a.txt

const http2 = require('http2');
const options = {
 key: getKeySomehow(),
 cert: getCertSomehow()
};

// https is necessary otherwise browsers will not
// be able to connect
const server = http2.createSecureServer(options, (req, res) => {
 res.end('Hello World!');
});
server.listen(3000);