public void execute() throws BuildException { try { InetAddress localHost = InetAddress.getLocalHost(); if (Validator.isNotNull(_hostAddressProperty)) { getProject().setUserProperty(_hostAddressProperty, localHost.getHostAddress()); } if (Validator.isNotNull(_hostNameProperty)) { getProject().setUserProperty(_hostNameProperty, localHost.getHostName()); } if (Validator.isNotNull(_vmId1Property)) { int id = GetterUtil.getInteger(StringUtil.extractDigits(localHost.getHostName())); getProject().setUserProperty(_vmId1Property, String.valueOf((id * 2) - 1)); } if (Validator.isNotNull(_vmId2Property)) { int id = GetterUtil.getInteger(StringUtil.extractDigits(localHost.getHostName())); getProject().setUserProperty(_vmId2Property, String.valueOf((id * 2))); } } catch (UnknownHostException uhe) { throw new BuildException(uhe); } }
@Override public void run() { Log.i(TAG, "Server " + addr.getHostName() + " started"); while (true) { try { Socket socket = serverSocket.accept(); int flag = socket.getInputStream().read(); if (flag == FLAG_REQUEST) { DataInputStream in = new DataInputStream(socket.getInputStream()); String text = in.readUTF(); Log.i(TAG, text); playText(text, service); in.close(); } else if (flag == FLAG_STOP_ALL) { Log.i( TAG, "Detected \"stop all\" signal from " + socket.getInetAddress().getHostName()); for (ServerThread st : serverThreads) { st.stop(); } break; } } catch (IOException ex) { Log.e(TAG, "", ex); } } Log.i(TAG, "Server " + addr.getHostName() + " finished"); if (!destroyed) { stop(); } }
/** * Converts collection of rich nodes to block location data. * * @param nodes Collection of affinity nodes. */ private void convertFromNodes(Collection<ClusterNode> nodes) { Collection<String> names = new LinkedHashSet<>(); Collection<String> hosts = new LinkedHashSet<>(); Collection<UUID> nodeIds = new ArrayList<>(nodes.size()); for (final ClusterNode node : nodes) { // Normalize host names into Hadoop-expected format. try { Collection<InetAddress> addrs = U.toInetAddresses(node); for (InetAddress addr : addrs) { if (addr.getHostName() == null) names.add(addr.getHostAddress() + ":" + 9001); else { names.add(addr.getHostName() + ":" + 9001); // hostname:portNumber hosts.add(addr.getHostName()); } } } catch (IgniteCheckedException ignored) { names.addAll(node.addresses()); } nodeIds.add(node.id()); } this.nodeIds = nodeIds; this.names = names; this.hosts = hosts; }
/** * Retrieves an array of Strings naming the distinct, known to be valid local InetAddress names * for this machine. The process is to collect and return the union of the following sets: * * <ol> * <li>InetAddress.getAllByName(InetAddress.getLocalHost().getHostAddress()) * <li>InetAddress.getAllByName(InetAddress.getLocalHost().getHostName()) * <li>InetAddress.getAllByName(InetAddress.getByName(null).getHostAddress()) * <li>InetAddress.getAllByName(InetAddress.getByName(null).getHostName()) * <li>InetAddress.getByName("loopback").getHostAddress() * <li>InetAddress.getByName("loopback").getHostname() * </ol> * * @return the distinct, known to be valid local InetAddress names for this machine */ public static String[] listLocalInetAddressNames() { InetAddress addr; InetAddress[] addrs; HashSet set; set = new HashSet(); try { addr = InetAddress.getLocalHost(); addrs = InetAddress.getAllByName(addr.getHostAddress()); for (int i = 0; i < addrs.length; i++) { set.add(addrs[i].getHostAddress()); set.add(addrs[i].getHostName()); } addrs = InetAddress.getAllByName(addr.getHostName()); for (int i = 0; i < addrs.length; i++) { set.add(addrs[i].getHostAddress()); set.add(addrs[i].getHostName()); } } catch (Exception e) { } try { addr = InetAddress.getByName(null); addrs = InetAddress.getAllByName(addr.getHostAddress()); for (int i = 0; i < addrs.length; i++) { set.add(addrs[i].getHostAddress()); set.add(addrs[i].getHostName()); } addrs = InetAddress.getAllByName(addr.getHostName()); for (int i = 0; i < addrs.length; i++) { set.add(addrs[i].getHostAddress()); set.add(addrs[i].getHostName()); } } catch (Exception e) { } try { set.add(InetAddress.getByName("loopback").getHostAddress()); set.add(InetAddress.getByName("loopback").getHostName()); } catch (Exception e) { } return (String[]) set.toArray(new String[set.size()]); }
/** * @param address IP address to bind * @param dns JmDNS instance * @param jmdnsName JmDNS name * @return new HostInfo */ public static HostInfo newHostInfo(InetAddress address, JmDNSImpl dns, String jmdnsName) { HostInfo localhost = null; String aName = ""; InetAddress addr = address; try { if (addr == null) { String ip = System.getProperty("net.mdns.interface"); if (ip != null) { addr = InetAddress.getByName(ip); } else { addr = InetAddress.getLocalHost(); if (addr.isLoopbackAddress()) { // Find local address that isn't a loopback address InetAddress[] addresses = NetworkTopologyDiscovery.Factory.getInstance().getInetAddresses(); if (addresses.length > 0) { addr = addresses[0]; } } } aName = addr.getHostName(); if (addr.isLoopbackAddress()) { logger.warning("Could not find any address beside the loopback."); } } else { aName = addr.getHostName(); } if (aName.contains("in-addr.arpa") || (aName.equals(addr.getHostAddress()))) { aName = ((jmdnsName != null) && (jmdnsName.length() > 0) ? jmdnsName : addr.getHostAddress()); } } catch (final IOException e) { logger.log( Level.WARNING, "Could not intialize the host network interface on " + address + "because of an error: " + e.getMessage(), e); // This is only used for running unit test on Debian / Ubuntu addr = loopbackAddress(); aName = ((jmdnsName != null) && (jmdnsName.length() > 0) ? jmdnsName : "computer"); } // A host name with "." is illegal. so strip off everything and append .local. aName = aName.replace('.', '-'); aName += ".local."; localhost = new HostInfo(addr, aName, dns); return localhost; }
static { try { InetAddress addr = InetAddress.getLocalHost(); HOST_NAME = addr.getHostName(); Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces(); for (NetworkInterface netint : Collections.list(nets)) { if (null != netint.getHardwareAddress()) { List<InterfaceAddress> list = netint.getInterfaceAddresses(); for (InterfaceAddress interfaceAddress : list) { InetAddress ip = interfaceAddress.getAddress(); if (ip instanceof Inet4Address) { HOST_IP += interfaceAddress.getAddress().toString(); } } } } HOST_IP = HOST_IP.replaceAll("null", ""); } catch (Exception e) { System.out.println("获取服务器IP出错"); } try { osmxb = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean(); TotalMemorySize = osmxb.getTotalPhysicalMemorySize() / kb; } catch (Exception e) { System.out.println("获取系统信息失败"); e.printStackTrace(); } }
/** * Determine the hostname of the machine Kettle is running on * * @return The hostname */ public static final String getHostname() { String lastHostname = "localhost"; try { Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); while (en.hasMoreElements()) { NetworkInterface nwi = en.nextElement(); Enumeration<InetAddress> ip = nwi.getInetAddresses(); while (ip.hasMoreElements()) { InetAddress in = (InetAddress) ip.nextElement(); lastHostname = in.getHostName(); // System.out.println(" ip address bound : "+in.getHostAddress()); // System.out.println(" hostname : "+in.getHostName()); // System.out.println(" Cann.hostname : "+in.getCanonicalHostName()); // System.out.println(" ip string : "+in.toString()); if (!lastHostname.equalsIgnoreCase("localhost") && !(lastHostname.indexOf(':') >= 0)) { return lastHostname; } } } } catch (SocketException e) { } return lastHostname; }
public ActivityTagFactory() { String userinfo = System.getProperty("user.name"); if (userinfo != null) { userinfo = userinfo.replaceAll("^[^a-zA-Z0-9.-]+", ""); userinfo = userinfo.replaceAll("[^a-zA-Z0-9.-]+$", ""); userinfo = userinfo.replaceAll("[^a-zA-Z0-9.-]", "_"); } if (userinfo == null || userinfo.length() == 0) { userinfo = ""; } else { userinfo = userinfo + "@"; } String authority = "localhost"; try { InetAddress localMachine = InetAddress.getLocalHost(); authority = localMachine.getHostName(); authority = authority.replaceAll("^[^a-zA-Z0-9.-]+", ""); authority = authority.replaceAll("[^a-zA-Z0-9.-]+$", ""); authority = authority.replaceAll("[^a-zA-Z0-9.-]", "_"); authority = authority.toLowerCase(); } catch (UnknownHostException e) { // ignore } space = "tag:" + userinfo + authority + ","; }
public static void main(String[] args) throws UnknownHostException { // 获取本机的InetAddress实例 InetAddress address = InetAddress.getLocalHost(); System.out.println("计算名:" + address.getHostName()); System.out.println("IP地址:" + address.getHostAddress()); byte[] bytes = address.getAddress(); // 获取字节数组形式的IP地址 System.out.println("字节数组形式的IP:" + Arrays.toString(bytes)); System.out.println(address); // 直接输出InetAddress对象 // 根据机器名获取InetAddress实例 // InetAddress address2=InetAddress.getByName("wyf-PC");//1 InetAddress address2 = InetAddress.getByName("111.111.113.23"); // 2 // 1和2都行 System.out.println("计算名:" + address2.getHostName()); System.out.println("IP地址:" + address2.getHostAddress()); }
public static final Map<String, List<InetAddress>> listHostAddresses() { Map<String, List<InetAddress>> result = new HashMap<String, List<InetAddress>>(); try { Enumeration<NetworkInterface> ifs = NetworkInterface.getNetworkInterfaces(); while (ifs.hasMoreElements()) { NetworkInterface iface = ifs.nextElement(); if (iface.isUp() && !iface.isPointToPoint()) { Enumeration<InetAddress> addrs = iface.getInetAddresses(); while (addrs.hasMoreElements()) { InetAddress addr = addrs.nextElement(); String hostName = addr.getHostName(); if (!hostName.equals(addr.getHostAddress())) { // only take interfaces with a proper hostname configured List<InetAddress> addresses = result.get(hostName); if (addresses == null) { addresses = new ArrayList<InetAddress>(); result.put(hostName, addresses); } addresses.add(addr); } } } } return result; } catch (SocketException ex) { log.warn("could not determine local IP addresses, will use localhost only"); return Collections.emptyMap(); } }
public static int getID() { int id = -1; try { InetAddress local = InetAddress.getLocalHost(); String hostname = local.getHostName(); InetAddress[] all = InetAddress.getAllByName(hostname); for (int i = 0; i < all.length; i++) { String ip = all[i].getHostAddress(); System.out.println(i + ": " + all[i].getHostName() + " " + ip); if (ip.indexOf("192") > -1) { String sid = ip.substring(ip.length() - 1, ip.length()); id = Integer.parseInt(sid); System.out.println("Found the ID: " + id); } } } catch (UnknownHostException e) { e.printStackTrace(); } if (id < 0) { System.out.println("IP Address not detected properly"); } return id; }
@Override protected void populateLocalName() { InetAddress inetAddr = getSocket().getIOChannel().socket().getLocalAddress(); if (inetAddr != null) { localName = inetAddr.getHostName(); } }
/** * Creates a {@link TcpConnectionSupport} object and publishes a {@link TcpConnectionEvent} with * {@link TcpConnectionEventType#OPEN}, if so configured. * * @param socket the underlying socket. * @param server true if this connection is a server connection * @param lookupHost true if reverse lookup of the host name should be performed, otherwise, the * ip address will be used for identification purposes. * @param applicationEventPublisher the publisher to which OPEN, CLOSE and EXCEPTION events will * be sent; may be null if event publishing is not required. * @param connectionFactoryName the name of the connection factory creating this connection; used * during event publishing, may be null, in which case "unknown" will be used. */ public TcpConnectionSupport( Socket socket, boolean server, boolean lookupHost, ConnectionFactorySupport<T> connectionFactory) { this.connectionFactory = connectionFactory; this.server = server; InetAddress inetAddress = socket.getInetAddress(); if (inetAddress != null) { this.hostAddress = inetAddress.getHostAddress(); if (lookupHost) { this.hostName = inetAddress.getHostName(); } else { this.hostName = this.hostAddress; } } int port = socket.getPort(); this.connectionId = this.hostName + ":" + port + ":" + UUID.randomUUID().toString(); if (connectionFactoryName != null) { this.connectionFactoryName = connectionFactoryName; } if (logger.isDebugEnabled()) { logger.debug("New connection " + this); } }
public static void main(String[] arg) { List<InetAddress> list = ServiceDiscoveryClient.discoverService(); for (InetAddress l : list) { System.out.println(l.getHostAddress()); System.out.println(l.getHostName()); } }
@Override public void setAddress(InetAddress address) { if (log.isDebugEnabled()) log.debug("Address is {}:{}", address.getHostName(), address.getHostAddress()); this.address = address; }
/** * Returns true if DAS and remote server is running in the same machine. This allows to perform * same host optimization during zip download. * * @return true if DAS and remote server runs on the same machine */ private boolean isSameHost() { boolean tf = false; String dasZipLoc = _response.getZipLocation(); File zip = new File(dasZipLoc); // the zip file name after the time stamp exists in the remote // server instance if (zip.exists()) { long dasLastModified = _response.getLastModifiedOfZip(); long localLastModified = zip.lastModified(); // last modified of zip is the same if (dasLastModified == localLastModified) { // host name of DAS String dasHostName = _response.getDasHostName(); try { InetAddress host = InetAddress.getLocalHost(); // host name of DAS is same is this server instance if ((dasHostName != null) && (dasHostName.equals(host.getHostName()))) { tf = true; } } catch (UnknownHostException uhe) { // ignore } } } return tf; }
@Override public void execute() throws MojoExecutionException, MojoFailureException { if (skip) { getLog().debug(String.format("Skipping add-resource with address %s", address)); return; } try { final InetAddress host = getHostAddress(); getLog() .info( String.format( "Executing goal %s on server %s (%s) port %s.", goal(), host.getHostName(), host.getHostAddress(), getPort())); synchronized (CLIENT_LOCK) { final ModelControllerClient client = getClient(); if (resources != null && resources.length > 0) { processResources(client, resources); } else { getLog().warn("No resources were provided."); } } } catch (Exception e) { throw new MojoExecutionException( String.format("Could not execute goal %s. Reason: %s", goal(), e.getMessage()), e); } finally { close(); } }
public static void comoClienteDelServidorCentral(String ip, int puerto) { try { Socket cliente = new Socket(ip, puerto); // crea socket con ip y puerto PrintWriter salida = new PrintWriter(cliente.getOutputStream(), true); BufferedReader entrada = new BufferedReader(new InputStreamReader(cliente.getInputStream())); InetAddress address = InetAddress.getLocalHost(); System.out.println(address); String nombreMaquinaCliente = address.getHostName(); String ipCliente = address.getHostAddress(); salida.println( "Cliente conectando, nombre: " + nombreMaquinaCliente + " direccionIP: " + ipCliente); String puertoNuevo = entrada.readLine(); System.out.println(" resp:" + puertoNuevo); int puertoNuevoEntero = Integer.parseInt(puertoNuevo); salida.close(); entrada.close(); cliente.close(); Socket cliente2 = new Socket(ip, puertoNuevoEntero); // crea socket con ip y puerto PrintWriter salida2 = new PrintWriter(cliente2.getOutputStream(), true); BufferedReader entrada2 = new BufferedReader(new InputStreamReader(cliente2.getInputStream())); salida2.println("nuevaConexion papi: " + address); System.out.println(entrada2.readLine()); } catch (Exception e) { System.out.println("Problemas al enviar el mensaje"); e.printStackTrace(); } }
@Test public void testGetPlatformHostPortConstructorTrue() { // uses hostName and port SystemHostPlatformSelector selector = new SystemHostPlatformSelector(true, 80); String platform = selector.getPlatformIdentifier(); Assert.assertEquals(address.getHostName() + ":80", platform); }
/** * Gives a status report of the request. * * @return The status report of the request. */ public synchronized String toString() { StringBuffer s = new StringBuffer(300); s.append(tostring()); s.append("\nPeer/Port : " + address.getHostName() + "/" + port); return s.toString(); }
/** * Initializes the Graphite reporter based on the current configuration. * * @param config the graphite reporter configuration */ private void configureGraphiteReporter(GraphiteReporterConfig config) { if (config.isEnabled()) { Graphite graphite = new Graphite(new InetSocketAddress(config.getServerUri(), config.getServerPort())); String nodeName; try { InetAddress localhost = InetAddress.getLocalHost(); nodeName = localhost.getHostName(); } catch (UnknownHostException e) { nodeName = "UNKNOWN"; } graphiteReporter = GraphiteReporter.forRegistry(metricRegistry) .prefixedWith(String.format("motech.%s", nodeName)) .convertRatesTo(config.getConvertRates()) .convertDurationsTo(config.getConvertDurations()) .filter(MetricFilter.ALL) .build(graphite); graphiteReporter.start(config.getFrequency(), config.getFrequencyUnit()); } }
void register(String hostName, final int rmiPort, final int serverPort) { try { final ManagementImpl impl = (ManagementImpl) _persistit.getManagement(); if (hostName == null && rmiPort != -1) { try { if (hostName == null) { final InetAddress addr = InetAddress.getLocalHost(); try { hostName = addr.getHostName() + ":" + rmiPort; } catch (final Exception e) { hostName = addr.getHostAddress() + ":" + rmiPort; } } } catch (final NumberFormatException nfe) { } } if (rmiPort != -1 && _localRegistryPort != rmiPort) { LocateRegistry.createRegistry(rmiPort); _localRegistryPort = rmiPort; } if (hostName != null && hostName.length() > 0) { final String name = "//" + hostName + "/PersistitManagementServer"; UnicastRemoteObject.exportObject(impl, serverPort); Naming.rebind(name, impl); impl._registered = true; impl._registeredHostName = hostName; _persistit.getLogBase().rmiServerRegistered.log(hostName); } } catch (final Exception exception) { _persistit.getLogBase().rmiRegisterException.log(hostName, exception); } }
public String getLocalHostName() { try { return InetAddress.getLocalHost().getHostName(); } catch (UnknownHostException e) { return m_local.getHostName(); } }
/** * Method that adds the HTTP protocol to a request message * * @param data Request message to add HTTP protocol to * @param url Tag/URL to add to message * @return the request with the HTTP protocol added * @exception context.arch.comm.protocol.ProtocolException if the protocol can not be added */ public String addRequestProtocol(String data, String url, String type) throws ProtocolException { int xmlLen = data.length(); String eol = "\r\n"; StringBuffer text = new StringBuffer(); String thisMachine; try { // get our machine name InetAddress thisInet = InetAddress.getLocalHost(); thisMachine = thisInet.getHostName(); } catch (UnknownHostException e) { thisMachine = "localhost"; } xmlLen += 2 * eol.length(); // add length of end of lines at the end if (type.equals(POST)) { text.append(POST + " " + url + " HTTP/1.0" + eol); } else { text.append(GET + " " + url + " HTTP/1.0" + eol); } text.append("User-Agent: Context Client" + eol); text.append("Host: " + thisMachine + eol); if (type.equals(POST)) { text.append("Content-Type: text/xml" + eol); text.append("Content-Length: " + xmlLen + eol); text.append(eol); text.append(data + eol); } text.append(eol); // commObject.println("\nHTTPClientSocket : addRequestProtocol\n" + " CONTENT:\n" + // text.toString()); return text.toString(); }
@Override protected Void doInBackground(Void... params) { try { Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces(); while (networkInterfaces.hasMoreElements()) { NetworkInterface thisInterface = networkInterfaces.nextElement(); Enumeration<InetAddress> inetAddresses = thisInterface.getInetAddresses(); if (inetAddresses.hasMoreElements()) { String niInfo = thisInterface.getDisplayName() + "\n"; while (inetAddresses.hasMoreElements()) { InetAddress thisAddress = inetAddresses.nextElement(); niInfo += "---\n"; niInfo += "Address: " + thisAddress.getAddress() + "\n"; niInfo += "CanonicalHostName: " + thisAddress.getCanonicalHostName() + "\n"; niInfo += "HostAddress: " + thisAddress.getHostAddress() + "\n"; niInfo += "HostName: " + thisAddress.getHostName() + "\n"; } publishProgress(niInfo); } } } catch (SocketException e) { e.printStackTrace(); } return null; }
public static void main(String args[]) throws UnknownHostException { InetAddress address = InetAddress.getLocalHost(); System.out.println("locla address----->" + address.getHostAddress()); System.out.println("local host name----->" + address.getHostName()); }
/** Creates the server. */ public static void main(String args[]) { client = null; ServerSocket server = null; try { System.out.print("\nCreating Server...\n"); // creates the server server = new ServerSocket(8008); System.out.print("Created\n"); // get the ip Address and the host name. InetAddress localAddr = InetAddress.getLocalHost(); System.out.println("IP address: " + localAddr.getHostAddress()); System.out.println("Hostname: " + localAddr.getHostName()); } catch (IOException e) { // sends a System.out.println("IO" + e); } // constantly checks for a new aocket trying to attach itself to the trhead while (true) { try { client = server.accept(); // create a new thread. FinalMultiThread thr = new FinalMultiThread(client); System.out.print(client.getInetAddress() + " : " + thr.getUserName() + "\n"); CliList.add(thr); current++; thr.start(); } catch (IOException e) { System.out.println(e); } } }
private synchronized void initializeHostCache() { if (!initialized) { // first, add the known interfaces. This is the only safe method to get // the _real_ IP addresses, and get _all_ of them. addLocalAddressesByInterface(); try { // Add what Java thinks is the local host. InetAddress localHostJava = InetAddress.getLocalHost(); // Do _not_ add the address that Java thinks the local host has, // since it may be wrong! This is due to the method Java uses: // it takes the host _name_ and does a reverse name lookup // to get the address. This may be _wrong_ in case the DNS server // points to a different (or outdated) address for the name. // In reality, _only_ the addresses given by our own interfaces // are correct! (As obtained by addLocalAddressesByInterface()). // addLocalAddress(localHostJava); // Add what Java thinks is the local host name. // The local host name correct in the sense that it is configured // locally and thus known locally. Note that in case of DNS inconsistency, // DNS servers will return a _different_ address for the name than the // local one, in this case the host name will be added as non-local. addHostName(localHostJava.getHostName()); } catch (UnknownHostException e) { /* no error */ } // finally, add the "localhost" special host name since it might not be covered // by the methods above (we cannot get all names for a given address, only the other way // round). addHostName("localhost"); // $NON-NLS-1$ // mark as initialized initialized = true; } }
/** * Add a standardised amount of information about an interface. This is in the form: * * <pre> * [interfaces] * | * | * +--[ id ] (branch) * | | * | +-- "order" (integer metric: 1 .. 2 ..) * | +-- "FQDN" (string metric: the host's FQDN, as presented by the door) * | +-- "address" (string metric: the host's address; e.g., "127.0.0.1") * | +-- "address-type" (string metric: "IPv4", "IPv6" or "unknown") * | +-- "scope" (string metric: "IPv4", "IPv6" or "unknown") * | * </pre> * * @param update The StateUpdate to append the new metrics. * @param parentPath the path that the id branch will be added. * @param lifetime how long the created metrics should last. */ private void addInterfaceInfo( StateUpdate update, StatePath parentPath, InetAddress address, long lifetime) { StatePath pathToInterfaceBranch = parentPath.newChild(address.getHostAddress()); String hostName = address.getHostName(); update.appendUpdate( pathToInterfaceBranch.newChild("FQDN"), new StringStateValue(hostName, lifetime)); String urlName = (isInetAddress(hostName)) ? toUriString(address) : hostName; update.appendUpdate( pathToInterfaceBranch.newChild("url-name"), new StringStateValue(urlName, lifetime)); update.appendUpdate( pathToInterfaceBranch.newChild("address"), new StringStateValue(address.getHostAddress(), lifetime)); update.appendUpdate( pathToInterfaceBranch.newChild("address-type"), new StringStateValue( (address instanceof Inet4Address) ? "IPv4" : (address instanceof Inet6Address) ? "IPv6" : "unknown", lifetime)); update.appendUpdate( pathToInterfaceBranch.newChild("scope"), new StringStateValue(NetworkUtils.InetAddressScope.of(address).toString().toLowerCase())); }
public static void main(String[] args) { if (args.length == 0) { System.err.println("Usage: ntp.NTPClient <hostname-or-address-list>"); System.exit(1); } NTPUDPClient client = new NTPUDPClient(); // We want to timeout if a response takes longer than 10 seconds client.setDefaultTimeout(10000); try { client.open(); for (String arg : args) { System.out.println(); try { InetAddress hostAddr = InetAddress.getByName(arg); System.out.println("> " + hostAddr.getHostName() + "/" + hostAddr.getHostAddress()); TimeInfo info = client.getTime(hostAddr); processResponse(info); } catch (IOException ioe) { ioe.printStackTrace(); } } } catch (SocketException e) { e.printStackTrace(); } client.close(); }