Java tutorial
/******************************************************************************* * Copyright 2015 Peter Cashel (pacas00@petercashel.net) * * Licensed 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 net.petercashel.nettyCore.common.packetCore; import net.petercashel.nettyCore.common.PacketRegistry; import io.netty.buffer.ByteBuf; import io.netty.channel.Channel; import io.netty.channel.ChannelHandlerContext; public class PacketBase { public static int packetID = -1; public ByteBuf packet; public void sendPacket(ChannelHandlerContext ctx) { ByteBuf b = ctx.alloc().buffer(Packet.packetBufSize + Packet.packetHeaderSize, Packet.packetBufSize + Packet.packetHeaderSize); b.writeInt(PacketRegistry.GetOtherSide()); b.writeInt(packetID); b.writeBytes(packet); if (b.readableBytes() == (Packet.packetBufSize + Packet.packetHeaderSize)) { ctx.writeAndFlush(b); } else if (b.readableBytes() > (Packet.packetBufSize + Packet.packetHeaderSize)) { System.out.println("INVALID PACKET! DISCARDING!"); } else { b.writeZero(b.writableBytes()); if (b.readableBytes() == (Packet.packetBufSize + Packet.packetHeaderSize)) { ctx.writeAndFlush(b); } else if (b.readableBytes() > (Packet.packetBufSize + Packet.packetHeaderSize)) { System.out.println("INVALID PACKET! DISCARDING!"); } } } public void sendPacket(Channel c) { ByteBuf b = c.alloc().buffer(Packet.packetBufSize + Packet.packetHeaderSize, Packet.packetBufSize + Packet.packetHeaderSize); b.writeInt(PacketRegistry.GetOtherSide()); b.writeInt(packetID); b.writeBytes(packet); if (b.readableBytes() == (Packet.packetBufSize + Packet.packetHeaderSize)) { c.writeAndFlush(b); } else if (b.readableBytes() > (Packet.packetBufSize + Packet.packetHeaderSize)) { System.out.println("INVALID PACKET! DISCARDING!"); } else { b.writeZero(b.writableBytes()); if (b.readableBytes() == (Packet.packetBufSize + Packet.packetHeaderSize)) { c.writeAndFlush(b); } else if (b.readableBytes() > (Packet.packetBufSize + Packet.packetHeaderSize)) { System.out.println("INVALID PACKET! DISCARDING!"); } } } }