gistfile1.txt

/**
 * Created by s.shvyrev on 20.05.2014.
 */
package {
import flash.events.EventDispatcher;
import flash.events.NetStatusEvent;
import flash.events.SecurityErrorEvent;
import flash.net.NetConnection;
import flash.utils.clearInterval;
import flash.utils.setInterval;

public class BWChecker extends EventDispatcher {
    private var _url:String;
    private var nc:NetConnection;
    private var bwInterval:int;
    private var counter:int;
    public function BWChecker(url:String) {
        _url = url;
        super();
    }

    public function check():void {
        if (nc == null)
        {
            nc = new NetConnection();
            nc.addEventListener(NetStatusEvent.NET_STATUS, handler_netStatus);
            nc.addEventListener(SecurityErrorEvent.SECURITY_ERROR, handler_error);


            var ncClientObj:Object = new Object();
            nc.client = ncClientObj;
            ncClientObj.onBWDone = ncOnBWDone;
            ncClientObj.onBWCheck = ncOnBWCheck;

            nc.connect(_url, true);
        }
        else
        {
            nc.close();
            nc = null;
        }
    }

    private function handler_error(event:SecurityErrorEvent):void {
        trace(event.type);
    }

    private function handler_netStatus(event:NetStatusEvent):void {
        trace("code:", event.info.code);
    }

    private function ncOnBWDone(kbitDown:Number, deltaDown:Number, deltaTime:Number, latency:Number)
    {
        trace("onBWDone: kbitDown:"+kbitDown+" deltaDown:"+deltaDown+" deltaTime:"+deltaTime+" latency:"+latency);

        // app logic based on the bandwidth detected follows here
        var detected_bw:Number = kbitDown;
        bwInterval = setInterval(doBWCheck, 5000);

        var msgStr:String = "download speed: "+kbitDown+"Kbps  latency: "+latency+"ms";
//        bwList.replaceItemAt({label: msgStr}, bwList.length-1);
    }

    private function doBWCheck()
    {
        clearInterval(bwInterval);
        counter = 0;
        nc.call("checkBandwidth", null);
//        bwList.dataProvider.addItem({label: "testing performance..."});
    }

    public function ncOnBWCheck(param)
    {
        trace("onBWCheck");
        return ++counter; // Serverside, just ignore any return value, For now return the call count
    }
}
}