Example usage for java.net NetworkInterface getSubInterfaces

Introduction

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

Prototype

public Enumeration<NetworkInterface> getSubInterfaces() 

Source Link

Document

Get an Enumeration with all the subinterfaces (also known as virtual interfaces) attached to this network interface.

Usage

From source file:Main.java

/** Finds a network interface of sub-interface with the given name */
public static NetworkInterface getByName(String name) throws SocketException {
    if (name == null)
        return null;
    Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
    while (en.hasMoreElements()) {
        NetworkInterface intf = en.nextElement();
        if (intf.getName().equals(name))
            return intf;
        Enumeration<NetworkInterface> en2 = intf.getSubInterfaces();
        while (en2.hasMoreElements()) {
            NetworkInterface intf2 = en2.nextElement();
            if (intf2.getName().equals(name)) {
                return intf2;
            }/*from ww w .j a  v  a 2s . c o  m*/
        }
    }
    return null;
}

---

From source file:com.buaa.cfs.net.DNS.java

/**
 * @param nif network interface to get addresses for
 *
 * @return set containing addresses for each subinterface of nif, see below for the rationale for using an ordered
 * set//from  w w  w. j a v  a 2s  .  com
 */
private static LinkedHashSet<InetAddress> getSubinterfaceInetAddrs(NetworkInterface nif) {
    LinkedHashSet<InetAddress> addrs = new LinkedHashSet<InetAddress>();
    Enumeration<NetworkInterface> subNifs = nif.getSubInterfaces();
    while (subNifs.hasMoreElements()) {
        NetworkInterface subNif = subNifs.nextElement();
        addrs.addAll(Collections.list(subNif.getInetAddresses()));
    }
    return addrs;
}

---

From source file:com.buaa.cfs.utils.NetUtils.java

/**
 * Return an InetAddress for each interface that matches the given subnet specified using CIDR notation.
 *
 * @param subnet              subnet specified using CIDR notation
 * @param returnSubinterfaces whether to return IPs associated with subinterfaces
 *
 * @throws IllegalArgumentException if subnet is invalid
 *///from  w ww  . ja v a2 s  .  c  o m
public static List<InetAddress> getIPs(String subnet, boolean returnSubinterfaces) {
    List<InetAddress> addrs = new ArrayList<InetAddress>();
    SubnetInfo subnetInfo = new SubnetUtils(subnet).getInfo();
    Enumeration<NetworkInterface> nifs;

    try {
        nifs = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
        LOG.error("Unable to get host interfaces", e);
        return addrs;
    }

    while (nifs.hasMoreElements()) {
        NetworkInterface nif = nifs.nextElement();
        // NB: adding addresses even if the nif is not up
        addMatchingAddrs(nif, subnetInfo, addrs);

        if (!returnSubinterfaces) {
            continue;
        }
        Enumeration<NetworkInterface> subNifs = nif.getSubInterfaces();
        while (subNifs.hasMoreElements()) {
            addMatchingAddrs(subNifs.nextElement(), subnetInfo, addrs);
        }
    }
    return addrs;
}

---

From source file:Main.java

private static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {
    System.out.printf("Display name: %s%n", netint.getDisplayName());
    System.out.printf("Name: %s%n", netint.getName());
    Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
    for (InetAddress inetAddress : Collections.list(inetAddresses)) {
        System.out.printf("InetAddress: %s%n", inetAddress);
    }/*w w w  .j  av  a  2 s .  c  om*/

    System.out.printf("Parent: %s%n", netint.getParent());
    System.out.printf("Up? %s%n", netint.isUp());
    System.out.printf("Loopback? %s%n", netint.isLoopback());
    System.out.printf("PointToPoint? %s%n", netint.isPointToPoint());
    System.out.printf("Supports multicast? %s%n", netint.isVirtual());
    System.out.printf("Virtual? %s%n", netint.isVirtual());
    System.out.printf("Hardware address: %s%n", Arrays.toString(netint.getHardwareAddress()));
    System.out.printf("MTU: %s%n", netint.getMTU());

    List<InterfaceAddress> interfaceAddresses = netint.getInterfaceAddresses();
    for (InterfaceAddress addr : interfaceAddresses) {
        System.out.printf("InterfaceAddress: %s%n", addr.getAddress());
    }
    System.out.printf("%n");
    Enumeration<NetworkInterface> subInterfaces = netint.getSubInterfaces();
    for (NetworkInterface networkInterface : Collections.list(subInterfaces)) {
        System.out.printf("%nSubInterface%n");
        displayInterfaceInformation(networkInterface);
    }
    System.out.printf("%n");
}

---

From source file:org.trafodion.rest.util.NetworkConfiguration.java

public NetworkConfiguration(Configuration conf) throws Exception {

    this.conf = conf;
    ia = InetAddress.getLocalHost();

    String dnsInterface = conf.get(Constants.REST_DNS_INTERFACE, Constants.DEFAULT_REST_DNS_INTERFACE);
    if (dnsInterface.equalsIgnoreCase("default")) {
        intHostAddress = extHostAddress = ia.getHostAddress();
        canonicalHostName = ia.getCanonicalHostName();
        LOG.info("Using local host [" + canonicalHostName + "," + extHostAddress + "]");
    } else {/*from  w  w  w .  j ava2s  .com*/
        // For all nics get all hostnames and addresses   
        // and try to match against rest.dns.interface property 
        Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();
        while (nics.hasMoreElements() && !matchedInterface) {
            InetAddress inet = null;
            NetworkInterface ni = nics.nextElement();
            LOG.info("Found interface [" + ni.getDisplayName() + "]");
            if (dnsInterface.equalsIgnoreCase(ni.getDisplayName())) {
                LOG.info("Matched specified interface [" + ni.getName() + "]");
                inet = getInetAddress(ni);
                getCanonicalHostName(ni, inet);
            } else {
                Enumeration<NetworkInterface> subIfs = ni.getSubInterfaces();
                for (NetworkInterface subIf : Collections.list(subIfs)) {
                    LOG.debug("Sub Interface Display name [" + subIf.getDisplayName() + "]");
                    if (dnsInterface.equalsIgnoreCase(subIf.getDisplayName())) {
                        LOG.info("Matched subIf [" + subIf.getName() + "]");
                        inet = getInetAddress(subIf);
                        getCanonicalHostName(subIf, inet);
                        break;
                    }
                }
            }
        }
    }

    if (!matchedInterface)
        checkCloud();
}

---