SimpleAsyncControllerFactory.cs

using System;
using System.Web.Mvc;
using System.Web.Mvc.Async;

public class SimpleAsyncControllerFactory : TurbineControllerFactory {
	public SimpleAsyncControllerFactory(IServiceLocator locator) : base(locator) {
	}

	protected override IController GetControllerInstance(System.Web.Routing.RequestContext requestContext, Type controllerType) {
	    if (controllerType == null) {
		// this will make sure that the MVC framework throws the corresponding
		// exception for a non-registered controller
		return base.GetControllerInstance(requestContext, controllerType);
	    }

	    var instance = ServiceLocator.Resolve<IController>(controllerType);
	    var controller = instance as Controller;

	    // If you inherit from controller, implement this fine work around
	    if (controller != null && !controller.IsType<IAsyncController>()) {
		controller.ActionInvoker = GetActionInvoker();
	    }

	    return controller;
	}
}