Package nl.sidnlabs.pcap.util

Class IPv4Util

java.lang.Object

nl.sidnlabs.pcap.util.IPv4Util

public class IPv4Util
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	IP_DST_OFFSET
static final int	IP_ID_OFFSET
static final int	IP_PROTOCOL_OFFSET
static final int	IP_SRC_OFFSET
static final int	IP_TTL_OFFSET
static final int	IP_VHL_OFFSET

Method Summary

Modifier and Type	Method	Description
static InetAddress	decodeDst(byte[] packetData, int ipStart)
static int	decodeId(byte[] packetData, int ipStart)
static byte	decodeProtocol(byte[] packetData, int ipStart)
static InetAddress	decodeSrc(byte[] packetData, int ipStart)
static int	decodeTTL(byte[] packetData, int ipStart)
static int	getInternetProtocolHeaderLength(byte[] packet, int ipStart)
static int	getInternetProtocolHeaderVersion(byte[] packet, int ipStart)

Methods inherited from class java.lang.Object

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

Field Details

IP_PROTOCOL_OFFSET

public static final int IP_PROTOCOL_OFFSET

See Also:

• Constant Field Values

IP_SRC_OFFSET

public static final int IP_SRC_OFFSET

See Also:

• Constant Field Values

IP_VHL_OFFSET

public static final int IP_VHL_OFFSET

See Also:

• Constant Field Values

IP_TTL_OFFSET

public static final int IP_TTL_OFFSET

See Also:

• Constant Field Values

IP_DST_OFFSET

public static final int IP_DST_OFFSET

See Also:

• Constant Field Values

IP_ID_OFFSET

public static final int IP_ID_OFFSET

See Also:

• Constant Field Values

Method Details

decodeTTL

public static int decodeTTL(byte[] packetData,
 int ipStart)

decodeProtocol

public static byte decodeProtocol(byte[] packetData,
 int ipStart)

decodeSrc

public static InetAddress decodeSrc(byte[] packetData,
 int ipStart)

decodeDst

public static InetAddress decodeDst(byte[] packetData,
 int ipStart)

decodeId

public static int decodeId(byte[] packetData,
 int ipStart)

getInternetProtocolHeaderVersion

public static int getInternetProtocolHeaderVersion(byte[] packet,
 int ipStart)

getInternetProtocolHeaderLength

public static int getInternetProtocolHeaderLength(byte[] packet,
 int ipStart)