复习

复习用tcp协议进行远程运行终端。

服务端代码：

from socket import *
import struct
import subprocess
tcp_server = socket(AF_INET,SOCK_STREAM)
tcp_server.setsockopt(SOL_SOCKET,SO_REUSEADDR,1)
tcp_server.bind(('127.0.0.1',8080))
tcp_server.listen(124)
while True:
    coon,addr = tcp_server.accept()
    while True:
        cmd = coon.recv(1024)
        cmd_res = subprocess.Popen(cmd.decode(),shell=True,stdout=subprocess.PIPE,stderr=subprocess.PIPE,stdin=subprocess.PIPE)
        err = cmd_res.stderr.read()
        if err:
            send_res = err
        else:
            send_res = cmd_res.stdout.read()
        length = len(send_res)
        coon.send(struct.pack('i',length))
        coon.send(send_res)
        # ready = coon.recv(1024)
        # if ready == b'ready':
        #     coon.send(send_res)

客户端：

from socket import *
import struct

tcp_client = socket(AF_INET, SOCK_STREAM)
tcp_client.connect(('127.0.0.1', 8080))
while True:
    cmd = input('请输入指令：')
    tcp_client.send(cmd.encode())
    length = tcp_client.recv(4)
    length = struct.unpack('i', length)[0]
    recv_length = 0
    data = b''
    while recv_length < length:
        data += tcp_client.recv(100)
        recv_length = len(data)
    print(data.decode('gbk'))