Simple DDK Driver - Intermittent DriverScanner COMException

[barrett777]

Hi GeoScada Community,

I'm trying to fix an intermittent driver crash, for SE.GeoSCADA.DDK 6.85.8650.  It happens roughly every 1.5 days.

I'm using the DriverApp provided by DriverScanner<> class, for example:

2024-11-13 01:23:02.8267 ServiceHost System.Runtime.InteropServices.COMException (0x80010006): The connection terminated or is in a bogus state and cannot be used any more. Other connections are still valid. (Exception from HRESULT: 0x80010006 (RPC_E_CONNECTION_TERMINATED))
at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
at ClearSCADA.DriverFramework.DriverApp.SendReceiveObject(UInt32 ObjectId, UInt32 Type, Object DataObject)

 I'm wondering what I should be doing in this situation?

Firstly, am I doing something wrong for this to occur, or is this a connection error that can happen in normal situations?

If this occurs, should I wait and retry the same request with this same connection?

Or should I create a new DriverApp?  If so, should I attach the new DriverApp to the DriverScanner<>?

[sbeadle]

It's not clear if this might be related to your code communicating externally or to the driver communicating to the server.

[barrett777 · Accepted solution]

Well we upgraded to the Geoscada 2022 - Aug 2024 update and it seems to have fixed my driver issue, without making any changes to the driver.  It's been about 1 week without crashes or any of the COM issues I had seen previously.  So I think I am good now.

[sbeadle]

It's possible that the error has been resolved by the upgrade, so I have marked that as the solution.