Accidently Sending Multiple Messages with SignalR
===

I'm new to SignalR but I understand the concept.



My goal is to expose web services which when called will update all connected clients. I've built a little knockout js to connect to the hub and that works well. When I click my start button it sends a message to each of the clients connected like it is supposed to. Here is the code for a background. 

Hub:

    [HubName("realTimeData")]
    public class RealTimeDataHub : Hub
    {
        public void UpdateFlash(string message)
        {
            Clients.flashUpdated(message);
        }
        public void clear()
        {
            Clients.cleared();
        }
    }

JS:

    function viewModel(){
        var self = this;

        self.messages = ko.observableArray([]);

        self.hub = $.connection.realTimeData;

        self.hub.flashUpdated = function (m) {
            self.messages.push(new message(m));
        };
        self.hub.cleared = function () {
            self.messages.removeAll();
        };
        self.Start = function () {          
            self.hub.updateFlash("Updated Flashed from client");
        };
        self.Stop = function () {
            self.hub.clear();
        };
        $.connection.hub.start();
    }
    
    ko.applyBindings(new viewModel());


MVC API:

    public class HomeController : Controller
    {
        public ActionResult Update()
        {
            GetClients().updateFlash("From server");

            return Json(new { result = "ok" }, JsonRequestBehavior.AllowGet);
        }

        private static dynamic GetClients()
        {
            return GlobalHost.ConnectionManager.GetHubContext<RealTimeData.Hubs.RealTimeDataHub>().Clients;
        }
    }


The problem: 

When I call the "Update" method from my controller (Home/Update, not a real API yet) it sends one signal for each of the clients connected. So if I have 2 clients connected, I will get 2 "From Server" messages to each client and so on. I would only like the one...

Any suggestions? Anything is appreciated 

Thanks, 

Matt