org.snf4j.core.util

Class NetworkUtil

java.lang.Object

org.snf4j.core.util.NetworkUtil

public final class NetworkUtil
extends Object

A class with network-related utility functions.

Author:

SNF4J.ORG

Method Summary

Modifier and Type	Method and Description
static byte[]	ipv4ToBytes(CharSequence ip) Converts a text representation of an IPv4 address into an array of bytes.
static boolean	ipv4ToBytes(CharSequence ip, byte[] output, int off) Converts a text representation of an IPv4 address into an array of bytes.
static int	ipv4ToInt(CharSequence ip) Converts a text representation of an IPv4 address into an int value.
static String	ipv4ToString(byte[] data) Converts an array of bytes into a text representation of an IPv4 address.
static String	ipv4ToString(byte[] data, int off) Converts an array of bytes into a text representation of an IPv4 address.
static String	ipv4ToString(int value) Converts an int value into a text representation of an IPv4 address.
static byte[]	ipv6ToBytes(CharSequence ip) Converts a text representation of an IPv6 address into an array of bytes.
static boolean	ipv6ToBytes(CharSequence ip, byte[] output, int off) Converts a text representation of an IPv6 address into an array of bytes.
static String	ipv6ToString(byte[] data, int off, boolean embedIpv4) Converts an array of bytes into a compressed text representation of an IPv6 address.
static String	ipv6ToString(byte[] data, int off, boolean embedIpv4, boolean compress) Converts an array of bytes into a text representation of an IPv6 address.
static byte[]	portToBytes(int port) Converts a port number into an array of bytes.
static void	portToBytes(int port, byte[] output, int off) Converts a port number into an array of bytes.
static byte[]	toBytes(int value) Converts an int value into an array of bytes.
static void	toBytes(int value, byte[] output, int off) Converts an int value into an array of bytes.
static byte[]	toBytes(long value) Converts a long value into an array of bytes.
static void	toBytes(long value, byte[] output, int off) Converts a long value into an array of bytes.
static byte[]	toBytes(short value) Converts a short value into an array of bytes.
static void	toBytes(short value, byte[] output, int off) Converts a short value into an array of bytes.
static int	toInt(byte[] data) Converts an array of bytes into an int value.
static int	toInt(byte[] data, int off) Converts an array of bytes into an int value.
static long	toLong(byte[] data) Converts an array of bytes into a long value.
static long	toLong(byte[] data, int off) Converts an array of bytes into a long value.
static int	toPort(byte[] data) Converts an array of bytes into a port number.
static int	toPort(byte[] data, int off) Converts an array of bytes into a port number.
static short	toShort(byte[] data) Converts an array of bytes into a short value.
static short	toShort(byte[] data, int off) Converts an array of bytes into a short value.

Methods inherited from class java.lang.Object

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

Method Detail

ipv6ToBytes

public static boolean ipv6ToBytes(CharSequence ip,
                                  byte[] output,
                                  int off)

Converts a text representation of an IPv6 address into an array of bytes.

Parameters:

ip - the text representation of an IPv6 address

output - an array for the output bytes

off - starting position for the output bytes in the array

Returns:

true if the text representation was a valid IPv6 address. If the returned value is false the initial content in the output array is not changed

ipv6ToBytes

public static byte[] ipv6ToBytes(CharSequence ip)

Converts a text representation of an IPv6 address into an array of bytes.

Parameters:

ip - the text representation of an IPv6 address

Returns:

an array of bytes, or null if the text representation was not a valid IPv6 address

ipv6ToString

public static String ipv6ToString(byte[] data,
                                  int off,
                                  boolean embedIpv4)

Converts an array of bytes into a compressed text representation of an IPv6 address.

Parameters:

data - the array of bytes

off - starting position in the array of bytes

embedIpv4 - true if the IPv4 notation should should be embedded in the returned text representation of the IPv6 address.

Returns:

the text representation of the IPv6 address

ipv6ToString

public static String ipv6ToString(byte[] data,
                                  int off,
                                  boolean embedIpv4,
                                  boolean compress)

Converts an array of bytes into a text representation of an IPv6 address.

Parameters:

data - the array of bytes

off - starting position in the array of bytes

embedIpv4 - true if the IPv4 notation should should be embedded in the returned text representation of the IPv6 address

compress - true to used compressed text representation of the IPv6 address

Returns:

the text representation of the IPv6 address

ipv4ToBytes

public static boolean ipv4ToBytes(CharSequence ip,
                                  byte[] output,
                                  int off)

Converts a text representation of an IPv4 address into an array of bytes.

Parameters:

ip - the text representation of an IPv4 address

output - an array for the output bytes

off - starting position for the output bytes in the array

Returns:

true if the text representation was a valid IPv4 address. If the returned value is false the initial content in the output array is not changed

ipv4ToBytes

public static byte[] ipv4ToBytes(CharSequence ip)

Converts a text representation of an IPv4 address into an array of bytes.

Parameters:

ip - the text representation of an IPv4 address

Returns:

an array of bytes, or null if the text representation was not a valid IPv4 address

ipv4ToString

public static String ipv4ToString(byte[] data,
                                  int off)

Converts an array of bytes into a text representation of an IPv4 address.

Parameters:

data - the array of bytes

off - starting position in the array of bytes

Returns:

the text representation of the IPv4 address

ipv4ToString

public static String ipv4ToString(byte[] data)

Converts an array of bytes into a text representation of an IPv4 address.

Parameters:

data - the array of bytes

Returns:

the text representation of the IPv4 address

ipv4ToString

public static String ipv4ToString(int value)

Converts an int value into a text representation of an IPv4 address.

Parameters:

value - the int value

Returns:

the text representation of the IPv4 address

ipv4ToInt

public static int ipv4ToInt(CharSequence ip)

Converts a text representation of an IPv4 address into an int value.

Parameters:

ip - the text representation of an IPv4 address

Returns:

an int value

toPort

public static int toPort(byte[] data,
                         int off)

Converts an array of bytes into a port number.

Parameters:

data - the array of bytes

off - starting position in the array of bytes

Returns:

the port number

toPort

public static int toPort(byte[] data)

Converts an array of bytes into a port number.

Parameters:

data - the array of bytes

Returns:

the port number

portToBytes

public static void portToBytes(int port,
                               byte[] output,
                               int off)

Converts a port number into an array of bytes.

Parameters:

port - the port number

output - an array for the output bytes

off - starting position for the output bytes in the array

portToBytes

public static byte[] portToBytes(int port)

Converts a port number into an array of bytes.

Parameters:

port - the port number

Returns:

an array of bytes

toShort

public static short toShort(byte[] data,
                            int off)

Converts an array of bytes into a short value.

Parameters:

data - the array of bytes

off - starting position in the array of bytes

Returns:

the short value

toShort

public static short toShort(byte[] data)

Converts an array of bytes into a short value.

Parameters:

data - the array of bytes

Returns:

the short value

toBytes

public static void toBytes(short value,
                           byte[] output,
                           int off)

Converts a short value into an array of bytes.

Parameters:

value - the short value

output - an array for the output bytes

off - starting position for the output bytes in the array

toBytes

public static byte[] toBytes(short value)

Converts a short value into an array of bytes.

Parameters:

value - the short value

Returns:

an array of bytes

toInt

public static int toInt(byte[] data,
                        int off)

Converts an array of bytes into an int value.

Parameters:

data - the array of bytes

off - starting position in the array of bytes

Returns:

the int value

toInt

public static int toInt(byte[] data)

Converts an array of bytes into an int value.

Parameters:

data - the array of bytes

Returns:

the int value

toBytes

public static void toBytes(int value,
                           byte[] output,
                           int off)

Converts an int value into an array of bytes.

Parameters:

value - the short value

output - an array for the output bytes

off - starting position for the output bytes in the array

toBytes

public static byte[] toBytes(int value)

Converts an int value into an array of bytes.

Parameters:

value - the short value

Returns:

an array of bytes

toLong

public static long toLong(byte[] data,
                          int off)

Converts an array of bytes into a long value.

Parameters:

data - the array of bytes

off - starting position in the array of bytes

Returns:

the long value

toLong

public static long toLong(byte[] data)

Converts an array of bytes into a long value.

Parameters:

data - the array of bytes

Returns:

the long value

toBytes

public static void toBytes(long value,
                           byte[] output,
                           int off)

Converts a long value into an array of bytes.

Parameters:

value - the short value

output - an array for the output bytes

off - starting position for the output bytes in the array

toBytes

public static byte[] toBytes(long value)

Converts a long value into an array of bytes.

Parameters:

value - the short value

Returns:

an array of bytes