Asp.net-mvc – Exclude HttpModule from running for static content on IIS7

asp.net-mvchttpmoduleiis-7

I have a problem with my Authentication HttpModule. The problem is that it obviously runs for every single request I get on my web server (IIS7). Because it also uses Session variable, it fails to work properly on CSS, JS files and similar.

I tried to use:

<add name="AuthModuleName" type="..." preCondition="managedHandler" />

but to no avail. It still runs on every request regardless of its extension or mime type. I should also add, there's a setting

<modules runAllManagedModulesForAllRequests="true">

that seemed suspicious to me and actually disabled preConditions on modules. But changing it to false, breaks the application in a completely different way and with a different exception (The SessionStateTempDataProvider requires SessionState to be enabled).

Can anybody help me how to force IIS7 to exclude my HttpModule when requests are made for static content files?

Best Answer

runAllManagedModulesForAllRequests attribute has to be set to false to actually configure any module the way you want. You will have to also correctly reconfigure Session and others as needed, but the main thing is handlers pipeline execution order that handles requests.

The answer was provided in one of my other questions:

Thanks to Peter that provided the answer that worked correctly.

Related Solutions

How to configure static content cache per folder and extension in IIS7

You can set specific cache-headers for a whole folder in either your root web.config:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <!-- Note the use of the 'location' tag to specify which 
       folder this applies to-->
  <location path="images">
    <system.webServer>
      <staticContent>
        <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="00:00:15" />
      </staticContent>
    </system.webServer>
  </location>
</configuration>

Or you can specify these in a web.config file in the content folder:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
    <staticContent>
      <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="00:00:15" />
    </staticContent>
  </system.webServer>
</configuration>

I'm not aware of a built in mechanism to target specific file types.

IIS7 HttpModule and ISAPI Filter execution order

I've also had a similar problem where I thought that ISAPI rewrites get executed first, but apparently that's not how things work with IIS7

I found this thread that states

In integrated mode the events for native module, isapi and .net are called mixed together

e.g. if it's a BeginRequest then the native module is the first to come, then isapi, then .net code. After that everything will repeat for AuthenticateRequest...

Some time ago it used to be like this: isapi has processed all events, and only after that .net was invoked. This is probably what you've assumed.

http://www.helicontech.com/forum/18447-ISAPI_RW3_Lite_on_IIS_7x_Integrated_mode.html

Hopefully it helps

Best Answer

Related Solutions

How to configure static content cache per folder and extension in IIS7

IIS7 HttpModule and ISAPI Filter execution order

Related Topic