expressjsHow can I use Express.js to enable HTTP/2 support?

Express.js is a popular web application framework for Node.js that can be used to enable HTTP/2 support. To do so, you will need to use the spdy module, which is included in the Express.js installation.

Here is an example of how to enable HTTP/2 support in Express.js:

const express = require('express');
const spdy = require('spdy');

const app = express();

spdy
  .createServer({
    key: fs.readFileSync('server.key'),
    cert: fs.readFileSync('server.crt')
  }, app)
  .listen(3000, (error) => {
    if (error) {
      console.error(error);
      return process.exit(1);
    } else {
      console.log('Listening on port: 3000.');
    }
  });

This code will create an HTTPS server on port 3000 using the server.key and server.crt files. It will also enable HTTP/2 support for the Express.js application.

Code explanation

• const express = require('express') - This imports the Express.js module.
• const spdy = require('spdy') - This imports the spdy module which is used to enable HTTP/2 support.
• const app = express() - This creates an Express.js application.
• spdy.createServer() - This creates an HTTPS server and enables HTTP/2 support.
• key: fs.readFileSync('server.key') - This provides the server key which is used to create the HTTPS server.
• cert: fs.readFileSync('server.crt') - This provides the server certificate which is used to create the HTTPS server.
• listen() - This starts the server on the specified port.

Here is a list of ## Helpful links

• Express.js Documentation
• Node.js Documentation
• HTTP/2 Documentation

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