Example C# Project #42

BigMack-1 · 2023-11-13T23:19:30Z

BigMack-1
Nov 13, 2023

Hi There,
Just wondering if anyone has a Visual Studio C# example that implements the DLL?

Something that connects to the Board and updates a PIN and\or receives an entry\exit access.

Cheers

Nov 28, 2023

Hi,

Just let you know that there are now complete working examples for a Visual Studio (both Mac and Windows) C# console app under the examples/csharp folder.

The examples don't include the DLL because that more or less has to be built locally to link in the system specific libraries, but it's straightforward - it does require Go to be installed and under Windows absolutely requires the mingw compiler:

git clone https://github.com/uhppoted/uhppoted-dll
cd uhppoted-dll
make build

Copy the uhppoted.dll file from the lib folder to your project folder and you should be good to go.

View full answer

uhppoted · 2023-11-14T01:38:36Z

uhppoted
Nov 14, 2023
Maintainer

Hi,

Not to the best of my knowledge - I'm on a Mac so mostly just use mono and command line builds for C#.

I could look into using Visual Studio for Mac to put together a command line app if that would help at all?

1 reply

BigMack-1 Nov 14, 2023
Author

Thanks for the quick response. If you could provide a basic command line or a C# example that would be great.

I did notice a some files in one of C# testing directory’s of the repo that might demo the functions - I’ll check in more detail when I have a chance.

On another note - do you know if it’s possible to change the status of a user from the API? Ie the board registers them as IN - could you alter this to OUT or vice versa.

uhppoted · 2023-11-14T17:46:23Z

uhppoted
Nov 14, 2023
Maintainer

Hi,

There is a C# command line application in the examples - it isn't Visual Studio project but does have an example for every API function. I'll see if I can get a Visual Studio project up and running though (am a bit swamped at the moment I'm afraid, so it will probably only happen either later this week or early next week).

re. IN/OUT. Not as far as I'm aware - have just been through the SDK with a fine-tooth comb and there doesn't seem to be any function in the public API that gets/sets a users location. There may be a manufacturer-only function but TBH I would expect the in/out state of a user to be managed by the application because most installations have multiple controllers and e.g. a user could swipe into an area via one door and then swipe out via a door managed by a different controller.

0 replies

uhppoted · 2023-11-20T16:59:57Z

uhppoted
Nov 20, 2023
Maintainer

Hi,

Just a quick note - I started looking into this and it seems like on Visual Studio for Windows can't import the DLL compiled by Go. No idea why (possibly something to do with the gcc compiler) - I'll have to do some more digging to figure out why and how to fix it.

Tracking issue: Example C# Project: Visual Studio for Windows cannot load DLL

0 replies

BigMack-1 · 2023-11-20T20:14:41Z

BigMack-1
Nov 20, 2023
Author

Thanks for looking into this :)

Just for some background - I have another system that can grant users access (IN\OUT) but need PIN codes as a backup. I am looking to do something relatively straight forward as below:

Implement this as windows program.
Connect a web socket to another program - which sends and receives to the external system.
Add new users to the access board (they will have expiry times).
Receive IN\OUT updates locally from the access board
Alter a users state (or trigger an IN\OUT from the API) on the access board based on the external system.

It doesn't have to be in C# - but I figured its just a good way to package something up for a Windows machine.

Cheers

0 replies

uhppoted · 2023-11-21T00:06:37Z

uhppoted
Nov 21, 2023
Maintainer

Hi,

Ok, so the good news is that I've managed to get a (very extremely) basic C# console app working under both Visual Studio for Mac and Visual Studio for Windows - the project files are in the examples/csharp-vs folder.

Be warned though - at this stage it is nothing more than some very scrappy proof-of-concept code - I'll put some time into polishing it up a bit and adding some functionality over the next week or two but hopefully the underlying stuff shouldn't change.

The critical bits turned out to be:

On Windows you have to have the mingw compiler installed to compile the DLL. I've included the DLL in the examples but you may want to recompile it on your machine
For the launch configuration you need to:
- Specify the working directory
- Add the directory containing the DLL to the PATH environment variable (e.g. I put the DLL in the project directory and the set PATH = %PATH%;${ProjectDir})

Other than that it's straightforward - if you wanted to start a solution from scratch all y 10000 ou would need to do is:

Copy the uhppoted.cs and lookup.cs bindings files into your project
Rebuild or copy the DLL into the project (or at least a known folder)
Set the PATH environment variable to include the DLL folder

In terms of what you want to do it mostly looks pretty doable - the only thing you might run into is that the board doesn't store the IN/OUT state of users so that's something you're going to have to manage yourself. Should be fun .. let me know how you go :-).

0 replies

twystd · 2023-11-28T19:40:16Z

twystd
Nov 28, 2023
Collaborator

Hi,

Just let you know that there are now complete working examples for a Visual Studio (both Mac and Windows) C# console app under the examples/csharp folder.

The examples don't include the DLL because that more or less has to be built locally to link in the system specific libraries, but it's straightforward - it does require Go to be installed and under Windows absolutely requires the mingw compiler:

git clone https://github.com/uhppoted/uhppoted-dll
cd uhppoted-dll
make build

Copy the uhppoted.dll file from the lib folder to your project folder and you should be good to go.

3 replies

threeeye Apr 12, 2024

Hi there,
Just a quick question (or clarification).
I installed mingw, when I run it, a cmd window opens, and I get:
'make' is not recognized as an internal or external command,
operable program or batch file.

I'm sure I'm doing something wrong...
Thanks in advance

uhppoted Apr 12, 2024
Maintainer

Hi,

You probably just need to install make as a separate thing - it's been a while but I seem to remember that it's not installed as part of mingw. If you're using chocolatey then it's just:

choco install make

The Makefile is simple enough that you can just run the commands manually if you prefer, but make does simplify it a whole lot.

threeeye Apr 15, 2024

Thanks for the reply.
I managed to 'make' the DLL, but when trying to add it to my .NET8 project I get an error: The reference is invalid or unsupported.
And adding it to a .NET 4.8 it crashes
Any suggestions?

Thanks again

EDIT:
I copied the DLL and the make file to my project, I think it works now, but GetDevices gives me 3 devices and non of them actually exists (I have about 50 controllers)

uhppoted · 2024-04-15T15:37:18Z

uhppoted
Apr 15, 2024
Maintainer

Hi,

Great! I've got a TODO item to look into building the DLL on github but it will be a while before a I get to it so glad you got it working. I've only ever built this on .NET7 (mono) and .NET8 (VS Windows/Mac) - the C# foreign function interface has probably changed significantly since .NET 4.8 so not too surprised it doesn't work.

re. GetDevices. Hmm, that's weird - are they by any chance the test/simulation controllers (405419896, 303986753 and 201020304 )?

However, the most likely reason is that GetDevices uses UDP broadcast so it can only find controllers on the local LAN. If the controllers are on a separate network segment they're not reachable by UDP broadcast and you need to add a list of controllers and their addresses when instantiating the Uhppoted instance - the mono example shows how to do that:

   ...
    static Controller[] controllers = { new Controller(405419896, "192.168.1.100"),
                                        new Controller(303986753, "192.168.1.100") };

   ...
   Uhppoted u = new Uhppoted("0.0.0.0", "255.255.255.255", "0.0.0.0:60001", 2500, controllers, true);
   ...

There are a couple of other things you can try:

try increasing the timeout from 2500ms to say 5000ms and enable debugging when you instantiate the Uhppoted instance:

  ...
   Uhppoted u = new Uhppoted("0.0.0.0", "255.255.255.255", "0.0.0.0:60001", 5000, controllers, true);
   ...

download the CLI and run the get-devices command:

uhppote-cli --debug get-devices

5 replies

threeeye Apr 15, 2024

Yes, I'm getting the test/simulation controllers.
I imported the uhppoted.dll and uhppoted-dll-cli.dll but I don't see where the test/simulation is configured

uhppoted Apr 15, 2024
Maintainer

Well, that was totally a wild guess :-).

Ok (and assuming you are not actually running the simulator) - if you did a make build it will have built three versions of the DLL in the lib folder:

lib\uhppoted.dll
lib\debug\uhppoted.dll
lib\tests\uhppoted.dll

The one you want is lib\uhppoted.dll and you don't need the uhppoted-dll-cli.dll. At a guess you are using either the debug or tests DLLs, both of which return a canned response:

lib\debug\uhppoted.dll is for use in debugging the weird ways languages can pack data when they invoke a DLL function
lib\tests\uhppoted.dll is for integrations tests and is used to validate the function calls are being invoked correctly.

threeeye Apr 15, 2024

Thanks for the info.
But I still can't add the DLL as a reference in my project (VB.NET on .NET8 Core)
I get an error message: The reference is invalid or unsupported.

uhppoted Apr 15, 2024
Maintainer

How did you resolve the "reference is invalid or unsupported" error before?

It normally means you need to add it to the launch settings and possibly also the PATH environment variable, e.g.:

launchSettings.json
{
  "profiles": {
    "uhppoted-dll-cli": {
      "commandName": "Project",
      "commandLineArgs": "get-controllers",
      "workingDirectory": "C:\\uhppoted\\uhppoted-dll\\examples\\csharp\\vs-win",
      "environmentVariables": {
        "PATH": "%PATH%;${ProjectDir}"
      }
    }
  }
}

and add the DLL folder to the global PATH environment variable, or set the PATH when you run it, e.g.

PATH=. && .\bin\Debug\net8.0\uhppoted-dll-cli get-devices

(DLL lookup on Windows is insanely complicated - Dynamic-link library search order)

Otherwise:

I honestly have no idea if the DLL will work with VB.NET - it's only ever been tested with C#. But if you were able to run GetDevices with the debug/test DLL then it should be ok.
Are you able to build and run the vs-win example ?
Can you perhaps post your project, solutions and launch settings files?

threeeye Apr 16, 2024

I don't really know how I resolved the error before.

I also converted the uhppoted.cs and lookup.cs from C# to VB.NET.
I tried adding the makefile (and editing it) to my project, when running 'make' from wingw64, the project runs and finds 22 of my 50 controllers.
But when I run the project from VS, I get this error:
System.DllNotFoundException: 'Unable to load DLL 'uhppoted.dll' or one of its dependencies: The specified module could not be found. (0x8007007E)'

Here is my code:

Public Class Form1
    Dim AQ As uhppoted.Uhppoted
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Dim controllers() As uhppoted.Controller = Array.Empty(Of uhppoted.Controller)()

        AQ = New uhppoted.Uhppoted("192.168.110.7", "255.255.255.255", "0.0.0.0:60001", 2500, controllers, True)

        Dim c As UInt32() = AQ.GetDevices()

        MsgBox(c.Length)
    End Sub
End Class

it crashes on:

Public Function GetDevices() As UInteger()
            Dim N As Integer = 0
            Dim count As Integer = N
            Dim slice As UInteger()

            Do
                N += 16
                count = N
                slice = New UInteger(N - 1) {}
                Dim err As String = GetDevices(u, count, slice)

                If err IsNot Nothing AndAlso err <> "" Then
                    Throw New UhppotedException(err)
                End If
            Loop While N < count

            Dim list As UInteger() = New UInteger(count - 1) {}
            Array.Copy(slice, list, list.Length)
            Return list
        End Function

in line Dim err As String = GetDevices(u, count, slice) (this is in the Uhppoted Class)

EDIT:
Adding launchSettings.json to my project didn't help, it generated an empty App.config (I didn't have that file before)

uhppoted · 2024-04-16T15:56:32Z

uhppoted
Apr 16, 2024
Maintainer

re. VB.NET. Huh! Good to know it's possible! Any particular reason you converted to VB rather than just stick with the C#?

But, ok, that helps - assuming your Makefile still looks more or less like the example Makefile, when it runs a command it first sets the PATH environment variable to the lib folder and then runs the command. So the actual command it is running is something like:

PATH=..\..\..\lib && .\bin\Debug\net8.0\uhppoted-dll-cli get-devices

The PATH bit allows Windows to find uhppoted.dll in the lib folder.

To get the same behaviour inside VS you need to edit the launch configuration and set the PATH environment variable to "..\..\..lib". Microsoft doesn't seem to have any documentation on how to do that for VB but for C# it's here and I assume it's similar.

So if uhppoted.dll is located in the original lib folder, it would look something like this:

...
     "environmentVariables": {
        "PATH": "%PATH%;..\..\..\lib"
      }
...

or if you've copied the the DLL to your project folder:

...
     "environmentVariables": {
        "PATH": "%PATH%;${ProjectDir}"
      }
...

1 reply

threeeye Apr 16, 2024

I converted them to VB because I can't have a mixed VB and C# project (as far as I know), and although C# and VB are very similar, I don't get along with C# (I blame the ';' )...
Here is my launchSettings.json:

{
  "profiles": {
    "AQ-Test-Core": {
      "commandName": "Project",
      "commandLineArgs": "get-controllers",
      "workingDirectory": "d:\\Projects\\AQ-Test-Core\\AQ-Test-Core",
      "environmentVariables": {
        "PATH": "%PATH%;${ProjectDir}"
      }
    }
  }
}

and the App.config that got generated:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
</configuration>

And the Makefile:

DLL = ..\..\..\lib
CLI = PATH=. && .\bin\Debug\net8.0-windows10.0.22621.0\AQ-Test-Core
CONTROLLER = 0

get-controllers:
	$(CLI) get-controllers

get-controller:
	$(CLI) get-controller --controller $(CONTROLLER)

set-address:
	$(CLI) set-address --controller $(CONTROLLER)

get-status:
	$(CLI) get-status --controller $(CONTROLLER)

get-time:
	$(CLI) get-time --controller $(CONTROLLER)

set-time:
	$(CLI) set-time --controller $(CONTROLLER)

get-listener:
	$(CLI) get-listener --controller $(CONTROLLER)

set-listener:
	$(CLI) set-listener --controller $(CONTROLLER)

get-door-control:
	$(CLI) get-door-control --controller $(CONTROLLER)

set-door-control:
	$(CLI) set-door-control --controller $(CONTROLLER)

open-door:
	$(CLI) open-door --controller $(CONTROLLER)

get-cards:
	$(CLI) get-cards --controller $(CONTROLLER)

get-card:
	$(CLI) get-card --controller $(CONTROLLER)

get-card-by-index:
	$(CLI) get-card-by-index --controller $(CONTROLLER)

put-card:
	$(CLI) put-card --controller $(CONTROLLER)

delete-card:
	$(CLI) delete-card --controller $(CONTROLLER)

delete-all-cards:
	$(CLI) delete-all-cards --controller $(CONTROLLER)

get-event-index:
	$(CLI) get-event-index --controller $(CONTROLLER)

set-event-index:
	$(CLI) set-event-index --controller $(CONTROLLER)
 
get-event:
	$(CLI) get-event --controller $(CONTROLLER)

record-special-events:
	$(CLI) record-special-events --controller $(CONTROLLER) 

get-time-profile:
	$(CLI) get-time-profile --controller $(CONTROLLER)

set-time-profile:
	$(CLI) set-time-profile --controller $(CONTROLLER)

clear-time-profiles:
	$(CLI) clear-time-profiles --controller $(CONTROLLER)

add-task:
	$(CLI) add-task --controller $(CONTROLLER)

refresh-tasklist:
	$(CLI) refresh-tasklist --controller $(CONTROLLER)

clear-tasklist:
	$(CLI) clear-tasklist --controller $(CONTROLLER)

set-pc-control:
	$(CLI) set-pc-control --controller $(CONTROLLER)

set-interlock:
	$(CLI) set-interlock --controller $(CONTROLLER)

activate-keypads:
	$(CLI) activate-keypads --controller $(CONTROLLER)

set-door-passcodes:
	$(CLI) set-door-passcodes --controller $(CONTROLLER)

restore-default-parameters:
	$(CLI) restore-default-parameters --controller $(CONTROLLER)

EDIT:
I think I got it!!!
I added a DLLImport to the Form1_Load:
LoadNativeAssembly(Application.StartupPath, "uhppoted.dll")
and:

    <DllImport("kernel32.dll", CharSet:=CharSet.Auto, SetLastError:=True)>
    Private Shared Function LoadLibrary(libname As String) As IntPtr
    End Function

    Private Sub LoadNativeAssembly(nativeBinaryPath As String, assemblyName As String)
        Dim path = IO.Path.Combine(nativeBinaryPath, assemblyName)
        Dim ptr = LoadLibrary(path)

        If ptr = IntPtr.Zero Then
            Throw New Exception(String.Format("Error loading {0} (ErrorCode: {1})", assemblyName, Marshal.GetLastWin32Error()))
        End If
    End Sub

But I still only get 22 out of my 50 controllers

EDIT2:
I'm going on vacation, so I don't know when I'll be able to continue with this project

uhppoted · 2024-04-16T18:10:56Z

uhppoted
Apr 16, 2024
Maintainer

Ah! Great! I was about to suggest either printing out the PATH environment variable just before the DLL gets loaded or else add the folder to the PATH in the system environment variables, but that looks like a better way to do it. Nice!

re. 22 out of 50 controllers. That is most likely something to do with the network configuration:

Are all the controllers on the same LAN segment? If you can post the IP address of one of the 'found' controllers and the IP address of one the 'not found' controllers it might provide a clue
If you run the uhppote-cli get-devices command does it also only return 22 controllers?

uhppote-cli --debug get-devices

You could also try increasing the timeout from 2500ms to 5000ms - don't think that's the issue but it's worth eliminating:

AQ = New uhppoted.Uhppoted("192.168.110.7", "255.255.255.255", "0.0.0.0:60001", 5000, controllers, True)

1 reply

threeeye Apr 16, 2024

The controllers don't have IP addresses (non of them).
And yes, they are all on the same network, and I tried increasing the ms up to 10000, no change.
And running 'make' on the C# example I get the 3 simulation controllers.

Running the exe:

D:\mingw64\uhppoted-dll\examples\csharp\vs-win\bin\Debug\net8.0>uhppoted-dll-cli.exe --debug get-controllers
uhppoted-dll Visual Studio C# Example (MacOS)

  *** ERROR: invalid command (--debug)

  Usage: uhppoted-dll-cli <command>

  Supported commands
    get-controllers
    get-controller
    set-address
    get-status
    get-time
    set-time
    get-listener
    set-listener
    get-door-control
    set-door-control
    open-door
    get-cards
    get-card
    get-card-by-index
    put-card
    delete-card
    delete-all-cards
    get-event-index
    set-event-index
    get-event
    record-special-events
    get-time-profile
    set-time-profile
    clear-time-profiles
    add-task
    refresh-tasklist
    clear-tasklist
    set-pc-control
    set-interlock
    activate-keypads
    set-door-passcodes
    restore-default-parameters


D:\mingw64\uhppoted-dll\examples\csharp\vs-win\bin\Debug\net8.0>uhppoted-dll-cli.exe get-controllers
uhppoted-dll Visual Studio C# Example (MacOS)
>>> get-devices
    N:  16

get-controllers (3)
   201020304
   303986753
   405419896

10000

uhppoted · 2024-04-16T19:08:10Z

uhppoted
Apr 16, 2024
Maintainer

That suggests it's something to do with the network configuration - possibly the controllers don't have the correct gateway or subnet masks configured.

Can you run the get-devices command using the CLI from this project: https://github.com/uhppoted/uhppote-cli. It's the reference implementation and if it also only finds 22 controllers it will more or less confirm the network configuration hypothesis (there are executables in the Releases section so you don't need to build it).

You could also try binding to 0.0.0.0:

AQ = New uhppoted.Uhppoted("0.0.0.0", "255.255.255.255", "0.0.0.0:60001", 2500, controllers, True)

The controllers will definitely have IP addresses but they may be being auto-assigned - if the controllers are visible in the manufacturer application the IP addresses should be displayed there somewhere. Or if you have access to the router they may also be in the ARP table.

12 replies

uhppoted May 6, 2024
Maintainer

123339118 is a very weird serial number? They typically start with 2 (for the two door controllers) or 4 (four door controllers).

Howsoever .. going to need to narrow it down a bit:

Does anything get logged to the console if you enable debug in your implementation? In C# you would set it in the constructor:

 public Uhppoted(string bind, string broadcast, string listen, int timeout,Controller[] controllers, bool debug) {
   ...

What timeout value are you using?
Can you post the output for uhppote-cli get device:

uhppote-cli --debug get-device 123339118

Ditto for the C# example, e.g.:

uhppoted-dll-cli get-controller --controller 123339118

re. UDP listener. TBH, I haven't a clue how you would do it in VB .. however, as a first approximation:

start with this stackoverflow answer: https://stackoverflow.com/questions/16160550/visual-basic-udpclient-server-client-model. The second answer is better than the accepted answer - if you're using the first answer then you only need the receive bit.
set your controller listener address and port with set-listener
swipe a card
see if you receive anything at all and we can take it from there

threeeye May 6, 2024

re. weird serial number, it's a 1 door controller.
The rest are 4 doors, and their SN starts with 4

re. debug, I think my debug is set to on (aka True): AQ = New uhppoted.Uhppoted("192.168.110.7", "255.255.255.255", "0.0.0.0:60001", 2500, Array.Empty(Of Controller)(), True)

re. timeout, I tried with 2500, 5000 and 10000

re. output
From uhppote-cli:

D:\uhppote-cli_v0.8.8\windows>uhppote-cli.exe --bind 192.168.110.7 --broadcast 255.255.255.255:60000 --debug get-device 123339118
 ... request
 ...          00000000  17 94 00 00 6e 01 5a 07  00 00 00 00 00 00 00 00  |....n.Z.........|
 ...          00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...          00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...          00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...

 ... sent 64 bytes to 255.255.255.255:60000

 ... received 64 bytes from 192.168.110.6:60000
 ...          00000000  17 94 00 00 6e 01 5a 07  c0 a8 00 00 ff ff ff 00  |....n.Z.........|
 ...          00000010  00 00 00 00 00 66 07 5a  01 6e 08 98 20 19 05 21  |.....f.Z.n.. ..!|
 ...          00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...          00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...
123339118  192.168.0.0     255.255.255.0   0.0.0.0         00:66:07:5a:01:6e v8.98 2019-05-21

Output from uhppoted-dll-cli:

uhppoted-dll\examples\csharp\vs-win\bin\Debug\net8.0>uhppoted-dll-cli.exe get-controller --controller 123339118
uhppoted-dll Visual Studio C# Example (MacOS)
>>> get-device
    ID: 123339118

re. UDP listener, I'll try it

uhppoted May 6, 2024
Maintainer

For some reason your uhppoted-dll-cli is using the lib/debug/uhppoted.dll - in which case you should have gotten exactly this output:

>>> get-device
    ID: 123339118

get-device
  ID              405419896
  address         192.168.1.101
  subnet mask     255.255.255.0
  gateway address 192.168.1.1
  MAC             00:12:23:34:45:56
  version         v8.92
  released        2018-11-05

Best guess at this stage is that the timeout is being set to something large because of an alignment mismatch between VB and cgo. Can you post your implementation of uhppoted.cs? Specifically the bit where you initialise the Uhppoted struct, i.e.:

    public Uhppoted(string bind, string broadcast, string listen, int timeout,
                    Controller[] controllers, bool debug) {
        this.u.bind = bind;
        this.u.broadcast = broadcast;
        this.u.listen = listen;
        this.u.timeout = timeout;
        this.u.devices = IntPtr.Zero;
        this.u.debug = debug;
        ...

threeeye May 7, 2024

re. uhppoted.cs (which is actually uhppoted.vb):

        Public Sub New(bind As String, broadcast As String, listen As String, timeout As Integer, controllers As Controller(), debug As Boolean)
            u.bind = bind
            u.broadcast = broadcast
            u.listen = listen
            u.timeout = timeout
            u.devices = IntPtr.Zero
            u.debug = debug
            Dim N As UInteger = controllers.Length
            Dim list As Udevice() = New Udevice(N - 1) {}

            For ix As Integer = 0 To controllers.Length - 1
                Dim c As Controller = controllers(ix)
                list(ix).ID = c.ID
                list(ix).address = c.address
            Next

            Dim sz As Integer = Marshal.SizeOf(GetType(Udevice))
            Dim p As IntPtr = Marshal.AllocHGlobal(CInt(N) * sz)

            For ix As Integer = 0 To list.Length - 1
                Dim d As Udevice = list(ix)
                Dim q As IntPtr = p + ix * sz
                Marshal.StructureToPtr(d, q, False)
            Next

            Dim devices As New Udevices With {
                .N = N,
                .devices = p
            }
            Dim r As IntPtr = Marshal.AllocHGlobal(Marshal.SizeOf(devices))
            Marshal.StructureToPtr(devices, r, False)
            u.devices = r
        End Sub

BTW, when I copy my app to the computer that is currently monitoring all the controllers and I run 'GetDevices' I get the 22 that I saw on my computer, but when I run 'GetStatus' the app just closes (with no error) even when I put it in a Try Catch statement.

Tests for uhppoted-dll-cli on the computer that is currently monitoring all the controllers:

Original DLL, 1st time:

C:\Users\AQ\Desktop\net8.0>uhppoted-dll-cli.exe get-controller --controller 123339118
uhppoted-dll Visual Studio C# Example (MacOS)
>>> get-device
    ID: 123339118

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at System.Runtime.InteropServices.Marshal.FreeCoTaskMem(IntPtr)
   at uhppoted.Uhppoted.GetDevice(UInt32)
   at UhppotedDLLCLI.GetController(uhppoted.Uhppoted, System.String[])
   at UhppotedDLLCLI.Main(System.String[])

Original DLL, every other time after the 1st time (also with the DLL from uhppoted-dll\lib\debug):

C:\Users\AQ\Desktop\net8.0>uhppoted-dll-cli.exe get-controller --controller 123339118
uhppoted-dll Visual Studio C# Example (MacOS)
>>> get-device
    ID: 123339118

DLL from uhppoted-dll\lib:

C:\Users\AQ\Desktop\net8.0>uhppoted-dll-cli.exe get-controller --controller 123339118
uhppoted-dll Visual Studio C# Example (MacOS)
 ... request
 ...          00000000  17 94 00 00 6e 01 5a 07  00 00 00 00 00 00 00 00  |....n.Z.........|
 ...          00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...          00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...          00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...

 ... sent 64 bytes to 255.255.255.255:60000

 ... received 64 bytes from 192.168.110.7:60000
 ...          00000000  17 94 00 00 6e 01 5a 07  c0 a8 00 00 ff ff ff 00  |....n.Z.........|
 ...          00000010  00 00 00 00 00 66 07 5a  01 6e 08 98 20 19 05 21  |.....f.Z.n.. ..!|
 ...          00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...          00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 ...

DLL from uhppoted-dll\lib\tests\ (doesn't even see the controller):

C:\Users\AQ\Desktop\net8.0>uhppoted-dll-cli.exe get-controller --controller 123339118
uhppoted-dll Visual Studio C# Example (MacOS)

No DLL (fails as expected):

 C:\Users\AQ\Desktop\net8.0>uhppoted-dll-cli.exe get-controller --controller 123339118
uhppoted-dll Visual Studio C# Example (MacOS)
  *** ERROR: Unable to load DLL 'uhppoted.dll' or one of its dependencies: The specified module could not be found. (0x8007007E)

uhppoted May 7, 2024
Maintainer

Hi,

I've copied most of this to a new VB.NET discussion - let's continue there because it's increasingly off topic here.

Example C# Project #42

Uh oh!

Replies: 10 comments · 23 replies

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uhppoted Nov 14, 2023 Maintainer

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BigMack-1 Nov 14, 2023 Author

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uhppoted Nov 14, 2023 Maintainer

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uhppoted Nov 20, 2023 Maintainer

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BigMack-1 Nov 20, 2023 Author

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uhppoted Nov 21, 2023 Maintainer

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twystd Nov 28, 2023 Collaborator

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uhppoted Apr 12, 2024 Maintainer

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uhppoted Apr 15, 2024 Maintainer

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uhppoted Apr 15, 2024 Maintainer

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uhppoted Apr 15, 2024 Maintainer

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uhppoted Apr 16, 2024 Maintainer

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uhppoted Apr 16, 2024 Maintainer

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uhppoted Apr 16, 2024 Maintainer

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uhppoted May 6, 2024 Maintainer

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uhppoted May 6, 2024 Maintainer

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uhppoted May 7, 2024 Maintainer

Replies: 10 comments 23 replies

uhppoted
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uhppoted
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uhppoted
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twystd
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uhppoted Apr 12, 2024
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