基于TCP协议的远程终端控制并发socketserver实现以及粘包问题处理

# 客户端

# -*- coding: utf-8 -*-

import socketserver
import struct
import json
import subprocess


class MyTcpHandler(socketserver.BaseRequestHandler):
    def handle(self):
        while True:
            try:
                cmd = self.request.recv(1024)
                if not cmd: break
                print(cmd.decode('utf-8'))
                obj = subprocess.Popen(cmd.decode('utf-8'),
                                       shell=True,
                                       stdout=subprocess.PIPE,
                                       stderr=subprocess.PIPE
                                       )
                stdout = obj.stdout.read()
                stderr = obj.stderr.read()
                # 制作报头
                header_dic = {
                    'file_name': cmd.decode('utf-8'),
                    'data_size': len(stdout) + len(stderr)
                }
                header_json = json.dumps(header_dic)
                header_bytes = header_json.encode('utf-8')
                # 发送报头字典长度
                self.request.send(struct.pack('i', len(header_bytes)))
                # 发送报头
                self.request.send(header_bytes)
                # 发送正文
                self.request.send(stdout + stderr)
            except ConnectionResetError:
                break


if __name__ == '__main__':
    server = socketserver.ThreadingTCPServer(('127.0.0.1', 8080), MyTcpHandler)
    server.serve_forever()

　　

# 服务端

# -*- coding: utf-8 -*-

from socket import *
import struct
import json

client = socket(AF_INET, SOCK_STREAM)
client.connect(('127.0.0.1', 8080))

while True:
    cmd = input('>>>:').strip()
    if not cmd:
        continue
    client.send(cmd.encode('utf-8'))
    # 先接收报头长度并解析
    dic_size = client.recv(4)
    header_size = struct.unpack('i', dic_size)[0]
    # 获取报头字典
    header_json = client.recv(header_size).decode('utf-8')
    header_dic = json.loads(header_json)
    file_size = header_dic['data_size']
    get_size = 0
    info = b''
    while get_size < file_size:
        data = client.recv(1024)
        get_size += len(data)
        info += data
    print(info.decode('gbk'))