App frequently asks for screen recording permissions

[shalak]

Describe the bug
I use droidVNC on a phone that acts as a smart-home display that shows Home Assistant in kiosk mode. I find myself unable to perform any screen input actions via VNC, although I'm able to connect and see the screen as well as press the "Home button" via VNC client. Once I unlock the screen manually, the android request to grant screen-recording permissions is shown, once I allow it everything works correctly.

To Reproduce

1. Start droidVNC on a device that's persistently connected to USB
2. Wait big amount of time

Expected Behavior
The screen-recording permission is persistent

Actual Behavior
The screen-recording permission is revoked and must be "re-granted"

Your environment (please complete the following information):

• droidVNC-NG version: 1.3.3
• Android version: 12
• Client-side OS and version: MacOS Monterey 12.5
• VNC client and version: VNC Viewer 6.21.1109

Additional context
I'm not sure how much time do I have to wait for the permissions to be revoked, but it might be related to the fact that the screen becomes blocked. It usually happens after I update my Home Assistant server and as a consequence the HA client app running on the phone shuts down, thus eventually blocking the screen and revoking permissions for droidVNC

[bk138]

I don't really know what's going on to be honest. What might happen is that Android kills the Service and restart it, you might find something in the logs.

What you might try is:

• Try to see if the same happens with ScreenRecorder as described in https://github.com/bk138/droidVNC-NG#notes
• Grant the permission permanently via adb as described in https://github.com/bk138/droidVNC-NG#notes

[phytoncidez]

I don't really know what's going on to be honest. What might happen is that Android kills the Service and restart it, you might find something in the logs.

What you might try is:

• Try to see if the same happens with ScreenRecorder as described in https://github.com/bk138/droidVNC-NG#notes
• Grant the permission permanently via adb as described in https://github.com/bk138/droidVNC-NG#notes

i have extensive experience with the old droid vnc
the old one doesn't have this problem, because it allows root access.
it works for months without any problem.
please add root privilege as option

[phytoncidez]

I don't really know what's going on to be honest. What might happen is that Android kills the Service and restart it, you might find something in the logs.

What you might try is:

• Try to see if the same happens with ScreenRecorder as described in https://github.com/bk138/droidVNC-NG#notes
• Grant the permission permanently via adb as described in https://github.com/bk138/droidVNC-NG#notes

is the permmision grant via adb permanent? even if the device restarts?
if so, this is the solution

[bk138]

i have extensive experience with the old droid vnc the old one doesn't have this problem, because it allows root access. it works for months without any problem. please add root privilege as option

That's tracked in #31, please have a look there and subscribe, if you like.

[bk138]

is the permmision grant via adb permanent? even if the device restarts? if so, this is the solution

AFAIK yes. You should try it out. Please report here if it works for you.

[bk138]

Tentatively closing, feel free to post here if there are news.