| <!doctype html> |
| <style> |
| iframe |
| { |
| height: 60px; |
| width: 200px; |
| } |
| </style> |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| function emitFrameWithContents(contents) |
| { |
| document.write("<iframe src=\"data:text/html," + contents + "\"></iframe>"); |
| } |
| function getRandomHost() |
| { |
| return "www." + Math.floor(Math.random() * 10000000000) + ".invalid"; |
| } |
| function emitFrameForManualDNSPrefetch() |
| { |
| const host = getRandomHost(); |
| emitFrameWithContents("<link rel='dns-prefetch' href='http://" + host + "'>" + host); |
| } |
| </script> |
| <p>This is a test of DNS prefetch control. It's considered a pass if it doesn't crash. It can also be used as |
| a manual test of DNS prefetch using a networking monitoring tool.</p> |
| |
| <p>The following frames contain links that are expected to trigger a DNS prefetch.</p> |
| |
| <div> |
| <script>emitFrameForManualDNSPrefetch()</script> |
| </div> |
