Package org.drasyl.handler.remote

Class LocalNetworkDiscovery

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

org.drasyl.handler.remote.LocalNetworkDiscovery

All Implemented Interfaces:

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

public class LocalNetworkDiscovery
extends io.netty.channel.ChannelDuplexHandler

This handler, along with the UdpMulticastServer or UdpBroadcastServer, is used to discover other nodes on the local network via IP multicast or broadcast.

For this purpose, the above-mentioned server forwards received multicast/broadcast HelloMessages to this handler, which thus becomes aware of other nodes in the local network. In case no HelloMessage has been received for a longer period of time, the other node is considered stale.

In addition, this handler periodically sends a HelloMessage messages to a given multicast/broadcast address so that other nodes become aware of this node.

See Also:

UdpMulticastServer, UdpBroadcastServer

Nested Class Summary

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

io.netty.channel.ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor	Description
LocalNetworkDiscovery(int networkId, long pingIntervalMillis, long pingTimeoutMillis, IdentityPublicKey myPublicKey, ProofOfWork myProofOfWork, InetSocketAddress recipient)

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	write(io.netty.channel.ChannelHandlerContext ctx, Object msg, io.netty.channel.ChannelPromise promise)

Methods inherited from class io.netty.channel.ChannelDuplexHandler

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

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, 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

handlerAdded, handlerRemoved

Constructor Detail

LocalNetworkDiscovery

public LocalNetworkDiscovery(int networkId,
                             long pingIntervalMillis,
                             long pingTimeoutMillis,
                             IdentityPublicKey myPublicKey,
                             ProofOfWork myProofOfWork,
                             InetSocketAddress recipient)

Method Detail

channelRead

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

Specified by:

channelRead in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelRead in class io.netty.channel.ChannelInboundHandlerAdapter

write

public void write(io.netty.channel.ChannelHandlerContext ctx,
                  Object msg,
                  io.netty.channel.ChannelPromise promise)

Specified by:

write in interface io.netty.channel.ChannelOutboundHandler

Overrides:

write in class io.netty.channel.ChannelDuplexHandler

channelActive

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

Specified by:

channelActive in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelActive in class io.netty.channel.ChannelInboundHandlerAdapter

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