Network Flash ActionScript

package
{
    import flash.display.Sprite;
    import flash.net.Socket;
    import flash.events.Event;
    import flash.events.IOErrorEvent;
    public class Main extends Sprite
    {
        protected var sock:Socket = new Socket();
        public function Main()
        {
            super();
            sock.addEventListener(Event.CONNECT, onSocketOpen);
            sock.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
            sock.connect("www.cmu.edu", 80);
        }
        protected function onSocketOpen(event:Event):void
        {
            trace("Connected succesfully!");
            sock.close();
        }
        protected function onIOError(event:IOErrorEvent):void
        {
            trace(event.text);
            //Error #2031: Socket Error. URL: www.cmu.edu
            sock.close();
        }
    }
}