Package java.net

Examples of java.net.NetworkInterface

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    private static String getIpAddress() throws SocketException {
        Enumeration e = NetworkInterface.getNetworkInterfaces();
        String address = "127.0.0.1";

        while (e.hasMoreElements()) {
            NetworkInterface netface = (NetworkInterface) e.nextElement();
            Enumeration addresses = netface.getInetAddresses();

            while (addresses.hasMoreElements()) {
                InetAddress ip = (InetAddress) addresses.nextElement();
                if (!ip.isLoopbackAddress() && isIP(ip.getHostAddress())) {
                    return ip.getHostAddress();
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     */
    protected String getIPAddress() throws SocketException{
        String ip = null;
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements()) {
            NetworkInterface iface = interfaces.nextElement();
            // filters out 127.0.0.1 and inactive interfaces
            if (iface.isLoopback() || !iface.isUp())
                continue;

            Enumeration<InetAddress> addresses = iface.getInetAddresses();
            while(addresses.hasMoreElements()) {
                InetAddress addr = addresses.nextElement();
                ip = addr.getHostAddress();
            }
        }
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        TargetServer target;

        System.out.println("This system provides more than one IP Address to advertise.\n");

        Enumeration<NetworkInterface> interfaceEnum = NetworkInterface.getNetworkInterfaces();
        NetworkInterface i;
        int addressCounter = 0;
        List<InetAddress> addresses = new ArrayList<InetAddress>();
        while (interfaceEnum.hasMoreElements()) {
            i = interfaceEnum.nextElement();
            Enumeration<InetAddress> addressEnum = i.getInetAddresses();
            InetAddress address;

            while (addressEnum.hasMoreElements()) {
                address = addressEnum.nextElement();
                System.out.println("[" + addressCounter + "] " + address.getHostAddress());
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        final String IPV4_REGEX = "\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z";

        String ipAddr = null;
        Enumeration e = NetworkInterface.getNetworkInterfaces();
        while(e.hasMoreElements()) {
            NetworkInterface n = (NetworkInterface) e.nextElement();
            Enumeration ee = n.getInetAddresses();
            while (ee.hasMoreElements()) {
                InetAddress i = (InetAddress) ee.nextElement();

                // Pick the first non loop back address
                if((!i.isLoopbackAddress() && i.isSiteLocalAddress()) ||
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        final Set<String> referrers = new HashSet<String>();
        try {
            final Enumeration<NetworkInterface> ifaces = NetworkInterface.getNetworkInterfaces();

            while(ifaces.hasMoreElements()){
                final NetworkInterface iface = ifaces.nextElement();
                logger.info("Adding Allowed referers for Interface:" + iface.getDisplayName());
                final Enumeration<InetAddress> ias = iface.getInetAddresses();
                while(ias.hasMoreElements()){
                    final InetAddress ia = ias.nextElement();
                    final String address = ia.getHostAddress().trim().toLowerCase();
                    if ( ia instanceof Inet4Address ) {
                        referrers.add("http://" + address + ":0");
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                return canonicalHostName;
            } else {
                return InetAddress.getLocalHost().getHostName();
            }
        } catch (UnknownHostException e) {
            NetworkInterface networkInterface = NetworkInterface.getNetworkInterfaces().nextElement();
            if (networkInterface == null)
                throw e;
            InetAddress ipAddress = networkInterface.getInetAddresses().nextElement();
            if (ipAddress == null)
                throw e;
            return ipAddress.getHostAddress();
        }
    }
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   public static int determineMtu()
   {
      try
      {
         NetworkInterface ni = getFirstNonLocalhostNetworkInterface().getFirst();
         return (ni == null) ? defaultMtu : ni.getMTU();
      }
      catch (SocketException se)
      {
         logger.error("Failed to retrieve the MTU. Assuming " + defaultMtu,se);
         return defaultMtu;
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   private static Pair<NetworkInterface,InetAddress> getFirstNonLocalhostNetworkInterface() throws SocketException
   {
      Enumeration<NetworkInterface> netInterfaces=NetworkInterface.getNetworkInterfaces();
      while(netInterfaces.hasMoreElements()){
         NetworkInterface networkInterface = (NetworkInterface)netInterfaces.nextElement();
         for (Enumeration<InetAddress> loopInetAddress = networkInterface.getInetAddresses(); loopInetAddress.hasMoreElements(); )
         {
            InetAddress tempInetAddress = loopInetAddress.nextElement();
            if (!tempInetAddress.isLoopbackAddress() && tempInetAddress instanceof Inet4Address)
               return new Pair<NetworkInterface,InetAddress>(networkInterface,tempInetAddress);
         }
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                        final List<NetworkInterface> interfaces = new ArrayList<NetworkInterface>();
                        final List<NetworkInterface> loopBackInterfaces = new ArrayList<NetworkInterface>();
                        final Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces();
                        while (nis.hasMoreElements())
                        {
                            final NetworkInterface ni = nis.nextElement();
                            if (ni.isLoopback())
                            {
                                loopBackInterfaces.add(ni);
                            }
                            else
                            {
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    private static Server recordServerInstance(Options opts, HazelcastInstance instance) throws SocketException {
        List<Client.HostPort> addresses = Lists.newArrayList();
        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
        while (networkInterfaces.hasMoreElements()) {
            NetworkInterface ifc = networkInterfaces.nextElement();
            if (!ifc.isLoopback()) {
                for (InterfaceAddress address : ifc.getInterfaceAddresses()) {
                    addresses.add(new Client.HostPort(address.getAddress().getHostAddress(), opts.port));
                }
            }
        }
        long serverId = new SecureRandom().nextLong();
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