How to make IIS ignore 404 errors?
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Forum Name: ASP.NET Discussion
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URL: https://forums.webwiz.net/forum_posts.asp?TID=10530
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Topic: How to make IIS ignore 404 errors?
Posted By: Diep-Vriezer
Subject: How to make IIS ignore 404 errors?
Date Posted: 19 May 2004 at 7:24pm
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Hey all, I've made some HttpModules, which can handle stuff like this http://site.local/mypage.myfunnyextention - http://site.local/mypage.myfunnyextention and handle it like a special kind of shortcut. However, the 'page' doesn't really exists. Now, IIS raises a 404 error whenever it gets called, so is there a way to avoid all IIS errors, since I let ASP.NET handle them? EDIT: OMG, wait. I forgot to hand over all the extentions to ASP.NET ------------- Gone.. |
Replies:
Posted By: dpyers
Date Posted: 19 May 2004 at 7:44pm
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IIIRC, you have to ask your host to map the file extension to the asp.net dll. ------------- 
Lead me not into temptation... I know the short cut, follow me. |
Posted By: Diep-Vriezer
Date Posted: 19 May 2004 at 7:56pm
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I already added a wildcard to C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\aspnet_isapi.dl l, without the 'Verify that file exists' checkbox checked. ------------- Gone.. |
Posted By: dpyers
Date Posted: 19 May 2004 at 10:02pm
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Sorry, just reread your OP. I assume that if the page does exist, it gets handled by .net ok. I think IIS checks for the existence of the page before handing it off to aspnet_isapi.dll. If you can set up custom error pages on your host, you could route the 404's to an asp/aspx script for handling. -------------
Lead me not into temptation... I know the short cut, follow me. |
Posted By: pmormr
Date Posted: 19 May 2004 at 10:30pm
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as dp suggested... just set up a custom 404 error page that redirected to your ASP.NET handling page ------------- Paul A Morgan http://www.pmorganphoto.com/" rel="nofollow - http://www.pmorganphoto.com/ |
Posted By: Mart
Date Posted: 20 May 2004 at 2:55am
| Hmm strange, I use a similar system and it works perfect, I think your mapping to aspnet_isapi.dll wrong. |
Posted By: Diep-Vriezer
Date Posted: 20 May 2004 at 10:03am
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Fact is that I do not route stuff to an aspx page, but handle it with a HttpModule. I'm going to rewrite all the things, see if it works then. ------------- Gone.. |
Posted By: Diep-Vriezer
Date Posted: 20 May 2004 at 11:12am
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Alright, at least IIS leaves the handling to ASP.NET, FrontPage extentions didn't work if you handled over all extentions to ASP.NET, so I got rid of those useless things. Anyways, now ASP.NET raises a 404 error, and the HttpModule doesn't seem to do anything. ------------- Gone.. |
Posted By: Mart
Date Posted: 20 May 2004 at 11:23am
| Are you sure you registered it in your web.config file? |
Posted By: Diep-Vriezer
Date Posted: 20 May 2004 at 11:40am
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Yes. I added a text file with the name Default.dh, and the module handles it. It doesn't seems to handle stuff which isn't there, which means the module is only called whenever ASP.NET doesn't encounter errors. Is there a way to avoid this? Also, whenever I have a sub which is executed at the begin of the request, and peform this code HttpContext.Current.Response.ContentType = "text/html" HttpContext.Current.Response.Write("Request GUID = " & Guid.NewGuid.ToString & " <br><br>") It still displays the Default.dh file as a text file, rather than a HTML page. EDIT It might be the cache. ------------- Gone.. |
Posted By: Mart
Date Posted: 20 May 2004 at 12:05pm
| Can you paste in the <httpHandlers> node of your web.config file in |
Posted By: Diep-Vriezer
Date Posted: 20 May 2004 at 12:08pm
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<httpModules>
<add type="Root.Components.Security.HttpModule.HttpModule,den Heijer" name="HttpModule" />
</httpModules>
den Heijer.dll is the ouput -- Namespace Components.Security.HttpModule Public Class HttpModule Implements IHttpModule Public Sub Dispose() Implements System.Web.IHttpModule.Dispose End Sub Public Sub Init(ByVal context As System.Web.HttpApplication) Implements System.Web.IHttpModule.Init AddHandler context.BeginRequest, AddressOf Me.BeginRequest End Sub Private Sub BeginRequest(ByVal sender As Object, ByVal e As System.EventArgs)HttpContext.Current.Response.ContentType = "text/html" HttpContext.Current.Response.Write("Request GUID = " & Guid.NewGuid.ToString & " <br><br>") End Sub End ClassEnd Namespace------------- Gone.. |
Posted By: Mart
Date Posted: 20 May 2004 at 12:13pm
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Try this: <httpHandlers> <add verb="*" path="*.dh" type="Root.Components.Security.HttpModule.HttpModule, den Heijer" /> </httpHandlers> |
Posted By: Diep-Vriezer
Date Posted: 20 May 2004 at 12:44pm
Altough it worked  Thanks! I still don't understand why that module wouldn't work.. Anyway, I set the path to path="*.*" and it will handle pretty much everything.------------- Gone.. |
Posted By: Diep-Vriezer
Date Posted: 20 May 2004 at 1:38pm
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Erm, now I have all the extentions handled by that one module, including the .aspx pages If I would create a new <add verb="*" path="*.aspx" what type="" would I need if I want them to be handled by the original ASP.NET handler? ------------- Gone.. |
Posted By: Mart
Date Posted: 20 May 2004 at 2:42pm
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From my Machine.config file: <add verb="*" path="*.aspx" type="System.Web.UI.PageHandlerFactory"/> |
Posted By: Mart
Date Posted: 20 May 2004 at 2:44pm
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btw you can check out all the others in the following file: C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\CONFIG\machin e.config |
Posted By: Diep-Vriezer
Date Posted: 20 May 2004 at 5:43pm
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Thanks very much! It just looks really 1337 to have stuff like this http://www.blep.org/site.blep!weirdencryptedquery - http://www.blep.org/site.blep!weirdencryptedquery or whatever.. ------------- Gone.. |
