Java Utililty Methods InetAddress Check

List of utility methods to do InetAddress Check

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Description

The list of methods to do InetAddress Check are organized into topic(s).

Method

booleanisIPv6(InetAddress addr)
Checks the IP protocol version (IPv4 or IPv6) 
return addr instanceof Inet6Address;
booleanisIPv6UniqueSiteLocal(InetAddress address)
is I Pv Unique Site Local 
return (address.getAddress()[0] & 0xFF) == 0xFC
        || (address.getAddress()[0] & 0xFF) == 0xFD;
booleanisLikelyBroadcast(InetAddress address)
Checks whether the passed address is likely either a broadcast or network address 
byte[] bytes = address.getAddress();
return bytes[bytes.length - 1] == 0 || bytes[bytes.length - 1] == (byte) 0xFF;
booleanisLinkLocalIPv4Address(InetAddress add)
Determines whether the address is an IPv4 link local address. 
if (add instanceof Inet4Address) {
    byte address[] = add.getAddress();
    if ((address[0] & 0xFF) == 10)
        return true;
    if ((address[0] & 0xFF) == 172 && (address[1] & 0xFF) >= 16 && address[1] <= 31)
        return true;
    if ((address[0] & 0xFF) == 192 && (address[1] & 0xFF) == 168)
        return true;
...
booleanisLinkLocalNetwork(InetAddress addr)
is Link Local Network 
byte[] bytes = addr.getAddress();
if (bytes.length != 4)
    return false;
if ((bytes[0] & 0xff) == 169 && (bytes[1] & 0xff) == 254)
    return true;
return false;
booleanisLocal(InetAddress a)
is Local 
List<InetAddress> localIPs = getLocalIPs();
if (localIPs == null) {
    return false;
} else {
    return localIPs.contains(a);
booleanisLocalAddress(InetAddress addr)
Returns true if the given address represents the local host. 
if (hasLocalScope(addr))
    return true;
Collection<NetworkInterface> nis = getNetworkInterfaces();
for (NetworkInterface ni : nis) {
    Enumeration<InetAddress> addresses = ni.getInetAddresses();
    while (addresses.hasMoreElements()) {
        if (addresses.nextElement().equals(addr))
            return true;
...
booleanisLocalAddress(InetAddress addr)
Given an InetAddress, checks to see if the address is a local address, by comparing the address with all the interfaces on the node. 
boolean local = addr.isAnyLocalAddress() || addr.isLoopbackAddress();
if (!local) {
    try {
        local = NetworkInterface.getByInetAddress(addr) != null;
    } catch (SocketException e) {
return local;
...
booleanisLocalAddress(InetAddress addr)
is Local Address 
if (addr.isAnyLocalAddress() || addr.isLoopbackAddress())
    return true;
try {
    return NetworkInterface.getByInetAddress(addr) != null;
} catch (SocketException e) {
    return false;
booleanisLocalAddress(InetAddress address)
Checks if the given address is one of the addresses of the current machine. 
NetworkInterface intf;
InetAddress addr;
Enumeration<InetAddress> eips = null;
Enumeration<NetworkInterface> eintfs = null;
try {
    eintfs = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e1) {
    e1.printStackTrace();
...