public ActionResult Disconnect(string sessionId, string userId)
{
var hubContext = GlobalHost.ConnectionManager.GetHubContext <SessionHub>();
hubContext.Clients.Client(sessionId).disconnect(sessionId);
if (MvcApplication.Sessions.Any(x => x.Value == userId))
{
var session = MvcApplication.Sessions.First(x => x.Value == userId);
MvcApplication.AddSessionToDeleted(session.Key);
}
return(RedirectToAction("Index"));
}