water.util

Class NetworkUtils

java.lang.Object

water.util.NetworkUtils

public class NetworkUtils
extends java.lang.Object

Utilities to support networking code. See: - http://www.tcpipguide.com/free/diagrams/ipv6scope.png for IPV6 Scope explanations - https://en.wikipedia.org/wiki/Multicast_address

Field Summary

Fields

Modifier and Type	Field and Description
static byte[]	GOOGLE_DNS_IPV4
static byte[]	GOOGLE_DNS_IPV6
static int[]	IPV4_MULTICAST_ALLOCATION_RANGE
static long[][]	IPV6_MULTICAST_ALLOCATION_RANGE
static long	SCOPE_GLOBAL_LOCAL
static long	SCOPE_IFACE_LOCAL
static long	SCOPE_LINK_LOCAL
static long	SCOPE_MASK
static long	SCOPE_ORG_LOCAL
static long	SCOPE_SITE_LOCAL

Constructor Summary

Constructors

Constructor and Description
NetworkUtils()

Method Summary

Modifier and Type	Method and Description
static java.net.InetAddress	getIPv4MulticastGroup(int hash)
static java.net.InetAddress	getIPv4MulticastGroup(int hash, int lowIp, int highIp)
static java.net.InetAddress	getIPv6MulticastGroup(int hash, long scope)
static java.net.InetAddress	getIPv6MulticastGroup(int hash, long[] lowIp, long[] highIp, long scope)
static long	getIPv6Scope(java.net.InetAddress ip) Return IPv6 scope for given IPv6 address.
static int	getLocalIpPingTimeout()
static int	getMulticastPort(int hash)
static boolean	isIPv4Preferred()
static boolean	isIPv6Preferred()
static boolean	isReachable(java.net.NetworkInterface iface, java.net.InetAddress address, int timeout)
static boolean	isUp(java.net.NetworkInterface iface)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

GOOGLE_DNS_IPV4

public static byte[] GOOGLE_DNS_IPV4

GOOGLE_DNS_IPV6

public static byte[] GOOGLE_DNS_IPV6

SCOPE_IFACE_LOCAL

public static long SCOPE_IFACE_LOCAL

SCOPE_LINK_LOCAL

public static long SCOPE_LINK_LOCAL

SCOPE_SITE_LOCAL

public static long SCOPE_SITE_LOCAL

SCOPE_ORG_LOCAL

public static long SCOPE_ORG_LOCAL

SCOPE_GLOBAL_LOCAL

public static long SCOPE_GLOBAL_LOCAL

SCOPE_MASK

public static long SCOPE_MASK

IPV4_MULTICAST_ALLOCATION_RANGE

public static int[] IPV4_MULTICAST_ALLOCATION_RANGE

IPV6_MULTICAST_ALLOCATION_RANGE

public static long[][] IPV6_MULTICAST_ALLOCATION_RANGE

Constructor Detail

NetworkUtils

public NetworkUtils()

Method Detail

isIPv6Preferred

public static boolean isIPv6Preferred()

isIPv4Preferred

public static boolean isIPv4Preferred()

getIPv4MulticastGroup

public static java.net.InetAddress getIPv4MulticastGroup(int hash)
                                                  throws java.net.UnknownHostException

Throws:

java.net.UnknownHostException

getIPv4MulticastGroup

public static java.net.InetAddress getIPv4MulticastGroup(int hash,
                                                         int lowIp,
                                                         int highIp)
                                                  throws java.net.UnknownHostException

Throws:

java.net.UnknownHostException

getIPv6MulticastGroup

public static java.net.InetAddress getIPv6MulticastGroup(int hash,
                                                         long scope)
                                                  throws java.net.UnknownHostException

Throws:

java.net.UnknownHostException

getIPv6MulticastGroup

public static java.net.InetAddress getIPv6MulticastGroup(int hash,
                                                         long[] lowIp,
                                                         long[] highIp,
                                                         long scope)
                                                  throws java.net.UnknownHostException

Throws:

java.net.UnknownHostException

getMulticastPort

public static int getMulticastPort(int hash)

getIPv6Scope

public static long getIPv6Scope(java.net.InetAddress ip)

Return IPv6 scope for given IPv6 address.

isUp

public static boolean isUp(java.net.NetworkInterface iface)

isReachable

public static boolean isReachable(java.net.NetworkInterface iface,
                                  java.net.InetAddress address,
                                  int timeout)

getLocalIpPingTimeout

public static int getLocalIpPingTimeout()