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<html>
<head>
<script>
function exec(data, callback, type)
{
type = type || 'EXEC';
var xhr = new XMLHttpRequest;
xhr.open("POST", "../" + type, true);
xhr.setRequestHeader("Content-Length", data.length);
xhr.onreadystatechange = function() {
if (xhr.readyState != 4 || xhr.status != 200)
return;
callback(xhr.responseText);
};
xhr.send(data);
}
function poll(id, callback)
{
exec(id, function(response) {
callback(response);
setTimeout(function() { poll(id, callback); }, 0);
}, 'SUBSCRIBE');
}
window.addEventListener("message", function(event) {
var data = JSON.parse(event.data);
function callback(r) { window.parent.postMessage(JSON.stringify({ type: "callback", id: data.id, payload: r }), "*"); }
if (data.type == "EXEC")
exec(data.payload, callback);
else if (data.type == "SUBSCRIBE")
poll(data.id, callback);
});
</script>
</head>
<body onload="window.parent.postMessage('11111')">
</body>
</html>
|
