flex socket 监听服务器发送过来的请求

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">

<mx:Script>
<![CDATA[
import mx.controls.Alert;
import flash.net.Socket;

private var socket:Socket;

internal function conn():void{
socket = new Socket();
socket.connect("192.168.2.129",9081);
socket.addEventListener(Event.CONNECT,connect);
socket.addEventListener(Event.CLOSE,close);
socket.addEventListener(ProgressEvent.SOCKET_DATA,getData);
}

internal function connect(event:Event):void{
Alert.show("Connect!");
}

internal function close(event:Event):void{
Alert.show("Close!");
}

internal function getData(event:ProgressEvent):void{
var msg:String="";
while(socket.bytesAvailable){
msg=socket.readMultiByte(socket.bytesAvailable,"utf8");
Alert.show(msg);
}
}

internal function sendMsg():void{
var message:ByteArray=new ByteArray();//新建一个ByteArray存放数据
//写入数据，writeUTFBytes方法，以utf-8格式传数据避免中文乱码
message.writeUTFBytes(msg.text + "\n");
//写入Socket的缓冲区
socket.writeBytes(message);
socket.flush();
}
]]>
</mx:Script>

<mx:Button click="conn()" label="连接socket"/>
<mx:Button x="130" y="0" label="发送信息" click="sendMsg()"/>
<mx:TextInput x="59" y="58" id="msg"/>

</mx:Application>