io.netty.handler.codec.base64

Class Base64Decoder

java.lang.Object

io.netty.channel.ChannelStateHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.MessageToMessageDecoder<ByteBuf,ByteBuf>

io.netty.handler.codec.base64.Base64Decoder

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler, ChannelInboundMessageHandler<ByteBuf>, ChannelStateHandler

@ChannelHandler.Sharable
public class Base64Decoder
extends MessageToMessageDecoder<ByteBuf,ByteBuf>

Decodes a Base64-encoded ByteBuf or US-ASCII String into a ByteBuf. Please note that this decoder must be used with a proper ByteToMessageDecoder such as DelimiterBasedFrameDecoder if you are using a stream-based transport such as TCP/IP. A typical decoder setup for TCP/IP would be:

 ChannelPipeline pipeline = ...;

 // Decoders
 pipeline.addLast("frameDecoder", new DelimiterBasedFrameDecoder(80, Delimiters.nulDelimiter()));
 pipeline.addLast("base64Decoder", new Base64Decoder());

 // Encoder
 pipeline.addLast("base64Encoder", new Base64Encoder());
 

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
Base64Decoder()
Base64Decoder(Base64Dialect dialect)

Method Summary

Methods

Modifier and Type	Method and Description
ByteBuf	decode(ChannelHandlerContext ctx, ByteBuf msg)
boolean	isDecodable(Object msg) Returns true if and only if the specified message can be decoded by this decoder.

Methods inherited from class io.netty.handler.codec.MessageToMessageDecoder

inboundBufferUpdated, newInboundBuffer

Methods inherited from class io.netty.channel.ChannelStateHandlerAdapter

afterAdd, afterRemove, beforeAdd, beforeRemove, channelActive, channelInactive, channelRegistered, channelUnregistered, exceptionCaught, userEventTriggered

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.netty.channel.ChannelStateHandler

channelActive, channelInactive, channelRegistered, channelUnregistered

Methods inherited from interface io.netty.channel.ChannelHandler

afterAdd, afterRemove, beforeAdd, beforeRemove, exceptionCaught, userEventTriggered

Constructor Detail

Base64Decoder

public Base64Decoder()

Base64Decoder

public Base64Decoder(Base64Dialect dialect)

Method Detail

isDecodable

public boolean isDecodable(Object msg)
                    throws Exception

Description copied from class: MessageToMessageDecoder

Returns true if and only if the specified message can be decoded by this decoder.

Overrides:

isDecodable in class MessageToMessageDecoder<ByteBuf,ByteBuf>

Parameters:

msg - the message

Throws:

Exception

decode

public ByteBuf decode(ChannelHandlerContext ctx,
             ByteBuf msg)
               throws Exception

Specified by:

decode in class MessageToMessageDecoder<ByteBuf,ByteBuf>

Throws:

Exception