Use describeType method to show information for a type
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
import mx.controls.Image;
import mx.controls.Alert;
import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
import flash.utils.describeType;
function faultHandler(event:FaultEvent):void {
Alert.show(event.fault.faultString);
}
function resultHandler(event:ResultEvent):void {
Alert.show(describeType(event.result));
}
</mx:Script>
<mx:HTTPService id="myHTTPService" url="http://localhost/a.png" fault="faultHandler(event)" result="resultHandler(event)" />
<mx:VBox id="myVBox" width="100%" height="100%" />
<mx:Button label="Invoke HTTPService" click="myHTTPService.send()" />
</mx:Application>
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