HTTP 各种特性应用（二）

一、Cookie

通过 Set-Cookie 设置、下次浏览器请求就会带上、键值对，可以设置多个。

Cookie 属性

max-age 和 expires 设置过期时间

Secure 只在 https 的时候发送

HttpOnly 无法通过 document.cookie 访问

server.js 代码

const http = require('http')

const fs = require('fs')

http.createServer(function (request, response) {

  console.log('request come', request.url)

  if (request.url === '/') {

    const html = fs.readFileSync('test.html', 'utf8')

    response.writeHead(, {

      'Content-Type': 'text/html',

      'Set-Cookie': ['id=123; max-age=2', 'abc=456;domain=test.com']

    })

    response.end(html)

  }

}).listen()

console.log('server listening on 8888')

test.html 代码

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <meta http-equiv="X-UA-Compatible" content="ie=edge">

  <title>Document</title>

</head>

<body>

  <div>Content</div>

</body>

<script>

  console.log(document.cookie)

</script>

</html>

请求结果：

二、 HTTP 长连接

server.js

const http = require('http')

const fs = require('fs')

http.createServer(function (request, response) {

  console.log('request come', request.url)

  const html = fs.readFileSync('test.html', 'utf8')

  const img = fs.readFileSync('test.jpg')

  if (request.url === '/') {

    response.writeHead(, {

      'Content-Type': 'text/html',

    })

    response.end(html)

  } else {

    response.writeHead(, {

      'Content-Type': 'image/jpg',

      'Connection': 'keep-alive' // or close

    })

    response.end(img)

  }

}).listen()

console.log('server listening on 8888')

test.html

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <meta http-equiv="X-UA-Compatible" content="ie=edge">

  <title>Document</title>

</head>

<body>

  <img src="/test1.jpg" alt="">

  <img src="/test2.jpg" alt="">

  <img src="/test3.jpg" alt="">

  <img src="/test4.jpg" alt="">

  <img src="/test5.jpg" alt="">

  <img src="/test6.jpg" alt="">

  <img src="/test7.jpg" alt="">

  <img src="/test11.jpg" alt="">

  <img src="/test12.jpg" alt="">

  <img src="/test13.jpg" alt="">

  <img src="/test14.jpg" alt="">

  <img src="/test15.jpg" alt="">

  <img src="/test16.jpg" alt="">

  <img src="/test17.jpg" alt="">

  <img src="/test111.jpg" alt="">

  <img src="/test112.jpg" alt="">

  <img src="/test113.jpg" alt="">

  <img src="/test114.jpg" alt="">

  <img src="/test115.jpg" alt="">

  <img src="/test116.jpg" alt="">

  <img src="/test117.jpg" alt="">

</body>

</html>

test.jpg

请求运行结果：

巴特西

HTTP 各种特性应用（二）

一、Cookie

二、 HTTP 长连接

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