HomeController.cs

public class HomeController : Controller {

    public async Task<ActionResult> Index() {

        HttpClient client = new HttpClient();
        var result = await client.GetAsync("http://webapiasync.tugberk.me/api/cars");
        doWork();

        return View();
    }

    public void doWork() {

        //Not null, runs perfectly fine
        var httpCtx = System.Web.HttpContext.Current;
        Trace.TraceInformation("doWork is running...");
    }
}