io.nadron.handlers.netty

Class ProtocolMultiplexerDecoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.ByteToMessageDecoder

io.nadron.handlers.netty.ProtocolMultiplexerDecoder

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler

public class ProtocolMultiplexerDecoder
extends io.netty.handler.codec.ByteToMessageDecoder

This class can be used to switch login-protocol based on the incoming bytes sent by a client. So, based on the incoming bytes, it is possible to set SSL enabled, normal HTTP, default nadron protocol, or custom user protocol for allowing client to login to nadron. The appropriate protocol searcher needs to be injected to this class. Since this class is a non-singleton, the protocol searchers and other dependencies should actually be injected to ProtocolMultiplexerChannelInitializer class and then passed in while instantiating this class.

Author:

Abraham Menacherry

Nested Class Summary

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

io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
private int	bytesForProtocolCheck
private static org.slf4j.Logger	LOG
private LoginProtocol	loginProtocol

Constructor Summary

Constructors

Constructor and Description
ProtocolMultiplexerDecoder(int bytesForProtocolCheck, LoginProtocol loginProtocol)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	close(io.netty.buffer.ByteBuf buffer, io.netty.channel.ChannelHandlerContext ctx)
protected void	decode(io.netty.channel.ChannelHandlerContext ctx, io.netty.buffer.ByteBuf in, List<Object> out)
int	getBytesForProtocolCheck()
LoginProtocol	getLoginProtocol()

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

actualReadableBytes, callDecode, channelInactive, channelRead, channelReadComplete, decodeLast, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setSingleDecode

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

exceptionCaught, handlerAdded

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.ChannelHandler

exceptionCaught, handlerAdded

Field Detail

LOG

private static final org.slf4j.Logger LOG

loginProtocol

private final LoginProtocol loginProtocol

bytesForProtocolCheck

private final int bytesForProtocolCheck

Constructor Detail

ProtocolMultiplexerDecoder

public ProtocolMultiplexerDecoder(int bytesForProtocolCheck,
                          LoginProtocol loginProtocol)

Method Detail

decode

protected void decode(io.netty.channel.ChannelHandlerContext ctx,
          io.netty.buffer.ByteBuf in,
          List<Object> out)
               throws Exception

Specified by:

decode in class io.netty.handler.codec.ByteToMessageDecoder

Throws:

Exception

close

protected void close(io.netty.buffer.ByteBuf buffer,
         io.netty.channel.ChannelHandlerContext ctx)

getLoginProtocol

public LoginProtocol getLoginProtocol()

getBytesForProtocolCheck

public int getBytesForProtocolCheck()