PlatformNotSupportedException

[hedihadi]

hello, i'm using .NET 6.0 on Windows 10, when i call this function

        private async void Form1_Load(object sender, EventArgs e)
        {
            socketConnectionChanged(false);
            socketio= new SocketIO("http://192.168.0.107:5000");
            socketio.OnConnected += async (sender, e) =>
            {
                socketConnectionChanged(true);
            };
            socketio.OnDisconnected += async (sender, e) =>
            {
                socketConnectionChanged(false);
            };
            await socketio.ConnectAsync();

in the following line

await socketio.ConnectAsync();

i get this error

System.PlatformNotSupportedException: 'Operation is not supported on this platform.'

this is the details

System.PlatformNotSupportedException
  HResult=0x80131539
  Message=Operation is not supported on this platform.
  Source=System.Private.CoreLib
  StackTrace:
   at System.Action`1.BeginInvoke(T obj, AsyncCallback callback, Object object)
   at WebSocketSharp.WebSocket.open()
   at WebSocketSharp.WebSocket.Connect()
   at SocketIOClient.NetFx.WebSocketClient.WebSocketSharpClient.<ConnectAsync>d__10.MoveNext()
   at SocketIOClient.SocketIO.<ConnectCoreAsync>d__88.MoveNext()
   at SocketIOClient.SocketIO.<ConnectAsync>d__87.MoveNext()
   at HeatFusion.Form1.<Form1_Load>d__5.MoveNext() in C:\Users\Hedi\source\repos\HeatFusion\HeatFusion\Form1.cs:line 209

i'm a python/flutter/javascript developer, i recently went into C# so i honestly have no idea what's going on, i'd appreciate some help on this.

[hedihadi]

i did some more test, when the socketio server is offline, i get the following error instead

SocketIOClient.Exceptions.ConnectException: 'Timeout, please see innerException.'

inner exception:
WebSocketException: Unable to connect to the remote server.

[LevyShang]

use .net framework or .net standard