Middleware to redirect to HTTPS.

code.js

// Middleware to redirect to HTTPS.

module.exports = () => {
    return (req, res, next) => {
        if (req.protocol !== 'https') {
            const host = req.hostname;
            if (host && !req.url.match(/\.well-known/)) {
                res.redirect(301, `https://${host}${req.url}`);
            } else {
                next();
            }
        } else {
            next();
        }
    };
};