# -*- coding: UTF-8 -*-
#单个通信，后面排队
import socket
server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)#参数是默认的可以不写
server.bind(("localhost",6969))#绑定需要监听的端口
server.listen(5) #监听
while True:
    conn, addr = server.accept()  # waiting 等待
    print(conn, addr)
    while True:
        data = conn.recv(1024)
        if not data:
            print("client hao lost.......")
            break
        print("recv:",data.decode())
        conn.send(data.upper())#sendall循环send
        #res = os.popen(data).read() #执行命令
        #conn.send(res)              #发送命令结果

server.close()