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I need to perform jsonp long polling in highly dynamic web application, however I'm experiencing massive memory leaks. Initially I've used Socket.IO and the jsonp transport with the same results and then setup a JQuery test page to see if the problem was localized only in the socket.io lib. I've found to my surprise that also doing jsonp polling from JQuery lead to the same results: in IE9 the memory increases very fast(less than 10 min ) from around 80-90 MB to more than 1.8 GB :(.
He're is the test code for the client side:
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js">
<script type="text/javascript">
$(document).ready( function() {
var doPoll = function() {
$.ajax({
type: 'GET',
url: "http://<server-url>/jquery-jsonp/server.php",
cache: false,
async: true,
crossDomain: true,
dataType: "jsonp",
success: function (data, status) {
console.log("Received response"+data);
doPoll();
},
error: function (xhr, textStatus, errorThrown) {
// access denied
}
});
}
doPoll();
});
</script>
</head>
And here is the dummy server response:
<?php echo $_GET['callback']."(".json_encode(array("status"=>"success")).")";
As you can see nothing special here. Any thoughts on what is causing this and possible work-arounds ?
The request need to be performed cross origin and we must support IE8/9. Thank you very much.
300
asked Aug 04 '26 12:08
Try calling doPoll() at an interval of a few seconds, like this:
success: function (data, status) {
console.log("Received response"+data);
setTimeout(doPoll, 10000); // 10 second wait before next request sent
},
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