001/* 002 * Trident - A Multithreaded Server Alternative 003 * Copyright 2014 The TridentSDK Team 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package net.tridentsdk.server.netty.packet; 019 020import io.netty.buffer.ByteBuf; 021import net.tridentsdk.server.netty.ClientConnection; 022import net.tridentsdk.util.TridentLogger; 023 024import javax.annotation.concurrent.ThreadSafe; 025 026/** 027 * Used to represent any erroneous inPackets received 028 * 029 * @author The TridentSDK Team 030 */ 031@ThreadSafe 032public class UnknownPacket implements Packet { 033 @Override 034 public Packet decode(ByteBuf buf) { 035 return this; 036 } 037 038 /** 039 * {@inheritDoc} 040 * 041 * <p>Cannot be encoded. Throws UnsupportedOperationException</p> 042 */ 043 @Override 044 public void encode(ByteBuf buf) { 045 TridentLogger.get().error(new UnsupportedOperationException("Cannot serialize unknown packet")); 046 } 047 048 @Override 049 public int id() { 050 return -1; 051 } 052 053 /** 054 * {@inheritDoc} 055 * 056 * <p>Returns {@code null}, since we don't know where the packet came from</p> 057 */ 058 @Override 059 public PacketDirection direction() { 060 return null; 061 } 062 063 /** 064 * {@inheritDoc} 065 * 066 * <p>Does not do anything</p> 067 */ 068 @Override 069 public void handleReceived(ClientConnection connection) { 070 } 071}