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Is there a way to find out the number of listeners (clients connected to a hub?) I'm trying to run/start a task if at least one client is connected, otherwise do not start it: [HubName("taskActionStatus")] public class TaskActionStatus : Hub, IDisconnect { static CancellationTokenSource tokenSource; public void GetTasksStatus(int? siteId) { tokenSource = new CancellationTokenSource(); CancellationToken ct = tokenSource.Token; ITaskRepository taskRepository = UnityContainerSetup.Container.Resolve<ITaskRepository>(); // init task for checking task statuses var tasksItem = new DownloadTaskItem(); taskRepository.GetTasksStatusAsync(siteId, tasksItem, ct); // subscribe to event [ listener ] tasksItem.Changed += new EventHandler<TaskEventArgs>(UpdateTasksStatus); } public void UpdateTasksStatus(object sender, TaskEventArgs e) { Clients.updateMessages(e.Tasks); } // when browsing away from page public Task Disconnect() { try { tokenSource.Cancel(); } catch (Exception) { // } return null; } } thanks

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