Caddy using LetsEncrypt, Android App not working

[Woodrowe_Bones]

1. The problem I’m having:

The problem I’m having is that when accessing an application behind my caddy reverse proxy, it works fine in a browser on my android phone but the android app doesnt work. This is the issue in question I’m quite sure:
Can’t connect to server if Let’s Encrypt intermediate are certificates missing · Issue #571 · jellyfin/jellyfin-android · GitHub

3. Caddy version:

Windows Caddy v2.8.4

4. How I installed and ran Caddy:

Downloaded latest executable and put it in the directory where I use it

a. System environment:

Windows 11

More info:

It appears the fix for others in that thread is to tell their reverse proxy software to include the full chain of certificates. I can see the certs at Chains of Trust - Let's Encrypt but I dont know how to set Caddy to instruct the client to use it

[Bruce5051 (Bruce)]

Hi @Woodrowe_Bones,

This probably more supplemental information, but maybe it is the Android version(s) that are being used.

Certificate Compatibility - Let's Encrypt

[Woodrowe_Bones]

I have a Pixel 8 Pro so its running a very recent version of Android.

I did figure out that its not what I thought. It seems the app doesnt redirect properly. I have Caddy setup so that if go to my.url.com it actually redirects to a base URL that adds /service to the URL. The browsers do this without issue but the Android app seems to ignore the redirect. I’ve solved the issue for now!

Thanks for the reply!