Change to use int options instead of boolean

Author: wezz

README.md

@@ -152,7 +152,7 @@ If the `bufferSize` is set to `0`, the `threshold` value will be ignored, and ev
 
 **LogWithHostname**: Set to `true` to include hostname in the log. Useful in a multisite environment with several hostnames/domains. Default is `false`
 
-**Handle410**: Set to `true` to handle redirect for expired pages in Optimizely.
+**ActiveStatusCodes**: A integerlist with the status codes that NotFoundHandler will be active on. (Ex. ```options.ActiveStatusCodes = new int[] { StatusCodes.Status404NotFound, StatusCodes.Status410Gone };```)
 
 ### Specifying ignored resources
 

src/Geta.NotFoundHandler/Core/RequestHandler.cs

@@ -44,9 +44,9 @@ public virtual void Handle(HttpContext context)
                 return;
             }
 
-            if (context.Response.StatusCode != 404 && (_configuration.Handle410 && context.Response.StatusCode != 410))
+            if (context.Response.StatusCode != StatusCodes.Status404NotFound && (_configuration.ActiveStatusCodes.Any() && !_configuration.ActiveStatusCodes.Contains(context.Response.StatusCode)))
             {
-                LogDebug("Not a 404 or 410 response.", context);
+                LogDebug("Not a accepted statuscode.", context);
                 return;
             }
 

src/Geta.NotFoundHandler/Infrastructure/Configuration/NotFoundHandlerOptions.cs

@@ -6,6 +6,7 @@
 using Geta.NotFoundHandler.Core;
 using Geta.NotFoundHandler.Core.Suggestions;
 using Geta.NotFoundHandler.Core.Redirects;
+using Microsoft.AspNetCore.Http;
 
 namespace Geta.NotFoundHandler.Infrastructure.Configuration
 {
@@ -20,7 +21,7 @@ public class NotFoundHandlerOptions
         public bool UseInternalScheduler { get; set; }
         public string InternalSchedulerCronInterval { get; set; } = "0 0 * * *";
         public FileNotFoundMode HandlerMode { get; set; } = FileNotFoundMode.On;
-        public bool Handle410 { get; set; } = false;
+        public int[] ActiveStatusCodes { get; set; } = new int[] { StatusCodes.Status404NotFound };
         public TimeSpan RegexTimeout { get; set; } = TimeSpan.FromMilliseconds(100);
 
         public string[] IgnoredResourceExtensions { get; set; } =