Example usage for java.net NetworkInterface getNetworkInterfaces

List of usage examples for java.net NetworkInterface getNetworkInterfaces

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Introduction

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

Prototype

public static Enumeration<NetworkInterface> getNetworkInterfaces() throws SocketException

Source Link

Document

Returns an Enumeration of all the interfaces on this machine.

Usage

From source file:com.offbynull.portmapper.common.NetworkUtils.java

/**
 * Get IP addresses for all interfaces on this machine that are IPv6.
 * @return IPv6 addresses assigned to this machine
 * @throws IOException if there's an error
 * @throws NullPointerException if any argument is {@code null}
 *///from www  .  j  a  v  a 2  s .c o m
public static Set<InetAddress> getAllLocalIpv6Addresses() throws IOException {
    Set<InetAddress> ret = new HashSet<>();

    Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
    while (interfaces.hasMoreElements()) {
        NetworkInterface networkInterface = interfaces.nextElement();
        Enumeration<InetAddress> addrs = networkInterface.getInetAddresses();
        while (addrs.hasMoreElements()) { // make sure atleast 1 ipv4 addr bound to interface
            InetAddress addr = addrs.nextElement();

            if (addr instanceof Inet6Address && !addr.isAnyLocalAddress()) {
                ret.add(addr);
            }
        }
    }

    return ret;
}

From source file:com.chicm.cmraft.core.ClusterMemberManager.java

private void initLocalAddresses() {
    try {/*from   w w  w  .  j a  v  a2 s .  co  m*/
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements()) {
            NetworkInterface inet = (NetworkInterface) interfaces.nextElement();
            Enumeration<InetAddress> addrs = inet.getInetAddresses();
            while (addrs.hasMoreElements()) {
                InetAddress addr = (InetAddress) addrs.nextElement();
                LOG.debug("local address:" + addr.getHostAddress());
                LOG.debug("local address:" + addr.getHostName());
                if (!addr.getHostAddress().isEmpty()) {
                    localAddresses.add(addr.getHostAddress());
                }
                if (!addr.getHostName().isEmpty()) {
                    localAddresses.add(addr.getHostName());
                }
            }
        }

        InetAddress inetAddress = InetAddress.getLocalHost();
        localAddresses.add(inetAddress.getHostAddress());
        localAddresses.add(inetAddress.getCanonicalHostName());
        localAddresses.add(inetAddress.getHostName());

        inetAddress = InetAddress.getLoopbackAddress();
        localAddresses.add(inetAddress.getHostAddress());
        localAddresses.add(inetAddress.getCanonicalHostName());
        localAddresses.add(inetAddress.getHostName());
    } catch (SocketException | UnknownHostException e) {
        LOG.error("", e);
    }
}

From source file:com.shreymalhotra.crazyflieserver.MainActivity.java

public String getLocalIpAddress() {
    try {//from w w w  . j a v  a2  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() &&
                // !inetAddress.isLinkLocalAddress() &&
                // inetAddress.isSiteLocalAddress() ) {
                if (!inetAddress.isLoopbackAddress()
                        && InetAddressUtils.isIPv4Address(inetAddress.getHostAddress())) {
                    String ipAddr = inetAddress.getHostAddress();
                    return ipAddr;
                }
            }
        }
    } catch (SocketException ex) {
        Log.d("CrazyFlieServer", ex.toString());
    }
    return null;
}

From source file:com.vinexs.tool.NetworkManager.java

public static String getIPAddress(boolean useIPv4) {
    try {/*  www .  j a v  a 2s. c o m*/
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface intf : interfaces) {
            List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
            for (InetAddress addr : addrs) {
                if (!addr.isLoopbackAddress()) {
                    String sAddr = addr.getHostAddress().toUpperCase();
                    boolean isIPv4 = InetAddressUtilsHC4.isIPv4Address(sAddr);
                    if (useIPv4) {
                        if (isIPv4) {
                            return sAddr;
                        }
                    } else {
                        if (!isIPv4) {
                            int delim = sAddr.indexOf('%'); // drop ip6 port suffix
                            return delim < 0 ? sAddr : sAddr.substring(0, delim);
                        }
                    }
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return "";
}

From source file:org.apache.hama.zookeeper.QuorumPeer.java

private static void writeMyID(Properties properties) throws IOException {
    long myId = -1;

    Configuration conf = new HamaConfiguration();
    String myAddress = DNS.getDefaultHost(conf.get("hama.zookeeper.dns.interface", "default"),
            conf.get("hama.zookeeper.dns.nameserver", "default"));

    List<String> ips = new ArrayList<String>();

    // Add what could be the best (configured) match
    ips.add(myAddress.contains(".") ? myAddress : StringUtils.simpleHostname(myAddress));

    // For all nics get all hostnames and IPs
    Enumeration<?> nics = NetworkInterface.getNetworkInterfaces();
    while (nics.hasMoreElements()) {
        Enumeration<?> rawAdrs = ((NetworkInterface) nics.nextElement()).getInetAddresses();
        while (rawAdrs.hasMoreElements()) {
            InetAddress inet = (InetAddress) rawAdrs.nextElement();
            ips.add(StringUtils.simpleHostname(inet.getHostName()));
            ips.add(inet.getHostAddress());
        }//from w w  w.  j a v  a  2  s .  co m
    }

    for (Entry<Object, Object> entry : properties.entrySet()) {
        String key = entry.getKey().toString().trim();
        String value = entry.getValue().toString().trim();

        if (key.startsWith("server.")) {
            int dot = key.indexOf('.');
            long id = Long.parseLong(key.substring(dot + 1));
            String[] parts = value.split(":");
            String address = parts[0];
            if (addressIsLocalHost(address) || ips.contains(address)) {
                myId = id;
                break;
            }
        }
    }

    if (myId == -1) {
        throw new IOException(
                "Could not find my address: " + myAddress + " in list of ZooKeeper quorum servers");
    }

    String dataDirStr = properties.get("dataDir").toString().trim();
    File dataDir = new File(dataDirStr);
    if (!dataDir.isDirectory()) {
        if (!dataDir.mkdirs()) {
            throw new IOException("Unable to create data dir " + dataDir);
        }
    }

    File myIdFile = new File(dataDir, "myid");
    PrintWriter w = new PrintWriter(myIdFile);
    w.println(myId);
    w.close();
}

From source file:org.apereo.portal.PortalInfoProviderImpl.java

protected String getDefaultNetworkInterfaceName() {
    this.logger/*  www  .  java  2s .  co  m*/
            .info("Attempting to resolve serverName by iterating over NetworkInterface.getNetworkInterfaces()");

    //Fail back to our best attempt at resolution
    final Enumeration<NetworkInterface> networkInterfaceEnum;
    try {
        networkInterfaceEnum = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
        logger.warn("Failed to get list of available NetworkInterfaces.", e);
        return null;
    }

    //Use a local variable here to try and return the first hostName found that doesn't start with localhost
    String name = null;
    while (networkInterfaceEnum.hasMoreElements()) {
        final NetworkInterface networkInterface = networkInterfaceEnum.nextElement();

        for (Enumeration<InetAddress> inetAddressEnum = networkInterface.getInetAddresses(); inetAddressEnum
                .hasMoreElements();) {
            final InetAddress inetAddress = inetAddressEnum.nextElement();
            name = inetAddress.getHostName();
            if (!name.startsWith("localhost")) {
                return name;
            }
        }
    }

    return name;
}

From source file:com.DPFaragir.DPFUtils.java

public static String getIPAddress(boolean useIPv4) {
    try {/* w  w  w .ja  v  a  2 s .c o m*/
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface intf : interfaces) {
            List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
            for (InetAddress addr : addrs) {
                if (!addr.isLoopbackAddress()) {
                    String sAddr = addr.getHostAddress().toUpperCase();
                    boolean isIPv4 = InetAddressUtils.isIPv4Address(sAddr);
                    if (useIPv4) {
                        if (isIPv4)
                            return sAddr;
                    } else {
                        if (!isIPv4) {
                            int delim = sAddr.indexOf('%'); // drop ip6 port suffix
                            return delim < 0 ? sAddr : sAddr.substring(0, delim);
                        }
                    }
                }
            }
        }
    } catch (Exception ex) {
    } // for now eat exceptions
    return "";
}

From source file:otsopack.commons.network.coordination.spacemanager.HttpSpaceManager.java

public static String getIpAddress() {
    try {//  w w  w . j  a  va2  s  . c o  m
        final Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
        for (NetworkInterface netIf : Collections.list(nets)) {
            // If the network is active
            if (isUp(netIf)) {
                Enumeration<InetAddress> addresses = netIf.getInetAddresses();
                for (InetAddress addr : Collections.list(addresses))
                    // If the IP address is IPv4 and it's not the local address, store it
                    if (addr.getAddress().length == 4 && !addr.isLoopbackAddress())
                        return addr.getHostAddress();
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:edu.ucsb.eucalyptus.ic.WalrusReplyQueue.java

public void handle(ExceptionMessage muleMsg) {
    try {/*from  w  w w  .  java2s.c o m*/
        Object requestMsg = muleMsg.getPayload();
        String requestString = requestMsg.toString();
        EucalyptusMessage msg = (EucalyptusMessage) BindingManager.getBinding("msgs_eucalyptus_ucsb_edu")
                .fromOM(requestString);
        Throwable ex = muleMsg.getException().getCause();
        EucalyptusMessage errMsg;

        String ipAddr = "127.0.0.1";
        List<NetworkInterface> ifaces = null;
        try {
            ifaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        } catch (SocketException e1) {
        }

        for (NetworkInterface iface : ifaces) {
            try {
                if (!iface.isLoopback() && !iface.isVirtual() && iface.isUp()) {
                    for (InetAddress iaddr : Collections.list(iface.getInetAddresses())) {
                        if (!iaddr.isSiteLocalAddress() && !(iaddr instanceof Inet6Address)) {
                            ipAddr = iaddr.getHostAddress();
                            break;
                        }
                    }
                }
            } catch (SocketException e1) {
            }
        }

        if (ex instanceof NoSuchBucketException) {
            errMsg = new WalrusBucketErrorMessageType(((NoSuchBucketException) ex).getBucketName(),
                    "NoSuchBucket", "The specified bucket was not found", HttpStatus.SC_NOT_FOUND,
                    msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof AccessDeniedException) {
            errMsg = new WalrusBucketErrorMessageType(((AccessDeniedException) ex).getBucketName(),
                    "AccessDenied", "No U", HttpStatus.SC_FORBIDDEN, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof NotAuthorizedException) {
            errMsg = new WalrusBucketErrorMessageType(((NotAuthorizedException) ex).getValue(), "Unauthorized",
                    "No U", HttpStatus.SC_UNAUTHORIZED, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof BucketAlreadyOwnedByYouException) {
            errMsg = new WalrusBucketErrorMessageType(((BucketAlreadyOwnedByYouException) ex).getBucketName(),
                    "BucketAlreadyOwnedByYou",
                    "Your previous request to create the named bucket succeeded and you already own it.",
                    HttpStatus.SC_CONFLICT, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof BucketAlreadyExistsException) {
            errMsg = new WalrusBucketErrorMessageType(((BucketAlreadyExistsException) ex).getBucketName(),
                    "BucketAlreadyExists",
                    "The requested bucket name is not available. The bucket namespace is shared by all users of the system. Please select a different name and try again.",
                    HttpStatus.SC_CONFLICT, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof BucketNotEmptyException) {
            errMsg = new WalrusBucketErrorMessageType(((BucketNotEmptyException) ex).getBucketName(),
                    "BucketNotEmpty", "The bucket you tried to delete is not empty.", HttpStatus.SC_CONFLICT,
                    msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof PreconditionFailedException) {
            errMsg = new WalrusBucketErrorMessageType(((PreconditionFailedException) ex).getPrecondition(),
                    "PreconditionFailed", "At least one of the pre-conditions you specified did not hold.",
                    HttpStatus.SC_PRECONDITION_FAILED, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof NotModifiedException) {
            errMsg = new WalrusBucketErrorMessageType(((NotModifiedException) ex).getPrecondition(),
                    "NotModified", "Object Not Modified", HttpStatus.SC_NOT_MODIFIED, msg.getCorrelationId(),
                    ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof TooManyBucketsException) {
            errMsg = new WalrusBucketErrorMessageType(((TooManyBucketsException) ex).getBucketName(),
                    "TooManyBuckets", "You have attempted to create more buckets than allowed.",
                    HttpStatus.SC_BAD_REQUEST, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof EntityTooLargeException) {
            errMsg = new WalrusBucketErrorMessageType(((EntityTooLargeException) ex).getEntityName(),
                    "EntityTooLarge", "Your proposed upload exceeds the maximum allowed object size.",
                    HttpStatus.SC_BAD_REQUEST, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof NoSuchEntityException) {
            errMsg = new WalrusBucketErrorMessageType(((NoSuchEntityException) ex).getBucketName(),
                    "NoSuchEntity", "The specified entity was not found", HttpStatus.SC_NOT_FOUND,
                    msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof DecryptionFailedException) {
            errMsg = new WalrusBucketErrorMessageType(((DecryptionFailedException) ex).getValue(),
                    "Decryption Failed", "Fail", SC_DECRYPTION_FAILED, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof ImageAlreadyExistsException) {
            errMsg = new WalrusBucketErrorMessageType(((ImageAlreadyExistsException) ex).getValue(),
                    "Image Already Exists", "Fail", HttpStatus.SC_CONFLICT, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else if (ex instanceof NotImplementedException) {
            errMsg = new WalrusBucketErrorMessageType(((NotImplementedException) ex).getValue(),
                    "Not Implemented", "NA", HttpStatus.SC_NOT_IMPLEMENTED, msg.getCorrelationId(), ipAddr);
            errMsg.setCorrelationId(msg.getCorrelationId());
        } else {
            errMsg = new EucalyptusErrorMessageType(muleMsg.getComponentName(), msg, ex.getMessage());
        }
        replies.putMessage(errMsg);
    } catch (Exception e) {
        LOG.error(e, e);
    }
}

From source file:net.centro.rtb.monitoringcenter.infos.NodeInfo.java

private static String detectLoadBalancerIpAddress() {
    Enumeration<NetworkInterface> networkInterfaces = null;
    try {/*  w  w w. jav  a2 s  . co m*/
        networkInterfaces = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
        logger.debug("Unable to obtain network interfaces!", e);
        return null;
    }

    for (NetworkInterface networkInterface : Collections.list(networkInterfaces)) {
        boolean isLoopback = false;
        try {
            isLoopback = networkInterface.isLoopback();
        } catch (SocketException e) {
            logger.debug("Unable to identify if a network interface is a loopback or not");
            continue;
        }

        if (isLoopback) {
            Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
            while (inetAddresses.hasMoreElements()) {
                InetAddress inetAddress = inetAddresses.nextElement();
                if (!inetAddress.isLoopbackAddress() && Inet4Address.class.isInstance(inetAddress)) {
                    return inetAddress.getHostAddress();
                }
            }
        }
    }

    return null;
}