IL2CPP NotSupportedException SerialPort::GetPortNames

I'm attempting to use the method SerialPort.GetPortNames from System.IO.Ports and getting the following message from the Windows 64-bit standalone player:

NotSupportedException: System.IO.Ports.SerialPort::GetPortNames
at System.IO.Ports.SerialPort.GetPortNames () [0x00000] in <00000000000000000000000000000000>:0
at SerialTest.Start () [0x00000] in <00000000000000000000000000000000>:0

The code is as follows:

Code (CSharp):

1. void Start()
2.     {
3.         // Get a list of serial port names.
4.         string[] ports = { "" };
5.         try {
6.  
7.             ports = SerialPort.GetPortNames();
8.  
9.         } catch (Win32Exception w) {
10.             Debug.Log(w.Message);
11.             Debug.Log(w.ErrorCode.ToString());
12.             Debug.Log(w.NativeErrorCode.ToString());
13.             Debug.Log(w.StackTrace);
14.             Debug.Log(w.Source);
15.             System.Exception e = w.GetBaseException();
16.             Debug.Log(e.Message);
17.         }
18.  
19.         Debug.Log("The following serial ports were found:");
20.  
21.         // Display each port name to the console.
22.         foreach (string port in ports) {
23.             Debug.Log(port);
24.         }
25.         // end Debug
26.  
27.     }

It works fine in the editor and when using Mono as the backend. I know there are some scenarios that are not supported when using IL2CPP. Is SerialPort.GetPortNames known to be one of them?

I've tried this with Unity 2021.1 and 2021.2. The result is the same for both.

Thanks for any insights!

 

Hey Timke - thanks for that link. Somehow I missed that in my search. I'll see if everything else works with Mono for my project and use that if so.