/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.net.rlpx.discover;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.DatagramPacket;
import io.netty.channel.socket.nio.NioDatagramChannel;
import org.ethereum.crypto.ECKey;
import org.ethereum.net.rlpx.*;
import org.ethereum.net.rlpx.discover.table.NodeTable;
import org.ethereum.util.Functional;
import org.slf4j.LoggerFactory;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MessageHandler extends SimpleChannelInboundHandler<DiscoveryEvent>
implements Functional.Consumer<DiscoveryEvent> {
static final org.slf4j.Logger logger = LoggerFactory.getLogger("discover");
public Channel channel;
NodeManager nodeManager;
public MessageHandler(NioDatagramChannel ch, NodeManager nodeManager) {
channel = ch;
this.nodeManager = nodeManager;
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
nodeManager.channelActivated();
}
@Override
public void channelRead0(ChannelHandlerContext ctx, DiscoveryEvent event) throws Exception {
nodeManager.handleInbound(event);
}
@Override
public void accept(DiscoveryEvent discoveryEvent) {
InetSocketAddress address = discoveryEvent.getAddress();
sendPacket(discoveryEvent.getMessage().getPacket(), address);
}
void sendPacket(byte[] wire, InetSocketAddress address) {
DatagramPacket packet = new DatagramPacket(Unpooled.copiedBuffer(wire), address);
channel.write(packet);
channel.flush();
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
logger.debug("Discover channel error" + cause);
ctx.close();
// We don't close the channel because we can keep serving requests.
}
}