sql-server-samples/samples/manage/azure-sql-db-elastic-pools-custom-dashboard/Contoso ShopKeeper/MonitoringWebApp/Startup.cs

using Microsoft.Owin;
using Owin;
using Owin.WebSocket.Extensions;

[assembly: OwinStartupAttribute(typeof(MonitoringWebApp.Startup))]
namespace MonitoringWebApp
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            app.MapWebSocketRoute<MyWebSocket>("/ws");
            ConfigureAuth(app);
        }
    }
}