py6.7

server:

import socketserver
import json

class MyServer(socketserver.BaseRequestHandler):
    def handle(self):
        str_dic = self.request.recv(1024).decode('utf-8')
        dic = json.loads(str_dic)
        with open('user_info',encoding='utf-8') as f:
            for line in f:
                name,psw = line.strip().split('|')
                if name == dic['username'] and psw == dic['password_md5']:
                    print('登陆成功')
                    return
            print('用户名或密码错误')

ser = socketserver.ThreadingTCPServer(('127.0.0.1',8090),MyServer)

ser.serve_forever()

client:

import socket
import json
import hashlib

sk =  socket.socket()

sk.connect((('127.0.0.1',8090)))

username = input('请输入用户名').strip()
password = input('请输入密码').strip()
obj = hashlib.md5()
obj.update(password.encode('utf-8'))
password_md5 = obj.hexdigest()

dic = {'username':username,'password_md5':password_md5}
str_dic = json.dumps(dic)

sk.send(str_dic.encode('utf-8'))

sk.close()

server:

import socketserver
class MyServer(socketserver.BaseRequestHandler):
    def handle(self):
        self.request.send(b'hello')
        print(self.request.recv(1024))

#协议及地址，类名
ser = socketserver.ThreadingTCPServer(('127.0.0.1',8081),MyServer)
#启动服务
ser.serve_forever()#永远的开启服务。

client:

import socket

sk = socket.socket()

sk.connect(('127.0.0.1',8081))

print(sk.recv(1024))
sk.send(b'hello')

sk.close()

server:
import socket
import hashlib
import os

def create_sock():
    sk = socket.socket()
    sk.bind(('127.0.0.1',8080))
    sk.listen(5)
    conn , addr = sk.accept()
    return conn,sk

def com(conn):
    while 1:
        msg_r = conn.recv(1024).decode('utf-8')
        print(msg_r)
        msg_s = input('>>>')
        conn.send(msg_s.encode('utf-8'))

def md5_confir(conn):
    salt = b'fuck'
    md5_bytes = os.urandom(10)
    obj = hashlib.md5(salt)
    obj.update(md5_bytes)
    r = obj.hexdigest()
    conn.send(md5_bytes)
    r_hex = conn.recv(1024).decode('utf-8')
    if r == r_hex:
        com(conn)
    else:
        print('非法客户端')

conn , sk = create_sock()
md5_confir(conn)

conn.close()
sk.close()

client:

import socket
import hashlib

def create_sk():
    sk = socket.socket()
    sk.connect(('127.0.0.1',8080))
    return sk

def com(sk):
    while 1:
        msg_s = input('>>>')
        sk.send(msg_s.encode('utf-8'))
        msg_r = sk.recv(1024).decode('utf-8')
        print(msg_r)

def md5_conf(sk):
    salt = b'fuck'
    md5_bytes = sk.recv(1024)
    obj = hashlib.md5(salt)
    obj.update(md5_bytes)
    r_hex = obj.hexdigest()
    sk.send(r_hex.encode('utf-8'))


sk = create_sk()
md5_conf(sk)
com(sk)
sk.close()

# socket中的一些常见方法
# import socket
#
# sk = socket.socket()
#
# sk.bind(('127.0.0.1',8090))
#
# sk.setblocking(False)#默认为真，设置为假当accept时不阻塞。如果没有客户端连接则报错。
# sk.settimeout(2) #设置隔几秒后还没有客户端连接时报错。
#
# sk.listen(5)
# conn , addr = sk.accept()
#
# print(conn.getsockname()) #得到服务器的ip+port
# print(conn.getpeername()) #得到客户端的ip+port
#
#
# conn.close()
# sk.close()
#验证是否为合法的客户端。
#socketserver