python socket实例

想在一问一答基础上加上client端向server端发 shell命令 返回命令结果

server端

import socket
import subprocess
sk=socket.socket()
# print(sk)
sk.bind(('127.0.0.1',8000))
sk.listen(3)

while True:
    conn, addr = sk.accept()
    while True:
        try:
            data = conn.recv(1024)
            a=subprocess.Popen(str(data,'utf8'),shell=True,stdout=subprocess.PIPE) #data.decode('utf8)
            # data=str(a.stdout.read(), 'gbk')
            # print(a.stdout.read())
            data_send=a.stdout.read()       #二进制的数据
            data_send_len=bytes(str(len(data_send)),'utf8')     #在这应该算二进制的长度 注意！
            #发送数据长度
            conn.send(data_send_len)
            print(data_send_len)
            conn.send(data_send)
        except Exception :
            break
        if not data:
            break

        # inp=input('>>>>>>')
        # conn.send(bytes(inp,'utf8'))
    conn.close()
sk.close()



client端

import socket
sk=socket.socket()
sk.connect(('127.0.0.1',8000))
while True:
    inp=input('>>>>>>>')
    if inp=='q':
        print('我退了')
        break
    sk.send(bytes(inp,'utf8'))
    data_len=sk.recv(1024)          #二进制
    print(int(str(data_len,'utf8')))
    data=b''
    while len(data) !=int(str(data_len,'utf8')):
        recv_current=sk.recv(1024)
        data+=recv_current
        # print(str(data, 'gbk'))
    print(str(data,'gbk'))
    # print(data)
sk.close()
# print(sk)