| <!doctype html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>about:blank Network Partition Checker</title> |
| <meta name="help" href="https://fetch.spec.whatwg.org/#network-partition-keys"> |
| <meta name="timeout" content="normal"> |
| </head> |
| <body> |
| <script> |
| async function fetch_and_reply() { |
| // Load about:blank in a new tab, and inject the network partition checking code into it. |
| var win; |
| try { |
| win = window.open(); |
| var url = 'SUBRESOURCE_PREFIX:&dispatch=fetch_file&path=fetch/connection-pool/resources/network-partition-checker.html&sandbox=true'; |
| var response = await fetch(url, {credentials: 'omit', mode: 'cors'}); |
| win.document.write(await response.text()); |
| } catch (e) { |
| win.close(); |
| window.parent.postMessage({result: 'error', details: e.message}, '*'); |
| return; |
| } |
| |
| // Listen for first message from the new window and pass it back to the parent. |
| function message_listener(event) { |
| window.parent.postMessage(event.data, '*'); |
| win.close(); |
| } |
| window.addEventListener('message', message_listener, {once: true}); |
| } |
| fetch_and_reply(); |
| </script> |
| </body> |
| </html> |
