periodically sending messages to all clients using signalr

Question

I want to send some data from server to all connected clients using hubs after a specific interval. How can I accomplish this using signalr hubs.

Answer 1

Spin up the System.Threading.Timer, and from it's callback broadcast the message using specific hub.

Global.asax:

private Timer timer;
public class Global : System.Web.HttpApplication
{
    protected void Application_Start(object sender, EventArgs e)
    {
        RouteTable.Routes.MapHubs("~/signalr2");
        timer = new Timer(TimerCallback(timerCallback), null, Timeout.Infinite, 1000);
    }
}

Check the “Broadcasting over a Hub from outside of a Hub” section in SignalR wiki page.

Answer 2

Use ReactiveExtensions and then setup an Observable.Interval call. Then reactive will automatically call the lambda which can broadcast to your clients.