Module org.pcap4j.core

Package org.pcap4j.packet

Class Dot1qVlanTagPacket.Dot1qVlanTagHeader

java.lang.Object

org.pcap4j.packet.AbstractPacket.AbstractHeader

org.pcap4j.packet.Dot1qVlanTagPacket.Dot1qVlanTagHeader

All Implemented Interfaces:

Serializable, Packet.Header

Enclosing class:

Dot1qVlanTagPacket

public static final class Dot1qVlanTagPacket.Dot1qVlanTagHeader
extends AbstractPacket.AbstractHeader

Since:

pcap4j 0.9.11

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private final boolean	cfi
private static final int	DOT1Q_TAG_HEADER_SIZE
private final byte	priority
private static final int	PRIORITY_AND_CFI_AND_VID_OFFSET
private static final int	PRIORITY_AND_CFI_AND_VID_SIZE
private static final long	serialVersionUID
private final EtherType	type
private static final int	TYPE_OFFSET
private static final int	TYPE_SIZE
private final short	vid

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Dot1qVlanTagHeader(byte[] rawData, int offset, int length)
private	Dot1qVlanTagHeader(Dot1qVlanTagPacket.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().
boolean	getCfi()	true: 1, false: 0
byte	getPriority()
protected List<byte[]>	getRawFields()	Returns a list of byte arrays which represents this header's fields.
EtherType	getType()
short	getVid()
int	getVidAsInt()
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

PRIORITY_AND_CFI_AND_VID_OFFSET

private static final int PRIORITY_AND_CFI_AND_VID_OFFSET

See Also:

• Constant Field Values

PRIORITY_AND_CFI_AND_VID_SIZE

private static final int PRIORITY_AND_CFI_AND_VID_SIZE

See Also:

• Constant Field Values

TYPE_OFFSET

private static final int TYPE_OFFSET

See Also:

• Constant Field Values

TYPE_SIZE

private static final int TYPE_SIZE

See Also:

• Constant Field Values

DOT1Q_TAG_HEADER_SIZE

private static final int DOT1Q_TAG_HEADER_SIZE

See Also:

• Constant Field Values

priority

private final byte priority

cfi

private final boolean cfi

vid

private final short vid

type

private final EtherType type

Constructor Details

Dot1qVlanTagHeader

private Dot1qVlanTagHeader(byte[] rawData,
 int offset,
 int length)
                    throws IllegalRawDataException

Throws:

IllegalRawDataException

Dot1qVlanTagHeader

private Dot1qVlanTagHeader(Dot1qVlanTagPacket.Builder builder)

Method Details

getPriority

public byte getPriority()

Returns:

priority

getCfi

public boolean getCfi()

true: 1, false: 0

Returns:

cfi

getVid

public short getVid()

Returns:

vid

getVidAsInt

public int getVidAsInt()

Returns:

vid

getType

public EtherType getType()

Returns:

type

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