cms_thermo_active/Step/Controllers/SignalR/NcHub.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.AspNet.SignalR;

namespace Step.Controllers.SignalR
{
    public class NcHub : Hub
    {
        public static List<string> ConnectedClients = new List<string>();
        public static bool NewConnectedClients = false;

        public override Task OnConnected()
        {
            Groups.Add(Context.ConnectionId, "ncData");
            NewConnectedClients = true;
            ConnectedClients.Add(Context.ConnectionId);

            return base.OnConnected();
        }

        public override Task OnDisconnected(bool stopCalled)
        {
            Groups.Remove(Context.ConnectionId, "ncData");
            ConnectedClients.Remove(Context.ConnectionId);

            return base.OnDisconnected(stopCalled);
        }
    }
}