【小沐学python】socket网络通信（二）

【小沐学python】开发环境（一）
【小沐学python】socket网络通信（二）

1、简介

Python 提供了两个级别访问的网络服务：

• 低级别的网络服务支持基本的 Socket，它提供了标准的 BSD Sockets API，可以访问底层操作系统 Socket 接口的全部方法。
• 高级别的网络服务模块 SocketServer， 它提供了服务器中心类，可以简化网络服务器的开发。

2、TCP方式

2.1 服务端

#!/usr/bin/python
# -*- coding: UTF-8 -*-
# filename：test_tcp_server.py
# creator: tomcat
# date: 2021-11-16

from socket import *
from time import ctime
from datetime import datetime

HOST = ''
PORT = 27015
BUFSIZ = 1024
ADDR = (HOST, PORT)

s = socket(AF_INET, SOCK_STREAM)
s.bind(ADDR)
s.listen(5)

while True:
    print('waiting for clients ...')
    c, addr = s.accept()
    t = datetime.now ().strftime ('%H:%M:%S')
    print('   connnecting from: [', t, "]", addr)

    while True:
        data = c.recv(BUFSIZ)
        if not data:
            break
        print("recv: ", data )
        c.send(('[%s] %s' % (ctime(), "A message from python server.")).encode())
    c.close()
    s.close()

运行结果如下：

测试对应的客户端（C++），运行结果如下：

2.2 客户端

#!/usr/bin/python
# -*- coding: UTF-8 -*-
# filename：test_tcp_client.py
# creator: tomcat
# date: 2021-11-16

from socket import *
from time import ctime
from datetime import datetime

BUFSIZ = 1024
ADDR = ('127.0.0.1', 27015) # or 'localhost'

c = socket(AF_INET, SOCK_STREAM)
c.connect(ADDR)
while True:
    data = input('Input: ')
    if not data:
        break
    c.send(data.encode())
    data = c.recv(BUFSIZ)
    if not data:
        break

    t = datetime.now().strftime('%H:%M:%S')
    print("[", t,"]",data.decode('utf-8'))
c.close()

运行结果如下：

测试对应的服务端（C++），运行结果如下：

3、UDP方式

3.1 发送端

#!/usr/bin/python
# -*- coding: UTF-8 -*-
# filename：test_udp_client.py
# creator: tomcat
# date: 2021-11-16

from socket import *
from datetime import *

BUFSIZ = 1024
ADDR = ('127.0.0.1', 27015) # or 'localhost'

c = socket(AF_INET, SOCK_DGRAM)

while True:
    data = input('Input: ')
    if not data:
        break
    c.sendto(data.encode(), ADDR)
    data = c.recvfrom(BUFSIZ)
    if not data:
        break

    t = datetime.now().strftime('%H:%M:%S')
    print("[", t,"]", data)
c.close()

运行结果如下：

测试对应的接收端（C++），运行结果如下：

3.2 接收端

#!/usr/bin/python
# -*- coding: UTF-8 -*-
# filename：test_udp_server.py
# creator: tomcat
# date: 2021-11-16

from socket import *
from time import ctime
from datetime import datetime

BUFSIZ = 1024
ADDR = ('127.0.0.1', 27015) # or 'localhost'

s = socket(AF_INET, SOCK_DGRAM)
s.bind(ADDR)

while True:
    print('waiting for clients ...')
    data, addr = s.recvfrom(1024)
    t = datetime.now ().strftime ('%H:%M:%S')
    print('   connnecting from: [', t, "]", addr)

    data = data.decode()
    if not data:
        break
    print('[Received]', data)
    send = input('Input: ')
    s.sendto(send.encode(), addr) 
s.close()

运行结果如下：

测试对应的发送端（C++），运行结果如下：

4、HTTP方式

import requests
import base64

def acces_api_with_cookie(url_login,USERNAME,PASSWORD,url_access):

    # Start a session so we can have persistant cookies
    session = requests.session()

    # This is the form data that the page sends when logging in
    login_data = {
    
    
        'username': USERNAME,
        'password': PASSWORD,
        'submit': 'login',
    }

    # Authenticate
    r = session.post(url_login, data=login_data)

    # Try accessing a page that requires you to be logged in
    r = session.get(url_access)
    #print r.content
    #print r.text
    print(r.status_code)
    return r.content

    #print r.content

id = 1
title = base64.b64encode("wuhan")
studytime = "a"
operat="b"
warning="c"
report="d"
table="portal_post"
url=base64.b64encode('{"action":"portal\/Article\/index","param":{"id":2}}')

url_full = "http://192.168.88.116/user/favorite/add?id="+str(id)\
           +"&title="+title\
           +"&studytime="+studytime\
           +"&operat="+operat\
           +"&warning="+warning\
           +"&report="+report\
           +"&table="+table\
           +"&url="+url
print(url_full)

acces_api_with_cookie("http://192.168.88.116/user/login/dologin.html","admin","admin888", url_full)

后记

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