Dangling child process created by smartdnsblock are not terminated after disconnect

[XCanG]

Application

Outline Client

Describe the bug

Every time I connect-disconnect Outline service spawn nested processes, however upon disconnecting it not properly terminate them, in the end console processes that runned in background keep running. For a short time usage where I use connection often during the day it keeps dozens of leftover processes hanging indefinitely. For more instructions look at the attached video.

Steps to reproduce

1. Open the application
2. Click connect
3. Click disconnect
4. Check processes

What did you expect to happen?

All opened processes will be closed on disconnect.

What actually happened?

Processes keep hanging indefinitely.

Outline Version

1.13.1 (476278)

What operation system are you using?

Windows

Operating System Version

Windows 10 x64 10.0.19043

Screenshots and Videos

Some of the processes not related to outline here, but I filtered them as I can, you can see that when I disconnect console processes moved to bottom and stack upon every disconnect.

2024-10-17_19-53-33_Outline.mp4

[jyyi1]

Hi @XCanG , this is expected. The four Outline.exe process are all chromium processes (we will spawn the tun2socks.exe process during connection), and the OutlineService.exe will spawn a bunch of child processes as well (like the netsh command and the smartdnsblock).

OutlineService.exe is a Windows service that is expected to run 24/7, otherwise Outline Client will fail to connect.

[XCanG]

Did you check the video? An infinitely increasing processes is a bug, those processes isn't used for a new connection that created later.

Also I have nothing against service, it just not clean up processes properly on disconnect.

[jyyi1]

I see. You are saying the child processes created by smartdnsblock, we terminated the parent one but the child process remains dangling.