SocketServer模块，hmac模块验证client合法性

hmac模块：

1.模块初识：

import hmac
# h = hmac.new() #括号里要给它连个bytes类型，一个是自定义的secret_key，一个是你想进行加密的bytes
# 密文 = h.digest()
# hmac.compare_digest() #括号内传另外一个密文，看是否相等

h = hmac.new(b'secret',b'382835896')
digest = h.digest()
print(digest)
#>>>>  b'\xa4<\r\xf8\xec0\x7f\x8ao\xec\xa7(\xf7[t\xfb'

h = hmac.new(b'secret',b'382835896')
digest2 = h.digest()
print(hmac.compare_digest(digest,digest2)) #返回true

hmac模块初识

2.使用hmac模块，验证client端的合法性

import os
import hmac
import socket
secret_key = b'wwl'
sk = socket.socket()
sk.bind(('127.0.0.1',8080))
sk.listen()
def check_client(conn):msg = os.urandom(32)conn.send(msg)h = hmac.new(secret_key,msg)digest = h.digest()client_digest = conn.recv(1024)return hmac.compare_digest(digest,client_digest)conn,addr = sk.accept()
res = check_client(conn)
if res:print('合法的客户端')conn.close()
else:print('不合法的客户端')conn.close()
sk.close()

server端-hmac

import socket
import hmacsecret_key = b'wwl111'
sk = socket.socket()
sk.connect(('127.0.0.1',8080))msg = sk.recv(1024)
h = hmac.new(secret_key,msg)
client_digest = h.digest()
sk.send(client_digest)
sk.close()

client端-hamc

socketserver模块：

解读socketserver源码 —— http://www.cnblogs.com/Eva-J/p/5081851.html

socketserver模块可以开启server端的多线程，让多个client端访问server端：

import socketserver
class MyServer(socketserver.BaseRequestHandler):def handle(self):#原来socket写的程序里所有和conn有关的操作，都挪到handle方法里#self.request#相当于conn  #一旦客户端断开连接了，handle方法也应该结束while True:msg = self.request.recv(1024).decode('utf-8')if msg == 'q':breakprint(msg)info = input('%s>>>> '%msg[:2])self.request.send(info.encode('utf-8'))if __name__ == '__main__':server = socketserver.ThreadingTCPServer(('127.0.0.1',8080),MyServer)server.serve_forever()

server端-socketserver

import socket
sk = socket.socket()
sk.connect(('127.0.0.1',8080))
while True:msg = input('>>>> ')if msg == 'q':breaksk.send(msg.encode('utf-8'))ret = sk.recv(1024).decode('utf-8')print(ret)
sk.close()