详解如何在Node.js中实现HTTP/2推送信息

npm install http2

const http2 = require('http2');
const fs = require('fs');

// 读取 SSL 证书
const serverOptions = {
  key: fs.readFileSync('path/to/your/private-key.pem'),
  cert: fs.readFileSync('path/to/your/certificate.pem')
};

// 创建 HTTP/2 服务器
const server = http2.createSecureServer(serverOptions);

// 监听请求
server.on('stream', (stream, headers) => {
  stream.respond({
    ':status': 200,
    'content-type': 'text/html'
  });

  // 发送响应数据
  stream.end('<h1>Hello, HTTP/2!</h1>');
});

// 启动服务器
server.listen(3000, () => {
  console.log('HTTP/2 server is running on https://localhost:3000');
});

server.on('stream', (stream, headers) => {
  stream.respond({
    ':status': 200,
    'content-type': 'text/html'
  });

  // 推送额外的 CSS 文件
  const push = stream.pushStream({ ':path': '/styles.css' }, (err) => {
    if (err) console.error(err);
    else {
      push.respond({
        ':status': 200,
        'content-type': 'text/css'
      });
      push.end('body { background-color: lightblue; }');
    }
  });

  // 发送响应数据
  stream.end('<h1>Hello, HTTP/2!</h1>');
});

server.on('stream', (stream, headers) => {
  const path = headers[':path'];

  if (path === '/') {
    stream.respond({
      ':status': 200,
      'content-type': 'text/html'
    });

    // 条件推送 CSS 文件
    const push = stream.pushStream({ ':path': '/styles.css' }, (err) => {
      if (err) console.error(err);
      else {
        push.respond({
          ':status': 200,
          'content-type': 'text/css'
        });
        push.end('body { background-color: lightblue; }');
      }
    });

    // 发送响应数据
    stream.end('<h1>Hello, HTTP/2!</h1>');
  }
});

curl -k -i https://localhost:3000/