实现简单的ssh功能

客户端代码：

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

__Author__ = "Dennis"

import socket

client = socket.socket()

client.connect(("localhost",6969))

while True:
    msg = input(">> ")
    if not msg:continue
    client.send(msg.encode())
    data_size = client.recv(1024)
    print("Will Size:",data_size)
    true_size = int(data_size.decode())
    client.send(b"recieve")
    receive_size = 0
    while receive_size < true_size:
        data = client.recv(1024)
        receive_size += len(data)
        print(data.decode())
        print("Size:",receive_size)

client.close()

服务端代码

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

__Author__ = 'Dennis'

import socket,os

server = socket.socket()
server.bind(("localhost",6969))
server.listen(5)

print("等电话...")
conn,addr = server.accept()
print("电话来啦。。")
while True:
    data  = conn.recv(1024)
    if not data:
        print("client has lost")
        break
    print("Command: ",data)
    res_msg = os.popen(data.decode()).read()
    res_msg_b = res_msg.encode()
    res_size = len(res_msg_b)
    conn.send(str(res_size).encode())
    is_true = conn.recv(1024)
    conn.send(res_msg_b)
server.close()