HttpHandlers / Modules :: Trying To Write An HttpModule That Will Work In IIS7 With Integrated Pipeline Mode AppPool?
Jan 2, 2011
am trying to write an HttpModule that will work in IIS7 with integrated pipeline mode AppPool. Within this module I need to access Session variables and to be able to capture the Session Start and End events. I have found a couple of articles on this topic that indicate the need to modify the behavior of the HttpHandler in PostAcquireRequestState to force the Session for the context to be initialized. The article I am using as a template is posted here:[URL]In my case I am getting the following error:
[NullReferenceException: Object reference not set to an instance of an object.] System.Web.PipelineModuleStepContainer.GetEventCount(RequestNotification notification, Boolean isPostEvent) +30 System.Web.PipelineStepManager.ResumeSteps(Exception error) +1112
System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) +113 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +616
I believe that this error implies a problem with attempting to attach an event handler multiple times. I am aware that the modules Init function can be called more than once and have set a static initialization flag which ensures that I will only ever attach the event handler once.In the most condensed form my code is as follows:
public class HttpModule : IHttpModule, IRequiresSessionState
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Jul 27, 2010
In IIS6 the scenario below is working perfectly.I have an HttpModule called URLRedirect which examines URLS and by using RegEx rewrites of applicable. An example is a URL "/doc47.pdf" gets redirected to docpdf.ashx?id=47 Then the docpdf.ashx used the id value and, using a database builds an application/pdf document and returns it. Since I need to validate that the user has access to the data, the first line of the ProcessRequest(HttpContext context) function is:if (context.User.Identity.IsAuthenticated) ..... This is where the problem occurs, but more details first.
On a webpage, access to which is restricted to lgged on users who meet certain criteria there is a link which allows the user to present the page as a PDF document. This is achieved by using javascript to open a popup window using the window.open("/doc47.pdf", ... ) function.This all works fine under IIS6 and under IIS7 if I change the mode to Classic. But, under IIS7 in integrated mode, the following happens.The line in doc.ashx described above raises an exception because context.User == null. But, and this is interesting, if instead of using the link that opens the popup window I instead type /doc.pdf?id=47 into the address bar, the PDF document displays correctly.So this indicates to me that the URLRedirect Module is somehow losing the logged on user information.
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Sep 20, 2010
we are running a complex 64-bit ASP.NET 2.0 application on W2008 R2 Standard and stress tests done with VS2008 Team System have indicated that integrated pipeline mode is 30% slower than classic mode.
We have compared the application traces extensively and it appears that integrated mode is uniformly slower than classic. That is, there is no single point that causes delays in integrated mode.
This is quite the opposite to everything Microsoft says about the integrated pipeline, so it might be that there is something quite wrong with the configuration of the integrated mode or the server. But we have not found any settings that would have any effect on this. Some complaints that Sharepoint and reporting services are slower in integrated mode can be found, but our application does not use them so this is quite likely unrelated.
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Jan 19, 2011
Firstly there's a great overview of the IIS7 HTTP request lifecycle and various settings that affect performance here:
ASP.NET Thread Usage on IIS 7.0 and 6.0
Very specifically though, in dotNet 4 the defaults for maxConcurrentRequestsPerCPU and requestsQueueLimit are set to 5000. E.g. equivalent to: (in aspnet.config):[code]....
Seems to me that on a multi-CPU/core server the requestQueueLimit here will always be invoked well berfore the 'perCPU' limit. Thus, if a max of 5000 requests per CPU is what you actually want then I would expect that the requestQueueLimit needs to be increased to 5000 * CPUCount or just disabled altogether.
Is my interpretation correct? If so can I disable requestQueueLimit? (set it to zero?). The documentation on this setting doesn't appear to address this question (so maybe I'm missing something or misreading?)
** side note from the above article: The requestQueueLimit is poorly named. It actually limits the maximum number of requests that can be serviced by ASP.NET concurrently. This includes both requests that are queued and requests that are executing. If the "Requests Current" performance counter exceeds requestQueueLimit, new incoming requests will be rejected with a 503 status code)
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May 3, 2010
I am looking for code to upload to a shared web host that will return whether or not the web site is running in integrated pipeline mode.
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Dec 14, 2010
I am using the following code for URL RewritePath
[code]....
but its giving the following error
CurrentNotification = 'System.Web.HttpContext.Current.CurrentNotification' threw an exception of type 'System.PlatformNotSupportedException'
base {System.NotSupportedException} = {"This operation requires IIS integrated pipeline mode."}
}
}
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May 3, 2010
Is it possible to check if our code is executing in Integrated Pipeline Mode or not?
There are some ASP.NET class properties that only work in Integrated Pipeline Mode, and I want to avoid raising an exception if there is a way to test if our code is executing in that environment or not.
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Aug 16, 2010
I try to install IIS 7 on my Win 7, whenever I check . Net Extensibility . AsP .net under Application Development Feature and run http://localhost I get http error 500.24. An asp .net setting has been detected that does not apply in Integrated managed pipeLine mode
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Jan 24, 2010
I have written simple http module just to print Hello. but it is not working.
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May 7, 2015
I am trying to export crystal report to pdf in asp.net, though the code is working well on localhost but on server I get error
HTTP Error 500.23 - Internal Server ErrorAn ASP.Net setting detected that does not apply in Integrated managed pipeline mode.
The crystal report is showing abnormal behaviors.I am using a CrystalReportViewer on which i have set the CrystalReportSource1 using the viewer Tasks.
The code on page load is :-
cn.Open();
DataSet ds = new DataSet();
string sql = "select * from Test";
OleDbDataAdapter da = new OleDbDataAdapter(sql, cn);
da.Fill(ds);
[Code].....
During the troubleshooting i encountered another unusual issue, where i tried a new crystal report with just simple report. That simple crystal report is not showing data & the toolbar images are not rendered. I googled on this but didn't found conclusive thing.
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May 12, 2010
I just updated my project to ASP.NET 4. All of a sudden, some of my HttpHandlers are giving ValidateRequest errors. This is because the user HAS to be able to put an XML string in the querystring.I know how to disable ValidateRequest on a page, but how do I do it on an HTTPHandler?
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Feb 15, 2010
I am trying to access the page object in module and change the hyper links urls. Page object is being access properly, but changes I am making are not effecting the output. I mean here I am changing the url to TestURL.aspx, but this is not comming. could
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Jan 23, 2010
as subject, how can i read Response Headers inside an httpmodule?
i need the "Content-encoding" header value.
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Oct 7, 2010
regarding one issue I am facing. I created a httpmodule for hadling the unhandled errors and I need to log those errors using log 4 net in database.Everting working fine but I am not getting any error information once the error was hadled and I need that info too. I want to make it as a centralize module which can trap all errors and log those errors.How call application_error event of httpmodule from catch block...so that I can log that info there and I no need log in every catch block..
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May 19, 2010
Our code relies on checking the Context.User.Identity value in the Global.asax Application AuthenticateRequest(...) method to retrieve some information about the logged in user. This works fine in classic mode but when I flip IIS to use the Integrated Pipeline "Context.User" comes back as null, but only intermittently.I have < authentication mode="Windows"> and only Windows Auth enabled in the Virtual Directory.
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Dec 8, 2010
I fill a third-pard component variable in Global.Application_BeginRequest(). Everything is fine until I set IIS7 into the Integrated mode. In that case the method Application_BeginRequest() is not called (Application_Start is ok).May be some module is registered wrong?(I have found a same problem here on forum, but without a solution:[URL]
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Sep 16, 2010
I just switched from Classic Mode to Integrated Mode and now HttpContext doesn't seem to exist in my ASP.NET application. I can't even add a Watch to HttpContext nor to HttpContext.Current.
I'm using FluorineFX where in the Web.config a HttpModule is defined. Apparently, in IIS7 Integrated Mode, these HttpModules need to be added to the Modules section in System.WebServer. I have done this, but now I'm having this HttpContext problem...
Code is in a simple service class being called by Flex (amf).
if (HttpContext.Current.User.Identity != null)
{
...
Web.Config (I don't know how to display this properly in Stack...):
<?xml version="1.0" encoding="utf-8" ?>
[Code]....
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Jan 16, 2011
.ashx file is working perfectly in visual studio iis but when hosted it is not working
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Oct 4, 2010
I have a problem with large respones and IIS7, the server runs out of memory. I've written the test code below that works pretty much like my real code... When i start to download the file i can se the memory usage rise until it hits 100% and Firefox complaints about lost connection to server, looks like IIS7 does not release cache or something.. Works in IIS6 by the way
[Code]....
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Feb 7, 2010
I am trying to get a asp.net 4.0 beta 2. website running that is working on my dev machine, but not when I published to my server. Where I get the HTTP 500.22 error when using the 4.0 as application pool and "Integrated" in "Managed Pipeline Mode".
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Oct 17, 2010
This seems as good a place as any for this question. It has to do with an .ASHX handler.
I have written a generic file serving handler in asp.net/vb.net - it has been working great. I recently moved to a windows 7 box and am now debugging under IIS7, and this is where the problems occure.
Whenever I serve a file to either FireFox or Chrome (IE8 works fine) from IIS 7, the download will fail.
- In FireFox the error is "[some file name and path].part could not be saved, because the source file could not be read."
- In Chrome the error is "Error 330 (net::ERR_CONTENT_DECODING_FAILED): Unknown error."
- In IE8 it works fine
If I run the same code in IIS6, it works fine. If I run the same code in the Visual Studio virtual web server, it works fine (on windows 7 or XP).
I am rather concerned about this as our production web server will soon be IIS7; which I'm starting to really love, and would hate to revert to IIS6 just because this won't work in IIS7.
Here is the code I'm using..I've tried a number of different patterns. It seems to always fail on the Flush() line with the error "System.Web.HttpException = {"The remote host closed the connection. The error code is 0x80070040."}"
One thing I have noticed, if I move the flush statment to the finally clause or remove it all together; firefox will attempt to read the entire file - it appears to be looping through the entire block of code just fine, until it hits the flush statement. If I remove the flush statment I still get an error and it still tries to read the entire file before asking me to save it.
--Edit: I removed the flush and tested again; firfox thinks it downloaded a zero byte file.
I'm assuming I just have some sort of header issue going on here, but I'm at a loss at this point as to what that would be.
[Code]....
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Aug 26, 2010
i wanted find find out a way to re-write the url in my asp.net site,for example i have a page call "SearchResultsByModel.aspx" and when it comes to the query string on this page its like bellow
http://localhost:1089/fidobuzz/SearchResultsByModel.aspx?cat=0&type=Convertible
what i want to do is i want to re-write this url in to
http://localhost:1089/fidobuzz/Convertible
is that possible ? i'am being trying so hard to do this ,but i could not find out a way to do this ,
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Jan 27, 2011
We're trying to implement functionality that intercepts, inspects, and alters if needed data in the Request.QueryString and Request.Form collections.
Since Request.QueryString and Request.Form are readonly, is it possible to use a HttpModule to do this without Reflection or Response.Redirect?
We're thinking that we can construct a new HttpRequest, and replace the original one. Would there be any implications in doing this?
I know mocking this object is impossible without using HttpRequestWrapper, but wasn't sure whether ASP.NET sets other things beyond the constructor.
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Mar 31, 2010
I've tried to implement two different solutions that use either and HttpModule or and HttpHandler to do URLRewriting for me. These work great on IIS 7 within my local development environment in Integrated and Classic modes. Currently the production server is running IIS 6.0 on a shared hosting environment. It appears that the request at least hits both the Module and Handler as the URL above redirect to the particular friendly url, but it doesn't redirect and hit hte Module or Handler again. Instead I get a 404 error for the friendly URL.
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Jun 30, 2010
I have an existing ASP.NET application and there is a requirement in which i need to use ASP.NET MVC in that.
So altogether i need to mixing ASP.NET Webforms and ASP.NET MVC I am following an article [URL] I am done with all the steps. But its not working as expected.
[Code]....
When ever i add this to the web.config i am getting error. HTTP Error 500.22 - Internal Server Error An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode. ERROR CODE: 0x80070032 My OS is Vista Enterprise Edition.
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