luticate2-api/Luticate2.Utils/Hubs/LuHub.cs

using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR;

namespace Luticate2.Utils.Hubs
{
    public class LuHub : Hub
    {
        private readonly LuHubConnectionTracker _connectionTracker;

        public LuHub(LuHubConnectionTracker connectionTracker)
        {
            _connectionTracker = connectionTracker;
        }

        public override Task OnConnected()
        {
            _connectionTracker.Add(this, Context.ConnectionId);
            return base.OnConnected();
        }

        public override Task OnDisconnected(bool stopCalled)
        {
            _connectionTracker.Remove(this, Context.ConnectionId);
            return base.OnDisconnected(stopCalled);
        }
    }
}