com.alibaba.rocketmq.shade.io.netty.example.objectecho.ObjectEchoClientHandler 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.objectecho;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import java.util.ArrayList;
import java.util.List;
/**
* Handler implementation for the object echo client. It initiates the
* ping-pong traffic between the object echo client and server by sending the
* first message to the server.
*/
public class ObjectEchoClientHandler extends ChannelInboundHandlerAdapter {
private final List firstMessage;
/**
* Creates a client-side handler.
*/
public ObjectEchoClientHandler() {
firstMessage = new ArrayList(ObjectEchoClient.SIZE);
for (int i = 0; i < ObjectEchoClient.SIZE; i ++) {
firstMessage.add(Integer.valueOf(i));
}
}
@Override
public void channelActive(ChannelHandlerContext ctx) {
// Send the first message if this handler is a client-side handler.
ctx.writeAndFlush(firstMessage);
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
// Echo back the received object to the server.
ctx.write(msg);
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
}