Java tutorial
package com.mobius.software.android.iotbroker.mqtt.net; /** * Mobius Software LTD * Copyright 2015-2016, Mobius Software LTD * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelHandler.Sharable; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.codec.MessageToByteEncoder; import com.mobius.software.android.iotbroker.mqtt.parser.MQParser; import com.mobius.software.android.iotbroker.mqtt.parser.header.api.MQMessage; @Sharable public class MQEncoder extends MessageToByteEncoder<MQMessage> { @Override protected void encode(ChannelHandlerContext ctx, MQMessage message, ByteBuf out) throws Exception { ByteBuf buf = MQParser.encode(message); out.writeBytes(buf); } }