Example usage for java.net NetworkInterface isUp

List of usage examples for java.net NetworkInterface isUp

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Introduction

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

Prototype


public boolean isUp() throws SocketException

Source Link

Document

Returns whether a network interface is up and running.

Usage

From source file:com.cloud.utils.net.NetUtils.java

public static InetAddress[] getInterfaceInetAddresses(final String ifName) {
    final List<InetAddress> addrList = new ArrayList<InetAddress>();
    try {/*from  w  w w  .  j  av  a2  s  .co m*/
        for (final NetworkInterface ifc : IteratorUtil
                .enumerationAsIterable(NetworkInterface.getNetworkInterfaces())) {
            if (ifc.isUp() && !ifc.isVirtual() && ifc.getName().equals(ifName)) {
                for (final InetAddress addr : IteratorUtil.enumerationAsIterable(ifc.getInetAddresses())) {
                    addrList.add(addr);
                }
            }
        }
    } catch (final SocketException e) {
        s_logger.warn("SocketException in getAllLocalInetAddresses().", e);
    }

    final InetAddress[] addrs = new InetAddress[addrList.size()];
    if (addrList.size() > 0) {
        System.arraycopy(addrList.toArray(), 0, addrs, 0, addrList.size());
    }
    return addrs;
}

From source file:com.cloud.utils.net.NetUtils.java

public static String[] getLocalCidrs() {
    final String defaultHostIp = getDefaultHostIp();

    final List<String> cidrList = new ArrayList<String>();
    try {//from ww w  .ja  v  a2  s .  c o m
        for (final NetworkInterface ifc : IteratorUtil
                .enumerationAsIterable(NetworkInterface.getNetworkInterfaces())) {
            if (ifc.isUp() && !ifc.isVirtual() && !ifc.isLoopback()) {
                for (final InterfaceAddress address : ifc.getInterfaceAddresses()) {
                    final InetAddress addr = address.getAddress();
                    final int prefixLength = address.getNetworkPrefixLength();
                    if (prefixLength < MAX_CIDR && prefixLength > 0) {
                        final String ip = ipFromInetAddress(addr);
                        if (ip.equalsIgnoreCase(defaultHostIp)) {
                            cidrList.add(ipAndNetMaskToCidr(ip, getCidrNetmask(prefixLength)));
                        }
                    }
                }
            }
        }
    } catch (final SocketException e) {
        s_logger.warn("UnknownHostException in getLocalCidrs().", e);
    }

    return cidrList.toArray(new String[0]);
}

From source file:com.git.original.common.utils.IPUtils.java

/**
 * ?IP?/*  www. j a  va2  s.c  om*/
 * <p>
 * :<br/>
 * 1. 220.xxx.xxx.xxx<br>
 * 2. 123.xxx.xxx.xxx<br>
 * other<br>
 * 
 * @return
 * @throws SocketException
 *             If an I/O error occurs.
 * @throws NullPointerException
 *             can not found the interface
 * @throws RuntimeException
 *             can not get net address
 */
public static InetAddress getWANIpv4Address(String interfaceName)
        throws SocketException, NullPointerException, RuntimeException {

    InetAddress ipStartWith123 = null;
    InetAddress ipv4Addr = null;

    if (StringUtils.isNotEmpty(interfaceName)) {
        // ?
        NetworkInterface netInterface = NetworkInterface.getByName(interfaceName.trim());
        if (netInterface == null) {
            throw new NullPointerException("can not found the network interface by name: " + interfaceName);
        }

        Enumeration<InetAddress> addrEnum = netInterface.getInetAddresses();
        while (addrEnum.hasMoreElements()) {
            InetAddress addr = addrEnum.nextElement();
            String hostAddr = addr.getHostAddress();

            if (hostAddr.startsWith("220.")) {
                return addr;
            } else if (ipStartWith123 == null && hostAddr.startsWith("123.")) {
                ipStartWith123 = addr;
            } else if (addr instanceof Inet4Address) {
                ipv4Addr = addr;
            }
        }
    } else {
        /*
         * ???
         */
        Enumeration<NetworkInterface> interfaceEnum = NetworkInterface.getNetworkInterfaces();
        while (interfaceEnum.hasMoreElements()) {
            NetworkInterface netInterface = interfaceEnum.nextElement();
            if (netInterface.isLoopback() || !netInterface.isUp()) {
                continue;
            }

            Enumeration<InetAddress> addrEnum = netInterface.getInetAddresses();
            while (addrEnum.hasMoreElements()) {
                InetAddress addr = addrEnum.nextElement();
                String hostAddr = addr.getHostAddress();

                if (hostAddr.startsWith("220.")) {
                    return addr;
                } else if (ipStartWith123 == null && hostAddr.startsWith("123.")) {
                    ipStartWith123 = addr;
                } else if (addr instanceof Inet4Address) {
                    ipv4Addr = addr;
                }
            }
        }
    }

    if (ipStartWith123 != null) {
        return ipStartWith123;
    } else if (ipv4Addr != null) {
        return ipv4Addr;
    }

    throw new RuntimeException("can not get WAN Address");
}

From source file:com.att.arocollector.AROCollectorActivity.java

/**
 * check a network interface by name/*from   w  w  w .ja  v  a 2  s .  c om*/
 *
 * @param context
 * @param networkInterfaceName
 * @return true if interface exists and is active
 * @throws Exception
 */
private boolean checkForActiveInterface(Context context, String networkInterfaceName) throws Exception {

    List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
    for (NetworkInterface intf : interfaces) {
        if (intf.getName().equals(networkInterfaceName)) {
            return intf.isUp();
        }
    }
    return false;
}

From source file:com.portfolio.data.attachment.FileServlet.java

@Override
public void init(ServletConfig config) {
    /// List possible local address
    try {//from ww w  .j av  a 2  s .  co  m
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements()) {
            NetworkInterface current = interfaces.nextElement();
            if (!current.isUp() || current.isLoopback() || current.isVirtual())
                continue;
            Enumeration<InetAddress> addresses = current.getInetAddresses();
            while (addresses.hasMoreElements()) {
                InetAddress current_addr = addresses.nextElement();
                if (current_addr instanceof Inet4Address)
                    ourIPs.add(current_addr.getHostAddress());
            }
        }
    } catch (Exception e) {
    }

    servContext = config.getServletContext();
    backend = config.getServletContext().getInitParameter("backendserver");
    server = config.getServletContext().getInitParameter("fileserver");
    try {
        String dataProviderName = config.getInitParameter("dataProviderClass");
        dataProvider = (DataProvider) Class.forName(dataProviderName).newInstance();

        InitialContext cxt = new InitialContext();
        if (cxt == null) {
            throw new Exception("no context found!");
        }

        /// Init this here, might fail depending on server hosting
        ds = (DataSource) cxt.lookup("java:/comp/env/jdbc/portfolio-backend");
        if (ds == null) {
            throw new Exception("Data  jdbc/portfolio-backend source not found!");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:org.archive.modules.fetcher.FetchHTTPTests.java

public void testHttpBindAddress() throws Exception {
    List<InetAddress> addrList = new ArrayList<InetAddress>();
    for (NetworkInterface ifc : Collections.list(NetworkInterface.getNetworkInterfaces())) {
        if (ifc.isUp()) {
            for (InetAddress addr : Collections.list(ifc.getInetAddresses())) {
                if (addr instanceof Inet4Address) {
                    addrList.add(addr);//from www  . j ava 2  s. co  m
                }
            }
        }
    }
    if (addrList.size() < 2) {
        fail("unable to test binding to different local addresses: only " + addrList.size()
                + " addresses available");
    }
    for (InetAddress addr : addrList) {
        tryHttpBindAddress(addr.getHostAddress());
    }
}

From source file:com.jagornet.dhcpv6.server.DhcpV6Server.java

/**
 * Gets the IPv6 network interfaces for the supplied interface names.
 * /*from w w w  .  j a  v  a  2s . c  o m*/
 * @param ifnames the interface names to locate NetworkInterfaces by
 * 
 * @return the list of NetworkInterfaces that are up, support multicast,
 * and have at least one IPv6 address configured
 * 
 * @throws SocketException the socket exception
 */
private List<NetworkInterface> getIPv6NetIfs(String[] ifnames) throws SocketException {
    List<NetworkInterface> netIfs = new ArrayList<NetworkInterface>();
    for (String ifname : ifnames) {
        if (ifname.equals("*")) {
            return getAllIPv6NetIfs();
        }
        NetworkInterface netIf = NetworkInterface.getByName(ifname);
        if (netIf == null) {
            // if not found by name, see if the name is actually an address
            try {
                InetAddress ipaddr = InetAddress.getByName(ifname);
                netIf = NetworkInterface.getByInetAddress(ipaddr);
            } catch (UnknownHostException ex) {
                log.warn("Unknown interface: " + ifname + ": " + ex);
            }
        }
        if (netIf != null) {
            if (netIf.isUp()) {
                // for multicast, the loopback interface is excluded
                if (netIf.supportsMulticast() && !netIf.isLoopback()) {
                    boolean isV6 = false;
                    List<InterfaceAddress> ifAddrs = netIf.getInterfaceAddresses();
                    for (InterfaceAddress ifAddr : ifAddrs) {
                        if (ifAddr.getAddress() instanceof Inet6Address) {
                            netIfs.add(netIf);
                            isV6 = true;
                            break;
                        }
                    }
                    if (!isV6) {
                        System.err.println("Interface is not configured for IPv6: " + netIf.getDisplayName());
                        return null;
                    }
                } else {
                    System.err.println("Interface does not support multicast: " + netIf.getDisplayName());
                    return null;
                }
            } else {
                System.err.println("Interface is not up: " + netIf.getDisplayName());
                return null;
            }
        } else {
            System.err.println("Interface not found or inactive: " + ifname);
            return null;
        }
    }
    return netIfs;
}

From source file:fr.inria.ucn.collectors.NetworkStateCollector.java

private JSONArray getIfconfig(Map<String, JSONObject> stats) throws JSONException {
    JSONArray ifaces = new JSONArray();

    // make sure the stats is read
    networkStats();//from  w w  w.j  av  a 2  s  .co  m

    Enumeration<NetworkInterface> en = null;
    try {
        en = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
        Log.d(Constants.LOGTAG, "failed to list interfaces", e);
    }

    if (en != null) {
        while (en.hasMoreElements()) {
            NetworkInterface intf = en.nextElement();

            JSONObject iface = new JSONObject();
            iface.put("display_name", intf.getDisplayName());
            iface.put("name", intf.getName());
            iface.put("is_virtual", intf.isVirtual());
            iface.put("stats", stats.get(intf.getName()));

            try {
                iface.put("mtu", intf.getMTU());
                iface.put("is_loopback", intf.isLoopback());
                iface.put("is_ptop", intf.isPointToPoint());
                iface.put("is_up", intf.isUp());
            } catch (SocketException e) {
                Log.d(Constants.LOGTAG, "failed to read interface data", e);
            }

            JSONArray ips = new JSONArray();
            List<InterfaceAddress> ilist = intf.getInterfaceAddresses();
            for (InterfaceAddress ia : ilist) {
                ips.put(ia.getAddress().getHostAddress());
            }
            iface.put("addresses", ips);

            ifaces.put(iface);
        }
    } else {
        for (String name : stats.keySet()) {
            JSONObject iface = new JSONObject();
            iface.put("name", name);
            iface.put("stats", stats.get(name));
            ifaces.put(iface);
        }
    }

    return ifaces;
}

From source file:com.jagornet.dhcp.server.JagornetDhcpServer.java

private NetworkInterface getIPv4NetIf(String ifname) throws SocketException {
    NetworkInterface netIf = NetworkInterface.getByName(ifname);
    if (netIf == null) {
        // if not found by name, see if the name is actually an address
        try {/*from   www  . jav  a 2  s  .com*/
            InetAddress ipaddr = InetAddress.getByName(ifname);
            netIf = NetworkInterface.getByInetAddress(ipaddr);
        } catch (UnknownHostException ex) {
            log.warn("Unknown interface: " + ifname + ": " + ex);
        }
    }
    if (netIf != null) {
        if (netIf.isUp()) {
            // the loopback interface is excluded
            if (!netIf.isLoopback()) {
                boolean isV4 = false;
                List<InterfaceAddress> ifAddrs = netIf.getInterfaceAddresses();
                for (InterfaceAddress ifAddr : ifAddrs) {
                    if (ifAddr.getAddress() instanceof Inet4Address) {
                        isV4 = true;
                        break;
                    }
                }
                if (!isV4) {
                    System.err.println("Interface is not configured for IPv4: " + netIf);
                    return null;
                }
            } else {
                System.err.println("Interface is loopback: " + netIf);
                return null;
            }
        } else {
            System.err.println("Interface is not up: " + netIf);
            return null;
        }
    } else {
        System.err.println("Interface not found or inactive: " + ifname);
        return null;
    }
    return netIf;
}

From source file:com.jagornet.dhcp.server.JagornetDhcpServer.java

/**
 * Gets the IPv6 network interfaces for the supplied interface names.
 * //from w ww .j a v a  2 s  .  co m
 * @param ifnames the interface names to locate NetworkInterfaces by
 * 
 * @return the list of NetworkInterfaces that are up, support multicast,
 * and have at least one IPv6 address configured
 * 
 * @throws SocketException the socket exception
 */
private List<NetworkInterface> getIPv6NetIfs(String[] ifnames) throws SocketException {
    List<NetworkInterface> netIfs = new ArrayList<NetworkInterface>();
    for (String ifname : ifnames) {
        if (ifname.equals("*")) {
            return getAllIPv6NetIfs();
        }
        NetworkInterface netIf = NetworkInterface.getByName(ifname);
        if (netIf == null) {
            // if not found by name, see if the name is actually an address
            try {
                InetAddress ipaddr = InetAddress.getByName(ifname);
                netIf = NetworkInterface.getByInetAddress(ipaddr);
            } catch (UnknownHostException ex) {
                log.warn("Unknown interface: " + ifname + ": " + ex);
            }
        }
        if (netIf != null) {
            if (netIf.isUp()) {
                // for multicast, the loopback interface is excluded
                if (netIf.supportsMulticast() && !netIf.isLoopback()) {
                    boolean isV6 = false;
                    List<InterfaceAddress> ifAddrs = netIf.getInterfaceAddresses();
                    for (InterfaceAddress ifAddr : ifAddrs) {
                        if (ifAddr.getAddress() instanceof Inet6Address) {
                            netIfs.add(netIf);
                            isV6 = true;
                            break;
                        }
                    }
                    if (!isV6) {
                        System.err.println("Interface is not configured for IPv6: " + netIf);
                        return null;
                    }
                } else {
                    System.err.println("Interface does not support multicast: " + netIf);
                    return null;
                }
            } else {
                System.err.println("Interface is not up: " + netIf);
                return null;
            }
        } else {
            System.err.println("Interface not found or inactive: " + ifname);
            return null;
        }
    }
    return netIfs;
}