client-hints-meta-iframe-inner.sub.https.html (431B)
1 <!DOCTYPE html> 2 <meta http-equiv="Accept-CH" 3 content="sec-ch-viewport-width"/> 4 <meta http-equiv="Feature-Policy" 5 content="ch-viewport-width *"/> 6 <title>Client Hint Echoing Iframe</title> 7 <body> 8 <script> 9 window.parent.postMessage({'headers': { 10 'sec-ch-viewport-width': '{{header_or_default(sec-ch-viewport-width, )}}', 11 'sec-ch-ua-mobile': '{{header_or_default(sec-ch-ua-mobile, )}}', 12 }}, '*'); 13 </script> 14 </body>