List of usage examples for java.net DatagramPacket setSocketAddress
public synchronized void setSocketAddress(SocketAddress address)
From source file:Main.java
public static void main(String args[]) { try {//from w ww. ja v a2 s . c o m int port = 80; DatagramSocket ds = new DatagramSocket(port); byte buffer[] = new byte[BUFSIZE]; while (true) { DatagramPacket dp = new DatagramPacket(buffer, buffer.length); dp.setSocketAddress(InetSocketAddress.createUnresolved("google.com", 8080)); } } catch (Exception e) { e.printStackTrace(); } }
From source file:Main.java
public static void main(String args[]) { try {/*from w w w . j ava2 s. c o m*/ int port = 80; DatagramSocket ds = new DatagramSocket(port); byte buffer[] = new byte[BUFSIZE]; while (true) { DatagramPacket dp = new DatagramPacket(buffer, buffer.length); // Receive data ds.receive(dp); // Display address from the datagram packet InetAddress ia = dp.getAddress(); System.out.println(ia); dp.setSocketAddress(InetSocketAddress.createUnresolved("google.com", 8080)); } } catch (Exception e) { e.printStackTrace(); } }
From source file:com.bitbreeds.webrtc.datachannel.DataChannelImpl.java
@Override public void run() { if (parent.getRemote() == null) { throw new IllegalArgumentException("No user data set for remote user"); }/*w w w .j ava2 s. com*/ logger.info("Started listening to port: " + port); while (running && channel.isBound()) { byte[] bt = new byte[bufferSize]; try { if (mode == ConnectionMode.BINDING) { logger.info("Listening for binding on: " + channel.getLocalSocketAddress() + " - " + channel.getPort()); Thread.sleep(5); //No reason to hammer on this DatagramPacket packet = new DatagramPacket(bt, 0, bt.length); channel.receive(packet); SocketAddress currentSender = packet.getSocketAddress(); sender = currentSender; byte[] data = Arrays.copyOf(packet.getData(), packet.getLength()); logger.info("Received data: " + Hex.encodeHexString(data) + " on " + channel.getLocalSocketAddress() + " - " + channel.getPort()); byte[] out = bindingService.processBindingRequest(data, parent.getLocal().getUserName(), parent.getLocal().getPassword(), (InetSocketAddress) currentSender); ByteBuffer outData = ByteBuffer.wrap(out); logger.info("Sending: " + Hex.encodeHexString(outData.array()) + " to " + currentSender); DatagramPacket pc = new DatagramPacket(out, 0, out.length); pc.setSocketAddress(sender); channel.send(pc); this.mode = ConnectionMode.HANDSHAKE; //Go to handshake mode logger.info("-> DTLS handshake"); } else if (mode == ConnectionMode.HANDSHAKE) { Thread.sleep(5); logger.info("In handshake mode: "); if (transport == null) { channel.connect(sender); /** * {@link NioUdpTransport} might replace the {@link UDPTransport} here. * @see <a href="https://github.com/RestComm/mediaserver/blob/master/io/rtp/src/main/java/org/mobicents/media/server/impl/srtp/NioUdpTransport.java">NioUdpTransport</a> */ transport = serverProtocol.accept(dtlsServer, new DtlsMuxStunTransport(parent, channel, MTU)); } sctpService = new SCTPImpl(this); mode = ConnectionMode.TRANSFER; logger.info("-> SCTP mode"); } else if (mode == ConnectionMode.TRANSFER) { /** * Here we receive message and put them to a worker thread for handling * If the output of handling the message is a message, then we send those * using the same thread. */ byte[] buf = new byte[transport.getReceiveLimit()]; int length = transport.receive(buf, 0, buf.length, waitMillis); if (length >= 0) { byte[] handled = Arrays.copyOf(buf, length); workPool.submit(() -> { try { List<byte[]> data = sctpService.handleRequest(handled); data.forEach(this::putDataOnWire); } catch (Exception e) { logger.error("Failed handling message: ", e); } }); logger.debug("Input: " + Hex.encodeHexString(handled)); } } } catch (Exception e) { logger.error("Com error:", e); logger.info("Shutting down, we cannot continue here"); running = false; //Need to quit channel now } } workPool.shutdown(); }
From source file:org.necsave.NecsaveTransport.java
public void broadcast(Message msg) throws Exception { ByteArrayOutputStream baos = new ByteArrayOutputStream(); ProtoOutputStream pos = new ProtoOutputStream(baos); msg.setMedium(MEDIUM.IP_BROADCAST);//w w w .jav a2s. c om int length = msg.serialize(pos); DatagramPacket packet = new DatagramPacket(baos.toByteArray(), length); for (int i = 0; i < 3; i++) packet.setSocketAddress(new InetSocketAddress("255.255.255.255", broadcastPort + i)); serverSocket.send(packet); }
From source file:org.springframework.integration.ip.udp.UdpChannelAdapterTests.java
@SuppressWarnings("unchecked") @Test//from w w w. ja v a2s . c o m public void testUnicastReceiver() throws Exception { QueueChannel channel = new QueueChannel(2); int port = SocketUtils.findAvailableUdpSocket(); UnicastReceivingChannelAdapter adapter = new UnicastReceivingChannelAdapter(port); adapter.setOutputChannel(channel); // SocketUtils.setLocalNicIfPossible(adapter); adapter.start(); SocketTestUtils.waitListening(adapter); Message<byte[]> message = MessageBuilder.withPayload("ABCD".getBytes()).build(); DatagramPacketMessageMapper mapper = new DatagramPacketMessageMapper(); DatagramPacket packet = mapper.fromMessage(message); packet.setSocketAddress(new InetSocketAddress("localhost", port)); new DatagramSocket(SocketUtils.findAvailableUdpSocket()).send(packet); Message<byte[]> receivedMessage = (Message<byte[]>) channel.receive(2000); assertEquals(new String(message.getPayload()), new String(receivedMessage.getPayload())); }
From source file:org.springframework.integration.ip.udp.UdpChannelAdapterTests.java
@SuppressWarnings("unchecked") @Test//from w w w .ja v a 2s. c om public void testUnicastReceiverWithReply() throws Exception { QueueChannel channel = new QueueChannel(2); int port = SocketUtils.findAvailableUdpSocket(); UnicastReceivingChannelAdapter adapter = new UnicastReceivingChannelAdapter(port); adapter.setOutputChannel(channel); adapter.start(); SocketTestUtils.waitListening(adapter); Message<byte[]> message = MessageBuilder.withPayload("ABCD".getBytes()).build(); DatagramPacketMessageMapper mapper = new DatagramPacketMessageMapper(); DatagramPacket packet = mapper.fromMessage(message); packet.setSocketAddress(new InetSocketAddress("localhost", port)); final DatagramSocket socket = new DatagramSocket(SocketUtils.findAvailableUdpSocket()); socket.send(packet); final AtomicReference<DatagramPacket> theAnswer = new AtomicReference<DatagramPacket>(); final CountDownLatch receiverReadyLatch = new CountDownLatch(1); final CountDownLatch replyReceivedLatch = new CountDownLatch(1); //main thread sends the reply using the headers, this thread will receive it Executors.newSingleThreadExecutor().execute(new Runnable() { public void run() { DatagramPacket answer = new DatagramPacket(new byte[2000], 2000); try { receiverReadyLatch.countDown(); socket.receive(answer); theAnswer.set(answer); replyReceivedLatch.countDown(); } catch (IOException e) { e.printStackTrace(); } } }); Message<byte[]> receivedMessage = (Message<byte[]>) channel.receive(2000); assertEquals(new String(message.getPayload()), new String(receivedMessage.getPayload())); String replyString = "reply:" + System.currentTimeMillis(); byte[] replyBytes = replyString.getBytes(); DatagramPacket reply = new DatagramPacket(replyBytes, replyBytes.length); reply.setSocketAddress( new InetSocketAddress((String) receivedMessage.getHeaders().get(IpHeaders.IP_ADDRESS), (Integer) receivedMessage.getHeaders().get(IpHeaders.PORT))); assertTrue(receiverReadyLatch.await(10, TimeUnit.SECONDS)); new DatagramSocket().send(reply); assertTrue(replyReceivedLatch.await(10, TimeUnit.SECONDS)); DatagramPacket answerPacket = theAnswer.get(); assertNotNull(answerPacket); assertEquals(replyString, new String(answerPacket.getData(), 0, answerPacket.getLength())); }
From source file:org.springframework.integration.ip.udp.UdpChannelAdapterTests.java
@SuppressWarnings("unchecked") @Test//from w ww. jav a 2 s. co m @Ignore public void testMulticastReceiver() throws Exception { QueueChannel channel = new QueueChannel(2); int port = SocketUtils.findAvailableUdpSocket(); MulticastReceivingChannelAdapter adapter = new MulticastReceivingChannelAdapter("225.6.7.8", port); adapter.setOutputChannel(channel); String nic = SocketTestUtils.chooseANic(true); if (nic == null) { // no multicast support LogFactory.getLog(this.getClass()).error("No Multicast support"); return; } adapter.setLocalAddress(nic); adapter.start(); SocketTestUtils.waitListening(adapter); Message<byte[]> message = MessageBuilder.withPayload("ABCD".getBytes()).build(); DatagramPacketMessageMapper mapper = new DatagramPacketMessageMapper(); DatagramPacket packet = mapper.fromMessage(message); packet.setSocketAddress(new InetSocketAddress("225.6.7.8", port)); new DatagramSocket(0, Inet4Address.getByName(nic)).send(packet); Message<byte[]> receivedMessage = (Message<byte[]>) channel.receive(2000); assertNotNull(receivedMessage); assertEquals(new String(message.getPayload()), new String(receivedMessage.getPayload())); }
From source file:org.springframework.integration.ip.udp.UdpChannelAdapterTests.java
@Test public void testUnicastReceiverException() throws Exception { SubscribableChannel channel = new DirectChannel(); int port = SocketUtils.findAvailableUdpSocket(); UnicastReceivingChannelAdapter adapter = new UnicastReceivingChannelAdapter(port); adapter.setOutputChannel(channel);//from ww w .j a v a2 s .com // SocketUtils.setLocalNicIfPossible(adapter); adapter.setOutputChannel(channel); ServiceActivatingHandler handler = new ServiceActivatingHandler(new FailingService()); channel.subscribe(handler); QueueChannel errorChannel = new QueueChannel(); adapter.setErrorChannel(errorChannel); adapter.start(); SocketTestUtils.waitListening(adapter); Message<byte[]> message = MessageBuilder.withPayload("ABCD".getBytes()).build(); DatagramPacketMessageMapper mapper = new DatagramPacketMessageMapper(); DatagramPacket packet = mapper.fromMessage(message); packet.setSocketAddress(new InetSocketAddress("localhost", port)); new DatagramSocket(SocketUtils.findAvailableUdpSocket()).send(packet); Message<?> receivedMessage = errorChannel.receive(2000); assertNotNull(receivedMessage); assertEquals("Failed", ((Exception) receivedMessage.getPayload()).getCause().getMessage()); }
From source file:org.zxg.network.dhtcrawler.Crawler.java
@Override protected void sendUdp(UdpMsg msg) throws IOException { DatagramPacket datagramPacket = new DatagramPacket(msg.data, msg.data.length); datagramPacket.setSocketAddress(new InetSocketAddress(msg.addr.ip, msg.addr.port)); socket.send(datagramPacket);// www.j ava 2s .c om }