Class SctpPacket.SctpHeader

java.lang.Object

org.pcap4j.packet.AbstractPacket.AbstractHeader

org.pcap4j.packet.SctpPacket.SctpHeader

All Implemented Interfaces:

Serializable, Packet.Header, TransportPacket.TransportHeader

Enclosing class:

SctpPacket

public static final class SctpPacket.SctpHeader
extends AbstractPacket.AbstractHeader
implements TransportPacket.TransportHeader

SCTP header

 0                              16                            31
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|           Src Port            |           Dst Port            |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                        Verification Tag                       |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                            Checksum                           |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                          Chunk #1                             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                           ...                                 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                          Chunk #n                             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Since:

pcap4j 1.6.6

See Also:

• RFC 4960
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private final int	checksum
private static final int	CHECKSUM_OFFSET
private static final int	CHECKSUM_SIZE
private final List<SctpPacket.SctpChunk>	chunks
private static final int	CHUNKS_OFFSET
private static final int	DST_PORT_OFFSET
private static final int	DST_PORT_SIZE
private final SctpPort	dstPort
private static final long	serialVersionUID
private static final int	SRC_PORT_OFFSET
private static final int	SRC_PORT_SIZE
private final SctpPort	srcPort
private static final int	VERIFICAION_TAG_SIZE
private static final int	VERIFICATION_TAG_OFFSET
private final int	verificationTag

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
protected String	buildString()	This method builds the value toString() will return.
private int	calcChecksum()
protected int	calcHashCode()	This method builds the value hashCode() will return using the byte array getRawData() returns.
protected int	calcLength()	This method calculates the value length() will return by adding up the lengths of byte arrays in the list getRawFields() returns.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one using return values of getRawData().
int	getChecksum()
List<SctpPacket.SctpChunk>	getChunks()
SctpPort	getDstPort()
protected List<byte[]>	getRawFields()	Returns a list of byte arrays which represents this header's fields.
SctpPort	getSrcPort()
int	getVerificationTag()

Methods inherited from class AbstractPacket.AbstractHeader

buildHexString, buildRawData, getRawData, hashCode, length, toHexString, toString

Methods inherited from class Object

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

Methods inherited from interface Packet.Header

getRawData, length

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

SRC_PORT_OFFSET

private static final int SRC_PORT_OFFSET

See Also:

• Constant Field Values

SRC_PORT_SIZE

private static final int SRC_PORT_SIZE

See Also:

• Constant Field Values

DST_PORT_OFFSET

private static final int DST_PORT_OFFSET

See Also:

• Constant Field Values

DST_PORT_SIZE

private static final int DST_PORT_SIZE

See Also:

• Constant Field Values

VERIFICATION_TAG_OFFSET

private static final int VERIFICATION_TAG_OFFSET

See Also:

• Constant Field Values

VERIFICAION_TAG_SIZE

private static final int VERIFICAION_TAG_SIZE

See Also:

• Constant Field Values

CHECKSUM_OFFSET

private static final int CHECKSUM_OFFSET

See Also:

• Constant Field Values

CHECKSUM_SIZE

private static final int CHECKSUM_SIZE

See Also:

• Constant Field Values

CHUNKS_OFFSET

private static final int CHUNKS_OFFSET

See Also:

• Constant Field Values

srcPort

private final SctpPort srcPort

dstPort

private final SctpPort dstPort

verificationTag

private final int verificationTag

checksum

private final int checksum

chunks

private final List<SctpPacket.SctpChunk> chunks

Constructor Details

SctpHeader

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

Throws:

IllegalRawDataException

SctpHeader

private SctpHeader(SctpPacket.Builder builder)

Method Details

calcChecksum

private int calcChecksum()

getSrcPort

public SctpPort getSrcPort()

Specified by:

getSrcPort in interface TransportPacket.TransportHeader

Returns:

Source port

getDstPort

public SctpPort getDstPort()

Specified by:

getDstPort in interface TransportPacket.TransportHeader

Returns:

Destination port

getVerificationTag

public int getVerificationTag()

Returns:

verification tag

getChecksum

public int getChecksum()

Returns:

checksum

getChunks

public List<SctpPacket.SctpChunk> getChunks()

Returns:

chunks

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

calcLength

protected int calcLength()

Description copied from class: AbstractPacket.AbstractHeader

This method calculates the value length() will return by adding up the lengths of byte arrays in the list getRawFields() returns.

Overrides:

calcLength in class AbstractPacket.AbstractHeader

Returns:

a calculated length

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