Learning Python Networking - Second Edition

Implementing the UDP server

When working with UDP, the only difference if we compare this to working with TCP in Python is that when creating the socket, you have to use SOCK_DGRAM instead of SOCK_STREAM. Use the following code to create the UDP server. You can find the following code in the udp_server.py file inside the udp folder:

#!/usr/bin/env python3import socket,sysUDP_IP_ADDRESS = "127.0.0.1"UDP_PORT = 12345buffer=4096socket_server=socket.socket(socket.AF_INET,socket.SOCK_DGRAM) #UDPsocket_server.bind((UDP_IP_ADDRESS,UDP_PORT))while True:    print("Waiting for client...")    data,address = socket_server.recvfrom(buffer)    data = data.strip()    print("Data Received from address: ",address)    print("message: ", data)    try: response = "Hi %s" % sys.platform ...