net.sourceforge.jpcap.net
Class IPAddress
java.lang.Object
|
+--net.sourceforge.jpcap.net.IPAddress
- public class IPAddress
- extends java.lang.Object
IP address.
This class doesn't store IP addresses. There's a java class for that,
and it is too big and cumbersome for our purposes.
This class contains a utility method for extracting an IP address
from a big-endian byte array.
Field Summary |
static int |
WIDTH
The width in bytes of an IP address. |
Method Summary |
static java.lang.String |
extract(int offset,
byte[] bytes)
Extract a string describing an IP address from an array of bytes. |
static void |
main(java.lang.String[] args)
Unit test. |
static int |
random()
Generate a random IP number between 0.0.0.0 and 255.255.255.255. |
static int |
random(int network,
int mask)
Generate a random IP address. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
WIDTH
public static final int WIDTH
- The width in bytes of an IP address.
IPAddress
public IPAddress()
extract
public static java.lang.String extract(int offset,
byte[] bytes)
- Extract a string describing an IP address from an array of bytes.
- Parameters:
offset
- the offset of the address data.bytes
- an array of bytes containing the IP address.- Returns:
- a string of the form "255.255.255.255"
random
public static int random()
- Generate a random IP number between 0.0.0.0 and 255.255.255.255.
random
public static int random(int network,
int mask)
- Generate a random IP address.
- Parameters:
network
- the network number. i.e. 0x0a000000.mask
- the network mask. i.e. 0xffffff00.- Returns:
- a random IP address on the specified network.
main
public static void main(java.lang.String[] args)
- Unit test.