基于 UDP 协议的SSH 客户端程序

import socket, subprocess
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
HOST = '127.0.0.1'
PORT = 5555
server.bind((HOST, PORT))
server.listen(5)
while True:
    conn, client_addr = server.accept()
    print('已连接')

    while True:
        try:
            cmd = conn.recv(1024)
            if not cmd: break
            print('客户机命令', cmd.decode('utf-8'))
            res = subprocess.Popen(cmd.decode('utf-8'), shell=True,
                                   stdout=subprocess.PIPE,
                                   stderr=subprocess.PIPE)
            stdout = res.stdout.read()
            stderr = res.stderr.read()
            conn.send(stdout)
        except ImportError:
            break
conn.close()

from socket import socket,AF_INET,SOCK_DGRAM

port = ('127.0.0.1', 5555)
udp_c = socket(AF_INET, SOCK_DGRAM)
while True:
    msg = input('>>').strip()
    if not msg:continue
    udp_c.sendto(msg.encode('utf-8'), port)
    bak_msg, addr = udp_c.recvfrom(10240)
    print(bak_msg.decode('GBK'))
bak_msg.close()