| 1 | /**
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| 2 | * Check user bandwidth/connection speed over HTTP or RTMP.
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| 3 | *
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| 4 | * @example
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| 5 | * var bwc = new BandwidthCheck("http://www.server.com/upload/100k.jpg");
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| 6 | * bwc.onComplete = function(kbps) { trace(kbps); };
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| 7 | *
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| 8 | * @author Brian Weil
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| 9 | * @author Stefan Richter
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| 10 | * @author Jeroen Wijering
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| 11 | * @version 1.0
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| 12 | **/
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| 13 |
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| 14 |
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| 15 | class com.jeroenwijering.utils.BandwidthCheck {
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| 16 |
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| 17 |
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| 18 | /** MovieClipLoader instance **/
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| 19 | private var loader:MovieClipLoader;
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| 20 | /** NetConnection instance **/
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| 21 | private var connector:NetConnection;
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| 22 | /** MovieClip instance **/
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| 23 | private var clip:MovieClip;
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| 24 | /** Start time of test **/
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| 25 | private var startTime:Number;
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| 26 |
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| 27 |
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| 28 | /** Constructor for the BandwidthCheck **/
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| 29 | function BandwidthCheck(fil:String) {
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| 30 | var ref = this;
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| 31 | if (fil.indexOf("rtmp") == -1) {
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| 32 | loader = new MovieClipLoader;
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| 33 | loader.addListener(this);
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| 34 | clip = _root.createEmptyMovieClip("_bwchecker",1);
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| 35 | loader.loadClip(fil + "?" + random(9999),clip);
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| 36 | } else {
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| 37 | connector = new NetConnection();
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| 38 | connector.onStatus = function(info) {
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| 39 | if(info.code != "NetConnection.Connect.Success") {
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| 40 | ref.onComplete(0);
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| 41 | }
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| 42 | };
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| 43 | connector.connect(fil, true);
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| 44 | connector.onBWDone = function(kbps,dtd,dtt,lat) {
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| 45 | ref.onComplete(kbps);
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| 46 | };
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| 47 | connector.onBWCheck = function() {};
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| 48 | }
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| 49 | };
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| 50 |
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| 51 |
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| 52 | /** event handler for finished loading **/
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| 53 | private function onLoadComplete(tgt:MovieClip,hts:Number) {
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| 54 | tgt._visible = false;
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| 55 | var dat = new Date();
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| 56 | var ttl = clip.getBytesTotal();
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| 57 | var sec = (dat.getTime() - startTime)/1000;
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| 58 | var klb = ttl * 0.0078125*0.93;
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| 59 | var kbps = Math.floor(klb/sec);
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| 60 | onComplete(kbps);
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| 61 | clip.removeMovieClip();
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| 62 | };
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| 63 |
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| 64 |
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| 65 | /** event handler for loading error **/
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| 66 | private function onLoadError(tgt:MovieClip,err:String,stt:Number) {
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| 67 | onComplete(0);
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| 68 | };
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| 69 |
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| 70 |
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| 71 | /** event handler for loading start **/
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| 72 | private function onLoadStart() {
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| 73 | var d = new Date();
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| 74 | startTime = d.getTime();
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| 75 | };
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| 76 |
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| 77 |
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| 78 | /** event handler for completed test **/
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| 79 | public function onComplete() {};
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| 80 |
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| 81 |
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| 82 | } |
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