List of usage examples for java.net DatagramPacket DatagramPacket
public DatagramPacket(byte buf[], int length, InetAddress address, int port)
From source file:org.apache.hadoop.metrics2.ovis.OvisSink.java
private void sendToOvis(StringBuilder sb) { sb.append("\0"); String s = sb.toString();//from w ww . j a v a 2 s . com byte[] outMetrics = s.getBytes(); try { DatagramPacket outPacket = new DatagramPacket(outMetrics, outMetrics.length, ldmsSamplerAddr, ldmsSamplerPort); socket.send(outPacket); } catch (Exception e) { throw new MetricsException("OvisSink: Error sending to LDMS. " + e.getMessage()); } }
From source file:org.midonet.util.netty.TestServerFrontEndUPD.java
private DatagramPacket sendMSG(byte[] msg, int port) throws Exception { DatagramSocket clientSocket = new DatagramSocket(); InetAddress IPAddress = InetAddress.getByName("localhost"); DatagramPacket sendPacket = new DatagramPacket(msg, msg.length, IPAddress, port); clientSocket.send(sendPacket);/*w ww . ja v a 2s . c om*/ clientSocket.close(); return sendPacket; }
From source file:org.apache.jcs.auxiliary.lateral.socket.tcp.discovery.UDPDiscoverySender.java
/** * Send messages./* w w w. ja va 2s . co m*/ * * @param message * @throws IOException */ public void send(UDPDiscoveryMessage message) throws IOException { if (this.m_localSocket == null) { throw new IOException("Socket is null, cannot send message."); } // TODO when we move to jdk 1.4 reinstate the isClosed check // if (this.m_localSocket.isClosed() ) // { // throw new IOException( "Socket is closed, cannot send message." ); // } if (log.isDebugEnabled()) { log.debug("sending UDPDiscoveryMessage, message = " + message); } try { // write the object to a byte array. final MyByteArrayOutputStream byteStream = new MyByteArrayOutputStream(); final ObjectOutputStream objectStream = new ObjectOutputStream(byteStream); objectStream.writeObject(message); objectStream.flush(); final byte[] bytes = byteStream.getBytes(); // put the byte array in a packet final DatagramPacket packet = new DatagramPacket(bytes, bytes.length, m_multicastAddress, m_multicastPort); m_localSocket.send(packet); } catch (IOException e) { log.error("Error sending message", e); throw e; } }
From source file:MulticastClient.java
public void run() { while (moreQuotes) { try { byte[] buf = new byte[256]; // construct quote String dString = null; if (in == null) dString = new Date().toString(); else dString = getNextQuote(); buf = dString.getBytes(); // send it InetAddress group = InetAddress.getByName("230.0.0.1"); DatagramPacket packet = new DatagramPacket(buf, buf.length, group, 4446); socket.send(packet);/* ww w . jav a 2s . c om*/ // sleep for a while try { sleep((long) (Math.random() * FIVE_SECONDS)); } catch (InterruptedException e) { } } catch (IOException e) { e.printStackTrace(); moreQuotes = false; } } socket.close(); }
From source file:org.nuxeo.runtime.detection.MulticastDetector.java
private DatagramPacket createHeartBeat() { byte[] bytes = identity.getBytes(); return new DatagramPacket(bytes, bytes.length, groupAddr, groupPort); }
From source file:CTmousetrack.java
public static void main(String[] args) { String outLoc = new String("." + File.separator + "CTdata"); // Location of the base output data folder; only used when writing out CT data to a local folder String srcName = "CTmousetrack"; // name of the output CT source long blockPts = 10; // points per block flush long sampInterval = 10; // time between sampling updates, msec double trimTime = 0.0; // amount of data to keep (trim time), sec boolean debug = false; // turn on debug? // Specify the CT output connection CTWriteMode writeMode = CTWriteMode.LOCAL; // The selected mode for writing out CT data String serverHost = ""; // Server (FTP or HTTP/S) host:port String serverUser = ""; // Server (FTP or HTTPS) username String serverPassword = ""; // Server (FTP or HTTPS) password // For UDP output mode DatagramSocket udpServerSocket = null; InetAddress udpServerAddress = null; String udpHost = ""; int udpPort = -1; // Concatenate all of the CTWriteMode types String possibleWriteModes = ""; for (CTWriteMode wm : CTWriteMode.values()) { possibleWriteModes = possibleWriteModes + ", " + wm.name(); }/*from www . j a v a 2s . com*/ // Remove ", " from start of string possibleWriteModes = possibleWriteModes.substring(2); // // Argument processing using Apache Commons CLI // // 1. Setup command line options Options options = new Options(); options.addOption("h", "help", false, "Print this message."); options.addOption(Option.builder("o").argName("base output dir").hasArg().desc( "Base output directory when writing data to local folder (i.e., this is the location of CTdata folder); default = \"" + outLoc + "\".") .build()); options.addOption(Option.builder("s").argName("source name").hasArg() .desc("Name of source to write data to; default = \"" + srcName + "\".").build()); options.addOption(Option.builder("b").argName("points per block").hasArg() .desc("Number of points per block; UDP output mode will use 1 point/block; default = " + Long.toString(blockPts) + ".") .build()); options.addOption(Option.builder("dt").argName("samp interval msec").hasArg() .desc("Sampling period in msec; default = " + Long.toString(sampInterval) + ".").build()); options.addOption(Option.builder("t").argName("trim time sec").hasArg().desc( "Trim (ring-buffer loop) time (sec); this is only used when writing data to local folder; specify 0 for indefinite; default = " + Double.toString(trimTime) + ".") .build()); options.addOption( Option.builder("w").argName("write mode").hasArg() .desc("Type of write connection; one of " + possibleWriteModes + "; all but UDP mode write out to CT; default = " + writeMode.name() + ".") .build()); options.addOption(Option.builder("host").argName("host[:port]").hasArg() .desc("Host:port when writing via FTP, HTTP, HTTPS, UDP.").build()); options.addOption(Option.builder("u").argName("username,password").hasArg() .desc("Comma-delimited username and password when writing to CT via FTP or HTTPS.").build()); options.addOption("x", "debug", false, "Enable CloudTurbine debug output."); // 2. Parse command line options CommandLineParser parser = new DefaultParser(); CommandLine line = null; try { line = parser.parse(options, args); } catch (ParseException exp) { // oops, something went wrong System.err.println("Command line argument parsing failed: " + exp.getMessage()); return; } // 3. Retrieve the command line values if (line.hasOption("help")) { // Display help message and quit HelpFormatter formatter = new HelpFormatter(); formatter.setWidth(120); formatter.printHelp("CTmousetrack", "", options, "NOTE: UDP output is a special non-CT output mode where single x,y points are sent via UDP to the specified host:port."); return; } outLoc = line.getOptionValue("o", outLoc); if (!outLoc.endsWith("\\") && !outLoc.endsWith("/")) { outLoc = outLoc + File.separator; } // Make sure the base output folder location ends in "CTdata" if (!outLoc.endsWith("CTdata\\") && !outLoc.endsWith("CTdata/")) { outLoc = outLoc + "CTdata" + File.separator; } srcName = line.getOptionValue("s", srcName); blockPts = Long.parseLong(line.getOptionValue("b", Long.toString(blockPts))); sampInterval = Long.parseLong(line.getOptionValue("dt", Long.toString(sampInterval))); trimTime = Double.parseDouble(line.getOptionValue("t", Double.toString(trimTime))); // Type of output connection String writeModeStr = line.getOptionValue("w", writeMode.name()); boolean bMatch = false; for (CTWriteMode wm : CTWriteMode.values()) { if (wm.name().toLowerCase().equals(writeModeStr.toLowerCase())) { writeMode = wm; bMatch = true; } } if (!bMatch) { System.err.println("Unrecognized write mode, \"" + writeModeStr + "\"; write mode must be one of " + possibleWriteModes); System.exit(0); } if (writeMode != CTWriteMode.LOCAL) { // User must have specified the host // If FTP or HTTPS, they may also specify username/password serverHost = line.getOptionValue("host", serverHost); if (serverHost.isEmpty()) { System.err.println( "When using write mode \"" + writeModeStr + "\", you must specify the server host."); System.exit(0); } if (writeMode == CTWriteMode.UDP) { // Force blockPts to be 1 blockPts = 1; // User must have specified both host and port int colonIdx = serverHost.indexOf(':'); if ((colonIdx == -1) || (colonIdx >= serverHost.length() - 1)) { System.err.println( "For UDP output mode, both the host and port (<host>:<port>)) must be specified."); System.exit(0); } udpHost = serverHost.substring(0, colonIdx); String udpPortStr = serverHost.substring(colonIdx + 1); try { udpPort = Integer.parseInt(udpPortStr); } catch (NumberFormatException nfe) { System.err.println("The UDP port must be a positive integer."); System.exit(0); } } if ((writeMode == CTWriteMode.FTP) || (writeMode == CTWriteMode.HTTPS)) { String userpassStr = line.getOptionValue("u", ""); if (!userpassStr.isEmpty()) { // This string should be comma-delimited username and password String[] userpassCSV = userpassStr.split(","); if (userpassCSV.length != 2) { System.err.println("When specifying a username and password for write mode \"" + writeModeStr + "\", separate the username and password by a comma."); System.exit(0); } serverUser = userpassCSV[0]; serverPassword = userpassCSV[1]; } } } debug = line.hasOption("debug"); System.err.println("CTmousetrack parameters:"); System.err.println("\toutput mode = " + writeMode.name()); if (writeMode == CTWriteMode.UDP) { System.err.println("\twrite to " + udpHost + ":" + udpPort); } else { System.err.println("\tsource = " + srcName); System.err.println("\ttrim time = " + trimTime + " sec"); } System.err.println("\tpoints per block = " + blockPts); System.err.println("\tsample interval = " + sampInterval + " msec"); try { // // Setup CTwriter or UDP output // CTwriter ctw = null; CTinfo.setDebug(debug); if (writeMode == CTWriteMode.LOCAL) { ctw = new CTwriter(outLoc + srcName, trimTime); System.err.println("\tdata will be written to local folder \"" + outLoc + "\""); } else if (writeMode == CTWriteMode.FTP) { CTftp ctftp = new CTftp(srcName); try { ctftp.login(serverHost, serverUser, serverPassword); } catch (Exception e) { throw new IOException( new String("Error logging into FTP server \"" + serverHost + "\":\n" + e.getMessage())); } ctw = ctftp; // upcast to CTWriter System.err.println("\tdata will be written to FTP server at " + serverHost); } else if (writeMode == CTWriteMode.HTTP) { // Don't send username/pw in HTTP mode since they will be unencrypted CThttp cthttp = new CThttp(srcName, "http://" + serverHost); ctw = cthttp; // upcast to CTWriter System.err.println("\tdata will be written to HTTP server at " + serverHost); } else if (writeMode == CTWriteMode.HTTPS) { CThttp cthttp = new CThttp(srcName, "https://" + serverHost); // Username/pw are optional for HTTPS mode; only use them if username is not empty if (!serverUser.isEmpty()) { try { cthttp.login(serverUser, serverPassword); } catch (Exception e) { throw new IOException(new String( "Error logging into HTTP server \"" + serverHost + "\":\n" + e.getMessage())); } } ctw = cthttp; // upcast to CTWriter System.err.println("\tdata will be written to HTTPS server at " + serverHost); } else if (writeMode == CTWriteMode.UDP) { try { udpServerSocket = new DatagramSocket(); } catch (SocketException se) { System.err.println("Error creating socket for UDP:\n" + se); System.exit(0); } try { udpServerAddress = InetAddress.getByName(udpHost); } catch (UnknownHostException uhe) { System.err.println("Error getting UDP server host address:\n" + uhe); System.exit(0); } } if (writeMode != CTWriteMode.UDP) { ctw.setBlockMode(blockPts > 1, blockPts > 1); ctw.autoFlush(0); // no autoflush ctw.autoSegment(1000); } // screen dims Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); double width = screenSize.getWidth(); double height = screenSize.getHeight(); // use Map for consolidated putData Map<String, Object> cmap = new LinkedHashMap<String, Object>(); // loop and write some output for (int i = 0; i < 1000000; i++) { // go until killed long currentTime = System.currentTimeMillis(); Point mousePos = MouseInfo.getPointerInfo().getLocation(); float x_pt = (float) (mousePos.getX() / width); // normalize float y_pt = (float) ((height - mousePos.getY()) / height); // flip Y (so bottom=0) if (writeMode != CTWriteMode.UDP) { // CT output mode ctw.setTime(currentTime); cmap.clear(); cmap.put("x", x_pt); cmap.put("y", y_pt); ctw.putData(cmap); if (((i + 1) % blockPts) == 0) { ctw.flush(); System.err.print("."); } } else { // UDP output mode // We force blockPts to be 1 for UDP output mode, i.e. we "flush" the data every time // Write the following data (21 bytes total): // header = "MOUSE", 5 bytes // current time, long, 8 bytes // 2 floats (x,y) 4 bytes each, 8 bytes int len = 21; ByteBuffer bb = ByteBuffer.allocate(len); String headerStr = "MOUSE"; bb.put(headerStr.getBytes("UTF-8")); bb.putLong(currentTime); bb.putFloat(x_pt); bb.putFloat(y_pt); // Might be able to use the following, but not sure: // byte[] sendData = bb.array(); byte[] sendData = new byte[len]; bb.position(0); bb.get(sendData, 0, len); DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, udpServerAddress, udpPort); try { udpServerSocket.send(sendPacket); } catch (IOException e) { System.err.println("Test server caught exception trying to send data to UDP client:\n" + e); } System.err.print("."); } try { Thread.sleep(sampInterval); } catch (Exception e) { } ; } if (writeMode != CTWriteMode.UDP) { ctw.flush(); // wrap up } } catch (Exception e) { System.err.println("CTmousetrack exception: " + e); e.printStackTrace(); } }
From source file:net.pms.network.UPNPHelper.java
/** * Send reply.//from w w w. j ava 2 s . c o m * * @param host the host * @param port the port * @param msg the msg * @throws IOException Signals that an I/O exception has occurred. */ private static void sendReply(String host, int port, String msg) { DatagramSocket datagramSocket = null; try { datagramSocket = new DatagramSocket(); InetAddress inetAddr = InetAddress.getByName(host); DatagramPacket dgmPacket = new DatagramPacket(msg.getBytes(), msg.length(), inetAddr, port); logger.trace( "Sending this reply [" + host + ":" + port + "]: " + StringUtils.replace(msg, CRLF, "<CRLF>")); datagramSocket.send(dgmPacket); } catch (Exception e) { logger.info(e.getMessage()); logger.debug("Error sending reply", e); } finally { if (datagramSocket != null) { datagramSocket.close(); } } }
From source file:org.eredlab.g4.ccl.net.tftp.TFTPAckPacket.java
/*** * Creates a UDP datagram containing all the TFTP * acknowledgement packet data in the proper format. * This is a method exposed to the programmer in case he * wants to implement his own TFTP client instead of using * the {@link org.apache.commons.net.tftp.TFTPClient} * class. Under normal circumstances, you should not have a need to call this * method.//from w w w. j a v a 2 s. c o m * <p> * @return A UDP datagram containing the TFTP acknowledgement packet. ***/ public DatagramPacket newDatagram() { byte[] data; data = new byte[4]; data[0] = 0; data[1] = (byte) _type; data[2] = (byte) ((_blockNumber & 0xffff) >> 8); data[3] = (byte) (_blockNumber & 0xff); return new DatagramPacket(data, data.length, _address, _port); }
From source file:com.iiitd.networking.UDPMessenger.java
/** * Sends a broadcast message (TAG EPOCH_TIME message). Opens a new socket in case it's closed. * @param message the message to send (multicast). It can't be null or 0-characters long. * @return//from www . ja v a 2 s . co m * @throws IllegalArgumentException */ public boolean sendMessage(String message) throws IllegalArgumentException { if (message == null || message.length() == 0) throw new IllegalArgumentException(); // Check for WiFi connectivity ConnectivityManager connManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (mWifi == null || !mWifi.isConnected()) { Log.d(DEBUG_TAG, "Sorry! You need to be in a WiFi network in order to send UDP multicast packets. Aborting."); return false; } // Check for IP address WifiManager wim = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); int ip = wim.getConnectionInfo().getIpAddress(); // Create the send socket if (socket == null) { try { socket = new DatagramSocket(); } catch (SocketException e) { Log.d(DEBUG_TAG, "There was a problem creating the sending socket. Aborting."); e.printStackTrace(); return false; } } // Build the packet DatagramPacket packet; Message msg = new Message(TAG, message); byte data[] = msg.toString().getBytes(); WifiInfo wifiInfo = wim.getConnectionInfo(); int ipa = wifiInfo.getIpAddress(); String ipAddress = Formatter.formatIpAddress(ipa); try { // packet = new DatagramPacket(data, data.length, InetAddress.getByName(ipToString(ip, true)), MULTICAST_PORT); packet = new DatagramPacket(data, data.length, InetAddress.getByName(ipAddress), MULTICAST_PORT); } catch (UnknownHostException e) { Log.d(DEBUG_TAG, "It seems that " + ipToString(ip, true) + " is not a valid ip! Aborting."); e.printStackTrace(); return false; } try { socket.send(packet); } catch (IOException e) { Log.d(DEBUG_TAG, "There was an error sending the UDP packet. Aborted."); e.printStackTrace(); return false; } return true; }
From source file:com.mendhak.gpslogger.common.OpenGTSClient.java
public void sendRAW(String id, String accountName, SerializableLocation[] locations) throws Exception { for (SerializableLocation loc : locations) { if (Utilities.IsNullOrEmpty(accountName)) { accountName = id;// www. j a va2 s. c o m } String message = accountName + "/" + id + "/" + GPRMCEncode(loc); DatagramSocket socket = new DatagramSocket(); byte[] buffer = message.getBytes(); DatagramPacket packet = new DatagramPacket(buffer, buffer.length, InetAddress.getByName(server), port); tracer.debug("Sending UDP " + message); socket.send(packet); socket.close(); } }