Chat application

 Server Side

import socket

UDP_IP = "127.0.0.1"

UDP_PORT = 5018

sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)

sock.bind((UDP_IP, UDP_PORT))

print("IP address:",UDP_IP)

print("port no.:",UDP_PORT)

print("press Q to exit ")

try:

while True:

data, addr = sock.recvfrom(1024)

print(data.decode())

if data in [b"Q",b"q"]:

sock.sendto(b"q",(UDP_IP, addr[1]))

break;

message=input("enter message to be sent ").encode()

if message in [b"Q",b"q"]:

sock.sendto(message,(UDP_IP, addr[1]))

break;

sock.sendto(message,(UDP_IP, addr[1]))

except Exception as e:

print(e)

Client Side

import socket

UDP_IP = "127.0.0.1"

UDP_PORT = 5018

print("IP address",UDP_IP)

print("Port number ",UDP_PORT)

sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)

try:

while True:

message=input("enter message to be sent ").encode()

if message in [b"Q",b"q"]:

break;

sock.sendto(message,(UDP_IP, UDP_PORT))

data, addr = sock.recvfrom(1024)

if data in [b"Q",b"q"]:

break;

print(data.decode())

except Exception as e:

print(e)