Java tutorial
/** * Copyright (c) 2014 Virtue Studios * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package org.virtue.network.protocol.ondemand; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.codec.ByteToMessageDecoder; import java.util.List; import org.virtue.network.protocol.message.ondemand.OnDemandDropMessage; import org.virtue.network.protocol.message.ondemand.OnDemandEncryptionMessage; import org.virtue.network.protocol.message.ondemand.OnDemandInitMessage; import org.virtue.network.protocol.message.ondemand.OnDemandRequestMessage; import org.virtue.network.protocol.message.ondemand.OnDemandStateMessage; /** * @author Im Frizzy <skype:kfriz1998> * @since Aug 8, 2014 */ public class OnDemandDecoder extends ByteToMessageDecoder { /* (non-Javadoc) * @see io.netty.handler.codec.ByteToMessageDecoder#decode(io.netty.channel.ChannelHandlerContext, io.netty.buffer.ByteBuf, java.util.List) */ @Override protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> out) throws Exception { if (buf.readableBytes() < 6) { return; } int opcode = buf.readUnsignedByte(); if (opcode == 0 || opcode == 1) {// file priority request || normal request out.add(new OnDemandRequestMessage(opcode == 1, buf.readUnsignedByte(), buf.readInt())); } else if (opcode == 2 || opcode == 3) {// client logged in || logged out out.add(new OnDemandStateMessage(opcode == 2, (buf.readUnsignedByte() | buf.readInt()))); } else if (opcode == 4) {// encryption change out.add(new OnDemandEncryptionMessage(buf.readUnsignedByte(), buf.readInt())); } else if (opcode == 6) {// init connection out.add(new OnDemandInitMessage(buf.readUnsignedMedium(), buf.readShort())); } else if (opcode == 7) {// drop requests queue out.add(new OnDemandDropMessage(buf.readUnsignedByte() | buf.readInt())); } } }