php与flash as3 socket通信传送文件实现代码

public class SocketTest extends Sprite {
public function SocketTest() {
var socket = new Socket();
socket.connect("localhost",5277);
socket.addEventListener(Event.CLOSE,closeHandler);
socket.addEventListener(Event.CONNECT,connectHandler);
socket.addEventListener(IOErrorEvent.IO_ERROR,ioErrorHandler);
socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR,securityErrorHandler);
socket.addEventListener(ProgressEvent.SOCKET_DATA,socketDataHandler);
var response:String;

function writeln(str:String):void {
str+="";
try {
socket.writeUTFBytes(str);
} catch (e:IOError) {
trace(e);
}
}
function sendRequest():void {
trace("sendRequest");
response="";
writeln('bin');
socket.flush();
}
function readResponse():void {
//接受数据
var str:String=socket.readUTFBytes(socket.bytesAvailable);
response+=str;
//当数据以end结束的时候,数据传输结束
if (StringUtil.endsWith(str,'end')) {
response=response.substr(0,response.length-3);
//把字符串转换为ByteArray
var ba=Base64.decodeToByteArray(response);
//trace('bytearray=====',ba);
var l:Loader = new Loader();
//从 ByteArray 对象中所存储的二进制数据中加载。
l.loadBytes(ba);
//trace(l.content);
addChild(l);
}
}
function closeHandler(e:Event):void {
trace("Socket closed! ");
}
function connectHandler(e:Event):void {
trace("Socket connected!");
sendRequest();
}
function ioErrorHandler(e:IOErrorEvent):void {
trace("IOError!");
}
function securityErrorHandler(e:SecurityErrorEvent):void {
trace("SecurityError!");
}
function socketDataHandler(e:ProgressEvent):void {
trace("Socket have data!");
readResponse();
}

}
}
}