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Specifically, I'm using the MultipleInstances demo project.
The variable parallelInstances is set to 4 by default.
For this value and any other value over 2, I intermittently get the SEHException, usually around the time everything starts to tear down.
After quite a lot of fiddling, I'm fairly sure the problem is to do with the virtual desktops;
If I force TorSharpSettings.ToolRunnerType to return ToolRunnerType.Simple, the problem goes away.
Of course, if I do that, I get a lot of popup privoxy windows, but it proves the point.
I am using Windows 10 64-bit which is why the ToolRunnerType defaults to VirtualDesktop.
I've tried lock in a few places to force single threading but not managed to isolate a vulnerable area of code.
The message is:
System.Runtime.InteropServices.SEHException
HResult=0x80004005
Message=External component has thrown an exception.
I think this issue probably emerged immediately after 2.10.0 release. The System.Runtime.InteropServices.SEHException bug can be reproduced just by creating new Tor identities in quick succession, from my studies.
I also think I read about an arbitrary crash that can happen when using this library, and I definitely have experience of TorSharp crashing out pretty frequently. May be related to this bug - not sure.
All this said - it is a brilliant library and I really admire the work that has gone into it. Super impressive.
Frankly, I wrote the Virtual Desktop code when I had less experience with PInvoke and Windows APIs. I think there are probably some bad assumptions in the implementation. I have only a little time these days to work on TorSharp due stuff in my personal life so if anyone has a chance to look at a fix or even provide a minimal repro, that might help. I'll leave this open since it appears it's not an isolated problem (4 upvotes).
Specifically, I'm using the
MultipleInstances
demo project.The variable
parallelInstances
is set to 4 by default.For this value and any other value over 2, I intermittently get the SEHException, usually around the time everything starts to tear down.
After quite a lot of fiddling, I'm fairly sure the problem is to do with the virtual desktops;
If I force
TorSharpSettings.ToolRunnerType
to returnToolRunnerType.Simple
, the problem goes away.Of course, if I do that, I get a lot of popup privoxy windows, but it proves the point.
I am using Windows 10 64-bit which is why the
ToolRunnerType
defaults toVirtualDesktop
.I've tried
lock
in a few places to force single threading but not managed to isolate a vulnerable area of code.The message is:
and the stack trace in Visual Studio 2022 is:
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