RT state managment and rectangle support

dotnet/AipsRT/Hubs/TestHub.cs

@@ -1,9 +1,19 @@
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace AipsRT.Hubs;
 
+[Authorize]
 public class TestHub : Hub
 {
+    public override async Task OnConnectedAsync()
+    {
+        Console.WriteLine($"LOOOOOOOOOG: [{Context.UserIdentifier}] User identifier connected");
+        Console.WriteLine($"LOOOOOG222: [{Context.User?.Identity?.Name}] User identity name connected");
+        
+        await base.OnConnectedAsync();
+    }
+
     public async Task SendText(string text)
     {
         await Clients.All.SendAsync("ReceiveText", text);