Class DnsPacket

java.lang.Object

org.pcap4j.packet.AbstractPacket

org.pcap4j.packet.DnsPacket

All Implemented Interfaces:

Serializable, Iterable<Packet>, Packet

public final class DnsPacket
extends AbstractPacket

DNS packet.

Since:

pcap4j 1.7.1

See Also:

• RFC 1035
• DNS Header Flags
• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	DnsPacket.Builder
static final class	DnsPacket.DnsHeader	DNS header

Nested classes/interfaces inherited from class AbstractPacket

AbstractPacket.AbstractBuilder, AbstractPacket.AbstractHeader

Nested classes/interfaces inherited from interface Packet

Packet.Header

Field Summary

Fields

Modifier and Type	Field	Description
private final DnsPacket.DnsHeader	header
private static final long	serialVersionUID

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
DnsPacket.Builder	getBuilder()	Returns a new Builder object populated with this object's fields' values.
DnsPacket.DnsHeader	getHeader()	Returns the Header object representing this packet's header.
static DnsPacket	newPacket(byte[] rawData, int offset, int length)	A static factory method.

Methods inherited from class AbstractPacket

buildHexString, buildRawData, buildString, calcHashCode, calcLength, contains, equals, get, getOuterOf, getPayload, getRawData, hashCode, iterator, length, toHexString, toString

Methods inherited from class Object

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

Methods inherited from interface Iterable

forEach, spliterator

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

header

private final DnsPacket.DnsHeader header

Constructor Details

DnsPacket

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

Throws:

IllegalRawDataException

DnsPacket

private DnsPacket(DnsPacket.Builder builder)

Method Details

newPacket

public static DnsPacket newPacket(byte[] rawData,
 int offset,
 int length)
                           throws IllegalRawDataException

A static factory method. This method validates the arguments by ByteArrays.validateBounds(byte[], int, int), which may throw exceptions undocumented here.

Parameters:

rawData - rawData

offset - offset

length - length

Returns:

a new DnsPacket object.

Throws:

IllegalRawDataException - if parsing the raw data fails.

getHeader

public DnsPacket.DnsHeader getHeader()

Description copied from class: AbstractPacket

Returns the Header object representing this packet's header. This subclass have to override this method if the packet represented by the subclass has a header.

Specified by:

getHeader in interface Packet

Overrides:

getHeader in class AbstractPacket

Returns:

the Header object representing this packet's header. May be null if the header doesn't exist

getBuilder

public DnsPacket.Builder getBuilder()

Description copied from interface: Packet

Returns a new Builder object populated with this object's fields' values.

Specified by:

getBuilder in interface Packet

Specified by:

getBuilder in class AbstractPacket

Returns:

a new Builder object populated with this object's fields values