IIS 7 UrlReferrer exception throws

Question

When I get the referrer URL, IIS 7 throws an exception. My code is:

var referrer = Request.UrlReferrer == null ? null : Request.UrlReferrer.AbsoluteUri; 

The application throws an ArgumentException error message with an error message,

"The value is not in the expected range."

IIS 6 has no problems.

This exception occurs when a page is moved using "Response.Redirect"

On the main page of the application there is a Response.Redirect method in accordance with the role of the current user. This exception has been selected on the user's homepage.

How to get the Referrer URL in IIS 7.

Thanks,

Answer 1

When trying to access the request object from the System.Threading.Task object that was launched in processing the request, a similar problem occurred. I use a task to reduce response time - in my case, most of the processing can be done after sending the request. That is, I had something like:

 public ActionResult SomeAction() { new System.Threading.Task(() => { // here I used this.Request.UrlReferrer and got weird ArgumenException error }).Start(); return someActionResultThatDoesntRequireProcessing; } 

I pulled UrlReferrer (and other this.Request.stuff that I needed) in the delayed processing) into a separate "close" variable (I selected them to have the most basic types):

 public ActionResult SomeAction() { var urlReferrerAbs = this.Request.UrlReferrer.AbsoluteUri; var clientAddress = this.Request.UserHostAddress; // save other stuff from the request object new System.Threading.Task(() => { // here I used urlReferrerAbs instead of this.Request.UrlReferrer and the error has gone! }).Start(); return someActionResultThatDoesntRequireProcessing; } 

It worked for me.