httpModules Element (ASP.NET Settings Schema)

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Configures the HTTP modules within an application. This element can be declared at any level in the configuration hierarchy.

<configuration> Element
  system.web Element (ASP.NET Settings Schema)
    httpModules Element (ASP.NET Settings Schema)

<httpModules> 
   <add... />
   <remove... />
   <clear/>
</httpModules>

Attributes and Elements

The following sections describe attributes, child elements, and parent elements.

Attributes

None.

Child Elements

Element

Description

add

Optional element.

Adds an httpModules element to an application.

clear

Optional element.

Removes all httpModules element from an application.

remove

Optional element.

Removes a reference to an httpModules element.

The value must exactly match that of a previous add directive.

Parent Elements

Element

Description

configuration

Specifies the required root element in every configuration file that is used by the common language runtime and the .NET Framework applications.

system.web

Specifies the root element for the ASP.NET configuration section.

Remarks

Default Configuration

The following default httpModules element is configured in the Machine.config file in the .NET Framework version 1.1.

<httpModules>
     <add name="OutputCache" type="System.Web.Caching.OutputCacheModule"/>
     <add name="Session" type="System.Web.SessionState.SessionStateModule"/>
     <add name="WindowsAuthentication" type="System.Web.Security.WindowsAuthenticationModule"/>
     <add name="FormsAuthentication" type="System.Web.Security.FormsAuthenticationModule"/>
     <add name="PassportAuthentication" type="System.Web.Security.PassportAuthenticationModule"/>
     <add name="UrlAuthorization" type="System.Web.Security.UrlAuthorizationModule"/>
     <add name="FileAuthorization" type="System.Web.Security.FileAuthorizationModule"/>
     <add name="ErrorHandlerModule" type="System.Web.Mobile.ErrorHandlerModule, System.Web.Mobile, 
          Version=1.0.5000.0, Culture=neutral, 
          PublicKeyToken=b03f5f7f11d50a3a"/>
</httpModules>

The following default httpModules element is configured in the Machine.config file in the .NET Framework version 1.0.

<httpModules>
     <add name="OutputCache" type="System.Web.Caching.OutputCacheModule" />
     <add name="Session" type="System.Web.SessionState.SessionStateModule" />
     <add name="WindowsAuthentication" type="System.Web.Security.WindowsAuthenticationModule" />
     <add name="FormsAuthentication" type="System.Web.Security.FormsAuthenticationModule" />
     <add name="PassportAuthentication" type="System.Web.Security.PassportAuthenticationModule" />
     <add name="UrlAuthorization" type="System.Web.Security.UrlAuthorizationModule" />
     <add name="FileAuthorization" type="System.Web.Security.FileAuthorizationModule" />
</httpModules>

The following default httpModules element is configured in the root Web.config file in the .NET Framework version 2.0.

<httpModules>
     <add name="OutputCache" type="System.Web.Caching.OutputCacheModule" />
     <add name="Session" type="System.Web.SessionState.SessionStateModule" />
     <add name="WindowsAuthentication" type="System.Web.Security.WindowsAuthenticationModule" />
     <add name="FormsAuthentication" type="System.Web.Security.FormsAuthenticationModule" />
     <add name="PassportAuthentication" type="System.Web.Security.PassportAuthenticationModule" />
     <add name="RoleManager" type="System.Web.Security.RoleManagerModule" />
     <add name="UrlAuthorization" type="System.Web.Security.UrlAuthorizationModule" />
     <add name="FileAuthorization" type="System.Web.Security.FileAuthorizationModule" />
     <add name="AnonymousIdentification" type="System.Web.Security.AnonymousIdentificationModule" />
     <add name="Profile" type="System.Web.Profile.ProfileModule" />
</httpModules>

Example

The following code example demonstrates how to add three HttpModulereferences to the ASP.NET application.

<configuration>
   <system.web>
      <httpModules>
         <add type="System.Web.Caching.OutputCacheModule" 
              name="OutputCache"/>
         <add type="System.Web.SessionState.SessionStateModule" 
              name="Session"/>
         <add type=Selector, selector.dll"
              name="Selector"/>
      </httpModules>
   </system.web>
</configuration>

Element Information

Configuration section handler

System.Web.Configuration.HttpModulesSection

Configuration member

SystemWebSectionGroup.HttpModules

Configurable locations

Machine.config

Root-level Web.config

Application-level Web.config

Virtual or physical directory–level Web.config

Requirements

Microsoft Internet Information Services (IIS) version 5.0, 5.1, or 6.0

The .NET Framework version 1.0, 1.1, or 2.0

Microsoft Visual Studio 2003 or Visual Studio 2005

See Also

Tasks

How to: Lock ASP.NET Configuration Settings

Reference

system.web Element (ASP.NET Settings Schema)

<configuration> Element

add Element for httpModules (ASP.NET Settings Schema)

clear Element for httpModules (ASP.NET Settings Schema)

remove Element for httpModules (ASP.NET Settings Schema)

System.Configuration

System.Web.Configuration

Concepts

ASP.NET Configuration Overview

ASP.NET Web Server Controls and Browser Capabilities

Securing ASP.NET Configuration

ASP.NET Configuration Scenarios

Other Resources

ASP.NET Configuration Files

ASP.NET Configuration Settings

General Configuration Settings (ASP.NET)

ASP.NET Configuration API