HTTP Response Headers

 

Applies To: Windows Server 2012 R2, Windows Server 2012

Use the HTTP Response Headers feature page to manage a list of name and value pairs that contain information about a requested page, and to configure common HTTP headers.

Sort the list by clicking one of the feature page column headings or select a value from the Group by drop-down list to group similar items.

Related scenarios

• Build a Static Website on IIS

• Build a Classic ASP Website on IIS

• Build an ASP.NET Website on IIS

• Build a PHP Website on IIS

In this document

• UI Elements for HTTP Response Headers

• Add or Edit Custom HTTP Response Header Dialog Box

• Set Common HTTP Response Headers Dialog Box

UI Elements for HTTP Response Headers

The following tables describe the UI elements that are available on the feature page and in the Actions pane.

Feature Page Elements

Element Name	Description
Name	Displays the name part of an HTTP response header name-value pair.
Value	Displays the value part of an HTTP response header name-value pair.
Entry Type	Displays whether the item is local or inherited. Local items are read from the current configuration file, and inherited items are read from a parent configuration file.

Actions Pane Elements

Element Name	Description
Add	Opens the Add Custom HTTP Response Header dialog box in which you can add a header.
Set Common Headers	Opens the Set Common HTTP Response Headers dialog box in which you can configure the HTTP keep-alive and Web content expiration headers.
Edit	Opens the Edit Custom HTTP Response Header dialog box in which you can edit a header. This action is available only when an item is selected from the list on the feature page.
Remove	Removes the item that is selected from the list on the feature page.

Add or Edit Custom HTTP Response Header Dialog Box

Use the Add Custom HTTP Response Header and Edit Custom HTTP Response Header dialog boxes to add or edit name and value pairs that contain information about a requested page. For example, you can create a custom header named “author” that contains the name of the content author for a site.

Element Name	Description
Name	Type the name part of an HTTP response header name-value pair.
Value	Type the value part of an HTTP response header name-value pair.

Set Common HTTP Response Headers Dialog Box

Use the Set Common HTTP Response Headers dialog box to configure headers that enable HTTP keep-alive and specify when to expire Web content.

Element Name	Description
Enable HTTP keep-alive	Select this option to keep a client/server connection open across multiple requests to the server. An open connection improves performance when a client makes multiple requests for Web page content because the server can more quickly return the content for each request. Note You must use HTTP keep-alive when you use integrated security or connection-based authentication services such as Integrated Windows authentication.
Expire Web content	Select this option to configure the expiration of Web content. A Web server returns this header value to a client browser in an HTML file header. The browser compares that value with the current date to determine whether to display a page that is cached on the client computer or to request an updated page from the server. Then select one of the following options to specify when to expire the content: Immediately - expires the content immediately after it is delivered. This setting is best for content that contains sensitive information that you do not want to be cached or that is updated very frequently. After - sets the amount of time after which the content will be expired. This setting is best for content that is updated regularly, such as on a daily or weekly basis. Type a value in the corresponding box and select one of the following values from the list: Second(s), Minute(s), Hour(s), Day(s). On (in Coordinated Universal Time (UTC)) - sets an exact date and time when the content will expire. This setting is best for content that is not expected to change frequently.