eShopOnContainers/src/Services/Ordering/Ordering.API/Infrastructure/Hubs/NotificationsHub.cs

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

namespace Ordering.API.Infrastructure.Hubs
{
    [Authorize]
    public class NotificationsHub : Hub
    {

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

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