Example usage for java.net DatagramPacket DatagramPacket

Introduction

In this page you can find the example usage for java.net DatagramPacket DatagramPacket.

Prototype

public DatagramPacket(byte buf[], int length, InetAddress address, int port) 

Source Link

Document

Constructs a datagram packet for sending packets of length length to the specified port number on the specified host.

Usage

From source file:org.opennms.netmgt.syslogd.SyslogdLoadIT.java

@Test
@Transactional//  w  ww.  j ava  2s. com
public void testNGSyslog() throws Exception {
    loadSyslogConfiguration("/etc/syslogd-syslogng-configuration.xml");

    startSyslogdJavaNet();

    m_eventCounter.anticipate();

    InetAddress address = InetAddress.getLocalHost();

    // handle an invalid packet
    byte[] bytes = "<34>main: 2010-08-19 localhost foo0: load test 0 on tty1\0".getBytes();
    DatagramPacket pkt = new DatagramPacket(bytes, bytes.length, address, SyslogClient.PORT);
    new SyslogConnectionHandlerDefaultImpl().handleSyslogConnection(new SyslogConnection(pkt, m_config));

    // handle a valid packet
    bytes = "<34>monkeysatemybrain!\0".getBytes();
    pkt = new DatagramPacket(bytes, bytes.length, address, SyslogClient.PORT);
    new SyslogConnectionHandlerDefaultImpl().handleSyslogConnection(new SyslogConnection(pkt, m_config));

    m_eventCounter.waitForFinish(120000);

    assertEquals(1, m_eventCounter.getCount());
}

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From source file:com.all.landownloader.discovery.LanDiscoverySocket.java

public void reply(InetAddress address) throws IllegalArgumentException {
    try {// ww w.j a  v a  2  s .  co  m
        byte[] buf = createPacket(REPLY_MSG);
        DatagramPacket packet = new DatagramPacket(buf, buf.length, address, PORT);
        DatagramSocket socket = new DatagramSocket();
        socket.send(packet);
        socket.close();
    } catch (IOException e) {
    }
}

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From source file:com.all.landownloader.discovery.LanDiscoverySocket.java

private void announce() throws IllegalArgumentException {
    try {/* www.jav  a 2 s  . c o m*/
        byte[] buf = createPacket(ANNOUNCE_MSG);
        DatagramPacket packet = new DatagramPacket(buf, buf.length, addressGroup, PORT);
        MulticastSocket socket = new MulticastSocket();
        socket.send(packet);
        packet = new DatagramPacket(buf, buf.length, broadcast, PORT);
        socket.send(packet);
        socket.close();
    } catch (Exception e) {
    }

}

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From source file:net.sbbi.upnp.jmx.UPNPMBeanDevicesDiscoveryHandler.java

public void run() {
    InetAddress group = null;/*from w  w w.j  a  v  a  2s.  c om*/
    try {
        group = InetAddress.getByName("239.255.255.250");
        skt = new java.net.MulticastSocket(1900);
        skt.setInterface(bindAddress.getAddress());
        skt.joinGroup(group);
    } catch (IOException ex) {
        log.error("Error during multicast socket creation, thread cannot start", ex);
        return;
    }
    isRunning = true;
    while (isRunning) {
        try {
            byte[] buffer = new byte[4096];
            DatagramPacket packet = new DatagramPacket(buffer, buffer.length, group, bindAddress.getPort());
            skt.receive(packet);
            String received = new String(packet.getData(), 0, packet.getLength());
            if (log.isDebugEnabled())
                log.debug("Received message:\n" + received);
            HttpRequest req = new HttpRequest(received);
            if (req.getHttpCommand().equals("M-SEARCH")) {
                String man = req.getHTTPHeaderField("MAN");
                if (man.equals("\"ssdp:discover\"")) {
                    String searchTarget = req.getHTTPHeaderField("ST");
                    // TODO check ALL devices search target
                    //if ( searchTarget.equals( Discovery.ALL_DEVICES ) ) {
                    if (searchTarget.equals(Discovery.ROOT_DEVICES)) {
                        java.net.MulticastSocket multi = new java.net.MulticastSocket();
                        multi.setInterface(bindAddress.getAddress());
                        for (Iterator i = handledDevices.iterator(); i.hasNext();) {
                            UPNPMBeanDevice dv = (UPNPMBeanDevice) i.next();
                            List packets = getReplyMessages(dv, false, dv.getSSDPAliveDelay());
                            for (int z = 0; z < packets.size(); z++) {
                                String pack = (String) packets.get(z);
                                if (log.isDebugEnabled())
                                    log.debug("Sending http reply message on " + packet.getAddress() + ":"
                                            + packet.getPort() + " multicast address:\n" + pack.toString());
                                byte[] pk = pack.getBytes();
                                multi.setTimeToLive(dv.getSSDPTTL());
                                multi.send(new DatagramPacket(pk, pk.length, packet.getAddress(),
                                        packet.getPort()));
                            }
                        }
                        multi.close();
                    } else {
                        // TODO check a specific search target
                    }
                }
            }
        } catch (IOException ex) {
            if (isRunning) {
                log.error("Error during multicast socket IO operations", ex);
            }
        }
    }
}

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From source file:com.all.landownloader.discovery.LanDiscoverySocket.java

public void announceDeath() throws IllegalArgumentException {
    try {// w  w w  .  j av  a  2s.  c  o m
        byte[] buf = createPacket(BYE_MSG);
        DatagramPacket packet = new DatagramPacket(buf, buf.length, addressGroup, PORT);
        MulticastSocket socket = new MulticastSocket();
        socket.send(packet);
        packet = new DatagramPacket(buf, buf.length, broadcast, PORT);
        socket.send(packet);
        socket.close();
    } catch (IOException e) {
    }
}

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From source file:org.openchaos.android.fooping.service.PingService.java

private void sendMessage(final JSONObject json) {
    boolean encrypt = prefs.getBoolean("SendAES", false);
    boolean compress = prefs.getBoolean("SendGZIP", false);
    String exchangeHost = prefs.getString("ExchangeHost", null);
    int exchangePort = Integer.valueOf(prefs.getString("ExchangePort", "-1"));

    if (encrypt) {
        if (skeySpec == null) {
            try {
                skeySpec = new SecretKeySpec(MessageDigest.getInstance("SHA-256")
                        .digest(prefs.getString("ExchangeKey", null).getBytes("US-ASCII")), "AES");
            } catch (Exception e) {
                Log.e(tag, e.toString());
                e.printStackTrace();/*w w w .ja v  a 2  s .c  o  m*/
            }
        }

        if (cipher == null) {
            try {
                cipher = Cipher.getInstance("AES/CFB8/NoPadding");
            } catch (Exception e) {
                Log.e(tag, e.toString());
                e.printStackTrace();
            }
        }

        if (skeySpec == null || cipher == null) {
            Log.e(tag, "Encryption requested but not available");
            throw new AssertionError();
        }
    }

    if (exchangeHost == null || exchangePort <= 0 || exchangePort >= 65536) {
        Log.e(tag, "Invalid server name or port");
        throw new AssertionError();
    }

    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        CipherOutputStream cos = null;
        GZIPOutputStream zos = null;

        // TODO: send protocol header to signal compression & encryption

        if (encrypt) {
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
            cos = new CipherOutputStream(baos, cipher);

            // write iv block
            baos.write(cipher.getIV());
        }

        final byte[] message = new JSONArray().put(json).toString().getBytes();

        if (compress) {
            zos = new GZIPOutputStream((encrypt) ? (cos) : (baos));
            zos.write(message);
            zos.finish();
            zos.close();
            if (encrypt) {
                cos.close();
            }
        } else if (encrypt) {
            cos.write(message);
            cos.close();
        } else {
            baos.write(message);
        }

        baos.flush();
        final byte[] output = baos.toByteArray();
        baos.close();

        // path MTU is the actual limit here, not only local MTU
        // TODO: make packet fragmentable (clear DF flag)
        if (output.length > 1500) {
            Log.w(tag, "Message probably too long: " + output.length + " bytes");
        }

        DatagramSocket socket = new DatagramSocket();
        // socket.setTrafficClass(0x04 | 0x02); // IPTOS_RELIABILITY | IPTOS_LOWCOST
        socket.send(
                new DatagramPacket(output, output.length, InetAddress.getByName(exchangeHost), exchangePort));
        socket.close();
        Log.d(tag, "message sent: " + output.length + " bytes (raw: " + message.length + " bytes)");
    } catch (Exception e) {
        Log.e(tag, e.toString());
        e.printStackTrace();
    }
}

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From source file:vitro.vgw.wsiadapter.WSIAdapterCoap.java

private int dtnResourcesRequest(Node node) throws WSIAdapterException, IOException {
    int requestMsgId = UNDEFINED_COAP_MESSAGE_ID; // TODO: ??? we will use the packetID as a message ID to return.
    String proxyAddress = getProxyAddress(node);
    if (proxyAddress != null) {
        int packetID = UNDEFINED_COAP_MESSAGE_ID;
        do { //while loop to avoid a packetID that exists in the array that is to be ignored!
            packetID = random.nextInt(65535) + 1;
        } while (timedOut_DTN_CoapMessageIDsList.contains(Integer.valueOf(packetID))
                || packetID == UNDEFINED_COAP_MESSAGE_ID);

        String msgString = Integer.toString(packetID) + "#" + node.getId() + "#" + RESOURCE_REQ + "#wkc";
        byte[] msgBytes = new byte[Constants.DTN_MESSAGE_SIZE];
        msgBytes = msgString.getBytes();
        DatagramPacket sendPacket = new DatagramPacket(msgBytes, msgBytes.length,
                InetAddress.getByName(proxyAddress), Constants.PROXY_UDPFORWARDER_PORT);
        DatagramSocket clientSocket = new DatagramSocket();
        clientSocket.send(sendPacket);//  w  w w  .  ja  va 2  s .  c om
        clientSocket.close();
        requestMsgId = packetID;
        logger.info("Sent Request: " + msgString);
    } else {
        logger.warn("No available proxy for Node " + node.getId() + " is found");
        throw new WSIAdapterException("No available proxy for Node " + node.getId() + " is found");
    }
    return requestMsgId;
}

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From source file:com.clustercontrol.notify.util.SendSyslog.java

private void sendUdpMsg(InetAddress ipAddress, int port, String msg) throws IOException {
    DatagramSocket soc = null;//from w w w. j  a v  a  2 s . c  o  m
    try {
        // ??????
        soc = new DatagramSocket(); // ??
        DatagramPacket sendPacket = null; // 

        sendPacket = new DatagramPacket(msg.getBytes(), msg.getBytes().length, ipAddress, port);
        soc.send(sendPacket);
    } finally {
        if (soc != null) {
            soc.close();
        }
    }
}

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From source file:vitro.vgw.wsiadapter.WSIAdapterCoap.java

private int dtnObservationRequest(Node node, Resource resource) throws VitroGatewayException, IOException {
    int requestMsgId = UNDEFINED_COAP_MESSAGE_ID; // TODO: ??? we will use the packetID as a message ID to return.
    String proxyAddress = getProxyAddress(node);
    if (proxyAddress != null) {
        String moteUriResource = "";
        if (MoteResource.containsValue(resource)) {
            //moteUriResource += MoteResource.getMoteUriResource(resource);
            String theResourceName = MoteResource.getMoteUriResource(resource);
            if (theResourceName == null) {
                logger.error("unsupported resource");
                return UNDEFINED_COAP_MESSAGE_ID;
            }/*from w w  w. j  a va  2  s .co  m*/
            // FOR TCS adapter, we prefer the TEMPERATURE_TCS
            // FOR WLAB and HAI we prefer the TEMPERATURE_ALT
            // we do this check because the getMoteUriResource is making a reverse lookup in the hashmap (where two keys point to the same resource)
            if (theResourceName.compareToIgnoreCase(MoteResource.TEMPERATURE_TCS) == 0) {
                theResourceName = MoteResource.TEMPERATURE_ALT;
            }
            moteUriResource += theResourceName;

            int packetID = UNDEFINED_COAP_MESSAGE_ID;
            do { //while loop to avoid a packetID that exists in the array that is to be ignored!
                packetID = random.nextInt(65535) + 1;
            } while (timedOut_DTN_CoapMessageIDsList.contains(Integer.valueOf(packetID))
                    || packetID == UNDEFINED_COAP_MESSAGE_ID);

            String msgString = packetID + "#" + node.getId() + "#" + RESOURCE_REQ + "#" + moteUriResource;
            byte[] msgBytes = new byte[Constants.DTN_MESSAGE_SIZE];
            msgBytes = msgString.getBytes();
            DatagramPacket sendPacket = new DatagramPacket(msgBytes, msgBytes.length,
                    InetAddress.getByName(proxyAddress), Constants.PROXY_UDPFORWARDER_PORT);
            DatagramSocket clientSocket = new DatagramSocket();
            clientSocket.send(sendPacket);
            clientSocket.close();
            requestMsgId = packetID;
            logger.info("Sent Request: " + msgString);
        } else {
            logger.warn("No resource mapping for Node " + node.getId() + " and Resource " + resource.getName());
            throw new WSIAdapterException(
                    "No resource mapping for Node " + node.getId() + " and Resource " + resource.getName());
        }
    } else {
        logger.warn("No available proxy for Node " + node.getId() + " is found");
        throw new WSIAdapterException("No available proxy for Node " + node.getId() + " is found");
    }
    return requestMsgId;
}

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From source file:vitro.vgw.wsiadapter.WSIAdapterCoapHAI.java

private int dtnObservationRequest(Node node, Resource resource) throws VitroGatewayException, IOException {
    int requestMsgId = UNDEFINED_COAP_MESSAGE_ID; // TODO: ??? we will use the packetID as a message ID to return.
    String proxyAddress = getProxyAddress(node);
    if (proxyAddress != null) {
        String moteUriResource = "";
        if (MoteResource.containsValue(resource)) {
            //moteUriResource += MoteResource.getMoteUriResource(resource);
            String theResourceName = MoteResource.getMoteUriResource(resource);
            if (theResourceName == null) {
                logger.error("unsupported resource");
                return UNDEFINED_COAP_MESSAGE_ID;
            }//from ww  w .  ja  v  a  2  s. c om
            // FOR TCS adapter, we prefer the TEMPERATURE_TCS
            // FOR WLAB and HAI we prefer the TEMPERATURE_ALT
            // we do this check because the getMoteUriResource is making a reverse lookup in the hashmap (where two keys point to the same resource)
            if (theResourceName.compareToIgnoreCase(MoteResource.TEMPERATURE_TCS) == 0) {
                theResourceName = MoteResource.TEMPERATURE_ALT;
            }
            moteUriResource += theResourceName;
            int packetID = UNDEFINED_COAP_MESSAGE_ID;
            do { //while loop to avoid a packetID that exists in the array that is to be ignored!
                packetID = random.nextInt(65535) + 1;
            } while (timedOut_DTN_CoapMessageIDsList.contains(Integer.valueOf(packetID))
                    || packetID == UNDEFINED_COAP_MESSAGE_ID);

            String msgString = packetID + "#" + node.getId() + "#" + RESOURCE_REQ + "#" + moteUriResource;
            byte[] msgBytes = new byte[Constants.DTN_MESSAGE_SIZE];
            msgBytes = msgString.getBytes();
            DatagramPacket sendPacket = new DatagramPacket(msgBytes, msgBytes.length,
                    InetAddress.getByName(proxyAddress), Constants.PROXY_UDPFORWARDER_PORT);
            DatagramSocket clientSocket = new DatagramSocket();
            clientSocket.send(sendPacket);
            clientSocket.close();
            requestMsgId = packetID;
            logger.info("Sent Request: " + msgString);
        } else {
            logger.warn("No resource mapping for Node " + node.getId() + " and Resource " + resource.getName());
            throw new WSIAdapterException(
                    "No resource mapping for Node " + node.getId() + " and Resource " + resource.getName());
        }
    } else {
        logger.warn("No available proxy for Node " + node.getId() + " is found");
        throw new WSIAdapterException("No available proxy for Node " + node.getId() + " is found");
    }
    return requestMsgId;
}

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