Socket-based communication protocol udp

No sticking problem packet protocol udp 
no connection 
datagram: each data a header carrying

import socket

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

while True:
    msg=input('>>: ').strip()
    client.sendto(msg.encode('utf-8'),('127.0.0.1',8082))
    data,server_addr=client.recvfrom(1024)
    print(data)

Client

import socket

server=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
server.bind(('127.0.0.1',8082))

while True:
    data,client_addr=server.recvfrom(1024)
    print(data)
    server.sendto(data.upper(),client_addr)

server.close()

Server