Gatekeeper: how to handle origin server redirect responses (HTTP 301)

Getting advice
1

I set-up a small local project consisting of Gatekeeper, Keycloak, and a “Hello World” Java web application.

  1. I instructed Gatekeeper to secure - uri: /UnsecureApplication/*.
  2. I navigated to https://gatekeeper.com:3000/UnsecureApplication (missing trailing slash).
  3. The web application responded with HTTP 301 to https://unsecure-application.com:8181/UnsecureApplication/ (with trailing slash).

Now, in my case for this local example I can reach unsecure-application.com, but in a real implementation this would only be reachable on the private network.

How can I instruct Gatekeeper to rewrite the HTTP 301 response location header to from unsecure-application.com to gatekeeper.com? If this the best solution?

When it comes to proxies and networks I am a beginner, so my apologies if this is off base.

2

That is not right task for Gatekeeper. Your app should be aware that is behind reverse proxy and app should use proper host from request header (e.g. from X-Forwarded-Host) instead of current Host header.

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