Top Description Fields Constructors Methods
io.netty.handler.codec.dns

public Class DefaultDnsRecordDecoder

extends Object
implements DnsRecordDecoder
Class Inheritance
All Implemented Interfaces
io.netty.handler.codec.dns.DnsRecordDecoder
Annotations
@UnstableApi
Imports
io.netty.buffer.ByteBuf, io.netty.util.internal.UnstableApi
The default DnsRecordDecoder implementation.
See Also
DefaultDnsRecordEncoder

Field Summary

Modifier and TypeField and Description
pack-priv static final String
ROOT

Constructor Summary

AccessConstructor and Description
protected
DefaultDnsRecordDecoder()

Creates a new instance.

Method Summary

Modifier and TypeMethod and Description
public static String

Returns:

the domain name for an entry
decodeName(ByteBuf
the byte buffer containing the DNS packet
in)

Retrieves a domain name given a buffer containing a DNS packet.

protected String

Returns:

the domain name for an entry
decodeName0(ByteBuf
the byte buffer containing the DNS packet
in)

Retrieves a domain name given a buffer containing a DNS packet.

public final DnsQuestion
decodeQuestion(ByteBuf
the input buffer which contains a DNS question at its reader index
in)

Implements io.netty.handler.codec.dns.DnsRecordDecoder.decodeQuestion.

Decodes a DNS question into its object representation.
public final <T extends DnsRecord> T
decodeRecord(ByteBuf
the input buffer which contains a DNS record at its reader index
in)

Implements io.netty.handler.codec.dns.DnsRecordDecoder.decodeRecord.

Decodes a DNS record into its object representation.
protected DnsRecord

Returns:

a DnsRawRecord. Override this method to decode RDATA and return other record implementation.
decodeRecord(String
the domain name of the record
name, DnsRecordType
the type of the record
type, int
the class of the record
dnsClass, long
the TTL of the record
timeToLive, ByteBuf
the ByteBuf that contains the RDATA
in, int
the start offset of the RDATA in in
offset, int
the length of the RDATA
length)

Decodes a record from the information decoded so far by decodeRecord(ByteBuf).

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

ROOTback to summary
pack-priv static final String ROOT

Constructor Detail

DefaultDnsRecordDecoderback to summary
protected DefaultDnsRecordDecoder()

Creates a new instance.

Method Detail

decodeNameback to summary
public static String decodeName(ByteBuf in)

Retrieves a domain name given a buffer containing a DNS packet. If the name contains a pointer, the position of the buffer will be set to directly after the pointer's index after the name has been read.

Parameters
in:ByteBuf

the byte buffer containing the DNS packet

Returns:String

the domain name for an entry

decodeName0back to summary
protected String decodeName0(ByteBuf in)

Retrieves a domain name given a buffer containing a DNS packet. If the name contains a pointer, the position of the buffer will be set to directly after the pointer's index after the name has been read.

Parameters
in:ByteBuf

the byte buffer containing the DNS packet

Returns:String

the domain name for an entry

decodeQuestionback to summary
public final DnsQuestion decodeQuestion(ByteBuf in) throws Exception

Implements io.netty.handler.codec.dns.DnsRecordDecoder.decodeQuestion.

Doc from io.netty.handler.codec.dns.DnsRecordDecoder.decodeQuestion.

Decodes a DNS question into its object representation.

Parameters
in:ByteBuf

the input buffer which contains a DNS question at its reader index

Annotations
@Override
decodeRecordback to summary
public final <T extends DnsRecord> T decodeRecord(ByteBuf in) throws Exception

Implements io.netty.handler.codec.dns.DnsRecordDecoder.decodeRecord.

Doc from io.netty.handler.codec.dns.DnsRecordDecoder.decodeRecord.

Decodes a DNS record into its object representation.

Parameters
in:ByteBuf

the input buffer which contains a DNS record at its reader index

Returns:T

the decoded record, or null if there are not enough data in the input buffer

Annotations
@Override
decodeRecordback to summary
protected DnsRecord decodeRecord(String name, DnsRecordType type, int dnsClass, long timeToLive, ByteBuf in, int offset, int length) throws Exception

Decodes a record from the information decoded so far by decodeRecord(ByteBuf).

Parameters
name:String

the domain name of the record

type:DnsRecordType

the type of the record

dnsClass:int

the class of the record

timeToLive:long

the TTL of the record

in:ByteBuf

the ByteBuf that contains the RDATA

offset:int

the start offset of the RDATA in in

length:int

the length of the RDATA

Returns:DnsRecord

a DnsRawRecord. Override this method to decode RDATA and return other record implementation.