Module org.pcap4j.core

Package org.pcap4j.packet

Class ArpPacket.ArpHeader

java.lang.Object

org.pcap4j.packet.AbstractPacket.AbstractHeader

org.pcap4j.packet.ArpPacket.ArpHeader

All Implemented Interfaces:

Serializable, Packet.Header

Enclosing class:

ArpPacket

public static final class ArpPacket.ArpHeader
extends AbstractPacket.AbstractHeader

Version:

pcap4j 0.9.1

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	ARP_HEADER_SIZE
private static final int	DST_HARDWARE_ADDR_OFFSET
private static final int	DST_HARDWARE_ADDR_SIZE
private static final int	DST_PROTOCOL_ADDR_OFFSET
private static final int	DST_PROTOCOL_ADDR_SIZE
private final MacAddress	dstHardwareAddr
private final InetAddress	dstProtocolAddr
private static final int	HARDWARE_TYPE_OFFSET
private static final int	HARDWARE_TYPE_SIZE
private final byte	hardwareAddrLength
private final ArpHardwareType	hardwareType
private static final int	HW_ADDR_LENGTH_OFFSET
private static final int	HW_ADDR_LENGTH_SIZE
private final ArpOperation	operation
private static final int	OPERATION_OFFSET
private static final int	OPERATION_SIZE
private static final int	PROTO_ADDR_LENGTH_OFFSET
private static final int	PROTO_ADDR_LENGTH_SIZE
private static final int	PROTOCOL_TYPE_OFFSET
private static final int	PROTOCOL_TYPE_SIZE
private final byte	protocolAddrLength
private final EtherType	protocolType
private static final long	serialVersionUID
private static final int	SRC_HARDWARE_ADDR_OFFSET
private static final int	SRC_HARDWARE_ADDR_SIZE
private static final int	SRC_PROTOCOL_ADDR_OFFSET
private static final int	SRC_PROTOCOL_ADDR_SIZE
private final MacAddress	srcHardwareAddr
private final InetAddress	srcProtocolAddr

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ArpHeader(byte[] rawData, int offset, int length)
private	ArpHeader(ArpPacket.Builder builder)

Method Summary

Modifier and Type	Method	Description
protected String	buildString()	This method builds the value toString() will return.
protected int	calcHashCode()	This method builds the value hashCode() will return using the byte array getRawData() returns.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one using return values of getRawData().
MacAddress	getDstHardwareAddr()
InetAddress	getDstProtocolAddr()
byte	getHardwareAddrLength()
int	getHardwareAddrLengthAsInt()
ArpHardwareType	getHardwareType()
ArpOperation	getOperation()
byte	getProtocolAddrLength()
int	getProtocolAddrLengthAsInt()
EtherType	getProtocolType()
protected List<byte[]>	getRawFields()	Returns a list of byte arrays which represents this header's fields.
MacAddress	getSrcHardwareAddr()
InetAddress	getSrcProtocolAddr()
int	length()	Returns the header length in bytes.

Methods inherited from class org.pcap4j.packet.AbstractPacket.AbstractHeader

buildHexString, buildRawData, calcLength, getRawData, hashCode, toHexString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

HARDWARE_TYPE_OFFSET

private static final int HARDWARE_TYPE_OFFSET

See Also:

• Constant Field Values

HARDWARE_TYPE_SIZE

private static final int HARDWARE_TYPE_SIZE

See Also:

• Constant Field Values

PROTOCOL_TYPE_OFFSET

private static final int PROTOCOL_TYPE_OFFSET

See Also:

• Constant Field Values

PROTOCOL_TYPE_SIZE

private static final int PROTOCOL_TYPE_SIZE

See Also:

• Constant Field Values

HW_ADDR_LENGTH_OFFSET

private static final int HW_ADDR_LENGTH_OFFSET

See Also:

• Constant Field Values

HW_ADDR_LENGTH_SIZE

private static final int HW_ADDR_LENGTH_SIZE

See Also:

• Constant Field Values

PROTO_ADDR_LENGTH_OFFSET

private static final int PROTO_ADDR_LENGTH_OFFSET

See Also:

• Constant Field Values

PROTO_ADDR_LENGTH_SIZE

private static final int PROTO_ADDR_LENGTH_SIZE

See Also:

• Constant Field Values

OPERATION_OFFSET

private static final int OPERATION_OFFSET

See Also:

• Constant Field Values

OPERATION_SIZE

private static final int OPERATION_SIZE

See Also:

• Constant Field Values

SRC_HARDWARE_ADDR_OFFSET

private static final int SRC_HARDWARE_ADDR_OFFSET

See Also:

• Constant Field Values

SRC_HARDWARE_ADDR_SIZE

private static final int SRC_HARDWARE_ADDR_SIZE

See Also:

• Constant Field Values

SRC_PROTOCOL_ADDR_OFFSET

private static final int SRC_PROTOCOL_ADDR_OFFSET

See Also:

• Constant Field Values

SRC_PROTOCOL_ADDR_SIZE

private static final int SRC_PROTOCOL_ADDR_SIZE

See Also:

• Constant Field Values

DST_HARDWARE_ADDR_OFFSET

private static final int DST_HARDWARE_ADDR_OFFSET

See Also:

• Constant Field Values

DST_HARDWARE_ADDR_SIZE

private static final int DST_HARDWARE_ADDR_SIZE

See Also:

• Constant Field Values

DST_PROTOCOL_ADDR_OFFSET

private static final int DST_PROTOCOL_ADDR_OFFSET

See Also:

• Constant Field Values

DST_PROTOCOL_ADDR_SIZE

private static final int DST_PROTOCOL_ADDR_SIZE

See Also:

• Constant Field Values

ARP_HEADER_SIZE

private static final int ARP_HEADER_SIZE

See Also:

• Constant Field Values

hardwareType

private final ArpHardwareType hardwareType

protocolType

private final EtherType protocolType

hardwareAddrLength

private final byte hardwareAddrLength

protocolAddrLength

private final byte protocolAddrLength

operation

private final ArpOperation operation

srcHardwareAddr

private final MacAddress srcHardwareAddr

srcProtocolAddr

private final InetAddress srcProtocolAddr

dstHardwareAddr

private final MacAddress dstHardwareAddr

dstProtocolAddr

private final InetAddress dstProtocolAddr

Constructor Details

ArpHeader

private ArpHeader(byte[] rawData,
 int offset,
 int length)
           throws IllegalRawDataException

Throws:

IllegalRawDataException

ArpHeader

private ArpHeader(ArpPacket.Builder builder)

Method Details

getHardwareType

public ArpHardwareType getHardwareType()

Returns:

hardwareType

getProtocolType

public EtherType getProtocolType()

Returns:

protocolType

getHardwareAddrLength

public byte getHardwareAddrLength()

Returns:

hardwareAddrLength

getHardwareAddrLengthAsInt

public int getHardwareAddrLengthAsInt()

Returns:

hardwareAddrLength

getProtocolAddrLength

public byte getProtocolAddrLength()

Returns:

protocolAddrLength

getProtocolAddrLengthAsInt

public int getProtocolAddrLengthAsInt()

Returns:

protocolAddrLength

getOperation

public ArpOperation getOperation()

Returns:

operation

getSrcHardwareAddr

public MacAddress getSrcHardwareAddr()

Returns:

srcHardwareAddr

getSrcProtocolAddr

public InetAddress getSrcProtocolAddr()

Returns:

srcProtocolAddr

getDstHardwareAddr

public MacAddress getDstHardwareAddr()

Returns:

dstHardwareAddr

getDstProtocolAddr

public InetAddress getDstProtocolAddr()

Returns:

dstProtocolAddr

getRawFields

protected List<byte[]> getRawFields()

Description copied from class: AbstractPacket.AbstractHeader

Returns a list of byte arrays which represents this header's fields. This method is called by calcLength() and buildRawData().

Specified by:

getRawFields in class AbstractPacket.AbstractHeader

Returns:

a list of byte arrays which represents this header's fields

length

public int length()

Description copied from class: AbstractPacket.AbstractHeader

Returns the header length in bytes. This method calls calcLength() and caches the return value when it is called for the first time, and then, this method returns the cached value from the second time.

Specified by:

length in interface Packet.Header

Overrides:

length in class AbstractPacket.AbstractHeader

Returns:

the length of the byte stream of the header represented by this object in bytes

buildString

protected String buildString()

Description copied from class: AbstractPacket.AbstractHeader

This method builds the value toString() will return.

Overrides:

buildString in class AbstractPacket.AbstractHeader

Returns:

a string representation of this object

equals

public boolean equals(Object obj)

Description copied from class: AbstractPacket.AbstractHeader

Indicates whether some other object is "equal to" this one using return values of getRawData(). This method should be overridden so that it does more strict comparisons more efficiently.

Overrides:

equals in class AbstractPacket.AbstractHeader

calcHashCode

protected int calcHashCode()

Description copied from class: AbstractPacket.AbstractHeader

This method builds the value hashCode() will return using the byte array getRawData() returns. This method may be better to be overridden for performance reason.

Overrides:

calcHashCode in class AbstractPacket.AbstractHeader

Returns:

a calculated hash code value for the object