Interface DnsOptPseudoRecord

All Superinterfaces:

DnsRecord

All Known Subinterfaces:

DnsOptEcsRecord

All Known Implementing Classes:

AbstractDnsOptPseudoRrRecord, DefaultDnsOptEcsRecord

public interface DnsOptPseudoRecord
extends DnsRecord

An OPT RR record.

This is used for Extension Mechanisms for DNS (EDNS(0)).

Field Summary

Fields inherited from interface DnsRecord

CLASS_ANY, CLASS_CHAOS, CLASS_CSNET, CLASS_HESIOD, CLASS_IN, CLASS_NONE

Modifier and Type	Field	Description
static final int	CLASS_ANY	DNS resource record class: ANY
static final int	CLASS_CHAOS	DNS resource record class: CHAOS
static final int	CLASS_CSNET	DNS resource record class: CSNET
static final int	CLASS_HESIOD	DNS resource record class: HESIOD
static final int	CLASS_IN	DNS resource record class: IN
static final int	CLASS_NONE	DNS resource record class: NONE

Method Summary

Modifier and Type	Method	Description
int	extendedRcode()	Returns the EXTENDED-RCODE which is encoded into DnsRecord.timeToLive().
int	flags()	Returns the 16-bit flags field which is encoded into the lower 16 bits of DnsRecord.timeToLive(), as laid out by RFC 6891.
int	version()	Returns the VERSION which is encoded into DnsRecord.timeToLive().

Methods inherited from interface DnsRecord

dnsClass, name, timeToLive, type

Modifier and Type	Method	Description
int	dnsClass()	Returns the class of this resource record.
String	name()	Returns the name of this resource record.
long	timeToLive()	Returns the time to live after reading for this resource record.
DnsRecordType	type()	Returns the type of this resource record.

Method Details

extendedRcode

int extendedRcode()

Returns the EXTENDED-RCODE which is encoded into DnsRecord.timeToLive().

version

int version()

Returns the VERSION which is encoded into DnsRecord.timeToLive().

flags

int flags()

Returns the 16-bit flags field which is encoded into the lower 16 bits of DnsRecord.timeToLive(), as laid out by RFC 6891.

DO, defined by RFC 3225, is the most significant bit of that field, so (flags() & 0x8000) != 0 tests for DNSSEC OK. Further bits are assigned by the IANA EDNS Header Flags registry; the remaining bits are Z, which senders set to zero and receivers ignore.