Subdomain redirector

[joonas-fi]

Now we have:

{
  "id": "example.net",
  "frontends": [
    {
      "kind": "hostname",
      "hostname": "example.net",
      "path_prefix": "/"
    }
  ],
  "backend": "..."
}

We want to be able to redirect www. => naked domain. Options:

• Without writing any code, we already have a redirect backend, but our design assumes one backend per app, so we'd have to write separate app for the redirect. => not good
• Support multiple backends per app (override with redirect backend on www. hostname). This is the only use case that requires it => not good
• Just have a flag on the frontend that it should redirect to naked domain, and have Edgerouter handle that internally somehow. That feels a bit dirty though, too.

The last idea looks something like:

{
  "id": "example.net",
  "frontends": [
    {
      "kind": "hostname",
      "hostname": "example.net",
      "path_prefix": "/"
    },
    {
      "kind": "hostname",
      "hostname": "www.example.net",
      "path_prefix": "/",
      "redirect_to_naked_domain": true
    }
  ],
  "backend": "..."
}

Currently we're using Cloudflare page rules for this, but I don't like it because I like the idea of turning Cloudflare off and not having behavioural changes