1 window.location.href = http://127.0.0.1:8000/security/postMessage/delivery-order.html
4 Before calling postMessage
5 After calling postMessage
6 Received message: data="Received message: data="Message from parent" origin="http://127.0.0.1:8000"" origin="http://localhost:8000"
7 Received message: data="Received message: data="done" origin="http://127.0.0.1:8000"" origin="http://localhost:8000"