python模块——socket (实现简单的C/S架构端通信操作CMD）

# 服务端代码
#!/usr/bin/env python
# -*- coding:utf-8 -*-
__author__ = "loki"
import socket
import subprocess
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
ip_port = ('127.0.0.1', 8011)
server.bind(ip_port)
server.listen(5)

# 链接循环
while 1:
    print('Waiting...')
    conn, addr = server.accept()
    print('-->conn: ', conn)
    print('-->addr: ', addr)
    print('Got it...')

    while 1:
        try:
            cmd = conn.recv(1024)
            res = subprocess.Popen(cmd.decode('utf-8'),
                                   shell=True,
                                   stdout=subprocess.PIPE,
                                   stderr=subprocess.PIPE)
            conn.send(res.stdout.read())
            conn.send(res.stderr.read())
        except Exception:
            break
    conn.close()
# server.close()

客户端
#!/usr/bin/env python
# -*- coding:utf-8 -*-
__author__ = "loki"
import socket

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ip_port = ('127.0.0.1', 8011)
client.connect(ip_port)
# 通信循环
while 1:
    # 发消息
    cmd = input('>>: ').strip()
    if not cmd:
        continue
    client.send(bytes(cmd, encoding='utf-8'))
    # 收消息
    data = client.recv(8196)
    print(data.decode('gbk'))
# client.close()

以上代码是基于TCP 流的方式进行C/S控制，注意编码Linux适用于utf-8，Windows适用于gbk

已知BUG：

1.在接受的信息大于8196（或者你自己定义的值的时候）可能会出现粘包问题

2.执行可执行程序或者需要交互的cmd命令，client会宕住，需要重新开客户端

3.如果是作为纯py脚本使用还需要进行sys.platform的系统判断，如果是win采用编码gbk,linux采用编码utf-8

4.以上代码仅供学习参考使用

# 解决粘包问题的TCP版本 —— server

#!/usr/bin/env python
# -*- coding:utf-8 -*-
__author__ = "loki"
import socket
import subprocess
import struct
user_input = input('Please input server_ip: ').strip()

ip_port = ('%s' % user_input, 9991)
buff_size = 1024

stick_pack_server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
stick_pack_server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

stick_pack_server.bind(ip_port)
stick_pack_server.listen(5)

while 1:
    print('Waiting...')
    msg, address = stick_pack_server.accept()
    print("msg-->: ", msg)
    print("addr-->: ", address)
    while 1:
        try:
            cmd = msg.recv(buff_size)
            if not msg:
                break
            res = subprocess.Popen(cmd.decode("utf-8"), shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                                   stdin=subprocess.PIPE)
            stderr = res.stderr.read()
            stdout = res.stdout.read()

            data_size = len(stderr) + len(stdout)

            # send header
            msg.send(struct.pack("i", data_size))

            # send real data
            msg.send(stderr)
            msg.send(stdout)
        except Exception as e:
            print('---->', e)
            break
    msg.close()
# phone.close()

# 解决粘包问题的TCP版本 —— client

#!/usr/bin/env python
# -*- coding:utf-8 -*-
__author__ = "loki"
import socket
import struct

user_input = input("Please input client_ip: ").strip()

ip_port = ('%s' % user_input, 9991)
buff_size = 1024

stick_pack_client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
stick_pack_client.connect(ip_port)

while 1:
    # send message
    cmd = input('>>: ').strip()
    if not cmd:
        continue
    stick_pack_client.send(cmd.encode("utf-8"))

    # receive header
    baotou = stick_pack_client.recv(4)
    data_size = struct.unpack("i", baotou)[0]

    # receive data
    receive_size = 0
    receive_data = b''
    while receive_size < data_size:
        data = stick_pack_client.recv(1024)
        receive_size += len(data)
        receive_data += data

    print(receive_data.decode("gbk"))

# stick_pack_client.close()

Wrap-up

1.注意tcp客户端需要使用 xx.connect()

2.注意tcp服务端发送消息是使用的accept，以及发送消息使用的是conn