Need Help with Triggering Host Application Form Junest

[KevinFan9729]

Hello people,

I'm not entirely sure if this is the right place to post this issue, but I appreciate any guidance you can offer.

I've set up Junest and installed Chromium within this environment. On my host system, I have an application configured with a MIME type tied to a custom URL scheme. This application launches successfully from a browser installed on the host when this URL is triggered.

However, when I attempt to trigger the same URL from Chromium running inside the Junest environment, it fails to invoke the application on the host. I understand that Junest is designed to be isolated from the host, but I'm exploring possible ways to bridge this gap.

I've come across the XDG Desktop Portal, which is intended to allow applications within a sandbox to access external resources. I am uncertain about how to configure this in the context of Junest to achieve the desired functionality. Can anyone provide some insight or guidance on setting this up, or confirm if it's even possible?

Thank you in advance for your help!