| <!DOCTYPE html> |
| <meta http-equiv="Accept-CH" |
| content="sec-ch-viewport-width, sec-ch-ua-reduced"/> |
| <meta http-equiv="Feature-Policy" |
| content="ch-viewport-width *, ch-ua-reduced *"/> |
| <title>Client Hint Echoing Iframe</title> |
| <body> |
| <script> |
| window.parent.postMessage({'headers': { |
| 'sec-ch-viewport-width': '{{header_or_default(sec-ch-viewport-width, )}}', |
| 'sec-ch-ua-reduced': '{{header_or_default(sec-ch-ua-reduced, )}}', |
| 'sec-ch-ua-mobile': '{{header_or_default(sec-ch-ua-mobile, )}}', |
| }}, '*'); |
| </script> |
| </body> |
