io.netty.example.udt.echo.rendezvous.MsgEchoPeerHandler Maven / Gradle / Ivy
/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.example.udt.echo.rendezvous;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.udt.UdtMessage;
import io.netty.channel.udt.nio.NioUdtProvider;
/**
* Handler implementation for the echo peer. It initiates the ping-pong traffic
* between the echo peers by sending the first message to the other peer on
* activation.
*/
public class MsgEchoPeerHandler extends SimpleChannelInboundHandler {
private final UdtMessage message;
public MsgEchoPeerHandler(final int messageSize) {
super(false);
final ByteBuf byteBuf = Unpooled.buffer(messageSize);
for (int i = 0; i < byteBuf.capacity(); i++) {
byteBuf.writeByte((byte) i);
}
message = new UdtMessage(byteBuf);
}
@Override
public void channelActive(final ChannelHandlerContext ctx) {
System.err.println("ECHO active " + NioUdtProvider.socketUDT(ctx.channel()).toStringOptions());
ctx.writeAndFlush(message);
}
@Override
public void channelRead0(ChannelHandlerContext ctx, UdtMessage message) {
ctx.write(message);
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void exceptionCaught(final ChannelHandlerContext ctx, final Throwable cause) {
cause.printStackTrace();
ctx.close();
}
}