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<!doctype html>
<title>Child helper</title>
<script>
window.addEventListener("message", function(e) {
// e.source.postMessage(e.data, e.origin);
var client = new XMLHttpRequest();
var localurl = e.data.url
.replace("<host>", location.host)
.replace("<protocol>", location.protocol);
client.open('GET', localurl, true);
client.onload = function() {
e.data.state = "load";
e.data.response = client.response;
e.source.postMessage(e.data, e.origin);
}
client.onerror = function() {
e.data.state = "error";
e.data.response = client.response;
e.source.postMessage(e.data, e.origin);
}
client.send();
});
</script>
The remote window