socket_ftp（ftp有点残）

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#  import socket,os,json
# import sys
# BASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#获取相对路径转为绝对路径赋于变量
# sys.path.append(BASE_DIR)#增加环境变量
#
# from  core.server_class import listen_func
# s=socket.socket()#定义
# s.bind(('localhost',9000))#绑定要监听的 端口
# s.listen(5)#对列5
# print('正在监听中')
# listen_func(s)

import socket,struct,json,subprocess

phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
phone.bind(('127.0.0.1',8090))
phone.listen(10)

while True:
    print('starting listen 127.0.0.1:8090')
    conn,addr=phone.accept()
    print(addr)
    while True:
        print('begin receiving message')
        cmd=conn.recv(1024)
        if not cmd:break
        print('cmd: %s' %cmd)
        res=subprocess.Popen(cmd.decode('utf-8'),
                             shell=True,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        #错误信息
        err=res.stderr.read()
        #打印错误信息
        print(err)
        if err:
            back_msg=err
        else:
            back_msg=res.stdout.read()
        ##先发back_msg的长度
        conn.send(struct.pack('i',len(back_msg)))
        ##在发真实的内容
        conn.sendall(back_msg)
    conn.close()



client
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import socket,time,struct
ftp_c=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
res=ftp_c.connect_ex(('127.0.0.1',8090))

while True:
    msg=input('>>>:').strip()
    if len(msg) == 0:continue
    if msg == 'quit'or msg == 'exit':break
    ftp_c.send(msg.encode('utf-8'))

    l=ftp_c.recv(4)
    x=struct.unpack('i',l)[0]
    print(type(x),x)
    r_s=0
    data=b''
    while r_s < x:
        r_d=ftp_c.recv(1024)
        data+=r_d
        r_s+=len(r_d)
    print(data.decode('gbk'))