Java tutorial
/* * 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 com.chen.opensourceframework.netty.copy; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelFuture; import io.netty.channel.ChannelFutureListener; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelInboundHandlerAdapter; import io.netty.util.ReferenceCountUtil; /** * Handles a server-side channel. */ public class DiscardServerHandler extends ChannelInboundHandlerAdapter { // (1) @Override public void channelRead(ChannelHandlerContext ctx, Object msg) { // (2) ByteBuf in = (ByteBuf) msg; try { while (in.isReadable()) { // (1) System.out.print((char) in.readByte()); System.out.flush(); } } finally { ReferenceCountUtil.release(msg); // (2) } // // System.out.println("?:..."); // ctx.write(msg); // (1) // ctx.flush(); // (2) } @Override public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) { // (4) // Close the connection when an exception is raised. cause.printStackTrace(); ctx.close(); } @Override public void channelActive(ChannelHandlerContext ctx) throws Exception { ChannelFuture f = ctx.writeAndFlush(new UnixTime()); f.addListener(ChannelFutureListener.CLOSE); } }