HTTP to HTTPS redirection in Node and Angular 2 App

I have an app which runs on 80 and 443 port. When user hit http version application, it should get redirected to HTTPS. I have tried the below code to do this.

function handleRedirects(req, res, next) {
    if (!req.secure) {
        return res.redirect('https://' + req.get('host') + req.url);
    }
    next();
}

app.use(handleRedirects);

https.createServer(credentials, app).listen(443, function() {
    console.log('App is running on port 443');
});

// all other routes are handled by Angular
app.get('/*', function(req, res) {
    console.log("Default handler\n\n\n\n")
    res.sendFile(path.join(__dirname, '/../../dist/index.html'));
});

app.listen(80, function() {
    logger.info('App is running on port 80');
    admins.refresh();
});

So when app started, if I hit localhost it should get redirected to https://localhost. But its not working as expected. Whats wrong in the code. I have refferred HTTPS redirection for all routes node.js/express - Security concerns

via Santosh Hegde