客户端验证、tcp协议中多个客户端的同时在线

import os
import hmac
import socket
def auth(conn):msg &＃61; os.urandom(32)conn.send(msg)result &＃61; hmac.new(secret_key, msg)client_digest &＃61; conn.recv(1024)if result.hexdigest() &＃61;&＃61; client_digest.decode(&＃39;utf-8&＃39;):print(&＃39;是合法的链接&＃39;)return Trueelse:print(&＃39;不合法的链接&＃39;)return False
secret_key &＃61; b&＃39;alex_sb&＃39;
sk &＃61; socket.socket()
sk.bind((&＃39;127.0.0.1&＃39;,9000))
sk.listen()
conn,addr &＃61; sk.accept()if auth(conn):print(conn.recv(1024))# 正常的和client端进行沟通了
conn.close()
else:conn.close()
sk.close()

import hmac
import socket
def auth(sk):msg &＃61; sk.recv(32)result &＃61; hmac.new(secret_key,msg)res &＃61; result.hexdigest()sk.send(res.encode(&＃39;utf-8&＃39;))secret_key &＃61; b&＃39;alex_sb&＃39;
sk &＃61; socket.socket()
sk.connect((&＃39;127.0.0.1&＃39;,9000))
auth(sk)
sk.send(b&＃39;upload&＃39;)
# 进行其他正常的和server端的沟通
sk.close()

import socketserver # tcp协议端的server端就不需要导入socket
class Myserver(socketserver.BaseRequestHandler):def handle(self):conn &＃61; self.requestwhile True:conn.send(b&＃39;hello&＃39;)print(conn.recv(1024))
server &＃61; socketserver.ThreadingTCPServer((&＃39;127.0.0.1&＃39;,9000),Myserver)
server.serve_forever()

import socket
sk &＃61; socket.socket()
sk.connect((&＃39;127.0.0.1&＃39;,9000))
while True:sk.send(b&＃39;hello&＃39;)msg &＃61; sk.recv(1024)print(msg)
sk.close()