org.minidns.edns

Class Edns

java.lang.Object

org.minidns.edns.Edns

public class Edns
extends Object

EDNS - Extension Mechanism for DNS.

See Also:

RFC 6891 - Extension Mechanisms for DNS (EDNS(0))

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Edns.Builder Builder for creating EDNS instances.
static class	Edns.OptionCode The EDNS option code.

Field Summary

Fields

Modifier and Type	Field and Description
boolean	dnssecOk Whether DNSSEC OK flag is set.
int	extendedRcode 8-bit extended return code.
static int	FLAG_DNSSEC_OK Inform the dns server that the client supports DNSSEC.
int	flags 16-bit flags.
int	udpPayloadSize The UDP payload size.
List<EdnsOption>	variablePart The list of EDNS options.
int	version 8-bit version field.

Constructor Summary

Constructors

Constructor and Description
Edns(Edns.Builder builder) Creates an EDNS instance from a builder.
Edns(Record<OPT> optRecord) Creates an EDNS instance from an OPT record.

Method Summary

Modifier and Type	Method and Description
Record<OPT>	asRecord() Converts this EDNS instance to an OPT record.
String	asTerminalOutput() Returns the terminal output representation of this EDNS instance.
static Edns.Builder	builder() Creates a new builder for constructing EDNS instances.
static Edns	fromRecord(Record<? extends Data> record) Creates an EDNS instance from a record if it's an OPT record.
<O extends EdnsOption> O	getEdnsOption(Edns.OptionCode optionCode) Gets the EDNS option with the specified option code.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

dnssecOk

public final boolean dnssecOk

Whether DNSSEC OK flag is set.

extendedRcode

public final int extendedRcode

8-bit extended return code. RFC 6891 § 6.1.3 EXTENDED-RCODE

FLAG_DNSSEC_OK

public static final int FLAG_DNSSEC_OK

Inform the dns server that the client supports DNSSEC.

See Also:

Constant Field Values

flags

public final int flags

16-bit flags. RFC 6891 § 6.1.4

udpPayloadSize

public final int udpPayloadSize

The UDP payload size.

variablePart

public final List<EdnsOption> variablePart

The list of EDNS options.

version

public final int version

8-bit version field. RFC 6891 § 6.1.3 VERSION

Constructor Detail

Edns

public Edns(Edns.Builder builder)

Creates an EDNS instance from a builder.

Parameters:

builder - the builder containing EDNS configuration

Edns

public Edns(Record<OPT> optRecord)

Creates an EDNS instance from an OPT record.

Parameters:

optRecord - the OPT record

Method Detail

asRecord

public Record<OPT> asRecord()

Converts this EDNS instance to an OPT record.

Returns:

the OPT record

asTerminalOutput

public String asTerminalOutput()

Returns the terminal output representation of this EDNS instance.

Returns:

the terminal output representation

builder

public static Edns.Builder builder()

Creates a new builder for constructing EDNS instances.

Returns:

a new builder

fromRecord

public static Edns fromRecord(Record<? extends Data> record)

Creates an EDNS instance from a record if it's an OPT record.

Parameters:

record - the record to convert

Returns:

the EDNS instance if the record is an OPT record, null otherwise

getEdnsOption

public <O extends EdnsOption> O getEdnsOption(Edns.OptionCode optionCode)

Gets the EDNS option with the specified option code.

Type Parameters:

O - the type of the EDNS option

Parameters:

optionCode - the option code to search for

Returns:

the EDNS option if found, null otherwise

toString

public String toString()

Overrides:

toString in class Object