Package org.drasyl.handler.arq.gobackn

Class GoBackNArqReceiverHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

org.drasyl.handler.arq.gobackn.GoBackNArqReceiverHandler

All Implemented Interfaces:

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

public class GoBackNArqReceiverHandler
extends io.netty.channel.ChannelDuplexHandler

Performs the Go-Back-N ARQ receiver protocol.

This handler should be used together with GoBackNArqCodec, ByteToGoBackNArqDataCodec and GoBackNArqReceiverHandler.

  ChannelPipeline p = ...;
  ...
  p.addLast("arq_codec", new GoBackNArqCodec());
  p.addLast("arq_snd_handler", new GoBackNArqSenderHandler(150, Duration.ofMillis(100)));
  p.addLast("arg_rec_handler", new GoBackNArqReceiverHandler(Duration.ofMills(100).dividedBy(10)));
  p.addLast("buf_codec", new ByteToGoBackNArqDataCodec());
  ...
  p.addLast("handler", new HttpRequestHandler());
  

Nested Class Summary

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

io.netty.channel.ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor	Description
GoBackNArqReceiverHandler(Duration ackClock)
GoBackNArqReceiverHandler(UnsignedInteger nextSequenceNo, Duration ackClock)

Method Summary

Modifier and Type	Method	Description
void	channelActive(io.netty.channel.ChannelHandlerContext ctx)
void	channelInactive(io.netty.channel.ChannelHandlerContext ctx)
void	channelRead(io.netty.channel.ChannelHandlerContext ctx, Object msg)
void	handlerAdded(io.netty.channel.ChannelHandlerContext ctx)

Methods inherited from class io.netty.channel.ChannelDuplexHandler

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

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerRemoved, isSharable

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

handlerRemoved

Constructor Details

GoBackNArqReceiverHandler

public GoBackNArqReceiverHandler(UnsignedInteger nextSequenceNo,
 Duration ackClock)

Parameters:

nextSequenceNo - the next expected inbound sequence number

ackClock - the frequency of sending ACKs for received packages

GoBackNArqReceiverHandler

public GoBackNArqReceiverHandler(Duration ackClock)

Parameters:

ackClock - the frequency of sending ACKs for received packages

Method Details

channelActive

public void channelActive(io.netty.channel.ChannelHandlerContext ctx)
                   throws Exception

Specified by:

channelActive in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelActive in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

handlerAdded

public void handlerAdded(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

handlerAdded in interface io.netty.channel.ChannelHandler

Overrides:

handlerAdded in class io.netty.channel.ChannelHandlerAdapter

channelInactive

public void channelInactive(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

channelInactive in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelInactive in class io.netty.channel.ChannelInboundHandlerAdapter

channelRead

public void channelRead(io.netty.channel.ChannelHandlerContext ctx,
 Object msg)
                 throws Exception

Specified by:

channelRead in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelRead in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception