#!/usr/bin/env python
# -*- coding: utf-8 -*-
import socket
ip = 'localhost'
port = 9090
sock = socket.socket()
sock.bind((ip, port))
sock.listen(1)
while True:
conn, addr = sock.accept()
print('connected:', addr)
while True:
data = conn.recv(1024)
if not data:
break
conn.send(data.decode().upper().encode())
conn.close()