87-python-解决黏包( struct 模块 )

输入 dos 命令即可执行代码中的input

server

import struct
import socket
sk = socket.socket()
sk.bind(('127.0.0.1',8080))
sk.listen()

conn,addr = sk.accept()

while True:
    cmd = input('>>>')
    if cmd == 'q':
        break
    conn.send(cmd.encode('gbk'))
    # num = conn.recv(1024).decode('gbk')
    # conn.send(b'ok')
    # ret = conn.recv(int(num)).decode('gbk')
    num = conn.recv(4)
    num = struct.unpack('i',num)[0]
    res = conn.recv(int(num)).decode('gbk')
    print(res)

conn.close()
sk.close()

 

 

client

 

import struct
import socket
import subprocess

sk = socket.socket()
sk.connect(('127.0.0.1',8080))

while True:
    cmd = sk.recv(1024).decode('gbk')
    if cmd == 'q':
        break
    ret = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    stdout_r = ret.stdout.read()
    stderr_r = ret.stderr.read()

    # sk.send(str(len(stdout_r) + len(stderr_r)).encode('gbk'))
    len_num = len(stdout_r) + len(stderr_r)
    num_by = struct.pack('i',len_num)
    sk.send(num_by)
    sk.send(stdout_r)
    sk.send(stderr_r)

sk.close()