# -*- coding: utf-8 -*-

###########################################

import socket

import threading

import time

def tcplink(sock, addr):

print('Accept new connection from %s:%s' % addr)

sock.send(b'welcome. input "exit" to exit')

while True:

data = sock.recv(1024)

time.sleep(1)

if not data or data.decode('utf-8') == 'exit':

break

sock.send(('Hello, %s' % data.decode('utf-8')).encode('utf-8'))

sock.close()

print('Connection from %s:%s closed.' % addr)

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

port = 9999

s.bind(('127.0.0.1', port))

s.listen(5) # 5 is backlog

print('waiting for connection: 127.0.0.1:%d' % port)

while True:

sock, addr = s.accept()

t = threading.Thread(target=tcplink, args=(sock, addr))

t.start()