net.clackrouter.packets
Class DNSPacket

java.lang.Object
  net.clackrouter.protocol.data.VNSData
      net.clackrouter.packets.VNSPacket
          net.clackrouter.packets.DNSPacket

public class DNSPacket
extends VNSPacket

Represents a Domain Name System (DNS) packet.

Currently supports simple requests and responses with Query, Answer, Authority and Additional record types.

Nested Class Summary

static class	DNSPacket.Answer Contains DNS Answer information
static class	DNSPacket.Query Contains DNS Query information

Field Summary

static int	CLASS_INET
static int	DNS_PORT
static int	FLAGS_QUERY_RESPONSE_NO_ERROR
static int	FLAGS_QUERY_STANDARD
static short	HEADER_SIZE
static int	TYPE_A
static int	TYPE_CNAME
static int	TYPE_MX
static int	TYPE_NS

Fields inherited from class net.clackrouter.packets.VNSPacket

m_inputInterfaceName, m_length, m_level2Type, m_local_packet, m_nextHopIPAddr, m_nextHopMacAddr, m_outputInterfaceName, m_packetByteBuffer, mParentHeader

Constructor Summary

DNSPacket(java.nio.ByteBuffer buf)

DNSPacket(int transactionID, int flags)

Method Summary

void	addAdditionalRecord(DNSPacket.Answer a)
void	addAnswerRecord(DNSPacket.Answer a)
void	addAuthorityRecord(DNSPacket.Answer a)
void	addQueryRecord(DNSPacket.Query q)
DNSPacket.Answer	getAdditionalRecord(int i)
int	getAdditionalRecordCount()
DNSPacket.Answer	getAnswerRecord(int i)
int	getAnswerRecordCount()
DNSPacket.Answer	getAuthorityRecord(int i)
int	getAuthorityRecordCount()
short	getFlags()
short	getID()
static byte[]	getQNameArray(java.lang.String name)
DNSPacket.Query	getQueryRecord(int i)
int	getQueryRecordCount()
void	pack()
void	setFlags(short f)
void	setID(short id)

Methods inherited from class net.clackrouter.packets.VNSPacket

addToPath, get16bit, get32bit, getByteBuffer, getInputInterfaceName, getLength, getLevel2Type, getNextHopIPAddress, getNextHopMacAddress, getOutputInterfaceName, getParentHeader, getStringBuffer, isPacket, needsSourceAddress, setByteBuffer, setInputInterfaceName, setLevel2Type, setNeedsSourceAddress, setNextHopIPAddress, setNextHopMacAddress, setOutputInterfaceName, setParentHeader, toString

Methods inherited from class net.clackrouter.protocol.data.VNSData

isBanner, isClose, isHWInfo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

DNS_PORT

public static final int DNS_PORT

See Also:

Constant Field Values

HEADER_SIZE

public static final short HEADER_SIZE

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Constant Field Values

FLAGS_QUERY_RESPONSE_NO_ERROR

public static final int FLAGS_QUERY_RESPONSE_NO_ERROR

See Also:

Constant Field Values

FLAGS_QUERY_STANDARD

public static final int FLAGS_QUERY_STANDARD

See Also:

Constant Field Values

TYPE_A

public static final int TYPE_A

See Also:

Constant Field Values

TYPE_NS

public static final int TYPE_NS

See Also:

Constant Field Values

TYPE_CNAME

public static final int TYPE_CNAME

See Also:

Constant Field Values

TYPE_MX

public static final int TYPE_MX

See Also:

Constant Field Values

CLASS_INET

public static final int CLASS_INET

See Also:

Constant Field Values

Constructor Detail

DNSPacket

public DNSPacket(java.nio.ByteBuffer buf)
          throws java.lang.Exception

Throws:

java.lang.Exception

DNSPacket

public DNSPacket(int transactionID,
                 int flags)
          throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

addQueryRecord

public void addQueryRecord(DNSPacket.Query q)

addAnswerRecord

public void addAnswerRecord(DNSPacket.Answer a)

addAuthorityRecord

public void addAuthorityRecord(DNSPacket.Answer a)

addAdditionalRecord

public void addAdditionalRecord(DNSPacket.Answer a)

getQueryRecord

public DNSPacket.Query getQueryRecord(int i)

getAnswerRecord

public DNSPacket.Answer getAnswerRecord(int i)

getAuthorityRecord

public DNSPacket.Answer getAuthorityRecord(int i)

getAdditionalRecord

public DNSPacket.Answer getAdditionalRecord(int i)

getQueryRecordCount

public int getQueryRecordCount()

getAnswerRecordCount

public int getAnswerRecordCount()

getAuthorityRecordCount

public int getAuthorityRecordCount()

getAdditionalRecordCount

public int getAdditionalRecordCount()

getFlags

public short getFlags()

setFlags

public void setFlags(short f)

getID

public short getID()

setID

public void setID(short id)

pack

public void pack()

getQNameArray

public static byte[] getQNameArray(java.lang.String name)