Class DnsResourceRecord

java.lang.Object

org.pcap4j.packet.DnsResourceRecord

All Implemented Interfaces:

Serializable

public final class DnsResourceRecord
extends Object
implements Serializable

DNS Resource record

                                1  1  1  1  1  1
  0  1  2  3  4  5  6  7  8  9  0  1  2  3  4  5
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                                               |
/                                               /
/                      NAME                     /
|                                               |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                      TYPE                     |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                     CLASS                     |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                      TTL                      |
|                                               |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                   RDLENGTH                    |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--|
/                     RDATA                     /
/                                               /
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

Since:

pcap4j 1.7.1

See Also:

• RFC 1035
• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	DnsResourceRecord.Builder
static interface	DnsResourceRecord.DnsRData	The interface representing an RDATA.

Field Summary

Fields

Modifier and Type	Field	Description
private final DnsClass	dataClass
private final DnsResourceRecordType	dataType
private final DnsDomainName	name
private final DnsResourceRecord.DnsRData	rData
private final short	rdLength
private static final long	serialVersionUID
private final int	ttl

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
private String	convertToString(String indent, byte[] headerRawData)
boolean	equals(Object o)
DnsResourceRecord.Builder	getBuilder()
DnsClass	getDataClass()
DnsResourceRecordType	getDataType()
DnsDomainName	getName()
byte[]	getRawData()
DnsResourceRecord.DnsRData	getRData()
short	getRdLength()
int	getRdLengthAsInt()
int	getTtl()
long	getTtlAsLong()
int	hashCode()
int	length()
static DnsResourceRecord	newInstance(byte[] rawData, int offset, int length)	A static factory method.
String	toString()
String	toString(String indent)
String	toString(String indent, byte[] headerRawData)

Methods inherited from class Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

name

private final DnsDomainName name

dataType

private final DnsResourceRecordType dataType

dataClass

private final DnsClass dataClass

ttl

private final int ttl

rdLength

private final short rdLength

rData

private final DnsResourceRecord.DnsRData rData

Constructor Details

DnsResourceRecord

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

Throws:

IllegalRawDataException

DnsResourceRecord

private DnsResourceRecord(DnsResourceRecord.Builder builder)

Method Details

newInstance

public static DnsResourceRecord newInstance(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 DnsResourceRecord object.

Throws:

IllegalRawDataException - if parsing the raw data fails.

getName

public DnsDomainName getName()

Returns:

name

getDataType

public DnsResourceRecordType getDataType()

Returns:

dataType

getDataClass

public DnsClass getDataClass()

Returns:

dataClass

getTtl

public int getTtl()

Returns:

ttl

getTtlAsLong

public long getTtlAsLong()

Returns:

ttl

getRdLength

public short getRdLength()

Returns:

rdLength

getRdLengthAsInt

public int getRdLengthAsInt()

Returns:

rdLength

getRData

public DnsResourceRecord.DnsRData getRData()

Returns:

rData. May be null.

getBuilder

public DnsResourceRecord.Builder getBuilder()

Returns:

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

getRawData

public byte[] getRawData()

Returns:

the raw data.

length

public int length()

Returns:

length

toString

public String toString()

Overrides:

toString in class Object

toString

public String toString(String indent)

Parameters:

indent - indent

Returns:

String representation of this object.

toString

public String toString(String indent,
 byte[] headerRawData)

Parameters:

indent - indent

headerRawData - the raw data of the DNS header including this resource record.

Returns:

String representation of this object.

convertToString

private String convertToString(String indent,
 byte[] headerRawData)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object