How do I implement HTTPS in Express.js?

How do I implement HTTPS in Express.js?

To implement HTTPS in Express.js, you'll need to create an HTTPS server using the 'https' module and provide a valid SSL certificate.

What do I need for the SSL certificate?

You can obtain an SSL certificate from a Certificate Authority (CA) or create a self-signed certificate for development purposes.

Can you show me a code example?

Sure! Here's a basic example:

const https = require('https');
const fs = require('fs');
const express = require('express');

const app = express();

const options = {
  key: fs.readFileSync('path/to/your/private.key'),
  cert: fs.readFileSync('path/to/your/certificate.crt')
};

https.createServer(options, app).listen(3000, () => {
  console.log('HTTPS Server running on port 3000');
});

What if I want to redirect HTTP to HTTPS?

You can set up a middleware in your Express app to redirect HTTP requests to HTTPS. Here's how:

app.use((req, res, next) => {
  if (req.secure) {
    next();
  } else {
    res.redirect(`https://${req.headers.host}${req.url}`);
  }
});