JXTA下的媒体数据传输

领测软件测试网

呵呵，Jxta真的可以成为网络Radio吗？

众所周知，现在的网络通讯通常使用TCP或是UDP协议，而TCP常常因为资源占用太大而在媒体数据传输时弃之不用，UDP成为了解决方案之一。在JXTA中，也有类似UDP协议的实现，通过构造JxtaMulticastSocket类来实现。该类与Socket类类似，不过构造方式有了很大的变化，后者通过IP和端口，而该类则通过管道广告，这便具有了JXTA技术的特点，因为JXTA是采用虚拟管道通信，而管道资源的表现形式是广告。以下是一段代码，用来发送媒体数据的：

class SendMessageThread extends Thread {
                public void run() {
                        System.out.println("SendMessageThread is run.");
                        int sendCount = 0;
                        File file = null;
                        try {
                                file = new File("E:\\TDdownload\\Movie\\23409484.wmv");
                                fis = new FileInputStream(file);
                                bis = new BufferedInputStream(fis);
                        } catch (FileNotFoundException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                        }

                        byte[] buf = new byte[4096];
                        int i = 0;
                        try {
                                JxtaMulticastSocket tmpSocket = new JxtaMulticastSocket(pg,
                                                pipeAdv);
                                System.out.println(pipeAdv);
                                while ((i = bis.read(buf)) != -1) {
                                        sendCount++;
                                        System.out.println(buf);
                                        DatagramPacket dp = new DatagramPacket(buf, buf.length);
                                        tmpSocket.send(dp);
                                }

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