HTTP to HTTPS redirection on App Engine Flexible

Question

I\'ve followed the answer of this: Redirect from http to https in google cloud but it does not seem to be currently accurate any more. The anchor referenced ( https://cloud.

Answer 1

GCP This should be as easy to just use the gcloud app cli and configure a header (Strict-Transport-Security) or redirect rule. Perhaps the push is to force us to Firebase Hosting instead which is forcing HTTPS already. For a quick solution for Single Page apps (static content) with React, Angular etc, we can use this JS snippet.

It ignores localhost environments. You can change localhost with a host name that you would like to exclude. It then redirects using https as protocol.

 if ( location.host.indexOf("localhost") < 0 && location.protocol.toLowerCase() !== "https:"){
     const url= `https://${location.host}`;
    location.replace(url);    
  }

Answer 2

Pulling Justin's yes-https library, I was able to get this to work:

var app = express();
app.use(function(req, res, next){
  if (req.host != 'localhost' && req.get('X-Forwarded-Proto') == 'http') {
    res.redirect(`https://${req.host}${req.url}`);
    return;
  }

  app.router(req, res, next);
});

At first I thought I had to do that since I was on an appengine subdomain and couldn't use HSTS. Then I learned HSTS works fine for subdomains. :) Regardless, I thought people might want to see what the magic bit to use was if they didn't want to use yes-https for some reason.

Justin, auto-redirecting all traffic to SSL by default sounds great to me. I just spent hours trying to figure out how to do so before I found this post because I was trying to get my app to get Chrome's add to homescreen install banner as per https://developers.google.com/web/fundamentals/engage-and-retain/app-install-banners/.

Answer 3

The flexible environment does not current support handlers in the app.yaml. If you want https:// redirection, you have a few options:

• Use helmet to do to HSTS stuff for you, and implement your own initial redirect.
• I wrote a happy little library to always forces SSL on all routes for express yes-https

We are considering auto-redirecting all traffic to SSL by default. Do you think that would be a good thing for your apps?