nettyechoclientdemo.EchoClientHandler.java Source code

Introduction

Here is the source code for nettyechoclientdemo.EchoClientHandler.java

Source

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package nettyechoclientdemo;

import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

/**
 *
 * @author allen
 */
public class EchoClientHandler extends ChannelHandlerAdapter {

    private static final String ECHO_REQ = "Hi, Allen. Welcome to Netty.";

    private int counter;

    public EchoClientHandler() {
        counter = 0;
    } //EchoClientHandler()

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        for (int i = 0; i < 100; i++) {
            ctx.writeAndFlush(Unpooled.copiedBuffer((ECHO_REQ + "$_").getBytes()));
        }
    } //channelRead()

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        System.out.println("This is " + ++counter + " times receive server : [" + (String) msg + "]");
    } //channelRead()

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

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    } //exceptionCaught

} //EchoClientHandler