Day31 python基礎--網絡編程基礎-socketserver

一，驗證客戶端合法性

#server端
import os
import hmac
import socket
secret_key = b'alex_sb'def auth(conn):msg = os.urandom(32) #生成一個隨機的字符串conn.send(msg)   #發送到client端result = hmac.new(secret_key,msg)  #處理這個隨機字符串，得到一個結果client_digest = conn.recv(1024)   #接收client端處理的結果if result.hexdigest() == client_digest.decode('utf-8'):print('是合法的連接')   #對比成功可以繼續通信return Trueelse:print('不合法的連接')   #成功closereturn Falsesk = socket.socket()
sk.bind(('127.0.0.1',9000))
sk.listen()
conn,addr = sk.accept()
if auth(conn):print(conn.recv(1024))#正常的和client端進行溝通了
    conn.close()
else:conn.close()
sk.close()

#client端
import hmac
import socket
key = b'alex_sb'
def auth(sk):msg = sk.recv(32)result = hmac.new(key,msg)res = result.hexdigest()sk.send(res.encode('utf-8'))sk = socket.socket()
sk.connect(('127.0.0.1',9000))
auth(sk)
sk.send(b'upload')
# 進行其他正常的和server端的溝通
sk.close()

?

二，socketserver

import socketserver
#tcp協議的server端就不需要導入socket
# socketserver:進一步封裝
#        ↓
# socket 底層模塊class Myserver(socketserver.BaseRequestHandler):def handle(self):conn = self.requestwhile True:conn.send(b'hello')print(conn.recv(1024))server = socketserver.ThreadingTCPServer(('127.0.0.1',9000),Myserver)
server.serve_forever()

#server端
import socket
sk = socket.socket()
sk.bind(('127.0.0.1',9000))
sk.listen()
while True:conn,addr = sk.accept()while True:conn.send(b'hello')print(conn.recv(1024))#client端
import socket
sk = socket.socket()
sk.connect(('127.0.0.1',9000))
while True:ret = sk.recv(1024)print(ret)sk.send(b'byebye')
sk.close()

?

三，blocking阻塞

# blocking 阻塞
import socket
sk = socket.socket()
sk.bind(('127.0.0.1',9000))
sk.setblocking(False)
sk.listen()
while 1:try:conn,addr = sk.accept() #如果沒有人來連接我，我就不在這里等待，非阻塞print(sk)breakexcept BlockingIOError:pass
conn.recv(1024)

?