Example usage for java.net NetworkInterface getInetAddresses

Introduction

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

Prototype

public Enumeration<InetAddress> getInetAddresses() 

Source Link

Document

Get an Enumeration with all or a subset of the InetAddresses bound to this network interface.

Usage

From source file:nfinity.FindPeer.java

public String ScanNetwork() {
    try {//  w w w . j  a  v a 2s .co m
        Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
        for (NetworkInterface netint : Collections.list(nets)) {
            Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
            for (InetAddress inetAddress : Collections.list(inetAddresses)) {
                if (!inetAddress.getClass().toString().equals("class java.net.Inet6Address")) {
                    if (!inetAddress.isLoopbackAddress()) {
                        try {
                            SubnetUtils utils = new SubnetUtils(inetAddress.getHostAddress() + "/"
                                    + netint.getInterfaceAddresses().get(1).getNetworkPrefixLength());
                            String[] allIps = utils.getInfo().getAllAddresses();
                            return ConnectIP(allIps, inetAddress);
                        } catch (IllegalArgumentException ex) {
                            int prefix = NetworkInterface.getByInetAddress(inetAddress).getInterfaceAddresses()
                                    .get(0).getNetworkPrefixLength();
                            if (!inetAddress.isLoopbackAddress()) {
                                System.out
                                        .println("IP: " + inetAddress.getHostAddress() + " Prefix: " + prefix);
                                SubnetUtils utils = new SubnetUtils(
                                        inetAddress.getHostAddress() + "/" + prefix);
                                String[] allIps = utils.getInfo().getAllAddresses();
                                return ConnectIP(allIps, inetAddress);
                            }
                        }
                    }
                }
            }
        }
    } catch (SocketException ex) {
        System.out.println("Connection failed " + ex.getMessage());
    }
    return "Peer not found";
}

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From source file:com.aurel.track.prop.ApplicationBean.java

/**
 * Retrieve all non-loopback IP addresses from all network interfaces
 *
 * @return the array of assigned IP numbers
 *//*from  w  w  w.  j  av  a  2 s .  c om*/
public static InetAddress[] getInetAddress() {
    List<InetAddress> allIPs = new ArrayList<InetAddress>();
    InetAddress[] allAds = null;

    try {
        InetAddress candidateAddress = null;
        // Iterate all NICs (network interface cards)...
        for (Enumeration<NetworkInterface> ifaces = NetworkInterface.getNetworkInterfaces(); ifaces
                .hasMoreElements();) {
            NetworkInterface iface = (NetworkInterface) ifaces.nextElement();
            // Iterate all IP addresses assigned to each card...
            for (Enumeration<InetAddress> inetAddrs = iface.getInetAddresses(); inetAddrs.hasMoreElements();) {
                InetAddress inetAddr = (InetAddress) inetAddrs.nextElement();
                if (!inetAddr.isLoopbackAddress()) {

                    if (inetAddr.isSiteLocalAddress()) {
                        // Found non-loopback site-local address. Return it
                        // immediately...
                        allIPs.add(inetAddr);
                        continue;
                    } else if (candidateAddress == null) {
                        // Found non-loopback address, but not necessarily
                        // site-local.
                        // Store it as a candidate to be returned if
                        // site-local address is not subsequently found...
                        candidateAddress = inetAddr;
                        // Note that we don't repeatedly assign non-loopback
                        // non-site-local addresses as candidates,
                        // only the first. For subsequent iterations,
                        // candidate will be non-null.
                    }
                }
            }
        }

        // At this point, we did not find a non-loopback address.
        // Fall back to returning whatever InetAddress.getLocalHost()
        // returns...
        if (allIPs.isEmpty()) {
            allIPs.add(InetAddress.getLocalHost());
        }

        allAds = new InetAddress[allIPs.size()];
        allAds = allIPs.toArray(allAds);

    } catch (Exception uhn) {
        LOGGER.error(
                "An exception occurred trying to get " + "all IP addresses for this host: " + uhn.getMessage());
    }
    return allAds;
}

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From source file:org.apache.hadoop.hbase.regionserver.TestRegionServerHostname.java

@Test(timeout = 120000)
public void testRegionServerHostname() throws Exception {
    final int NUM_MASTERS = 1;
    final int NUM_RS = 1;
    Enumeration<NetworkInterface> netInterfaceList = NetworkInterface.getNetworkInterfaces();

    while (netInterfaceList.hasMoreElements()) {
        NetworkInterface ni = netInterfaceList.nextElement();
        Enumeration<InetAddress> addrList = ni.getInetAddresses();
        // iterate through host addresses and use each as hostname
        while (addrList.hasMoreElements()) {
            InetAddress addr = addrList.nextElement();
            if (addr.isLoopbackAddress() || addr.isLinkLocalAddress() || addr.isMulticastAddress()) {
                continue;
            }/*from  w w w . j  ava  2s  .  c  o  m*/
            String hostName = addr.getHostName();
            LOG.info("Found " + hostName + " on " + ni);

            TEST_UTIL.getConfiguration().set(HRegionServer.MASTER_HOSTNAME_KEY, hostName);
            TEST_UTIL.getConfiguration().set(HRegionServer.RS_HOSTNAME_KEY, hostName);
            TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
            try {
                ZooKeeperWatcher zkw = TEST_UTIL.getZooKeeperWatcher();
                List<String> servers = ZKUtil.listChildrenNoWatch(zkw, zkw.rsZNode);
                // there would be NUM_RS+1 children - one for the master
                assertTrue(servers.size() == NUM_RS + 1);
                for (String server : servers) {
                    assertTrue("From zookeeper: " + server + " hostname: " + hostName,
                            server.startsWith(hostName.toLowerCase() + ","));
                }
                zkw.close();
            } finally {
                TEST_UTIL.shutdownMiniCluster();
            }
        }
    }
}

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From source file:org.apache.carbondata.core.dictionary.service.AbstractDictionaryServer.java

public String findLocalIpAddress(Logger LOGGER) {
    try {//  ww w.j  a  v a 2  s . c  o m
        String defaultIpOverride = System.getenv("SPARK_LOCAL_IP");
        if (defaultIpOverride != null) {
            return defaultIpOverride;
        } else {
            InetAddress address = InetAddress.getLocalHost();
            if (address.isLoopbackAddress()) {
                // Address resolves to something like 127.0.1.1, which happens on Debian; try to find
                // a better address using the local network interfaces
                // getNetworkInterfaces returns ifs in reverse order compared to ifconfig output order
                // on unix-like system. On windows, it returns in index order.
                // It's more proper to pick ip address following system output order.
                Enumeration<NetworkInterface> activeNetworkIFs = NetworkInterface.getNetworkInterfaces();
                List<NetworkInterface> reOrderedNetworkIFs = new ArrayList<NetworkInterface>();
                while (activeNetworkIFs.hasMoreElements()) {
                    reOrderedNetworkIFs.add(activeNetworkIFs.nextElement());
                }

                if (!SystemUtils.IS_OS_WINDOWS) {
                    Collections.reverse(reOrderedNetworkIFs);
                }

                for (NetworkInterface ni : reOrderedNetworkIFs) {
                    Enumeration<InetAddress> inetAddresses = ni.getInetAddresses();
                    while (inetAddresses.hasMoreElements()) {
                        InetAddress addr = inetAddresses.nextElement();
                        if (!addr.isLinkLocalAddress() && !addr.isLoopbackAddress()
                                && addr instanceof Inet4Address) {
                            // We've found an address that looks reasonable!
                            LOGGER.warn("Your hostname, " + InetAddress.getLocalHost().getHostName()
                                    + " resolves to a loopback address: " + address.getHostAddress()
                                    + "; using " + addr.getHostAddress() + " instead (on interface "
                                    + ni.getName() + ")");
                            LOGGER.warn("Set SPARK_LOCAL_IP if you need to bind to another address");
                            return addr.getHostAddress();
                        }
                    }
                    LOGGER.warn("Your hostname, " + InetAddress.getLocalHost().getHostName()
                            + " resolves to a loopback address: " + address.getHostAddress()
                            + ", but we couldn't find any external IP address!");
                    LOGGER.warn("Set SPARK_LOCAL_IP if you need to bind to another address");
                }
            }
            return address.getHostAddress();
        }
    } catch (UnknownHostException e) {
        LOGGER.error("do not get local host address:" + e.getMessage(), e);
        throw new RuntimeException(e);
    } catch (SocketException e) {
        LOGGER.error("do not get net work interface:" + e.getMessage(), e);
        throw new RuntimeException(e);
    }
}

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From source file:com.github.tomakehurst.wiremock.BindAddressTest.java

private String getIpAddressOtherThan(String lopbackAddress) throws SocketException {
    Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
    for (NetworkInterface netInterface : Collections.list(networkInterfaces)) {
        Enumeration<InetAddress> inetAddresses = netInterface.getInetAddresses();
        for (InetAddress address : Collections.list(inetAddresses)) {
            if (address instanceof Inet4Address && !address.getHostAddress().equals(lopbackAddress)) {
                return address.getHostAddress();
            }//from   w w  w.  j  a  v a  2s.  c o  m
        }
    }
    return null;
}

---

From source file:com.motelabs.chromemote.bridge.MainActivity.java

private String getLocalIpAddress() {
    try {/*from  w  ww.  ja va 2  s  .c  om*/
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
                .hasMoreElements();) {
            NetworkInterface intf = en.nextElement();
            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                InetAddress inetAddress = enumIpAddr.nextElement();
                if (!inetAddress.isLoopbackAddress()
                        && InetAddressUtils.isIPv4Address(inetAddress.getHostAddress())) {
                    String ipAddr = inetAddress.getHostAddress();
                    return ipAddr;
                }
            }
        }
    } catch (SocketException ex) {
        //Log.d(TAG, ex.toString());
    }
    return null;
}

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From source file:com.smartdevicelink.tcpdiscovery.DiscoveredDevice.java

private String getLocalAddressForIface(String ifaceName) throws Exception {
    NetworkInterface iface = NetworkInterface.getByName(ifaceName);
    Enumeration<InetAddress> inetAddresses = iface.getInetAddresses();
    for (InetAddress inetAddress : Collections.list(inetAddresses)) {
        if (InetAddressUtils.isIPv4Address(inetAddress.toString())) {
            return inetAddress.toString();
        }/*from  w  ww.  j  a  v a  2 s . c  om*/
    }
    return "";
}

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From source file:org.sonar.server.platform.ServerIdGenerator.java

public List<InetAddress> getAvailableAddresses() {
    List<InetAddress> result = Lists.newArrayList();
    try {/*from  w  w  w . j a va  2s.  c  o m*/
        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
        while (networkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = networkInterfaces.nextElement();
            Enumeration<InetAddress> addresses = networkInterface.getInetAddresses();
            while (addresses.hasMoreElements()) {
                InetAddress ownedAddress = addresses.nextElement();
                if (isFixed(ownedAddress)) {
                    result.add(ownedAddress);
                }
            }
        }
    } catch (SocketException e) {
        LoggerFactory.getLogger(ServerIdGenerator.class).error("Fail to browse network interfaces", e);
    }
    return result;
}

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From source file:ru.asmsoft.p2p.incoming.LocalAddressesFilteringService.java

@PostConstruct
public void init() {
    try {//from  ww w  . ja va 2  s. c o  m
        logger.info("Full list of Network Interfaces:");
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
                .hasMoreElements();) {
            NetworkInterface intf = en.nextElement();
            logger.info("    " + intf.getName() + " " + intf.getDisplayName());
            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                String ip = enumIpAddr.nextElement().toString().replace("/", "");
                logger.info("        " + ip);
                localIpAddresses.add(ip);
            }
        }
    } catch (SocketException e) {
        logger.info(" (error retrieving network interface list)");
    }
}

---

From source file:terrastore.communication.NodeConfiguration.java

private String getPublishAddresses() throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();
    StringBuilder result = new StringBuilder();
    while (nics != null && nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        if (nic.isUp() && !nic.isLoopback() && !nic.isVirtual() && nic.getInetAddresses().hasMoreElements()) {
            Enumeration<InetAddress> addresses = nic.getInetAddresses();
            while (addresses.hasMoreElements()) {
                if (result.length() > 0) {
                    result.append(",");
                }/*from www  .  j  a  v  a2  s.  c o m*/
                result.append(addresses.nextElement().getHostAddress());
            }
        }
    }
    return result.toString();
}

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