Class TcpDnsQueryDecoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.ByteToMessageDecoder

io.netty.handler.codec.LengthFieldBasedFrameDecoder

io.netty.handler.codec.dns.TcpDnsQueryDecoder

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler

public final class TcpDnsQueryDecoder
extends LengthFieldBasedFrameDecoder

Nested Class Summary

Nested classes/interfaces inherited from class ByteToMessageDecoder

ByteToMessageDecoder.Cumulator

Nested classes/interfaces inherited from interface ChannelHandler

ChannelHandler.Sharable

Field Summary

Fields inherited from class ByteToMessageDecoder

COMPOSITE_CUMULATOR, MERGE_CUMULATOR

Constructor Summary

Constructors

Constructor	Description
TcpDnsQueryDecoder()	Creates a new decoder with the default record decoder.
TcpDnsQueryDecoder(DnsRecordDecoder decoder, int maxFrameLength)	Creates a new decoder with the specified decoder.

Method Summary

Modifier and Type	Method	Description
protected Object	decode(ChannelHandlerContext ctx, ByteBuf in)	Create a frame out of the ByteBuf and return it.

Methods inherited from class LengthFieldBasedFrameDecoder

decode, extractFrame, getUnadjustedFrameLength

Methods inherited from class ByteToMessageDecoder

actualReadableBytes, callDecode, channelInactive, channelRead, channelReadComplete, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode, userEventTriggered

Methods inherited from class ChannelInboundHandlerAdapter

channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught

Methods inherited from class ChannelHandlerAdapter

ensureNotSharable, handlerAdded, isSharable

Methods inherited from class Object

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

Methods inherited from interface ChannelHandler

handlerAdded

Constructor Details

TcpDnsQueryDecoder

public TcpDnsQueryDecoder()

Creates a new decoder with the default record decoder.

TcpDnsQueryDecoder

public TcpDnsQueryDecoder(DnsRecordDecoder decoder,
 int maxFrameLength)

Creates a new decoder with the specified decoder.

Method Details

decode

protected Object decode(ChannelHandlerContext ctx,
 ByteBuf in)
                 throws Exception

Description copied from class: LengthFieldBasedFrameDecoder

Create a frame out of the ByteBuf and return it.

Overrides:

decode in class LengthFieldBasedFrameDecoder

Parameters:

ctx - the ChannelHandlerContext which this ByteToMessageDecoder belongs to

in - the ByteBuf from which to read data

Returns:

frame the ByteBuf which represent the frame or null if no frame could be created.

Throws:

Exception