通信循环

远程操控:客户端输入一个命令ipconfig 通过网络传输  传输给服务器,服务器后端运行此命令得到一个结果

将结果再通过网络传输返回给客户

import  subprocess
obj=subprocess.Popen('dir',
                     shell=True,
                     stdout=subprocess.PIPE,
                     stderr=subprocess.PIPE,
                     )
print(obj.stdout.read().decode('gbk'))
print(obj.stderr.read().decode('gbk'))

shell:命令解释器,相当于调用cmd执行指定的命令
stdout:正确结果丢到管道中
stderr:错的丢到另一个管道中
windows操作系统的默认编码是gbk编码


远程操控命令:
服务端:

import socket
import subprocess
server=socket.socket()
server.bind(('127.0.0.1',3333))
server.listen(5)
while 1:
    conn,addr=server.accept()
    while 1:
        try:
            cmd=conn.recv(1024).decode('utf-8')
            obj=subprocess.Popen(
                cmd,
                shell=True,
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE
            )
            right_msg=obj.stdout.read()
            error_msg=obj.stderr.read()
            print(right_msg,error_msg)
            conn.send(right_msg+error_msg)
        except Exception:
            break
    conn.close()
server.close()

客户端:

import socket
client=socket.socket()
client.connect(('127.0.0.1',3333))
while 1:
    cmd=input('>>>').strip()
    client.send(cmd.encode('utf-8'))
    from_server_cmd=client.recv(1024)
    print(from_server_cmd.decode('gbk'))
client.close()