.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

IIS Request Processing

Posted By: King     Posted Date: September 24, 2012    Points: 2   Category :ASP.Net
This articles explains in detail on how a request is being handled in Internet information Services. This gives the information on how a request is passthrough and how the response is obtained as the result from the web server.

View Complete Post

More Related Resource Links

HTTP Pipelines: Securely Implement Request Processing, Filtering, and Content Redirection with HTTP


ASP.NET is a flexible and extensible framework for server-side HTTP programming. While most people think of ASP.NET in terms of pages served, there is a lower-level infrastructure sitting beneath this page model. The underlying plumbing is based on a pipeline of app, module, and handler objects. Understanding how this pipeline works is key if you want to get the most out of ASP.NET as an HTTP server platform, while making your process more efficient, and keeping your server secure. This article introduces the architecture of the pipeline and shows how you can use it to add sophisticated functionality to an ASP.NET-based app.

Tim Ewald and Keith Brown

MSDN Magazine September 2002

there was an error processing the request


 Hi, I implement a project which has a ajax plus web service. It works out on IDE VS 2008 Express.

Now I host it on a free space, get an error "there was an error processing the request".

The error type is empty.

Any experience is thankful.

Articles/Links on Asp.Net pipeline and internal request processing architecture


I am looking details on the internal working of asp.net architecture. The topics need to include the following:

  1. Asp.Net Thread/Application Pools
  2. HttpRuntime
  3. HttpApplication - When and how it is set up
  4. How HttpContext is set up
  5. How objects can passed along the pipeline using HttpContext.Current.Items
  6. Why does modification of static variables requires locks in ASP.NET (advanced)
  7. IIS 7 Integration Mode

I'm looking for a very detailed description of Asp.Net internals and how request processing happens under the hood.



Dear gentlemen and ladies of the Microsoft Dynamic Data Team,

Mr. Steve Naughton says (and I hope so) that there might be chances that you read the posts published in this forum: I really hope so.

If that were the case then I am formally requesting to you in providing a "real answer" to my question:

I want to customize a dynamic data page (the details one) so I can have access to the data it has been already gathered from the end user UI (details.aspx) and use it to pass this same data to the following controls/pages that I am going to display next time to the end user.

For instance:

I have a screen with different types of data in it: texts, numbers, dates, check boxes, radio buttons and dropdownlists that has been filled with data by the end user. I want now to reset all fields exept the dropdownlist of which I'd like to keep the previously chosen values(the very same thing you do between dropdownlist of List.aspx ad Details.aspx). Even with FoxPro I could do that because data and controls were available there. It was as simple as setting carrying on to true.


I have found my

view state vs request parameters


If  the view state is the data entered into the form fields then they are supposed to be available in the request parameters or request body. Then why would we need view state for?


how to impose javascript event processing?


If I have some form control like textbox and I want the event handler to be located in the html instead of at the server side, how to do that? Of course I can copy paste javascript code in the aspx file. But is it possible to do that using some object oriented approach (ie programmatically in the code behind)?


Unique ID throughout entire request



I am hoping somene here could advise me on a better solution to my present problem.  First a little background information on the application. 

I have a web application using the 3.5 framework.  The structure of this application is as follows: UI -> WebService   -> Business Layer -> DataAccess Layer.   What I want to accomplish is for every request (click on a link or button) have a unique identifer that follows this request through its entire lifecycle.  This unique identifer can be accessible anywhere within this request.  We use Response.Redirects which could easily be changed to Server.Transfers (although I do not want to do that) but  the problem lies with the web service calls.  Currently, a GUID is set in the ApplicationRequest.  This GUID checks for a guid value in the RawURL and if so, assigns this value to a HttpContext Item.  If not, HttpContext.Items gets a new one created.  However, this idea is wrong and will need to be revisisted.  The bigger problem is with the web service calls.  Without changing every web service method signature, and every call for that matter, is there a way of getting this GUID there.  I created a web method in every web service so that each time I instantiate a web service object in the UI, before calling any

System.Security.SecurityException: Request for the permission of type 'System.Web.AspNetHostingPerm


Good Day all,

Having an issue with an outside user accessing my IIS7 box. I do not have this problem when running the website from my host machine. I found this post: Http://forums.asp.net/t/1371394.aspx. I assure you that this is not a solution because I am not storing any of my files on a network share. 

What do you think my approach should be. 

I already have read rights to IIS user to my BIN folder. 

Thanks for the help. 

IIS request filtering module


Hi folks,

I have migrated my web application to iis 7.5 Now I am using windows 7 as dev machine.

the problem is it takes several seconds to download a single page into web browser now. It contains only 300 records.

Everything is ok on prod website though. Prod version contains up to 200000 records .I can't also use code profile tool of red gate to analyze possible bottlenecks since the software in question can't restart IIS. No errors in IIS logs. I am using ISAPI Rewrite 3 filter by Helicon to apply some URL rewriting rules. I am thinking about conflict between ISAPI rewriting rules and default IIS 7.5 request filtering rules, since the IIS request filtering module gets a higher priority than even the built-in IIS 7.5 rewriter module. Is it possible to tweak the module through web.config so that priority is given to ISAPI rewriting rules or something like that?

Frankly, I spent several days to figure out solution. No success...

I've also deployed the application on IIS 5.1. Everything works fine. Any ideas about possible solution for IIS 7.5?

How to implement custom HttpContext for each request under class that implements IHTTPHandler


Hello All,

I created an application and implemented IHTTPHandler for all incoming request ending with ".aspx" extension.

Under "ProcessRequest" module, I am creating an instance of HttpContext (with URL attributes different from my application's URL i.e. if I am working on localhost then speciying Yahoo.com as its URL) and assigning it to "context" which comes as method argument.

After redirection, an error is generated. Also, the custom HTTPContext is not passed to the requested page (default.aspx, in my case.)

Code is as follows.

    Public Sub ProcessRequest(ByVal context As System.Web.HttpContext) Implements System.Web.IHttpHandler.ProcessRequest
            Dim requestedUrl As String
            Dim targetUrl As String
            Dim urlLength As Integer
            'Save settings which will be used while redirecting to appropriate page
            requestedUrl = context.Request.RawUrl
            If requestedUrl.IndexOf("?") >= 0 Then
                targetUrl = requestedUrl.Substring(0, requestedUrl.IndexOf("?"))
                targetUrl = requestedUrl
            End If
            If targetUrl = Nothing Or targetUrl.Length = 0 Then
                targetUrl = requestedUrl
            End If

Image processing, determine white space and crop



I have created a image upload for our ID card system to allow users to upload new images, edit them and submit for approval.  This is all working well with a combination of asp.net (c#) and jquery to give a seemless editor etc.

We have had a few users who I cannot believe have scanned a photo of themself and then just submitted it with the A4 page of white and little photo.

I am wondering if anyone can help with a suggestion on how I could possibly reduce the load of these coming through (I can't believe they can be this stupid), it stipulates UK passport standards.

Would my only option be to check for a single continues colour that occurs and if it reaches a certain percentage point say 60% then to just send back an error stating they need to crop the image.

Can anyone help with providing sample or that I can use to move this one on.

I am still in disbelief on this one.  the other one is they take a photo of whole body and other in it and cut straight down middle chopping the people out but supplying a photo that no use for an id photo card....but that I can't imagine being solved programatically as I need to determine where their face dimensions are and what percentage of the actual photo is taken up by it and if it below a threshold reject it.

Easy image processing(grayscale, sepia, negative, resize, brightness, contrast and opacity)

Howdie y'all,

I see a lot of questions in this forum about resizing images. Recently I created a code sample(with downloadable webapp), right here.

The class (downloaded or created) allows for very fast and easy processing of your images. And a lot of problems over here can be solved by simply using that class. I thought it might help to mention the code sample in this forum as well.



Test Run: Web Application HTTP Request-Response Test Automation with JavaScript


Write a simple browser-based request-response test automation using JavaScript that's platform independent and useful when you are working in a highly dynamic environment.

James McCaffrey

MSDN Magazine January 2010

Test Run: Request-Response Testing With F#


This month we show you how to use F# to perform HTTP request-response testing for ASP.NET Web applications.

James McCaffrey

MSDN Magazine July 2009

Peer Fun: A Peer-To-Peer Work Processing App With WCF


We demonstrate creating a peer-to-peer processing platform where multiple players function together for a common purpose: getting your work done.

Matt Neely

MSDN Magazine June 2009

CLR Inside Out: Unhandled Exception Processing In The CLR


In this installment of CLR Inside Out Gaurav Khanna explains everything you need to know about unhandled exception processing in the .NET Framework.

Gaurav Khanna

MSDN Magazine September 2008

Test Run: Request/Response Testing with Windows PowerShell


Did you know you can use Windows PowerShell to perform lightweight request/response testing for an ASP.NET Web app? Here's how.

Dr. James McCaffrey

MSDN Magazine May 2008

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend