eShopOnContainers/src/Services/Ordering/Ordering.SignalrHub/NotificationHub.cs

using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.SignalR;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Ordering.SignalrHub
{
    [Authorize]
    public class NotificationsHub : Hub
    {

        public override async Task OnConnectedAsync()
        {
            await Groups.AddToGroupAsync(Context.ConnectionId, Context.User.Identity.Name);
            await base.OnConnectedAsync();
        }

        public override async Task OnDisconnectedAsync(Exception ex)
        {
            await Groups.AddToGroupAsync(Context.ConnectionId, Context.User.Identity.Name);
            await base.OnDisconnectedAsync(ex);
        }
    }
}