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.google.appinventor.components.runtime.BlockyTalky.java

private 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:io.joynr.util.JoynrUtil.java

public static void checkConnectivity(String host) throws IOException {
    InetAddress headUnitAddr = InetAddress.getByName(host);
    Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
    NetworkInterface iface;//from   w  w w  .  j  a  v  a 2 s.c o m

    while (interfaces.hasMoreElements()) {
        iface = interfaces.nextElement();
        if (headUnitAddr.isReachable(iface, 0, 5000)) {
            return;
        }
    }
    throw new UnknownHostException("Connectivity check to the host \"" + host + "\" has failed");
}

From source file:com.hypersocket.netty.NettyServer.java

protected void bindInterface(Integer port, Set<Channel> channels) throws IOException {

    Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();

    Set<String> interfacesToBind = new HashSet<String>(
            Arrays.asList(configurationService.getValues("listening.interfaces")));

    if (interfacesToBind.isEmpty()) {

        if (log.isInfoEnabled()) {
            log.info("Binding server to all interfaces on port " + port);
        }// w w  w .  ja  v  a 2  s.co  m
        Channel ch = serverBootstrap.bind(new InetSocketAddress(port));
        channels.add(ch);

        if (log.isInfoEnabled()) {
            log.info("Bound to port " + ((InetSocketAddress) ch.getLocalAddress()).getPort());
        }
    } else {
        while (e.hasMoreElements()) {

            NetworkInterface i = e.nextElement();

            Enumeration<InetAddress> inetAddresses = i.getInetAddresses();

            for (InetAddress inetAddress : Collections.list(inetAddresses)) {

                if (interfacesToBind.contains(inetAddress.getHostAddress())) {
                    try {
                        if (log.isInfoEnabled()) {
                            log.info("Binding server to interface " + i.getDisplayName() + " "
                                    + inetAddress.getHostAddress() + ":" + port);
                        }

                        Channel ch = serverBootstrap.bind(new InetSocketAddress(inetAddress, port));
                        channels.add(ch);

                        if (log.isInfoEnabled()) {
                            log.info("Bound to " + inetAddress.getHostAddress() + ":"
                                    + ((InetSocketAddress) ch.getLocalAddress()).getPort());
                        }

                    } catch (ChannelException ex) {
                        log.error("Failed to bind port", ex);
                    }
                }
            }
        }
    }
}

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

/**
 * Set a {@link MulticastChannel} to listen on all IPv6 interfaces.
 * @param channel multicast channel to listen on
 * @throws IOException if there's an error
 * @throws NullPointerException if any argument is {@code null}
 *///w w w.j av  a2  s .c o m
public static void multicastListenOnAllIpv6InterfaceAddresses(MulticastChannel channel) throws IOException {
    Validate.notNull(channel);

    final InetAddress ipv6Group = InetAddress.getByName("ff02::1"); // NOPMD

    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();

            try {
                if (addr instanceof Inet6Address) {
                    channel.join(ipv6Group, networkInterface);
                }
            } catch (IOException ioe) { // NOPMD
                // occurs with certain interfaces, do nothing
            }
        }
    }
}

From source file:net.sf.janos.control.SonosController.java

/**
 * Broadcasts a search packet on all network interfaces. This method should
 * really be a part of the Discovery class, but that's not my code...
 * //w ww. j  av  a2  s .c om
 * @param searchTarget
 * @throws IOException 
 */
public void sendSearchPacket(String searchTarget) throws IOException {
    for (Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces(); e.hasMoreElements();) {
        NetworkInterface intf = (NetworkInterface) e.nextElement();
        for (Enumeration<InetAddress> adrs = intf.getInetAddresses(); adrs.hasMoreElements();) {
            InetAddress adr = (InetAddress) adrs.nextElement();
            if (adr instanceof Inet4Address && !adr.isLoopbackAddress()) {
                Discovery.sendSearchMessage(adr, Discovery.DEFAULT_TTL, Discovery.DEFAULT_MX, searchTarget);
            }
        }
    }

}

From source file:org.apache.sentry.provider.db.log.util.CommandUtil.java

@VisibleForTesting
public static boolean assertIPInAuditLog(String ipInAuditLog) throws Exception {
    if (ipInAuditLog == null) {
        return false;
    }/*w ww .  j a  va2s .  c o  m*/
    Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
    while (netInterfaces.hasMoreElements()) {
        NetworkInterface ni = netInterfaces.nextElement();
        Enumeration<InetAddress> ips = ni.getInetAddresses();
        while (ips.hasMoreElements()) {
            if (ipInAuditLog.indexOf(ips.nextElement().getHostAddress()) != -1) {
                return true;
            }
        }
    }
    return false;
}

From source file:es.auth.plugin.AbstractUnitTest.java

public static String getNonLocalhostAddress() {
    try {/*from   w w w  . j  av  a  2s  .  com*/
        for (final Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
                .hasMoreElements();) {
            final NetworkInterface intf = en.nextElement();
            if (intf.isLoopback() || !intf.isUp()) {
                continue;
            }
            for (final Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr
                    .hasMoreElements();) {
                final InetAddress ia = enumIpAddr.nextElement();
                if (ia.isLoopbackAddress() || ia instanceof Inet6Address) {
                    continue;
                }
                return ia.getHostAddress();
            }
        }
    } catch (final SocketException e) {
        throw new RuntimeException(e);
    }
    System.out.println("ERROR: No non-localhost address available, will use localhost");
    return "localhost";
}

From source file:com.seleuco.mame4droid.NetPlay.java

public String getIPAddress() {
    try {//from   w  w w .  j a  v a2s  . co m
        Enumeration<NetworkInterface> ifaceList;
        NetworkInterface selectedIface = null;

        // First look for a WLAN interface
        ifaceList = NetworkInterface.getNetworkInterfaces();
        while (selectedIface == null && ifaceList.hasMoreElements()) {
            NetworkInterface intf = ifaceList.nextElement();
            if (intf.getName().startsWith("wlan")) {
                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 (isIPv4)
                            return sAddr;
                    }
                }
            }
        }

        // If we didn't find that, look for an Ethernet interface
        ifaceList = NetworkInterface.getNetworkInterfaces();
        while (selectedIface == null && ifaceList.hasMoreElements()) {
            NetworkInterface intf = ifaceList.nextElement();
            if (intf.getName().startsWith("eth")) {
                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 (isIPv4)
                            return sAddr;
                    }
                }
            }
        }

        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 (isIPv4)
                        return sAddr;
                }
            }
        }
    } catch (Exception ex) {
    }
    return null;
}

From source file:com.momathink.common.tools.ToolMonitor.java

/**
 * ?ip//from   www.j a v  a  2  s .c  om
 * @return  : "111.111.111.111"
 */
private String getRealIp() {
    String netip = null;// IP
    try {
        Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
        InetAddress ip = null;
        boolean finded = false;// ?IP
        while (netInterfaces.hasMoreElements() && !finded) {
            NetworkInterface ni = netInterfaces.nextElement();
            Enumeration<InetAddress> address = ni.getInetAddresses();
            while (address.hasMoreElements()) {
                ip = address.nextElement();
                if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress()
                        && ip.getHostAddress().indexOf(":") == -1) {// IP
                    netip = ip.getHostAddress();
                    finded = true;
                    break;
                }
            }
        }
    } catch (Exception e) {
    }
    return netip;
}