Custom domain

Questions / Help
1

Hello
I have set up a custom domain for my app using A records according to the docs:
https://fly.io/docs/getting-started/working-with-fly-apps/#fly-and-custom-domains
When I write my domain name in the browser it loads my app but the URL address quickly switches back to *.fly.dev domain. What am I missing?

1 Like
2

Hey! Can you send your app name here or in DM? Thanks.

3

rough-sky-1538.fly.dev

4

Thanks. What’s the domain?

5

nentech.pl and www.nentech.pl

6

OK, so this works for me https://nentech.pl. But http://nentech.pl redirects. What’s your application built in? This looks like a ‘force TLS’ type redirect that some frameworks enable by default.

7

Elixir/Phoenix

8

This is just a guess, but do you have a config that looks something like this?

config :hello, HelloWeb.Endpoint,
  url: [host: "example.com"],
  force_ssl: [rewrite_on: [:x_forwarded_proto]]

If so, the host set here will be used for the target of the SSL redirect. To use the current host instead, change force_ssl to:

force_ssl: [rewrite_on: [:x_forwarded_proto], host: nil]
9

Thank you. I will check that

10

Once again thanks. That solved the problem:
force_ssl: [rewrite_on: [:x_forwarded_proto], host: nil]

1 Like
11

Hi, can you help me too.
My app - wandering-fire-179 and pointing to https://undionline.com
The problem is, it does not finish fetching

12

@dev-rroslan I’m hitting https://undionline.com and getting a full response — do you have a little more information? Do you mean one of the secondary requests is taking too long? Or is the site not loading for you at all?

13

It’s ok now. added check_origin in rentime.exs

14

Note: This solution…
force_ssl: [rewrite_on: [:x_forwarded_proto], host: nil]
… also fixes the LiveView infinite refresh problem described in Phoenix LiveView constantly refreshes with custom domain - #10 by stibbs . However this solution solves the endpoint issue in that link as well.

Also note: I noticed this URL redirect problem in Chrome but not Edge!

15

I’d just like to add that I had this issue with a Wordpress site.

The problem was that I had originally set up WP with the .dev domain so I could configure it before redirecting the domain. Then I forgot to set the new domain in the Wordpress settings!

Settings > General > Wordpress Address/Site Address