third_party/WebKit/LayoutTests/http/tests/misc/resources/prefetch-purpose.php

   1 <?php
   2 echo "Purpose: " . $_SERVER["HTTP_PURPOSE"];
   3 ?>
   4
   5 <script>
   6 testRunner.notifyDone();
   7 </script>
   8
   9 <p>This test verifies that prefetches are sent with the HTTP request
  10 header <b>Purpose: prefetch</b>.  To do this, the root page has a
  11 prefetch link targetting this subresource which contains a PHP script
  12 (resources/prefetch-purpose.php).  The PHP prints the value of the
  13 Purpose header into the document.  Later, the root page sets
  14 window.location to target this script, which should have "Purpose:
  15 prefetch" in its output if it's served from cache.