checkSpeedNtwk.html

<script type="text/javascript"  src="static/js/jquery.min.js" ></script>
<script>
    $(function() {
        var settings = {
            endpoint: 'checkSpeedUpload', // Where is located the PHP file.
            upload: {
                // Where is located your `network.php` file.
                // The delay while you want to take measures.
                delay: 8000,
                data: {
                    // The amount of data to initially use.
                    size: 2 * 1024 * 1024, // 2 MB
                    // If the measure period can't reach the delay defined in the settings,
                    // the data amount is multiplied by the following value.
                    multiplier: 2
                }
            }
        };

        var net = new Network(settings);
        net.upload
            .on('end', function(averageSpeed) {
                var finalValue = (averageSpeed/1024/1024)*8;
                window.parent.postMessage(finalValue, '*');
            })
            .start();

    });
</script>