cat.tbq.hospital.nio.echoExample.EchoServerHandler.java Source code

Introduction

Here is the source code for cat.tbq.hospital.nio.echoExample.EchoServerHandler.java

Source

package cat.tbq.hospital.nio.echoExample;

/*
* 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.
*/

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

/**
 * Handler implementation for the echo server.
 */
@Sharable
public class EchoServerHandler extends ChannelInboundHandlerAdapter {

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {
        ByteBuf byteBuf = (ByteBuf) msg;
        int size = byteBuf.readableBytes();
        for (int i = 0; i < size; i++) {
            System.out.println("===" + (char) byteBuf.getByte(i));
            ;
        }
        ByteBuf firstMessage = Unpooled.buffer(20);
        firstMessage.writeBytes("hello how are you".getBytes());
        ctx.writeAndFlush(firstMessage);
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        //        ctx.flush();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        // Close the connection when an exception is raised.
        cause.printStackTrace();
        ctx.close();
    }
}