Example usage for org.springframework.integration.ip.udp UnicastSendingMessageHandler UnicastSendingMessageHandler

Introduction

In this page you can find the example usage for org.springframework.integration.ip.udp UnicastSendingMessageHandler UnicastSendingMessageHandler.

Prototype

public UnicastSendingMessageHandler(String host, int port, boolean lengthCheck, boolean acknowledge,
        String ackHost, int ackPort, int ackTimeout) 

Source Link

Document

Add a length and/or acknowledgment request to packets.

Usage

From source file:org.springframework.integration.ip.udp.DatagramPacketSendingHandlerTests.java

@Test
public void verifySendWithAck() throws Exception {

    final List<Integer> openPorts = SocketUtils.findAvailableUdpSockets(SocketUtils.getRandomSeedPort(), 2);

    final int testPort = openPorts.get(0);
    final int ackPort = openPorts.get(1);

    byte[] buffer = new byte[1000];
    final DatagramPacket receivedPacket = new DatagramPacket(buffer, buffer.length);
    final CountDownLatch latch1 = new CountDownLatch(1);
    final CountDownLatch latch2 = new CountDownLatch(1);
    UnicastSendingMessageHandler handler = new UnicastSendingMessageHandler("localhost", testPort, true, true,
            "localhost", ackPort, 5000);
    handler.afterPropertiesSet();/*from  w ww .j a v  a 2s .c  o m*/
    Executors.newSingleThreadExecutor().execute(new Runnable() {
        public void run() {
            try {
                DatagramSocket socket = new DatagramSocket(testPort);
                latch1.countDown();
                socket.receive(receivedPacket);
                socket.close();
                DatagramPacketMessageMapper mapper = new DatagramPacketMessageMapper();
                mapper.setAcknowledge(true);
                mapper.setLengthCheck(true);
                Message<byte[]> message = mapper.toMessage(receivedPacket);
                Object id = message.getHeaders().get(IpHeaders.ACK_ID);
                byte[] ack = id.toString().getBytes();
                DatagramPacket ackPack = new DatagramPacket(ack, ack.length,
                        new InetSocketAddress("localHost", ackPort));
                DatagramSocket out = new DatagramSocket();
                out.send(ackPack);
                out.close();
                latch2.countDown();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
    latch1.await(3000, TimeUnit.MILLISECONDS);
    String payload = "foobar";
    handler.handleMessage(MessageBuilder.withPayload(payload).build());
    assertTrue(latch2.await(10000, TimeUnit.MILLISECONDS));
    byte[] src = receivedPacket.getData();
    int length = receivedPacket.getLength();
    int offset = receivedPacket.getOffset();
    byte[] dest = new byte[6];
    System.arraycopy(src, offset + length - 6, dest, 0, 6);
    assertEquals(payload, new String(dest));
    handler.shutDown();
}

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From source file:org.springframework.integration.ip.udp.UdpChannelAdapterTests.java

@SuppressWarnings("unchecked")
@Test/*from   www  .  j a  va 2 s . c  o  m*/
public void testUnicastSender() throws Exception {
    QueueChannel channel = new QueueChannel(2);
    int port = SocketUtils.findAvailableUdpSocket();
    UnicastReceivingChannelAdapter adapter = new UnicastReceivingChannelAdapter(port);
    adapter.setBeanName("test");
    adapter.setOutputChannel(channel);
    //      SocketUtils.setLocalNicIfPossible(adapter);
    adapter.start();
    SocketTestUtils.waitListening(adapter);

    //      String whichNic = SocketUtils.chooseANic(false);
    UnicastSendingMessageHandler handler = new UnicastSendingMessageHandler("localhost", port, false, true,
            "localhost",
            //            whichNic,
            SocketUtils.findAvailableUdpSocket(), 5000);
    //      handler.setLocalAddress(whichNic);
    handler.afterPropertiesSet();
    Message<byte[]> message = MessageBuilder.withPayload("ABCD".getBytes()).build();
    handler.handleMessage(message);
    Message<byte[]> receivedMessage = (Message<byte[]>) channel.receive(2000);
    assertEquals(new String(message.getPayload()), new String(receivedMessage.getPayload()));
}

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