Open web UI breaks when on remote

[Ten0]

What happened?

Clicking "Open WEB UI" when connected remotely does not work: it tries to open http://<my-url>:5050/ but when connected remotely (DDNS and exposed HA on HTTPS), I don't necessarily have that NAT-ed.
In fact, I don't want to NAT this, because there's no authentication on there so it clearly can't be opened to outside.

There is demand for this to work: https://community.home-assistant.io/t/solved-unable-to-connect-to-web-ui/134193/6

My understanding is that HomeAssistant has a feature called "Ingress" that enables exposing the web UI as an iframe within Home Assistant:

• https://github.com/hassio-addons/addon-ssh/blob/d7c4c89b3c5f9c5948dae022041b006424e57250/ssh/config.yaml#L9-L11
• https://www.home-assistant.io/blog/2019/04/15/hassio-ingress/

Then one should bind to the ingress port instead of to a fully exposed port, and it would:

1. work
2. be more secure (because it would now be authenticated by HomeAssistant instead of being exposed without authentication on the local network)

Version

4.4.2

Installation type

Home Assistant add-on (0.16.7)

(Not sure if maybe I should have opened this on https://github.com/hassio-addons/repository instead but that repository seems maybe a bit too general and it looks like a change might need to happen here as well although I'm not sure.)

Solving

(Updated after discussions below)

For ingress:

The application needs to support being served from a path, i.e. /somefolder/mypath. This can be a challenge for apps which assume everything is served from root (i.e. Javascript/asset loads etc)

Making the app work that way would then allow using the ingress feature.

[acockburn]

Hi there - This issue seems to be related to networking for the AppDaemon addon, which is not developed or supported by this team. I suggest you open an issue with the addon's author.

[Ten0]

Thanks, opened hassio-addons/repository#700

[Ten0]

As it turns out this is a limitation of the way the webapp is built here, so reopening.

hassio-addons/repository#700 (comment)

The application needs to support being served from a path, i.e. /somefolder/mypath. This can be a challenge for apps which assume everything is served from root (i.e. Javascript/asset loads etc)