org.xbill.DNS
Class Header

java.lang.Object
  |
  +--org.xbill.DNS.Header

public class Header

extends Object

A DNS message header

See Also:

Message

Constructor Summary

Header()
Create a new empty header with a random message id

Header(DataByteInputStream in)
Parses a Header from a stream containing DNS wire format.

Header(int _id)
Create a new empty header.

Method Summary

Object	clone()
int	getCount(int field) Retrieves the record count for the given section
boolean	getFlag(int bit) Retrieves a flag
int	getID() Retrieves the message ID
byte	getOpcode() Retrieves the mesasge's opcode
short	getRcode() Retrieves the mesasge's rcode
String	printFlags() Converts the header's flags into a String
void	setFlag(int bit) Sets a flag to the supplied value
void	setID(int _id) Sets the message ID
void	setOpcode(byte value) Sets the message's opcode
void	setRcode(short value) Sets the message's rcode
String	toString() Converts the header into a String
byte[]	toWire()
void	unsetFlag(int bit) Sets a flag to the supplied value

Methods inherited from class java.lang.Object

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

Constructor Detail

Header

public Header(int _id)

Create a new empty header.

Parameters:

id - The message id

Header

public Header()

Create a new empty header with a random message id

Header

public Header(DataByteInputStream in)
       throws IOException

Parses a Header from a stream containing DNS wire format. This normally isn't useful to clients.

Method Detail

toWire

public byte[] toWire()
              throws IOException

setFlag

public void setFlag(int bit)

Sets a flag to the supplied value

See Also:

Flags

unsetFlag

public void unsetFlag(int bit)

Sets a flag to the supplied value

See Also:

Flags

getFlag

public boolean getFlag(int bit)

Retrieves a flag

See Also:

Flags

getID

public int getID()

Retrieves the message ID

setID

public void setID(int _id)

Sets the message ID

setRcode

public void setRcode(short value)

Sets the message's rcode

See Also:

Rcode

getRcode

public short getRcode()

Retrieves the mesasge's rcode

See Also:

Rcode

setOpcode

public void setOpcode(byte value)

Sets the message's opcode

See Also:

Opcode

getOpcode

public byte getOpcode()

Retrieves the mesasge's opcode

See Also:

Opcode

getCount

public int getCount(int field)

Retrieves the record count for the given section

See Also:

Section

printFlags

public String printFlags()

Converts the header's flags into a String

toString

public String toString()

Converts the header into a String

Overrides:

toString in class Object

clone

public Object clone()

Overrides:

clone in class Object