python利用socketserver实现并发套接字功能

#!/usr/bin/env python# -*- coding: gbk -*-# @Version : Python 3.5.2# @Time : 2018/1/24 10:29# @Author : Ncp# @File : server.py# @Software: PyCharmimport jsonimport timeimport hashlibimport structimport osfrom socketserver import *FILE_PATH = os.path.dirname(os.path.abspath(__file__))+'//server_file'class MYserver(BaseRequestHandler): # 设置一个类，基础BaseRequestHandler这个类 def handle(self):     # 这个方法下添加通信功能（和上面创建类一样，这是socketserver的固定模式）  print(self.client_address)  '''  :functions: 使用socketserver的并发套接字，提供客户端下载文件，并对文件进行MD5加密  '''  while True:   try:    data = self.request.recv(1024)    data_recv = data.decode('gbk').split()    if not os.path.exists(FILE_PATH+r'/%s' %data_recv[1]):     self.request.send('file is not found'.encode('gbk'))     continue    else:     data = self.request.send('1'.encode('gbk')) # 这里发现小问题，不回复一个信息的话，发送给客户端的包头居然成了没有封装     FILE_SIZE = os.path.getsize(FILE_PATH+r'/%s' %data_recv[1])     with open(FILE_PATH+r'/%s' %data_recv[1],'rb')as f:      hash_file = f.read()     m = hashlib.md5()     m.update(hash_file)     m_hex = m.hexdigest()     file_header = {'filename':data_recv[1],         'filesize':FILE_SIZE,         'md5':m_hex,         'time':time.strftime('%Y-%m-%d-%X',time.localtime())         }     # 包头信息序列化     file_header_dump = json.dumps(file_header)     # 编译成2进制     file_header_bytes = file_header_dump.encode('gbk')     # 封装报头     file_header_struct = struct.pack('i',len(file_header_bytes))     # 发送报头     self.request.send(file_header_struct)     # 发送报文内容     self.request.send(file_header_bytes)     # 发送文件数据     send_size = 0     with open(FILE_PATH+r'/%s' %data_recv[1] , 'rb')as f:      for i in f:       self.request.send(i)       send_size += len(i) # 这里后续可以拓展一个进度或者网速显示功能   except Exception:    self.request.close()if __name__ == '__main__': server = ThreadingTCPServer(('127.0.0.1',8080),MYserver) # windows下只能开启多线程 server.serve_forever()

#!/usr/bin/env python# -*- coding: gbk -*-# @Version : Python 3.5.2# @Time : 2018/1/24 10:29# @Author : Ncp# @File : client.py# @Software: PyCharmfrom socket import *import os,sysimport hashlibimport structimport mathimport jsonFILE_PATH = os.path.dirname(os.path.abspath(__file__))+'//client_file'# 显示下载进度条功能，可以拓展为显示下载速度（提示，因为每次传输4096个字节，那么下载网速为KB/S,1KB个字节=1024B（字节），那么1s传输了多少个字节呢？）def progress(recvd, total): fraction = '{:.0%}'.format(recvd / total) sys.stdout.write('/r[%-30s] %s' % ('#' * int(math.floor(recvd * 30 / total)), fraction)) sys.stdout.flush() if recvd == total:  sys.stdout.write('/n')# 主函数def run(ip,addr): client = socket(AF_INET,SOCK_STREAM) client.connect((ip,addr)) while True:  user_input = input('>>').strip()  cmd = user_input.split()  if len(cmd) != 2:   print('input format is error please use:get xx')   continue  if cmd[0] == 'get':   client.send(user_input.encode('gbk'))   data = client.recv(1024)   data_recv = data.decode('gbk')   if data_recv == 'file is not found':    print(data_recv)    continue  else:   print('commands is not found')   continue  # 收包头，然后一系列处理  header = client.recv(4)  if not header:break  header_json_len = struct.unpack('i', header)[0]  header_json_bytes = client.recv(header_json_len)  header_josn = header_json_bytes.decode('gbk')  header_dic = json.loads(header_josn)  # 去除包头内容进行下载  print(header_dic)  data_len = header_dic['filesize']  data_file = header_dic['filename']  data_md5 = header_dic['md5']  recv_size = 0  with open(FILE_PATH+r'/%s' %data_file,'wb')as fw:   while recv_size < data_len:    recv_data = client.recv(4096)    recv_size += len(recv_data)    fw.write(recv_data)    progress(recv_size,data_len)   print('Download completion, start validation')  # 收到文件后，读取文件进行加密，看是否与服务端下载的文件一致！  with open(FILE_PATH+r'/%s' %data_file,'rb')as fr:   data_total = fr.read()  m = hashlib.md5()  m.update(data_total)  m_hex = m.hexdigest()  if m_hex == data_md5:   print('文件验证通过')  else:   print('文件损坏,删除文件')   os.remove(FILE_PATH+r'/%s' %data_file)if __name__ == '__main__': run('127.0.0.1',8080)