simple udp server/client

[cardmaker]

hello, im trying to make i simple udp server client (two in one).
the client send every 5 second a string to a server(port 23000) and save the respone in "reply = msgFromServer[0]".
in simultane the server wait if a client send a string and reply the "reply = msgFromServer[0]".

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import binascii import re import socket import sys import logging import os import time from multiprocessing import Process   localIP = "0.0.0.0" localPort = 5009   serverAddressPort   = ("192.168.0.107", 23000)   MESSAGE = "reply1" bufferSize  = 108 msgFromServer       = "Hello UDP Client" bytesToSend         = str.encode(msgFromServer)   def start_sender():     global reply     UDPClientSocket = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM)       while(True):         UDPClientSocket.sendto(bytesToSend, serverAddressPort)         time.sleep(5)       while(True):         msgFromServer = UDPClientSocket.recvfrom(bufferSize)         reply = msgFromServer[0]         def start_listener():     global reply     UDPServerSocket = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM)     UDPServerSocket.bind((localIP, localPort))       while(True):         bytesAddressPair = UDPServerSocket.recvfrom(108)         message = bytesAddressPair[0]         address = bytesAddressPair[1]         UDPServerSocket.sendto(reply, address)#here i reply the bytes from the sender msgFromServer[0] but nothing is sent     if __name__ == '__main__':     try:         p1 = Process(target = start_listener)         p1.start()         p2 = Process(target = start_sender)         p2.start()     except Exception as e:         print(e)         sys.exit()

but nothing is replaying when i client send a string for the listener on port 5009
anyone can help?

[cardmaker]

Doing some search i see if using multiprocess global variable are not shared between process, anyone can point me an example how do it?

[micseydel]

Doing some search i see if using multiprocess global variable are not shared between process

That's right, they're entirely separate processes so the variables are totally different objects.

anyone can point me an example how do it?

I Googled "python share variable between processes" and that looked promising. Feel free to ask back with specific questions / concerns.