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.hipishare.chat.securetest; import org.apache.log4j.LogManager; import org.apache.log4j.Logger; import com.google.gson.Gson; import com.hipishare.chat.server.domain.MsgObject; import com.hipishare.chat.server.enums.CmdEnum; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.SimpleChannelInboundHandler; /** * Handles a client-side channel. */ public class SecureChatClientHandler extends SimpleChannelInboundHandler<MsgObject> { private static Logger LOG = LogManager.getLogger(SecureChatClientHandler.class.getName()); private final ByteBuf firstMessage; public SecureChatClientHandler() { /*firstMessage = Unpooled.buffer(EchoClient.SIZE); for (int i = 0; i < firstMessage.capacity(); i++) { firstMessage.writeByte((byte) i); }*/ MsgObject msgObj = new MsgObject(); Gson gson = new Gson(); msgObj.setC(CmdEnum.HEART_BEAT.getCmd()); msgObj.setM("o"); String msg = gson.toJson(msgObj); firstMessage = Unpooled.copiedBuffer(msg.getBytes()); } @Override public void channelActive(ChannelHandlerContext ctx) { LOG.info("???" + firstMessage.toString()); ctx.writeAndFlush(firstMessage); } @Override public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) { cause.printStackTrace(); ctx.close(); } @Override protected void channelRead0(ChannelHandlerContext ctx, MsgObject msg) throws Exception { LOG.info("?" + msg.getM()); if (CmdEnum.HEART_BEAT.getCmd() == msg.getC()) { MsgObject msgObj = new MsgObject(); Gson gson = new Gson(); msgObj.setC(CmdEnum.HEART_BEAT.getCmd()); msgObj.setM("o"); String msg2 = gson.toJson(msgObj); ByteBuf buf = Unpooled.copiedBuffer(msg2.getBytes()); ctx.writeAndFlush(buf); } } }