//允许Objecy Replication
     groupSpecifier.objectReplicationEnabled = true; //onConnect() function中设置

//设置replicationStrategy
netGroup.replicationStrategy = NetGroupReplicationStrategy.LOWEST_FIRST;//onNetGroupConnect() function中设置

//netStatusHandler中注意以下事件处理，接收和发送文件块
 
case "NetGroup.Replication.Fetch.Result": // e.info.index, e.info.object
 
					//作为发布者已经接收的部分
					netGroup.addHaveObjects(e.info.index,e.info.index);
					if(e.info.code != "NetGroup.Replication.Fetch.Result"){
						break;
					}
 
					//接收文件
					p2pSharedObject.chunks[e.info.index] = e.info.object;
					updateStatus("正在接收第"+e.info.index+"块文件");
 
					if(e.info.index == 0){
						p2pSharedObject.packetLenght = Number(e.info.object.length);
						p2pSharedObject.name = e.info.object.name;
						updateStatus("要接收的文件有: "+p2pSharedObject.packetLenght+"块文件");
						receiveObject(1);
 
					}else{
						if(e.info.index+1<p2pSharedObject.packetLenght){
							receiveObject(e.info.index+1);
						}else{
							updateStatus("文件接收完毕");
							updateStatus("接收了: "+p2pSharedObject.packetLenght+"块文件");
 
							p2pSharedObject.data = new ByteArray();
							for(var i:int = 1;i<p2pSharedObject.packetLenght;i++){
								p2pSharedObject.data.writeBytes(p2pSharedObject.chunks[i]);
							}
 
							updateStatus("字节长度: "+p2pSharedObject.data.length);
 
							Alert.show("保存文件","文件下载完毕，是否保存?",Alert.YES|Alert.NO,null,saveFileHandelr)
 
						}
					}
 
					break;
                case "NetGroup.Replication.Request": // e.info.index, e.info.requestID
					//同时作为发布者
					netGroup.writeRequestedObject(e.info.requestID,p2pSharedObject.chunks[e.info.index])
					updateStatus("接收方ID: "+e.info.requestID+", 需要的文件块: "+e.info.index);
					break;

           /**
            *
            * NetStraeam链接到用户组后触发
            * */
            private function onNetStreamConnect():void
            {
            	//加载话筒
                netStream.client = this;
                var mic:Microphone = Microphone.getMicrophone();
                if(mic)
                {
                    mic.codec = SoundCodec.SPEEX;
                    mic.setSilenceLevel(0);
 
                    netStream.attachAudio(mic);
 
                    updateStatus("话筒设置完毕\n");
                }
                //加载视频，并发布视频和话筒
                publishVideo()
 
            }

            /**
            *
            * NetStraeam链接到用户组后触发
            * */
            private function onNetStreamConnect():void
            {
                netStream.client = this;
 
                if(null != video)
                {
                    videoDisplay.removeChild(video);
                    video = null;
                }
 
                video = new Video();
                video.smoothing = true;
                video.attachNetStream(netStream);
                videoDisplay.addChild(video);
 
                //播放视频
                netStream.play("stream");
                netStream.bufferTime = 1.0;
            }

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" close="closeHandler()" creationComplete="init()">
	<mx:Script>
		<![CDATA[
			import flash.events.Event;
            import flash.events.ProgressEvent;
            import flash.events.ServerSocketConnectEvent;
            import flash.net.ServerSocket;
            import flash.net.Socket;
            import flash.utils.ByteArray;
 
            import mx.controls.Alert;
 
 
            //ServerSocket，用于监听TCP下的链接
            private var serverSocket:ServerSocket;
 
            private var mimeTypes:Object = new Object();
 
            private function init():void
            {
                // 支持的类型
                mimeTypes[".css"]     = "text/css";
                mimeTypes[".gif"]     = "image/gif";
                mimeTypes[".htm"]     = "text/html";
                mimeTypes[".html"]     = "text/html";
                mimeTypes[".ico"]     = "image/x-icon";
                mimeTypes[".jpg"]     = "image/jpeg";
                mimeTypes[".js"]     = "application/x-javascript";
                mimeTypes[".png"]     = "image/png";
 
                // 初始化服务器文件夹
                var webroot:File = File.applicationStorageDirectory.resolvePath("webroot");
                if (!webroot.exists)
                {
                    File.applicationDirectory.resolvePath("webroot").copyTo(webroot);
                }
            }
 
            private function listen():void
            {
                try
                {
 
                    serverSocket = new ServerSocket();
                    //监听链接
                    serverSocket.addEventListener(Event.CONNECT, socketConnectHandler);
                    //绑定端口
                    serverSocket.bind(Number(port.text));
                    //开始
                    serverSocket.listen();
                    log.text += "正在监听 " + port.text + "端口...\n";
                }
                catch (error:Error)
                {
                    Alert.show("端口 " + port.text + 
                        " 也许正在被使用，请尝试另一个端口.\n(" +
                        error.message +")", "错误");
                }
            }
 
            private function socketConnectHandler(event:ServerSocketConnectEvent):void
            {
                var socket:Socket = event.socket;
                //监听数据
                socket.addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler);
            }
 
            private function socketDataHandler(event:ProgressEvent):void
            {
                try
                {
                    var socket:Socket = event.target as Socket;
                    var bytes:ByteArray = new ByteArray();
                    socket.readBytes(bytes);
                    var request:String = "" + bytes;
                    log.text += request;
                    var filePath:String = request.substring(4, request.indexOf("HTTP/") - 1);
                    var file:File = File.applicationStorageDirectory.resolvePath("webroot" + filePath);
                    if (file.exists && !file.isDirectory)
                    {
                        var stream:FileStream = new FileStream();
                        stream.open( file, FileMode.READ );
                        var content:ByteArray = new ByteArray();
                        stream.readBytes(content);
                        stream.close();
                        socket.writeUTFBytes("HTTP/1.1 200 OK\n");
                        socket.writeUTFBytes("Content-Type: " + getMimeType(filePath) + "\n\n");
                        socket.writeBytes(content);
                    }
                    else
                    {
                        socket.writeUTFBytes("HTTP/1.1 404 Not Found\n");
                        socket.writeUTFBytes("Content-Type: text/html\n\n");
                        socket.writeUTFBytes("<html><body><h2>Page Not Found</h2></body></html>");
                    }
                    socket.flush();
                    socket.close();
                }
                catch (error:Error)
                {
                    Alert.show(error.message, "错误");
                }
            }
 
            private function getMimeType(path:String):String
            {
                var mimeType:String;
                var index:int = path.lastIndexOf(".");
                if (index > -1)
                {
                    mimeType = mimeTypes[path.substring(index)];
                }
                return mimeType == null ? "text/html" : mimeType;
            }
 
 
            private function closeHandler():void{
            	if(serverSocket){
            		serverSocket.close()
            	}
 
            }
		]]>
	</mx:Script>
 
	<mx:HBox verticalAlign="middle">
        <mx:Label text="Port:"/>
        <mx:TextInput id="port" text="8765" width="50"/>
        <mx:Button label="Listen" click="listen()"/>
    </mx:HBox>
 
    <mx:TextArea id="log" width="100%" height="100%" />
</mx:WindowedApplication>