| <!DOCTYPE html> | |
| <body> | |
| <script> | |
| function forwardMessage(e) { | |
| let broadcastChannel = new BroadcastChannel(new URL(location).searchParams.get('broadcastchannel')); | |
| try { | |
| broadcastChannel.postMessage(e.data); | |
| } finally { | |
| broadcastChannel.close(); | |
| } | |
| } | |
| window.addEventListener("message", forwardMessage); | |
| </script> | |
| </body> |