Class DatagramDnsQueryEncoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelOutboundHandlerAdapter

io.netty.handler.codec.MessageToMessageEncoder<AddressedEnvelope<DnsQuery, InetSocketAddress>>

io.netty.handler.codec.dns.DatagramDnsQueryEncoder

All Implemented Interfaces:

ChannelHandler, ChannelOutboundHandler

@Sharable
public class DatagramDnsQueryEncoder
extends MessageToMessageEncoder<AddressedEnvelope<DnsQuery, InetSocketAddress>>

Encodes a DatagramDnsQuery (or an AddressedEnvelope of DnsQuery} into a DatagramPacket.

Nested Class Summary

Nested classes/interfaces inherited from interface ChannelHandler

ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor	Description
DatagramDnsQueryEncoder()	Creates a new encoder with the default record encoder.
DatagramDnsQueryEncoder(DnsRecordEncoder recordEncoder)	Creates a new encoder with the specified recordEncoder.

Method Summary

Modifier and Type	Method	Description
protected ByteBuf	allocateBuffer(ChannelHandlerContext ctx, AddressedEnvelope<DnsQuery, InetSocketAddress> msg)	Allocate a ByteBuf which will be used for constructing a datagram packet.
protected void	encode(ChannelHandlerContext ctx, AddressedEnvelope<DnsQuery, InetSocketAddress> in, List<Object> out)	Encode from one message to an other.

Methods inherited from class MessageToMessageEncoder

acceptOutboundMessage, write

Methods inherited from class ChannelOutboundHandlerAdapter

bind, close, connect, deregister, disconnect, flush, read

Methods inherited from class ChannelHandlerAdapter

ensureNotSharable, exceptionCaught, handlerAdded, handlerRemoved, isSharable

Methods inherited from class Object

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

Methods inherited from interface ChannelHandler

exceptionCaught, handlerAdded, handlerRemoved

Constructor Details

DatagramDnsQueryEncoder

public DatagramDnsQueryEncoder()

Creates a new encoder with the default record encoder.

DatagramDnsQueryEncoder

public DatagramDnsQueryEncoder(DnsRecordEncoder recordEncoder)

Creates a new encoder with the specified recordEncoder.

Method Details

encode

protected void encode(ChannelHandlerContext ctx,
 AddressedEnvelope<DnsQuery, InetSocketAddress> in,
 List<Object> out)
               throws Exception

Description copied from class: MessageToMessageEncoder

Encode from one message to an other. This method will be called for each written message that can be handled by this encoder.

Specified by:

encode in class MessageToMessageEncoder<AddressedEnvelope<DnsQuery, InetSocketAddress>>

Parameters:

ctx - the ChannelHandlerContext which this MessageToMessageEncoder belongs to

in - the message to encode to an other one

out - the List into which the encoded msg should be added needs to do some kind of aggregation

Throws:

Exception - is thrown if an error occurs

allocateBuffer

protected ByteBuf allocateBuffer(ChannelHandlerContext ctx,
 AddressedEnvelope<DnsQuery, InetSocketAddress> msg)
                          throws Exception

Allocate a ByteBuf which will be used for constructing a datagram packet. Sub-classes may override this method to return a ByteBuf with a perfect matching initial capacity.

Throws:

Exception