How to timeout a request in ASP.net MVC web api - asp.net-mvc

Question

My application is running ASP.Net MVC 5.2.2 and hosted on the IIS 7 integrated pipeline. I am looking to timeout requests when the duration of the request is over 3 minutes. Setting the httpRuntime.executionTimeout does not help.
I have other ASP.Net applications running in IIS 6 classic mode. Asp.Net automatically throws a ThreadAbortException when the request duration exceeds the httpRuntime.executionTimeout value.
I tried to look into the ASP.Net source code and found RequestTimeoutManager. It basically keeps track of all the HttpRequests initialized and a background task aborts the requests exceeding the time out duration. Is RequestTimeoutManager applicable for ASP.Net MVC Web Api? If not how can something similar be implemented.
Stack Trace for a typical Http Request in my application
at MyApp.Api.Controllers.Controller.GetDetails(String Id)
at lambda_method(Closure , Object , Object[] )
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass13.<GetExecutor>b__c(Object instance, Object[] methodParameters)
at System.Threading.Tasks.TaskHelpers.RunSynchronously[TResult](Func`1 func, CancellationToken cancellationToken)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
at System.Web.Http.Controllers.ApiControllerActionInvoker.<>c__DisplayClass3.<InvokeActionAsync>b__0()
at System.Threading.Tasks.TaskHelpers.RunSynchronously[TResult](Func`1 func, CancellationToken cancellationToken)
at System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsync(HttpActionContext actionContext, CancellationToken cancellationToken)
at System.Web.Http.Filters.ActionFilterAttribute.System.Web.Http.Filters.IActionFilter.ExecuteActionFilterAsync(HttpActionContext actionContext, CancellationToken cancellationToken, Func`1 continuation)
at System.Web.Http.Filters.ActionFilterAttribute.System.Web.Http.Filters.IActionFilter.ExecuteActionFilterAsync(HttpActionContext actionContext, CancellationToken cancellationToken, Func`1 continuation)
at System.Threading.Tasks.TaskHelpersExtensions.ThenImpl[TTask,TOuterResult](TTask task, Func`2 continuation, CancellationToken cancellationToken, Boolean runSynchronously)
at System.Threading.Tasks.TaskHelpersExtensions.Then[TOuterResult](Task task, Func`1 continuation, CancellationToken cancellationToken, Boolean runSynchronously)
at System.Web.Http.ApiController.<>c__DisplayClass3.<ExecuteAsync>b__0()
at System.Web.Http.Filters.AuthorizationFilterAttribute.System.Web.Http.Filters.IAuthorizationFilter.ExecuteAuthorizationFilterAsync(HttpActionContext actionContext, CancellationToken cancellationToken, Func`1 continuation)
at System.Web.Http.ApiController.ExecuteAsync(HttpControllerContext controllerContext, CancellationToken cancellationToken)
at System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncInternal(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.Dispatcher.HttpRoutingDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at MyApp.Common.MyAppExceptionHandler.<>n__0(HttpRequestMessage request, CancellationToken cancellationToken)
at MyApp.Common.MyAppExceptionHandler.<SendAsync>d__1.MoveNext() in C:\MyApp_source\Components\MyAppExceptionHandler.cs
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
at MyApp.Common.MyAppExceptionHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.HttpServer.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Web.Http.WebHost.HttpControllerHandler.BeginProcessRequest(HttpContextBase httpContextBase, AsyncCallback callback, Object state)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
at System.Web.HttpApplication.PipelineStepManager.ResumeSteps(Exception error)
at System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb)
at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
at System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion(IntPtr pHandler, RequestNotificationStatus& notificationStatus)
at System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion(IntPtr pHandler, RequestNotificationStatus& notificationStatus)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)

Answer 1

You can use Custom attribute to override timeout value in AsyncManager
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public class CustomAsyncTimeoutAttribute : ActionFilterAttribute
{
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (filterContext == null)
{
throw new ArgumentNullException(nameof(filterContext));
}
if (!(filterContext.Controller is IAsyncManagerContainer managerContainer))
{
throw new InvalidOperationException("Action Filter failed");
}
managerContainer.AsyncManager.Timeout = 180000;
base.OnActionExecuting(filterContext);
}
}
Or why can't you use [AsyncTimeout(180000)] ?

Answer 2

You can create a race between 2 running tasks, one for the main operation, and another for preferred timeout (e.g 3 * 60,000 ms = 180,000 ms) by the following code :
public async Task<HttpResponseMessage> Get()
{
var _task = this.DoTask(2000); //your operation required time
var _timeout = this.SetTimeout(180000); //equal to 3 minutes
var _finishedTask = await Task.WhenAny(_timeout, _task);
if (_finishedTask == _timeout)
return this.Request.CreateResponse(HttpStatusCode.RequestTimeout); //timeout
else
return this.Request.CreateResponse(HttpStatusCode.OK, _task.Result); //Ok
}
private async Task<string> DoTask(int duration)
{
await Task.Delay(duration);
return "work results";
}
private async Task SetTimeout(int ms)
{
await Task.Delay(ms);
}
I have tested with ApiController as base class and works fine. The task which is finished earlier win the race and determines the Api result.