org.xbill.DNS

Class Flags

java.lang.Object

org.xbill.DNS.Flags

public final class Flags
extends Object

Constants and functions relating to flags in the DNS header.

Author:

Brian Wellington

Field Summary

Fields

Modifier and Type	Field and Description
static byte	AA authoritative answer
static byte	AD authenticated data
static byte	CD (security) checking disabled
static int	DO dnssec ok (extended)
static byte	QR query/response
static byte	RA recursion available
static byte	RD recursion desired
static byte	TC truncated

Method Summary

Modifier and Type	Method and Description
static boolean	isFlag(int index) Indicates if a bit in the flags field is a flag or not.
static String	string(int i) Converts a numeric Flag into a String
static int	value(String s) Converts a String representation of an Flag into its numeric value

Methods inherited from class java.lang.Object

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

Field Detail

QR

public static final byte QR

query/response

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Constant Field Values

AA

public static final byte AA

authoritative answer

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Constant Field Values

TC

public static final byte TC

truncated

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Constant Field Values

RD

public static final byte RD

recursion desired

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Constant Field Values

RA

public static final byte RA

recursion available

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Constant Field Values

AD

public static final byte AD

authenticated data

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Constant Field Values

CD

public static final byte CD

(security) checking disabled

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Constant Field Values

DO

public static final int DO

dnssec ok (extended)

See Also:

Constant Field Values

Method Detail

string

public static String string(int i)

Converts a numeric Flag into a String

value

public static int value(String s)

Converts a String representation of an Flag into its numeric value

isFlag

public static boolean isFlag(int index)

Indicates if a bit in the flags field is a flag or not. If it's part of the rcode or opcode, it's not.