# -*- coding: utf-8 -*-
"""
Created on Mon Apr  8 16:28:16 2019

@author: ShenR
"""

import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('127.0.0.1',9876))
s.listen(5)
print('Waiting for connection...')

while True:
    #接受一个新连接：
    sock, addr = s.accept()
    #创建新线程来处理TCP连接：
    t = threading.Thread(target=tclink, args=(sock, addr))
    t.start()
    
def tcplink(sock, addr):
    print('Accept new connection from %s:%s...' % addr)
    sock.send(b'Welcome!')
    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)