data)
finally:
    print ( 'closing socket')
    sock.close()