将所有URL重定向到Node.js中没有www的安全URL

Question

I am using the code below to redirect all my traffic to https version without www ie for one my application hosted on a subdomain. It should work for the following cases:

• http://subdomain.domain.com
• http://www.subdomain.domain.com
• https://www.subdomain.domain.com
• www.subdomain.domain.com

All the above should redirect to https://subdomain.domain.com .

I am trying out this on my Node.js application.

app.use('*', function(req, res, next) {

    // https
    if (req.headers["x-forwarded-proto"] == "https") {

        // https with www
        if (req.headers.host.match(/^www/) !== null) {
            res.redirect(301, 'https://' + req.headers.host.replace(/^www\./, '') + req.url);
        }

        // https without www
        else {
            next();
        }
    }

    // http
    else {

        // http with www
        if (req.headers.host.match(/^www/) !== null) {
            res.redirect(301, 'https://' + req.headers.host.replace(/^www\./, '') + req.url);
        }

        // http without www
        else {
            res.redirect("https://subdomain.domain.com" + req.url);
        }
    }
});

I am not able to get the redirection working. For the fourth URL ie www.subdomain.domain.com, I have updated my DNS as well.

Answer 1

Below Code Snippet Check if URL is not secure it redirects to https with replacing www from url.

app.use('*',function(req, res, next){
 if (!req.secure) {
   res.redirect('https://' + req.headers.host.replace(/\/\/www\./, '') + req.url);
 }
 next();
})