A user account is required in order to edit this wiki, but we've had to disable public user registrations due to spam.

To request an account, ask an autoconfirmed user on Chat (such as one of these permanent autoconfirmed members).

Meta referrer: Difference between revisions

From WHATWG Wiki
Jump to navigation Jump to search
No edit summary
Line 8: Line 8:


The referrer metadata attribute can have one of four values:
The referrer metadata attribute can have one of four values:
* <code>never</code> (Never include a <code>Referer</code> header.)
* <code>never</code>
* <code>always</code> (Always include a <code>Referer</code> header.)
* <code>always</code>
* <code>origin</code> (Use the document's origin in the <code>Referer</code> header.)
* <code>origin</code>
* <code>default</code> (Use the user agent's default policy for whether to include a <code>Referer</code> header.)
* <code>default</code>


Let ''directive'' be the value of the <code>content</code> attribute with <code>LWS</code> stripped and covered to lower case.  If ''directive'' is none of the strings listed above, the user agent MUST act as if ''directive'' is the string <code>default</code>.


==Examples==
==Examples==

Revision as of 21:26, 25 October 2011

Overview

This document describes a proposal the "referrer" metadata name. Using the referrer metadata attribute, a document can control the behavior if the Referer HTTP header attached to requests that originate from the document.

Specification

Keyword: referrer

The referrer metadata attribute can have one of four values:

  • never
  • always
  • origin
  • default

Let directive be the value of the content attribute with LWS stripped and covered to lower case. If directive is none of the strings listed above, the user agent MUST act as if directive is the string default.

Examples

This meta element instructs the user agent to omit the Referer header in all HTTP requests that originate from the document containing the element:

<meta name="referrer" content="never">

This meta element instructs the user agent to include the document's origin in the Referer header rather than the full URL of the document.

<meta name="referrer" content="origin">