Debug signalr

Shogi.Api/appsettings.json

@@ -8,9 +8,9 @@
 			"Microsoft": "Warning",
 			"Microsoft.Hosting.Lifetime": "Error",
 			"Microsoft.AspNetCore.HttpLogging.HttpLoggingMiddleware": "Information",
-			"System.Net.Http.HttpClient": "Error"
-			//"Microsoft.AspNetCore.SignalR": "Debug",
-			//"Microsoft.AspNetCore.Http.Connections": "Debug"
+			"System.Net.Http.HttpClient": "Error",
+			"Microsoft.AspNetCore.SignalR": "Debug",
+			"Microsoft.AspNetCore.Http.Connections": "Debug"
 		}
 	},
 	"ApiKeys": {

Shogi.UI/Shared/GameHubNode.cs

@@ -23,6 +23,19 @@ public class GameHubNode : IAsyncDisposable
 				options.Transports = Microsoft.AspNetCore.Http.Connections.HttpTransportType.WebSockets;
 			})
 		.Build();
+
+		this.hubConnection.Closed += this.HubConnection_Closed;
+	}
+
+	private Task HubConnection_Closed(Exception? arg)
+	{
+		Console.WriteLine("SignalR connection closed");
+		if (arg != null)
+		{
+			Console.WriteLine("Because {0}", arg.Message);
+		}
+
+		return Task.CompletedTask;
 	}
 
 	public bool IsConnected => this.hubConnection.State == HubConnectionState.Connected;