gistfile1.xml

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="init()">
	<mx:Script>
		<![CDATA[
			import mx.rpc.events.FaultEvent;
			import mx.rpc.events.ResultEvent;
			private function init() : void
			{
				core.addEventListener(ResultEvent.RESULT,
					function(e:ResultEvent):void{ trace("Result: "+e.result); });
				core.addEventListener(FaultEvent.FAULT,
					function(f:FaultEvent):void{ trace("Fault: "+f.message); });
				core.echo("Hello, world!");
			}
		]]>
	</mx:Script>
	<mx:RemoteObject endpoint="http://localhost:8000/" destination="echo" id="core" />
</mx:Application>