JXTA下的媒體數據傳輸

領測軟件測試網

呵呵，Jxta真的可以成為網絡Radio嗎？

眾所周知，現在的網絡通訊通常使用TCP或是UDP協議，而TCP常常因為資源占用太大而在媒體數據傳輸時棄之不用，UDP成為了解決方案之一。在JXTA中，也有類似UDP協議的實現，通過構造JxtaMulticastSocket類來實現。該類與Socket類類似，不過構造方式有了很大的變化，后者通過IP和端口，而該類則通過管道廣告，這便具有了JXTA技術的特點，因為JXTA是采用虛擬管道通信，而管道資源的表現形式是廣告。以下是一段代碼，用來發送媒體數據的：

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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