com.dingwang.netty.handler.DiscardServerHandler.java Source code

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Here is the source code for com.dingwang.netty.handler.DiscardServerHandler.java

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/*
 * Copyright 2016 Zhongan.com All right reserved. This software is the
 * confidential and proprietary information of Zhongan.com ("Confidential
 * Information"). You shall not disclose such Confidential Information and shall
 * use it only in accordance with the terms of the license agreement you entered
 * into with Zhongan.com.
 */
package com.dingwang.netty.handler;

import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

/**
 * DiscardServerHandler.java??TODO ??
 * 
 * @author wangding_91@163.com 2016218 ?3:04:38
 */
public class DiscardServerHandler extends ChannelHandlerAdapter {

    /*
     * (non-Javadoc)
     * @see io.netty.channel.ChannelHandlerAdapter#channelRead(io.netty.channel.
     * ChannelHandlerContext, java.lang.Object)
     */
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        //        ByteBuf in = (ByteBuf) msg;

        //        try {
        //???
        //            StringBuilder sb = new StringBuilder();
        //            while (in.isReadable()) {
        //                sb.append((char) in.readByte());
        //            }
        //            System.out.println(sb.toString());

        //        } catch (Exception e) {
        //            ReferenceCountUtil.release(msg);
        //        }

        //?
        //ctx.write(Object)????ctx.flush()??
        //??cxt.writeAndFlush(msg)?
        System.out.println("server read" + msg.toString());
        ctx.writeAndFlush(msg);
    }

    /*
     * (non-Javadoc)
     * @see
     * io.netty.channel.ChannelHandlerAdapter#exceptionCaught(io.netty.channel.
     * ChannelHandlerContext, java.lang.Throwable)
     */
    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }

    /*
     * (non-Javadoc)
     * @see
     * io.netty.channel.ChannelHandlerAdapter#channelActive(io.netty.channel.
     * ChannelHandlerContext)
     */
    @Override
    //channelActive()??
    //32??
    public void channelActive(ChannelHandlerContext ctx) throws Exception {

        //????????32?
        //?4ByteBufChannelHandlerContext.alloc()?ByteBufAllocator
        //??
        //        final ByteBuf time = ctx.alloc().buffer(4);
        //        time.writeInt((int) (System.currentTimeMillis() / 1000L + 2208988800L));

        //???ChannelHandlerContext.write()(
        //writeAndFlush())ChannelFutureChannelFuture?I/O?
        //????Netty????
        //?????
        //?write()ChannelFuture??close()????
        //??,close()??ChannelFuture
        //        final ChannelFuture f = ctx.writeAndFlush(time);

        //?????ChannelFuture
        //ChannelFutureListener??ChannelFutureListener???
        //Channel????:
        //f.addListener(ChannelFutureListener.CLOSE);
        //        f.addListener(new ChannelFutureListener() {
        //            @Override
        //
        //            public void operationComplete(ChannelFuture future) {
        //                assert f == future;
        //                ctx.close();
        //
        //            }
        //        });
        System.out.println("test idle");
        ChannelFuture f = ctx.writeAndFlush("hhhh");
        f.addListener(ChannelFutureListener.CLOSE);

    }

}