# The_author = 'liu66'

 # By python3.x

 # -*- coding = utf-8 -*-

 import socket,os

 server=socket.socket()

 server.bind(("localhost",66))#绑定要监听的端口

 server.listen(5)#开始监听

 # 等电话打进来

 while True:

     print("我要开始等电话了")

     conn,addr=server.accept()#conn为连接的实例

     print("实例的连接和地址分别为:",conn,addr)

     while True:

         print("等待数据接收...")

         data=conn.recv(1024)

         if not data:

             print("client has closed...")

             break

         # print(data)

         # print(data.decode())

         # conn.send(data.upper())

         # 执行cmd命令

         try:

             res = os.popen(data.decode()).read()

         except TypeError:

             print("请输入正确的CMD")

         else:

             print("------------------")

             print(res)#打印返回的值

             print("------------------")

             '''一定要判断返回的长度'''

             print(len(res))

             received_size=''

             if len(res) == 0:

                 res = "cmd is not correct..."

             print(res)

             conn.send(str(len(res.encode("utf-8"))).encode())

             sleep_recv = conn.recv(1024)

             print("缓冲...", sleep_recv.decode())  # 两条send命令可能会出现粘包的情况

             conn.send(res.encode("utf-8"))

 print("server is closed...")

 server.close()

 # The_author = 'liu66'

 # By python3.x

 # -*- coding = utf-8 -*-

 import socket

 client=socket.socket()

 client.connect(("localhost",66))

 while True:

     send_data=input(">>:").strip()

     if len(send_data) == 0: continue

     client.send(send_data.encode("utf-8"))

     # data=client.recv(1024)

     # print("server接收到的数据:",data.decode())

     ############   数据初始化 ####################

     data_size=0#要接受的数据大小

     data_res=b''#要接受的数据的内容大小

     received_size=0

     received_data=b''#要接受的数据的内容

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

     '''先接收要接受的数据大小'''

     data_size=client.recv(1024)

     print("要接受的数据大小:", data_size)

     '''发送缓冲数据'''

     client.send("...".encode())

     while received_size != int(data_size):

         data_res=client.recv(1024)

         received_size+=len(data_res)

         received_data+=data_res

     else:

         print("已接收数据大小:",received_size)

         print(received_data.decode("utf-8","ignore"))

         '''decode()默认的参数就是strict，代表遇到非法字符时抛出异常；

            如果设置为ignore，则会忽略非法字符；

            如果设置为replace，则会用?号取代非法字符；

            如果设置为xmlcharrefreplace，则使用XML的字符引用。'''

     # print(data_res.decode("utf-8","replace"))

 print("client is closed...")

 client.close()