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:com.seleuco.mame4droid.NetPlay.java

public String getIPAddress() {
    try {//from w  w  w .ja  v  a2s .  com
        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;
}

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From source file:org.apache.nifi.registry.jetty.JettyServer.java

private void dumpUrls() throws SocketException {
    final List<String> urls = new ArrayList<>();

    for (Connector connector : server.getConnectors()) {
        if (connector instanceof ServerConnector) {
            final ServerConnector serverConnector = (ServerConnector) connector;

            Set<String> hosts = new HashSet<>();

            // determine the hosts
            if (StringUtils.isNotBlank(serverConnector.getHost())) {
                hosts.add(serverConnector.getHost());
            } else {
                Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
                if (networkInterfaces != null) {
                    for (NetworkInterface networkInterface : Collections.list(networkInterfaces)) {
                        for (InetAddress inetAddress : Collections.list(networkInterface.getInetAddresses())) {
                            hosts.add(inetAddress.getHostAddress());
                        }//from  w w w.ja v  a  2  s. co m
                    }
                }
            }

            // ensure some hosts were found
            if (!hosts.isEmpty()) {
                String scheme = "http";
                if (properties.getSslPort() != null && serverConnector.getPort() == properties.getSslPort()) {
                    scheme = "https";
                }

                // dump each url
                for (String host : hosts) {
                    urls.add(String.format("%s://%s:%s", scheme, host, serverConnector.getPort()));
                }
            }
        }
    }

    if (urls.isEmpty()) {
        logger.warn(
                "NiFi Registry has started, but the UI is not available on any hosts. Please verify the host properties.");
    } else {
        // log the ui location
        logger.info("NiFi Registry has started. The UI is available at the following URLs:");
        for (final String url : urls) {
            logger.info(String.format("%s/nifi-registry", url));
        }
    }
}

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From source file:com.poinsart.votar.VotarMain.java

public String getWifiIp() {
    Enumeration<NetworkInterface> en = null;
    try {//  w w w  .ja v  a2  s .  co m
        en = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
        return null;
    }
    while (en.hasMoreElements()) {
        NetworkInterface intf = en.nextElement();
        if (intf.getName().contains("wlan")) {
            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                InetAddress inetAddress = enumIpAddr.nextElement();
                if (!inetAddress.isLoopbackAddress() && (inetAddress.getAddress().length == 4)) {
                    //Log.d("VotAR Main", inetAddress.getHostAddress());
                    return inetAddress.getHostAddress().toString();
                }
            }
        }
    }
    return null;
}

---

From source file:org.apache.nifi.processors.standard.ListenSyslog.java

@OnScheduled
public void onScheduled(final ProcessContext context) throws IOException {
    final int port = context.getProperty(PORT).asInteger();
    final int bufferSize = context.getProperty(RECV_BUFFER_SIZE).asDataSize(DataUnit.B).intValue();
    final int maxChannelBufferSize = context.getProperty(MAX_SOCKET_BUFFER_SIZE).asDataSize(DataUnit.B)
            .intValue();/*ww w .ja v  a 2  s.  c o  m*/
    final int maxMessageQueueSize = context.getProperty(MAX_MESSAGE_QUEUE_SIZE).asInteger();
    final String protocol = context.getProperty(PROTOCOL).getValue();
    final String nicIPAddressStr = context.getProperty(NETWORK_INTF_NAME).evaluateAttributeExpressions()
            .getValue();
    final String charSet = context.getProperty(CHARSET).getValue();
    final String msgDemarcator = context.getProperty(MESSAGE_DELIMITER).getValue().replace("\\n", "\n")
            .replace("\\r", "\r").replace("\\t", "\t");
    messageDemarcatorBytes = msgDemarcator.getBytes(Charset.forName(charSet));

    final int maxConnections;
    if (UDP_VALUE.getValue().equals(protocol)) {
        maxConnections = 1;
    } else {
        maxConnections = context.getProperty(MAX_CONNECTIONS).asLong().intValue();
    }

    bufferPool = new LinkedBlockingQueue<>(maxConnections);
    for (int i = 0; i < maxConnections; i++) {
        bufferPool.offer(ByteBuffer.allocate(bufferSize));
    }

    parser = new SyslogParser(Charset.forName(charSet));
    syslogEvents = new LinkedBlockingQueue<>(maxMessageQueueSize);

    InetAddress nicIPAddress = null;
    if (!StringUtils.isEmpty(nicIPAddressStr)) {
        NetworkInterface netIF = NetworkInterface.getByName(nicIPAddressStr);
        nicIPAddress = netIF.getInetAddresses().nextElement();
    }

    // create either a UDP or TCP reader and call open() to bind to the given port
    final SSLContextService sslContextService = context.getProperty(SSL_CONTEXT_SERVICE)
            .asControllerService(SSLContextService.class);
    channelDispatcher = createChannelReader(protocol, bufferPool, syslogEvents, maxConnections,
            sslContextService, Charset.forName(charSet));
    channelDispatcher.open(nicIPAddress, port, maxChannelBufferSize);

    final Thread readerThread = new Thread(channelDispatcher);
    readerThread.setName("ListenSyslog [" + getIdentifier() + "]");
    readerThread.setDaemon(true);
    readerThread.start();
}

---

From source file:com.elixsr.portforwarder.forwarding.ForwardingService.java

private InetSocketAddress generateFromIpUsingInterface(String interfaceName, int port)
        throws SocketException, ObjectNotFoundException {

    String address = null;/*from   w w  w  .  j  av  a  2 s .  co m*/
    InetSocketAddress inetSocketAddress;

    for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
        NetworkInterface intf = en.nextElement();

        Log.d(TAG, intf.getDisplayName() + " vs " + interfaceName);
        if (intf.getDisplayName().equals(interfaceName)) {

            Log.i(TAG, "Found the relevant Interface. Will attempt to fetch IP Address");

            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {

                InetAddress inetAddress = enumIpAddr.nextElement();

                address = new String(inetAddress.getHostAddress().toString());

                if (address != null & address.length() > 0 && inetAddress instanceof Inet4Address) {

                    inetSocketAddress = new InetSocketAddress(address, port);
                    return inetSocketAddress;
                }
            }
        }
    }

    //Failed to find the relevant interface
    //TODO: complete
    //        Toast.makeText(this, "Could not find relevant network interface.",
    //                Toast.LENGTH_LONG).show();
    throw new ObjectNotFoundException("Could not find IP Address for Interface " + interfaceName);
}

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From source file:org.ohthehumanity.carrie.CarrieActivity.java

public String getLocalIpAddress() {
    try {/*w  w w.j a  v  a2s.  co m*/
        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()) {
                    return inetAddress.getHostAddress();
                }
            }
        }
    } catch (SocketException ex) {
        //Log.e(TAG, ex.toString());
    }
    return "";
}

---

From source file:io.smartspaces.system.bootstrap.osgi.GeneralSmartSpacesSupportActivator.java

/**
 * Get the IP address for the system./*from   ww  w.  j  a  va  2s.co  m*/
 *
 * @param systemConfiguration
 *          The system configuration
 *
 * @return host IP address
 */
private String getHostAddress(Configuration systemConfiguration) {
    try {
        String hostname = systemConfiguration
                .getPropertyString(SmartSpacesEnvironment.CONFIGURATION_NAME_HOST_NAME);
        if (hostname != null) {
            InetAddress address = InetAddress.getByName(hostname);
            return address.getHostAddress();
        }

        String hostInterface = systemConfiguration
                .getPropertyString(SmartSpacesEnvironment.CONFIGURATION_NAME_HOST_INTERFACE);
        if (hostInterface != null) {
            spaceEnvironment.getLog().formatInfo("Using network interface with name %s", hostInterface);
            NetworkInterface networkInterface = NetworkInterface.getByName(hostInterface);
            if (networkInterface != null) {
                for (InetAddress inetAddress : Collections.list(networkInterface.getInetAddresses())) {
                    if (inetAddress instanceof Inet4Address) {
                        return inetAddress.getHostAddress();
                    }
                }
            } else {
                spaceEnvironment.getLog().formatWarn("No network interface with name %s from configuration %s",
                        hostInterface, SmartSpacesEnvironment.CONFIGURATION_NAME_HOST_INTERFACE);

            }
        }

        // See if a single network interface. If so, we will use it.
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        if (interfaces.size() == 1) {
            for (InetAddress inetAddress : Collections.list(interfaces.get(0).getInetAddresses())) {
                if (inetAddress instanceof Inet4Address) {
                    return inetAddress.getHostAddress();
                }
            }
        }

        return null;
    } catch (Exception e) {
        spaceEnvironment.getLog().error("Could not obtain IP address", e);
        return UNKNOWN_HOST_ADDRESS;
    }
}

---

From source file:org.psit.transwatcher.TransWatcher.java

private String getBroadcastIP() {
    String myIP = null;/*from   w w  w.  j a  v  a  2  s  . c  o  m*/

    try {
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements() && myIP == null) {
            NetworkInterface current = interfaces.nextElement();
            notifyMessage(current.toString());
            notifyMessage("Name: " + current.getName());
            if (!current.isUp() || current.isLoopback() || current.isVirtual()
                    || !current.getName().startsWith("wl"))
                continue;
            Enumeration<InetAddress> addresses = current.getInetAddresses();
            while (addresses.hasMoreElements()) {
                InetAddress current_addr = addresses.nextElement();
                if (current_addr.isLoopbackAddress())
                    continue;
                if (current_addr instanceof Inet4Address) {
                    myIP = current_addr.getHostAddress();
                    break;
                }
            }
        }
    } catch (Exception exc) {
        notifyMessage("Error determining network interfaces:\n");
    }

    if (myIP != null) {
        // broadcast for IPv4
        StringTokenizer st = new StringTokenizer(myIP, ".");
        StringBuffer broadcastIP = new StringBuffer();
        // hate that archaic string puzzle
        broadcastIP.append(st.nextElement());
        broadcastIP.append(".");
        broadcastIP.append(st.nextElement());
        broadcastIP.append(".");
        broadcastIP.append(st.nextElement());
        broadcastIP.append(".");
        broadcastIP.append("255");
        return broadcastIP.toString();
    }

    return null;
}

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