Mastering Python for Networking and Security

Implementing the UDP Server

The main difference with TCP is that UDP does not control the errors of the packets that are sent. The only difference between a TCP socket and a UDP socket that must specify SOCK_DGRAM instead of SOCK_STREAM when creating the socket object. Use the following code to create the UDP server:

You can find the following code in the udp_server.py file inside the udp_client_server folder:

import socket,sysbuffer=4096host = "127.0.0.1"port = 6789socket_server=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)socket_server.bind((host,port))while True:    data,addr = socket_server.recvfrom(buffer)    data = data.strip()    print "received from: ",addr    print "message: ", data    try:        response = "Hi %s" % sys.platform except Exception,e: ...