我打开了一个多播套接字,正在接收多播消息。从这个线程看来,同一个多播套接字也应该能够接收单播消息。但是,我什么也得不到。
编辑:端口号似乎是问题所在。端口3702被ws-discovery用于单播,这与我正在尝试的操作有关。我正在追踪一个问题,其中客户端对服务的探测没有被服务的多播套接字捕获。我在windows上运行这个。
我的多播服务器:
class Server extends Thread {
MulticastSocket multicastSocket;
final Logger LOG;
final int PORT = 3702;
final String MULTICAST_ADDR = "239.255.255.250";
InetAddress multicastGroup;
public Server() {
LOG = Logger.getLogger("Server");
try {
multicastGroup = InetAddress.getByName(MULTICAST_ADDR);
multicastSocket = new MulticastSocket(PORT);
multicastSocket.setInterface(InetAddress.getLocalHost());
multicastSocket.joinGroup(multicastGroup);
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void run() {
while (!Global.exit) {
byte[] buf = new byte[1000];
DatagramPacket recv = new DatagramPacket(buf, buf.length);
try {
multicastSocket.receive(recv);
String msg = new String(recv.getData(), StandardCharsets.UTF_8);
LOG.log(Level.INFO, "got: " + msg);
} catch (IOException e) {
e.printStackTrace();
}
}
}
客户代码:
public void directMsgTest(){
try {
DatagramSocket datagramSocket = new DatagramSocket( 8080,InetAddress.getLocalHost());
String msg = "direct msg";
byte[] buf = msg.getBytes();
DatagramPacket packet = new DatagramPacket(buf, buf.length, InetAddress.getLocalHost(), DST_PORT);
datagramSocket.send(packet);
datagramSocket.close();
} catch (Exception e) {
e.printStackTrace();
}
}
暂无答案!
目前还没有任何答案,快来回答吧!