Merge branch 'master' into gh-pages

ItemDisguise/.classpath

@@ -7,12 +7,6 @@
 		</attributes>
 	</classpathentry>
 	<classpathentry combineaccessrules="false" kind="src" path="/ProtocolLib"/>
-	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
-		<attributes>
-			<attribute name="optional" value="true"/>
-			<attribute name="maven.pomderived" value="true"/>
-		</attributes>
-	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6">
 		<attributes>
 			<attribute name="maven.pomderived" value="true"/>

ProtocolLib/pom.xml

@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.comphenix.protocol</groupId>
   <artifactId>ProtocolLib</artifactId>
-  <version>2.2.0</version>
+  <version>2.3.0</version>
   <packaging>jar</packaging>
   <description>Provides read/write access to the Minecraft protocol.</description>
   

ProtocolLib/src/main/java/com/comphenix/protocol/CleanupStaticMembers.java

@@ -27,6 +27,9 @@ import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.events.ListeningWhitelist;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.injector.BukkitUnwrapper;
+import com.comphenix.protocol.injector.server.AbstractInputStreamLookup;
+import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
+import com.comphenix.protocol.injector.spigot.SpigotPacketInjector;
 import com.comphenix.protocol.reflect.FieldUtils;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.reflect.MethodUtils;
@@ -36,9 +39,11 @@ import com.comphenix.protocol.reflect.compiler.StructureCompiler;
 import com.comphenix.protocol.reflect.instances.CollectionGenerator;
 import com.comphenix.protocol.reflect.instances.DefaultInstances;
 import com.comphenix.protocol.reflect.instances.PrimitiveGenerator;
+import com.comphenix.protocol.utility.MinecraftReflection;
 import com.comphenix.protocol.wrappers.ChunkPosition;
 import com.comphenix.protocol.wrappers.WrappedDataWatcher;
 import com.comphenix.protocol.wrappers.WrappedWatchableObject;
+import com.comphenix.protocol.wrappers.nbt.io.NbtBinarySerializer;
 
 /**
  * Used to fix ClassLoader leaks that may lead to filling up the permanent generation.
@@ -66,7 +71,9 @@ class CleanupStaticMembers {
 				PrimitiveGenerator.class, FuzzyReflection.class, MethodUtils.class, 
 				BackgroundCompiler.class, StructureCompiler.class,
 				ObjectWriter.class, Packets.Server.class, Packets.Client.class, 
-				ChunkPosition.class, WrappedDataWatcher.class, WrappedWatchableObject.class
+				ChunkPosition.class, WrappedDataWatcher.class, WrappedWatchableObject.class,
+				AbstractInputStreamLookup.class, TemporaryPlayerFactory.class, SpigotPacketInjector.class,
+				MinecraftReflection.class, NbtBinarySerializer.class
 		};
 							   			
 		String[] internalClasses = {
@@ -76,14 +83,14 @@ class CleanupStaticMembers {
 			 "com.comphenix.protocol.injector.player.NetworkObjectInjector",
 			 "com.comphenix.protocol.injector.player.NetworkServerInjector",
 			 "com.comphenix.protocol.injector.player.PlayerInjector",
-			 "com.comphenix.protocol.injector.player.TemporaryPlayerFactory",
 			 "com.comphenix.protocol.injector.EntityUtilities",
 			 "com.comphenix.protocol.injector.packet.PacketRegistry",
 			 "com.comphenix.protocol.injector.packet.PacketInjector",
 			 "com.comphenix.protocol.injector.packet.ReadPacketModifier",
 			 "com.comphenix.protocol.injector.StructureCache",
 			 "com.comphenix.protocol.reflect.compiler.BoxingHelper",
-			 "com.comphenix.protocol.reflect.compiler.MethodDescriptor"
+			 "com.comphenix.protocol.reflect.compiler.MethodDescriptor",
+			 "com.comphenix.protocol.wrappers.nbt.WrappedElement",
 		};
 		
 		resetClasses(publicClasses);

ProtocolLib/src/main/java/com/comphenix/protocol/ProtocolLibrary.java

@@ -40,7 +40,9 @@ import com.comphenix.protocol.injector.PacketFilterManager;
 import com.comphenix.protocol.injector.PacketFilterManager.PlayerInjectHooks;
 import com.comphenix.protocol.metrics.Statistics;
 import com.comphenix.protocol.metrics.Updater;
+import com.comphenix.protocol.metrics.Updater.UpdateResult;
 import com.comphenix.protocol.reflect.compiler.BackgroundCompiler;
+import com.comphenix.protocol.utility.ChatExtensions;
 
 /**
  * The main entry point for ProtocolLib.
@@ -134,7 +136,10 @@ public class ProtocolLibrary extends JavaPlugin {
 			updater = new Updater(this, logger, "protocollib", getFile(), "protocol.info");
 			
 			unhookTask = new DelayedSingleTask(this);
-			protocolManager = new PacketFilterManager(getClassLoader(), getServer(), unhookTask, detailedReporter);
+			protocolManager = new PacketFilterManager(
+					getClassLoader(), getServer(), unhookTask, detailedReporter);
+			
+			// Setup error reporter
 			detailedReporter.addGlobalParameter("manager", protocolManager);
 			
 			// Update injection hook
@@ -215,6 +220,24 @@ public class ProtocolLibrary extends JavaPlugin {
 			// Don't do anything else!
 			if (manager == null)
 				return;
+			// Silly plugin reloaders!
+			if (protocolManager == null) {
+				Logger directLogging = Logger.getLogger("Minecraft");
+				String[] message = new String[] { 
+						" PROTOCOLLIB DOES NOT SUPPORT PLUGIN RELOADERS. ",
+						" PLEASE USE THE BUILT-IN RELOAD COMMAND. ",
+				};
+				
+				// Print as severe
+				for (String line : ChatExtensions.toFlowerBox(message, "*", 3, 1)) {
+					directLogging.severe(line);
+				}
+				disablePlugin();
+				return;
+			}
+			
+			// Perform logic when the world has loaded
+			protocolManager.postWorldLoaded();
 			
 			// Initialize background compiler
 			if (backgroundCompiler == null && config.isBackgroundCompilerEnabled()) {
@@ -422,16 +445,22 @@ public class ProtocolLibrary extends JavaPlugin {
 		if (redirectHandler != null) {
 			logger.removeHandler(redirectHandler);
 		}
+		if (protocolManager != null) 
+			protocolManager.close();
+		else
+			return; // Plugin reloaders!
 	
-		unhookTask.close();
+		if (unhookTask != null) 
-		protocolManager.close();
+			unhookTask.close();
 		protocolManager = null;
 		statistisc = null;
 		reporter = null;
 		
 		// Leaky ClassLoader begone!
-		CleanupStaticMembers cleanup = new CleanupStaticMembers(getClassLoader(), reporter);
+		if (updater == null || updater.getResult() != UpdateResult.SUCCESS) {
-		cleanup.resetAll();
+			CleanupStaticMembers cleanup = new CleanupStaticMembers(getClassLoader(), reporter);
+			cleanup.resetAll();
+		}
 	}
 	
 	// Get the Bukkit logger first, before we try to create our own

ProtocolLib/src/main/java/com/comphenix/protocol/concurrency/BlockingHashMap.java

@@ -19,15 +19,21 @@ package com.comphenix.protocol.concurrency;
 
 import java.util.Collection;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.TimeUnit;
 
-import com.google.common.collect.MapMaker;
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.RemovalCause;
+import com.google.common.cache.RemovalListener;
+import com.google.common.cache.RemovalNotification;
 
 /**
  * A map that supports blocking on read operations. Null keys are not supported.
  * <p>
- * Keys are stored as weak references, and will be automatically removed once they've all been dereferenced.
+ * Values are stored as weak references, and will be automatically removed once they've all been dereferenced.
  * <p>
  * @author Kristian
  *
@@ -35,19 +41,46 @@ import com.google.common.collect.MapMaker;
  * @param <TValue> - type of the value.
  */
 public class BlockingHashMap<TKey, TValue> {
-
 	// Map of values
+	private final Cache<TKey, TValue> backingCache;
 	private final ConcurrentMap<TKey, TValue> backingMap;
 	
 	// Map of locked objects
 	private final ConcurrentMap<TKey, Object> locks;
 	
+	/**
+	 * Retrieve a cache loader that will always throw an exception.
+	 * @return An invalid cache loader.
+	 */
+	public static <TKey, TValue> CacheLoader<TKey, TValue> newInvalidCacheLoader() {
+		return new CacheLoader<TKey, TValue>() {
+			@Override
+			public TValue load(TKey key) throws Exception {
+				throw new IllegalStateException("Illegal use. Access the map directly instead.");
+			}
+		};
+	}
+	
 	/**
 	 * Initialize a new map.
 	 */
 	public BlockingHashMap() {
-		backingMap = new MapMaker().weakKeys().makeMap();
+		backingCache = CacheBuilder.newBuilder().weakValues().removalListener(
-		locks = new MapMaker().weakKeys().makeMap();
+		  new RemovalListener<TKey, TValue>() {
+			@Override
+			public void onRemoval(RemovalNotification<TKey, TValue> entry) {
+				// Clean up locks too
+				if (entry.getCause() != RemovalCause.REPLACED) {
+					locks.remove(entry.getKey());
+				}
+			}
+		}).build(
+				BlockingHashMap.<TKey, TValue>newInvalidCacheLoader()
+		);
+		backingMap = backingCache.asMap();
+		
+		// Normal concurrent hash map
+		locks = new ConcurrentHashMap<TKey, Object>();
 	}
 	
 	/**
@@ -94,34 +127,57 @@ public class BlockingHashMap<TKey, TValue> {
 	 * @throws InterruptedException If the current thread got interrupted while waiting.
 	 */
 	public TValue get(TKey key, long timeout, TimeUnit unit) throws InterruptedException {
+		return get(key, timeout, unit, false);
+	}
+	
+	/**
+	 * Waits until a value has been associated with the given key, and then retrieves that value.
+	 * <p>
+	 * If timeout is zero, this method will return immediately if it can't find an socket injector.
+	 * 
+	 * @param key - the key whose associated value is to be returned 
+	 * @param timeout - the amount of time to wait until an association has been made.
+	 * @param unit - unit of timeout.
+	 * @param ignoreInterrupted - TRUE if we should ignore the thread being interrupted, FALSE otherwise.
+	 * @return The value to which the specified key is mapped, or NULL if the timeout elapsed.
+	 * @throws InterruptedException If the current thread got interrupted while waiting.
+	 */
+	public TValue get(TKey key, long timeout, TimeUnit unit, boolean ignoreInterrupted) throws InterruptedException {
 		if (key == null)
 			throw new IllegalArgumentException("key cannot be NULL.");
 		if (unit == null)
 			throw new IllegalArgumentException("Unit cannot be NULL.");
+		if (timeout < 0)
+			throw new IllegalArgumentException("Timeout cannot be less than zero.");
 		
 		TValue value = backingMap.get(key);
 		
 		// Only lock if no value is available
-		if (value == null) {
+		if (value == null && timeout > 0) {
 			final Object lock = getLock(key);
 			final long stopTimeNS = System.nanoTime() + unit.toNanos(timeout);
 			
 			// Don't exceed the timeout
 			synchronized (lock) {
 				while (value == null) {
-					long remainingTime = stopTimeNS - System.nanoTime();
+					try {
+						long remainingTime = stopTimeNS - System.nanoTime();
 						
-					if (remainingTime > 0) {
+						if (remainingTime > 0) {
-						TimeUnit.NANOSECONDS.timedWait(lock, remainingTime);
+							TimeUnit.NANOSECONDS.timedWait(lock, remainingTime);
-						value = backingMap.get(key);
+							value = backingMap.get(key);
-					} else {
+						} else {
-						// Timeout elapsed
+							// Timeout elapsed
-						break;
+							break;
+						}
+					} catch (InterruptedException e) {
+						// This is fairly dangerous - but we might HAVE to block the thread
+						if (!ignoreInterrupted)
+							throw e;
 					}
 				}
 			}
 		}
-		
 		return value;
 	}
 	
@@ -148,6 +204,29 @@ public class BlockingHashMap<TKey, TValue> {
 		}
 	}
 	
+	/**
+	 * If and only if a key is not present in the map will it be associated with the given value.
+	 * @param key - the key to associate.
+	 * @param value - the value to associate.
+	 * @return The previous value this key has been associated with.
+	 */
+	public TValue putIfAbsent(TKey key, TValue value) {
+		if (value == null)
+			throw new IllegalArgumentException("This map doesn't support NULL values.");
+		
+		final TValue previous = backingMap.putIfAbsent(key, value);
+		
+		// No need to unlock readers if we haven't changed anything
+		if (previous == null) {
+			final Object lock = getLock(key);
+			
+			synchronized (lock) {
+				lock.notifyAll();
+			}
+		}
+		return previous;
+	}
+	
 	public int size() {
 		return backingMap.size();
 	}

ProtocolLib/src/main/java/com/comphenix/protocol/events/PacketContainer.java

@@ -96,6 +96,9 @@ public class PacketContainer implements Serializable {
 			andThen(new Function<BuilderParameters, Cloner>() {
 						@Override
 						public Cloner apply(@Nullable BuilderParameters param) {
+							if (param == null)
+								throw new IllegalArgumentException("Cannot be NULL.");
+							
 							return new FieldCloner(param.getAggregateCloner(), param.getInstanceProvider()) {{
 								// Use a default writer with no concept of cloning
 								writer = new ObjectWriter();

ProtocolLib/src/main/java/com/comphenix/protocol/injector/PacketFilterManager.java

@@ -56,6 +56,7 @@ import com.comphenix.protocol.injector.packet.PacketInjectorBuilder;
 import com.comphenix.protocol.injector.packet.PacketRegistry;
 import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
 import com.comphenix.protocol.injector.player.PlayerInjectorBuilder;
+import com.comphenix.protocol.injector.player.PlayerInjectionHandler.ConflictStrategy;
 import com.comphenix.protocol.injector.spigot.SpigotPacketInjector;
 import com.comphenix.protocol.reflect.FieldAccessException;
 import com.comphenix.protocol.reflect.FuzzyReflection;
@@ -133,8 +134,8 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 	private AsyncFilterManager asyncFilterManager;
 	
 	// Valid server and client packets
-	private Set<Integer> serverPackets;
+	private boolean knowsServerPackets;
-	private Set<Integer> clientPackets;
+	private boolean knowsClientPackets;
 	
 	// Ensure that we're not performing too may injections
 	private AtomicInteger phaseLoginCount = new AtomicInteger(0);
@@ -214,8 +215,8 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 			
 			// Attempt to load the list of server and client packets
 			try {
-				this.serverPackets = PacketRegistry.getServerPackets();
+				knowsServerPackets = PacketRegistry.getServerPackets() != null;
-				this.clientPackets = PacketRegistry.getClientPackets();
+				knowsClientPackets = PacketRegistry.getClientPackets() != null;
 			} catch (FieldAccessException e) {
 				reporter.reportWarning(this, "Cannot load server and client packet list.", e);
 			}
@@ -225,6 +226,13 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 		}
 	}
 	
+	/**
+	 * Initiate logic that is performed after the world has loaded.
+	 */
+	public void postWorldLoaded() {
+		playerInjection.postWorldLoaded();
+	}
+	
 	@Override
 	public AsynchronousManager getAsynchronousManager() {
 		return asyncFilterManager;
@@ -275,15 +283,15 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 				// Make sure this is possible
 				playerInjection.checkListener(listener);
 			}
+			if (hasSending)
+				incrementPhases(sending.getGamePhase());
+			
+			// Handle receivers after senders
 			if (hasReceiving) {
 				verifyWhitelist(listener, receiving);
 				recievedListeners.addListener(listener, receiving);
 				enablePacketFilters(listener, ConnectionSide.CLIENT_SIDE, receiving.getWhitelist());
 			}
-			
-			// Increment phases too
-			if (hasSending)
-				incrementPhases(sending.getGamePhase());
 			if (hasReceiving)
 				incrementPhases(receiving.getGamePhase());
 			
@@ -466,7 +474,8 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 		for (int packetID : packets) {
 			// Only register server packets that are actually supported by Minecraft
 			if (side.isForServer()) {
-				if (serverPackets != null && serverPackets.contains(packetID))
+				// Note that we may update the packet list here
+				if (!knowsServerPackets || PacketRegistry.getServerPackets().contains(packetID))
 					playerInjection.addPacketHandler(packetID);
 				else
 					reporter.reportWarning(this, String.format(
@@ -477,7 +486,7 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 			
 			// As above, only for client packets
 			if (side.isForClient() && packetInjector != null) {
-				if (clientPackets != null && clientPackets.contains(packetID))
+				if (!knowsClientPackets || PacketRegistry.getClientPackets().contains(packetID))
 					packetInjector.addPacketHandler(packetID);
 				else
 					reporter.reportWarning(this, String.format(
@@ -612,7 +621,7 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 	 */
 	public void initializePlayers(Player[] players) {
 		for (Player player : players)
-			playerInjection.injectPlayer(player);
+			playerInjection.injectPlayer(player, ConflictStrategy.OVERRIDE);
 	}
 	
 	/**
@@ -672,7 +681,7 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
     private void onPlayerJoin(PlayerJoinEvent event) {
 		try {
 			// This call will be ignored if no listeners are registered
-			playerInjection.injectPlayer(event.getPlayer());
+			playerInjection.injectPlayer(event.getPlayer(), ConflictStrategy.OVERRIDE);
 		} catch (Exception e) {
 			reporter.reportDetailed(PacketFilterManager.this, "Unable to inject player.", e, event);
 		}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/packet/PacketRegistry.java

@@ -47,8 +47,12 @@ public class PacketRegistry {
 	private static Map<Class, Integer> packetToID;
 	
 	// Whether or not certain packets are sent by the client or the server
-	private static Set<Integer> serverPackets;
+	private static ImmutableSet<Integer> serverPackets;
-	private static Set<Integer> clientPackets;
+	private static ImmutableSet<Integer> clientPackets;
+	
+	// The underlying sets
+	private static Set<Integer> serverPacketsRef;
+	private static Set<Integer> clientPacketsRef;
 	
 	// New proxy values
 	private static Map<Integer, Class> overwrittenPackets = new HashMap<Integer, Class>();
@@ -120,21 +124,21 @@ public class PacketRegistry {
 	
 	@SuppressWarnings("unchecked")
 	private static void initializeSets() throws FieldAccessException {
-		if (serverPackets == null || clientPackets == null) {
+		if (serverPacketsRef == null || clientPacketsRef == null) {
 			List<Field> sets = getPacketRegistry().getFieldListByType(Set.class);
 			
 			try {
 				if (sets.size() > 1) {
-					serverPackets = (Set<Integer>) FieldUtils.readStaticField(sets.get(0), true);
+					serverPacketsRef = (Set<Integer>) FieldUtils.readStaticField(sets.get(0), true);
-					clientPackets = (Set<Integer>) FieldUtils.readStaticField(sets.get(1), true);
+					clientPacketsRef = (Set<Integer>) FieldUtils.readStaticField(sets.get(1), true);
 					
 					// Impossible
-					if (serverPackets == null || clientPackets == null)
+					if (serverPacketsRef == null || clientPacketsRef == null)
 						throw new FieldAccessException("Packet sets are in an illegal state.");
 					
 					// NEVER allow callers to modify the underlying sets
-					serverPackets = ImmutableSet.copyOf(serverPackets);
+					serverPackets = ImmutableSet.copyOf(serverPacketsRef);
-					clientPackets = ImmutableSet.copyOf(clientPackets);
+					clientPackets = ImmutableSet.copyOf(clientPacketsRef);
 					
 				} else {
 					throw new FieldAccessException("Cannot retrieve packet client/server sets.");
@@ -143,6 +147,13 @@ public class PacketRegistry {
 			} catch (IllegalAccessException e) {
 				throw new FieldAccessException("Cannot access field.", e);
 			}
+			
+		} else {
+			// Copy over again if it has changed
+			if (serverPacketsRef != null && serverPacketsRef.size() != serverPackets.size())
+				serverPackets = ImmutableSet.copyOf(serverPacketsRef);
+			if (clientPacketsRef != null && clientPacketsRef.size() != clientPackets.size())
+				clientPackets = ImmutableSet.copyOf(clientPacketsRef);
 		}
 	}
 	

ProtocolLib/src/main/java/com/comphenix/protocol/injector/packet/ProxyPacketInjector.java

@@ -23,13 +23,15 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.Map;
 import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-
 import org.bukkit.entity.Player;
 
 import net.sf.cglib.proxy.Callback;
 import net.sf.cglib.proxy.Enhancer;
+import net.sf.cglib.proxy.Factory;
+import net.sf.cglib.proxy.CallbackFilter;
+import net.sf.cglib.proxy.NoOp;
 
+import com.comphenix.protocol.Packets;
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
@@ -37,6 +39,8 @@ import com.comphenix.protocol.injector.ListenerInvoker;
 import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
 import com.comphenix.protocol.reflect.FieldUtils;
 import com.comphenix.protocol.reflect.FuzzyReflection;
+import com.comphenix.protocol.reflect.MethodInfo;
+import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
 import com.comphenix.protocol.utility.MinecraftReflection;
 
 /**
@@ -45,6 +49,14 @@ import com.comphenix.protocol.utility.MinecraftReflection;
  * @author Kristian
  */
 class ProxyPacketInjector implements PacketInjector {
+	/**
+	 * Matches the readPacketData(DataInputStream) method in Packet.
+	 */
+	private static FuzzyMethodContract readPacket = FuzzyMethodContract.newBuilder().
+			returnTypeVoid().
+			parameterExactType(DataInputStream.class).
+			parameterCount(1).
+			build();
 	
 	// The "put" method that associates a packet ID with a packet class
 	private static Method putMethod;
@@ -59,12 +71,12 @@ class ProxyPacketInjector implements PacketInjector {
 	// Allows us to determine the sender
 	private PlayerInjectionHandler playerInjection;
 	
-	// Allows us to look up read packet injectors
-	private Map<Integer, ReadPacketModifier> readModifier;
-	
 	// Class loader
 	private ClassLoader classLoader;
 	
+	// Share callback filter
+	private CallbackFilter filter;
+			
 	public ProxyPacketInjector(ClassLoader classLoader, ListenerInvoker manager, 
 						  PlayerInjectionHandler playerInjection, ErrorReporter reporter) throws IllegalAccessException {
 		
@@ -72,7 +84,6 @@ class ProxyPacketInjector implements PacketInjector {
 		this.manager = manager;
 		this.playerInjection = playerInjection;
 		this.reporter = reporter;
-		this.readModifier = new ConcurrentHashMap<Integer, ReadPacketModifier>();
 		initialize();
 	}
 	
@@ -83,11 +94,9 @@ class ProxyPacketInjector implements PacketInjector {
 	 */
 	@Override
 	public void undoCancel(Integer id, Object packet) {
-		ReadPacketModifier modifier = readModifier.get(id);
-		
 		// See if this packet has been cancelled before
-		if (modifier != null && modifier.hasCancelled(packet)) {
+		if (ReadPacketModifier.hasCancelled(packet)) {
-			modifier.removeOverride(packet);
+			ReadPacketModifier.removeOverride(packet);
 		}
 	}
 	
@@ -131,22 +140,38 @@ class ProxyPacketInjector implements PacketInjector {
 			throw new IllegalStateException("Packet ID " + packetID + " is not a valid packet ID in this version.");
 		}
 		// Check for previous injections
-		if (!MinecraftReflection.isMinecraftClass(old)) {
+		if (Factory.class.isAssignableFrom(old)) {
 			throw new IllegalStateException("Packet " + packetID + " has already been injected.");
 		}
 		
+		if (filter == null) {
+			filter = new CallbackFilter() {
+				@Override
+				public int accept(Method method) {
+					// Skip methods defined in Object
+					if (method.getDeclaringClass().equals(Object.class))
+						return 0;
+					else if (readPacket.isMatch(MethodInfo.fromMethod(method), null))
+						return 1;
+					else
+						return 2;
+				}
+			};
+		}
+		
 		// Subclass the specific packet class
 		ex.setSuperclass(old);
-		ex.setCallbackType(ReadPacketModifier.class);
+		ex.setCallbackFilter(filter);
+		ex.setCallbackTypes(new Class<?>[] { NoOp.class, ReadPacketModifier.class, ReadPacketModifier.class });
 		ex.setClassLoader(classLoader);
 		Class proxy = ex.createClass();
 		
-		// Create the proxy handler
+		// Create the proxy handlers
-		ReadPacketModifier modifier = new ReadPacketModifier(packetID, this, reporter);
+		ReadPacketModifier modifierReadPacket = new ReadPacketModifier(packetID, this, reporter, true);
-		readModifier.put(packetID, modifier);
+		ReadPacketModifier modifierRest = new ReadPacketModifier(packetID, this, reporter, false);
 
 		// Add a static reference
-		Enhancer.registerStaticCallbacks(proxy, new Callback[] { modifier });
+		Enhancer.registerStaticCallbacks(proxy, new Callback[] { NoOp.INSTANCE, modifierReadPacket, modifierRest });
 		
 		try {
 			// Override values
@@ -182,7 +207,6 @@ class ProxyPacketInjector implements PacketInjector {
 			
 			putMethod.invoke(intHashMap, packetID, old);
 			previous.remove(packetID);
-			readModifier.remove(packetID);
 			registry.remove(proxy);
 			overwritten.remove(packetID);
 			return true;
@@ -213,10 +237,14 @@ class ProxyPacketInjector implements PacketInjector {
 			Player client = playerInjection.getPlayerByConnection(input);
 
 			// Never invoke a event if we don't know where it's from
-			if (client != null)
+			if (client != null) {
 				return packetRecieved(packet, client);
-			else
+			} else {
+				// Hack #2 - Caused by our server socket injector
+				if (packet.getID() != Packets.Client.GET_INFO)
+					System.out.println("[ProtocolLib] Unknown origin " + input + " for packet " + packet.getID());
 				return null;
+			}
 			
 		} catch (InterruptedException e) {
 			// We will ignore this - it occurs when a player disconnects
@@ -253,12 +281,4 @@ class ProxyPacketInjector implements PacketInjector {
 		overwritten.clear();
 		previous.clear();
 	}
-
-	/**
-	 * Inform the current PlayerInjector that it should update the DataInputStream next.
-	 * @param player - the player to update.
-	 */
-	public void scheduleDataInputRefresh(Player player) {
-		playerInjection.scheduleDataInputRefresh(player);
-	}
 }

ProtocolLib/src/main/java/com/comphenix/protocol/injector/packet/ReadPacketModifier.java

@@ -19,24 +19,17 @@ package com.comphenix.protocol.injector.packet;
 
 import java.io.DataInputStream;
 import java.lang.reflect.Method;
-import java.util.Arrays;
-import java.util.Collections;
 import java.util.Map;
-import java.util.WeakHashMap;
 
-import com.comphenix.protocol.Packets;
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
+import com.google.common.collect.MapMaker;
 
 import net.sf.cglib.proxy.MethodInterceptor;
 import net.sf.cglib.proxy.MethodProxy;
 
 class ReadPacketModifier implements MethodInterceptor {
-
-	@SuppressWarnings("rawtypes")
-	private static Class[] parameters = { DataInputStream.class };
-
 	// A cancel marker
 	private static final Object CANCEL_MARKER = new Object();
 	
@@ -47,20 +40,24 @@ class ReadPacketModifier implements MethodInterceptor {
 	// Report errors
 	private ErrorReporter reporter;
 	
-	// Whether or not a packet has been cancelled
+	// If this is a read packet data method
-	private static Map<Object, Object> override = Collections.synchronizedMap(new WeakHashMap<Object, Object>());
+	private boolean isReadPacketDataMethod;
 	
-	public ReadPacketModifier(int packetID, ProxyPacketInjector packetInjector, ErrorReporter reporter) {
+	// Whether or not a packet has been cancelled
+	private static Map<Object, Object> override = new MapMaker().weakKeys().makeMap();
+	
+	public ReadPacketModifier(int packetID, ProxyPacketInjector packetInjector, ErrorReporter reporter, boolean isReadPacketDataMethod) {
 		this.packetID = packetID;
 		this.packetInjector = packetInjector;
 		this.reporter = reporter;
+		this.isReadPacketDataMethod = isReadPacketDataMethod;
 	}
 	
 	/**
 	 * Remove any packet overrides.
 	 * @param packet - the packet to rever
 	 */
-	public void removeOverride(Object packet) {
+	public static void removeOverride(Object packet) {
 		override.remove(packet);
 	}
 	
@@ -69,7 +66,7 @@ class ReadPacketModifier implements MethodInterceptor {
 	 * @param packet - the given packet.
 	 * @return Overriden object.
 	 */
-	public Object getOverride(Object packet) {
+	public static Object getOverride(Object packet) {
 		return override.get(packet);
 	}
 
@@ -78,23 +75,15 @@ class ReadPacketModifier implements MethodInterceptor {
 	 * @param packet - the packet to check.
 	 * @return TRUE if it has been cancelled, FALSE otherwise.
 	 */
-	public boolean hasCancelled(Object packet) {
+	public static boolean hasCancelled(Object packet) {
 		return getOverride(packet) == CANCEL_MARKER;
 	}
 
 	@Override
 	public Object intercept(Object thisObj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
-		
-		Object returnValue = null;
-		String methodName = method.getName();
-
-		// We always pass these down (otherwise, we'll end up with a infinite loop)
-		if (methodName.equals("hashCode") || methodName.equals("equals") || methodName.equals("toString")) {
-			return proxy.invokeSuper(thisObj, args);
-		}
-		
 		// Atomic retrieval
 		Object overridenObject = override.get(thisObj);
+		Object returnValue = null;
 		
 		if (overridenObject != null) {
 			// This packet has been cancelled
@@ -112,9 +101,7 @@ class ReadPacketModifier implements MethodInterceptor {
 		}
 		
 		// Is this a readPacketData method?
-		if (returnValue == null && 
+		if (isReadPacketDataMethod) {
-				Arrays.equals(method.getParameterTypes(), parameters)) {
-			
 			try {
 				// We need this in order to get the correct player
 				DataInputStream input = (DataInputStream) args[0];
@@ -132,18 +119,12 @@ class ReadPacketModifier implements MethodInterceptor {
 					} else if (!objectEquals(thisObj, result)) {
 						override.put(thisObj, result);
 					}
-					
-					// Update DataInputStream next time
-					if (!event.isCancelled() && packetID == Packets.Server.KEY_RESPONSE) {
-						packetInjector.scheduleDataInputRefresh(event.getPlayer());
-					}
 				}
 			} catch (Throwable e) {
 				// Minecraft cannot handle this error
-				reporter.reportDetailed(this, "Cannot handle clienet packet.", e, args[0]);
+				reporter.reportDetailed(this, "Cannot handle client packet.", e, args[0]);
 			}
 		}
-		
 		return returnValue;
 	}
 	

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/InjectedServerConnection.java

@@ -27,6 +27,7 @@ import net.sf.cglib.proxy.Factory;
 import org.bukkit.Server;
 
 import com.comphenix.protocol.error.ErrorReporter;
+import com.comphenix.protocol.injector.server.AbstractInputStreamLookup;
 import com.comphenix.protocol.reflect.FieldUtils;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.reflect.ObjectWriter;
@@ -53,6 +54,9 @@ class InjectedServerConnection {
 	// Used to inject net handlers
 	private NetLoginInjector netLoginInjector;
 	
+	// Inject server connections
+	private AbstractInputStreamLookup socketInjector; 
+	
 	private Server server;
 	private ErrorReporter reporter;
 	private boolean hasAttempted;
@@ -60,11 +64,12 @@ class InjectedServerConnection {
 	
 	private Object minecraftServer = null;
 	
-	public InjectedServerConnection(ErrorReporter reporter, Server server, NetLoginInjector netLoginInjector) {
+	public InjectedServerConnection(ErrorReporter reporter, AbstractInputStreamLookup socketInjector, Server server, NetLoginInjector netLoginInjector) {
 		this.listFields = new ArrayList<VolatileField>();
 		this.replacedLists = new ArrayList<ReplacedArrayList<Object>>();
 		this.reporter = reporter;
 		this.server = server;
+		this.socketInjector = socketInjector;
 		this.netLoginInjector = netLoginInjector;
 	}
 
@@ -126,6 +131,9 @@ class InjectedServerConnection {
 			return;
 		}
 		
+		// Inject the server socket too
+		injectServerSocket(listenerThread);
+		
 		// Just inject every list field we can get
 		injectEveryListField(listenerThread, 1);
 		hasSuccess = true;
@@ -147,7 +155,8 @@ class InjectedServerConnection {
 			listField = FuzzyReflection.fromClass(serverConnectionMethod.getReturnType(), true).
 							getFieldByType("netServerHandlerList", List.class);
 		if (dedicatedThreadField == null) {
-			List<Field> matches = FuzzyReflection.fromObject(serverConnection, true).getFieldListByType(Thread.class);
+			List<Field> matches = FuzzyReflection.fromObject(serverConnection, true).
+								   getFieldListByType(Thread.class);
 		
 			// Verify the field count
 			if (matches.size() != 1) 
@@ -158,8 +167,13 @@ class InjectedServerConnection {
 		
 		// Next, try to get the dedicated thread
 		try {
-			if (dedicatedThreadField != null)
+			if (dedicatedThreadField != null) {
-				injectEveryListField(FieldUtils.readField(dedicatedThreadField, serverConnection, true), 1);
+				Object dedicatedThread = FieldUtils.readField(dedicatedThreadField, serverConnection, true);
+				
+				// Inject server socket and NetServerHandlers.
+				injectServerSocket(dedicatedThread);
+				injectEveryListField(dedicatedThread, 1);
+			}
 		} catch (IllegalAccessException e) {
 			reporter.reportWarning(this, "Unable to retrieve net handler thread.", e);
 		}
@@ -168,6 +182,10 @@ class InjectedServerConnection {
 		hasSuccess = true;
 	}
 	
+	private void injectServerSocket(Object container) {
+		socketInjector.inject(container);
+	}
+
 	/**
 	 * Automatically inject into every List-compatible public or private field of the given object.
 	 * @param container - container object with the fields to inject.

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/NetLoginInjector.java

@@ -24,7 +24,8 @@ import org.bukkit.entity.Player;
 
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.injector.GamePhase;
-import com.comphenix.protocol.injector.player.TemporaryPlayerFactory.InjectContainer;
+import com.comphenix.protocol.injector.player.PlayerInjectionHandler.ConflictStrategy;
+import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
 import com.comphenix.protocol.utility.MinecraftReflection;
 import com.google.common.collect.Maps;
 
@@ -34,23 +35,22 @@ import com.google.common.collect.Maps;
  * @author Kristian
  */
 class NetLoginInjector {
-
 	private ConcurrentMap<Object, PlayerInjector> injectedLogins = Maps.newConcurrentMap();
 
 	// Handles every hook
 	private ProxyPlayerInjectionHandler injectionHandler;
+
+	// Create temporary players
+	private TemporaryPlayerFactory playerFactory = new TemporaryPlayerFactory();
+	
+	// The current error reporter
+	private ErrorReporter reporter;
 	private Server server;
 	
-	// The current error rerporter
+	public NetLoginInjector(ErrorReporter reporter, Server server, ProxyPlayerInjectionHandler injectionHandler) {
-	private ErrorReporter reporter;
-	
-	// Used to create fake players
-	private TemporaryPlayerFactory tempPlayerFactory = new TemporaryPlayerFactory();
-	
-	public NetLoginInjector(ErrorReporter reporter, ProxyPlayerInjectionHandler injectionHandler, Server server) {
 		this.reporter = reporter;
-		this.injectionHandler = injectionHandler;
 		this.server = server;
+		this.injectionHandler = injectionHandler;
 	}
 
 	/**
@@ -64,16 +64,19 @@ class NetLoginInjector {
 			if (!injectionHandler.isInjectionNecessary(GamePhase.LOGIN))
 				return inserting;
 			
-			Player fakePlayer = tempPlayerFactory.createTemporaryPlayer(server);
+			Player temporary = playerFactory.createTemporaryPlayer(server);
-			PlayerInjector injector = injectionHandler.injectPlayer(fakePlayer, inserting, GamePhase.LOGIN);
+			// Note that we bail out if there's an existing player injector
-			injector.updateOnLogin = true;
+			PlayerInjector injector = injectionHandler.injectPlayer(
+					temporary, inserting, ConflictStrategy.BAIL_OUT, GamePhase.LOGIN);
 			
-			// Associate the injector too
+			if (injector != null) {
-			InjectContainer container = (InjectContainer) fakePlayer;
+				// Update injector as well
-			container.setInjector(injector);
+				TemporaryPlayerFactory.setInjectorInPlayer(temporary, injector);
+				injector.updateOnLogin = true;
 	
-			// Save the login
+				// Save the login
-			injectedLogins.putIfAbsent(inserting, injector);
+				injectedLogins.putIfAbsent(inserting, injector);
+			}
 			
 			// NetServerInjector can never work (currently), so we don't need to replace the NetLoginHandler
 			return inserting;	
@@ -81,7 +84,7 @@ class NetLoginInjector {
 		} catch (Throwable e) {
 			// Minecraft can't handle this, so we'll deal with it here
 			reporter.reportDetailed(this, "Unable to hook " + 
-						MinecraftReflection.getNetLoginHandlerName() + ".", e, inserting);
+						MinecraftReflection.getNetLoginHandlerName() + ".", e, inserting, injectionHandler);
 			return inserting;
 		}
 	}
@@ -108,15 +111,13 @@ class NetLoginInjector {
 				
 				// Hack to clean up other references
 				newInjector = injectionHandler.getInjectorByNetworkHandler(injected.getNetworkManager());
+				injectionHandler.uninjectPlayer(player);
 				
 				// Update NetworkManager
-				if (newInjector == null) {
+				if (newInjector != null) {
-					injectionHandler.uninjectPlayer(player);
+					if (injected instanceof NetworkObjectInjector) {
-				} else {
-					injectionHandler.uninjectPlayer(player, false);
-					
-					if (injected instanceof NetworkObjectInjector)
 						newInjector.setNetworkManager(injected.getNetworkManager(), true);
+					}
 				}
 				
 			} catch (Throwable e) {

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/NetworkObjectInjector.java

@@ -39,7 +39,7 @@ import com.comphenix.protocol.events.PacketListener;
 import com.comphenix.protocol.injector.GamePhase;
 import com.comphenix.protocol.injector.ListenerInvoker;
 import com.comphenix.protocol.injector.PacketFilterManager.PlayerInjectHooks;
-import com.comphenix.protocol.injector.player.TemporaryPlayerFactory.InjectContainer;
+import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
 
 /**
  * Injection method that overrides the NetworkHandler itself, and its queue-method.
@@ -54,7 +54,7 @@ public class NetworkObjectInjector extends PlayerInjector {
 	private ClassLoader classLoader;
 
 	// Shared callback filter - avoid creating a new class every time
-	private static CallbackFilter callbackFilter;
+	private volatile static CallbackFilter callbackFilter;
 	
 	// Temporary player factory
 	private static volatile TemporaryPlayerFactory tempPlayerFactory;
@@ -91,10 +91,8 @@ public class NetworkObjectInjector extends PlayerInjector {
 		if (tempPlayerFactory == null)
 			tempPlayerFactory = new TemporaryPlayerFactory();
 		
-		// Create and associate this fake player with this network injector
+		// Create and associate the fake player with this network injector
-		Player player = tempPlayerFactory.createTemporaryPlayer(server);
+		return tempPlayerFactory.createTemporaryPlayer(server, this);
-		((InjectContainer) player).setInjector(this);
-		return player;
 	}
 	
 	@Override

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/NetworkServerInjector.java

@@ -20,15 +20,7 @@ package com.comphenix.protocol.injector.player;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
-import java.util.List;
+import net.sf.cglib.proxy.*;
-import java.util.Map;
-import net.sf.cglib.proxy.Callback;
-import net.sf.cglib.proxy.CallbackFilter;
-import net.sf.cglib.proxy.Enhancer;
-import net.sf.cglib.proxy.Factory;
-import net.sf.cglib.proxy.MethodInterceptor;
-import net.sf.cglib.proxy.MethodProxy;
-import net.sf.cglib.proxy.NoOp;
 
 import org.bukkit.entity.Player;
 
@@ -44,8 +36,8 @@ import com.comphenix.protocol.reflect.ObjectWriter;
 import com.comphenix.protocol.reflect.VolatileField;
 import com.comphenix.protocol.reflect.instances.DefaultInstances;
 import com.comphenix.protocol.reflect.instances.ExistingGenerator;
+import com.comphenix.protocol.utility.MinecraftMethods;
 import com.comphenix.protocol.utility.MinecraftReflection;
-import com.google.common.collect.Maps;
 
 /**
  * Represents a player hook into the NetServerHandler class. 
@@ -57,7 +49,6 @@ class NetworkServerInjector extends PlayerInjector {
 	private volatile static CallbackFilter callbackFilter;
 	
 	private volatile static Field disconnectField;
-	private volatile static Method sendPacketMethod;
 	private InjectedServerConnection serverInjection;
 	
 	// Determine if we're listening
@@ -88,67 +79,6 @@ class NetworkServerInjector extends PlayerInjector {
 		return sendingFilters.contains(packetID);
 	}
 
-	@Override
-	public void initialize(Object injectionSource) throws IllegalAccessException {
-		super.initialize(injectionSource);
-
-		// Get the send packet method!
-		if (hasInitialized) {
-			if (sendPacketMethod == null) {
-				try {
-					sendPacketMethod = FuzzyReflection.fromObject(serverHandler).getMethodByName("sendPacket.*");
-				} catch (IllegalArgumentException e) {
-					Map<String, Method> netServer = getMethodList(
-							MinecraftReflection.getNetServerHandlerClass(), MinecraftReflection.getPacketClass());
-					Map<String, Method> netHandler = getMethodList(
-							MinecraftReflection.getNetHandlerClass(), MinecraftReflection.getPacketClass());
-					
-					// Remove every method in net handler from net server
-					for (String methodName : netHandler.keySet()) {
-						netServer.remove(methodName);
-					}
-					
-					// The remainder is the send packet method
-					if (netServer.size() ==  1) {
-						Method[] methods = netServer.values().toArray(new Method[0]);
-						sendPacketMethod = methods[0];
-					} else {
-						throw new IllegalArgumentException("Unable to find the sendPacket method in NetServerHandler/PlayerConnection.");
-					}
-				}
-			}
-		}
-	}
-	
-	/**
-	 * Retrieve a method mapped list of every method with the given signature.
-	 * @param source - class source.
-	 * @param params - parameters.
-	 * @return Method mapped list.
-	 */
-	private Map<String, Method> getMethodList(Class<?> source, Class<?>... params) {
-		return getMappedMethods(
-					FuzzyReflection.fromClass(source, true).
-					getMethodListByParameters(Void.TYPE, params)
-			   );
-	}
-	
-	/**
-	 * Retrieve every method as a map over names. 
-	 * <p>
-	 * Note that overloaded methods will only occur once in the resulting map.
-	 * @param methods - every method.
-	 * @return A map over every given method.
-	 */
-	private Map<String, Method> getMappedMethods(List<Method> methods) {
-		Map<String, Method> map = Maps.newHashMap();
-		
-		for (Method method : methods) {
-			map.put(method.getName(), method);
-		}
-		return map;
-	}
-
 	@Override
 	public void sendServerPacket(Object packet, boolean filtered) throws InvocationTargetException {
 		Object serverDelegate = filtered ? serverHandlerRef.getValue() : serverHandlerRef.getOldValue();
@@ -156,7 +86,7 @@ class NetworkServerInjector extends PlayerInjector {
 		if (serverDelegate != null) {
 			try {
 				// Note that invocation target exception is a wrapper for a checked exception
-				sendPacketMethod.invoke(serverDelegate, packet);
+				MinecraftMethods.getSendPacketMethod().invoke(serverDelegate, packet);
 				
 			} catch (IllegalArgumentException e) {
 				throw e;
@@ -180,6 +110,7 @@ class NetworkServerInjector extends PlayerInjector {
 			return;
 		
 		if (!tryInjectManager()) {
+			Class<?> serverHandlerClass = MinecraftReflection.getNetServerHandlerClass();
 			
 			// Try to override the proxied object
 			if (proxyServerField != null) {
@@ -188,6 +119,8 @@ class NetworkServerInjector extends PlayerInjector {
 				
 				if (serverHandler == null)
 					throw new RuntimeException("Cannot hook player: Inner proxy object is NULL.");
+				else
+					serverHandlerClass = serverHandler.getClass();
 				
 				// Try again
 				if (tryInjectManager()) {
@@ -198,7 +131,7 @@ class NetworkServerInjector extends PlayerInjector {
 			
 			throw new RuntimeException(
 					"Cannot hook player: Unable to find a valid constructor for the " 
-						+ MinecraftReflection.getNetServerHandlerClass().getName() + " object.");
+						+ serverHandlerClass.getName() + " object.");
 		}
 	}
 	
@@ -230,10 +163,12 @@ class NetworkServerInjector extends PlayerInjector {
 		// Share callback filter - that way, we avoid generating a new class for 
 		// every logged in player.
 		if (callbackFilter == null) {
+			final Method sendPacket = MinecraftMethods.getSendPacketMethod();
+			
 			callbackFilter = new CallbackFilter() {
 				@Override
 				public int accept(Method method) {
-					if (method.equals(sendPacketMethod))
+					if (method.equals(sendPacket))
 						return 0;
 					else
 						return 1;

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/PlayerInjectionHandler.java

@@ -4,8 +4,6 @@ import java.io.DataInputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.net.InetSocketAddress;
 import java.util.Set;
-import java.util.concurrent.TimeUnit;
-
 import org.bukkit.entity.Player;
 
 import com.comphenix.protocol.events.PacketContainer;
@@ -14,6 +12,23 @@ import com.comphenix.protocol.injector.GamePhase;
 import com.comphenix.protocol.injector.PacketFilterManager.PlayerInjectHooks;
 
 public interface PlayerInjectionHandler {
+	/**
+	 * How to handle a previously existing player injection.
+	 * 
+	 * @author Kristian
+	 */
+	public enum ConflictStrategy {
+		/**
+		 * Override it.
+		 */
+		OVERRIDE,
+		
+		/**
+		 * Immediately exit.
+		 */
+		BAIL_OUT;
+	}
+	
 	/**
 	 * Retrieves how the server packets are read.
 	 * @return Injection method for reading server packets.
@@ -61,23 +76,14 @@ public interface PlayerInjectionHandler {
 	public abstract Player getPlayerByConnection(DataInputStream inputStream)
 			throws InterruptedException;
 
-	/**
-	 * Retrieve a player by its DataInput connection.
-	 * @param inputStream - the associated DataInput connection.
-	 * @param playerTimeout - the amount of time to wait for a result.
-	 * @param unit - unit of playerTimeout.
-	 * @return The player. 
-	 * @throws InterruptedException If the thread was interrupted during the wait.
-	 */
-	public abstract Player getPlayerByConnection(DataInputStream inputStream, long playerTimeout, TimeUnit unit) throws InterruptedException;
-
 	/**
 	 * Initialize a player hook, allowing us to read server packets.
 	 * <p>
 	 * This call will  be ignored if there's no listener that can receive the given events.
 	 * @param player - player to hook.
+	 * @param strategy - how to handle injection conflicts.
 	 */
-	public abstract void injectPlayer(Player player);
+	public abstract void injectPlayer(Player player, ConflictStrategy strategy);
 
 	/**
 	 * Invoke special routines for handling disconnect before a player is uninjected.
@@ -149,8 +155,7 @@ public interface PlayerInjectionHandler {
 	public abstract void close();
 
 	/**
-	 * Inform the current PlayerInjector that it should update the DataInputStream next.
+	 * Perform any action that must be delayed until the world(s) has loaded.
-	 * @param player - the player to update.
 	 */
-	public abstract void scheduleDataInputRefresh(Player player);
+	public abstract void postWorldLoaded();
 }

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/PlayerInjector.java

@@ -24,7 +24,6 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.net.Socket;
 import java.net.SocketAddress;
-
 import net.sf.cglib.proxy.Factory;
 
 import org.bukkit.entity.Player;
@@ -38,13 +37,14 @@ import com.comphenix.protocol.injector.BukkitUnwrapper;
 import com.comphenix.protocol.injector.GamePhase;
 import com.comphenix.protocol.injector.ListenerInvoker;
 import com.comphenix.protocol.injector.PacketFilterManager.PlayerInjectHooks;
+import com.comphenix.protocol.injector.server.SocketInjector;
 import com.comphenix.protocol.reflect.FieldUtils;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.reflect.StructureModifier;
 import com.comphenix.protocol.reflect.VolatileField;
 import com.comphenix.protocol.utility.MinecraftReflection;
 
-abstract class PlayerInjector {
+abstract class PlayerInjector implements SocketInjector {
 
 	// Net login handler stuff
 	private static Field netLoginNetworkField;
@@ -60,6 +60,7 @@ abstract class PlayerInjector {
 	protected static Field networkManagerField;
 	protected static Field netHandlerField;
 	protected static Field socketField;
+	protected static Field socketAddressField;
 	
 	private static Field inputField;
 	private static Field entityPlayerField;
@@ -87,8 +88,9 @@ abstract class PlayerInjector {
 	protected Object serverHandler;
 	protected Object netHandler;
 	
-	// Current socket
+	// Current socket and address
 	protected Socket socket;
+	protected SocketAddress socketAddress;
 	
 	// The packet manager and filters
 	protected ListenerInvoker invoker;
@@ -99,9 +101,6 @@ abstract class PlayerInjector {
 	// Handle errors
 	protected ErrorReporter reporter;
 
-	// Scheduled action on the next packet event
-	protected Runnable scheduledAction;
-
 	// Whether or not the injector has been cleaned
 	private boolean clean;
 	
@@ -249,10 +248,12 @@ abstract class PlayerInjector {
 	 * @return The associated socket.
 	 * @throws IllegalAccessException If we're unable to read the socket field.
 	 */
+	@Override
 	public Socket getSocket() throws IllegalAccessException {
 		try {
 			if (socketField == null)
-				socketField = FuzzyReflection.fromObject(networkManager, true).getFieldListByType(Socket.class).get(0);
+				socketField = FuzzyReflection.fromObject(networkManager, true).
+								getFieldListByType(Socket.class).get(0);
 			if (socket == null)
 				socket = (Socket) FieldUtils.readField(socketField, networkManager, true);
 			return socket;
@@ -263,18 +264,23 @@ abstract class PlayerInjector {
 	}
 	
 	/**
-	 * Retrieve the associated address of this player.
+	 * Retrieve the associated remote address of a player.
-	 * @return The associated address.
+	 * @return The associated remote address..
-	 * @throws IllegalAccessException If we're unable to read the socket field.
+	 * @throws IllegalAccessException If we're unable to read the socket address field.
 	 */
+	@Override
 	public SocketAddress getAddress() throws IllegalAccessException {
-		Socket socket = getSocket();
+		try {
+			if (socketAddressField == null)
+				socketAddressField = FuzzyReflection.fromObject(networkManager, true).
+										getFieldListByType(SocketAddress.class).get(0);
+			if (socketAddress == null)
+				socketAddress = (SocketAddress) FieldUtils.readField(socketAddressField, networkManager, true);
+			return socketAddress;
 			
-		// Guard against NULL
+		} catch (IndexOutOfBoundsException e) {
-		if (socket != null)
+			throw new IllegalAccessException("Unable to read the socket address field.");
-			return socket.getRemoteSocketAddress();
+		}
-		else
-			return null;
 	}
 	
 	/**
@@ -282,6 +288,7 @@ abstract class PlayerInjector {
 	 * @param message - the message to display.
 	 * @throws InvocationTargetException If disconnection failed.
 	 */
+	@Override
 	public void disconnect(String message) throws InvocationTargetException {
 		// Get a non-null handler
 		boolean usingNetServer = serverHandler != null;
@@ -450,6 +457,7 @@ abstract class PlayerInjector {
 	 * @param filtered - whether or not the packet will be filtered by our listeners.
 	 * @param InvocationTargetException If an error occured when sending the packet.
 	 */
+	@Override
 	public abstract void sendServerPacket(Object packet, boolean filtered) throws InvocationTargetException;
 	
 	/**
@@ -517,12 +525,7 @@ abstract class PlayerInjector {
 			Integer id = invoker.getPacketID(packet);
 			Player currentPlayer = player;
 			
-			// Hack #1: Handle a single scheduled action
+			// Hack #1
-			if (scheduledAction != null) {
-				scheduledAction.run();
-				scheduledAction = null;
-			}
-			// Hack #2
 			if (updateOnLogin) {
 				if (id == Packets.Server.LOGIN) {
 					try {
@@ -593,17 +596,10 @@ abstract class PlayerInjector {
 		}
 	}
 	
-	/**
-	 * Schedule an action to occur on the next sent packet.
-	 * @param action - action to execute.
-	 */
-	public void scheduleAction(Runnable action) {
-		scheduledAction = action;
-	}
-
 	/**
 	 * Retrieve the hooked player.
 	 */
+	@Override
 	public Player getPlayer() {
 		return player;
 	}
@@ -630,6 +626,7 @@ abstract class PlayerInjector {
 	 * Retrieve the hooked player object OR the more up-to-date player instance.
 	 * @return The hooked player, or a more up-to-date instance.
 	 */
+	@Override
 	public Player getUpdatedPlayer() {
 		if (updatedPlayer != null)
 			return updatedPlayer;
@@ -637,6 +634,11 @@ abstract class PlayerInjector {
 			return player;
 	}
 	
+	@Override
+	public void transferState(SocketInjector delegate) {
+		// Do nothing
+	}
+	
 	/**
 	 * Set the real Bukkit player that we will use.
 	 * @param updatedPlayer - the real Bukkit player.

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/ProxyPlayerInjectionHandler.java

@@ -20,12 +20,13 @@ package com.comphenix.protocol.injector.player;
 import java.io.DataInputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.net.InetSocketAddress;
-import java.net.Socket;
 import java.net.SocketAddress;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
+import net.sf.cglib.proxy.Factory;
+
 import org.bukkit.Server;
 import org.bukkit.entity.Player;
 
@@ -40,8 +41,14 @@ import com.comphenix.protocol.injector.GamePhase;
 import com.comphenix.protocol.injector.ListenerInvoker;
 import com.comphenix.protocol.injector.PlayerLoggedOutException;
 import com.comphenix.protocol.injector.PacketFilterManager.PlayerInjectHooks;
-import com.comphenix.protocol.injector.player.TemporaryPlayerFactory.InjectContainer;
+import com.comphenix.protocol.injector.server.AbstractInputStreamLookup;
+import com.comphenix.protocol.injector.server.InputStreamLookupBuilder;
+import com.comphenix.protocol.injector.server.SocketInjector;
+import com.comphenix.protocol.utility.MinecraftReflection;
+
 import com.google.common.base.Predicate;
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
 import com.google.common.collect.Maps;
 
 /**
@@ -50,26 +57,26 @@ import com.google.common.collect.Maps;
  * @author Kristian
  */
 class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
-	/**
-	 * The maximum number of milliseconds to wait until a player can be looked up by connection.
-	 */
-	private static final long TIMEOUT_PLAYER_LOOKUP = 2000; // ms
-		
 	// Server connection injection
 	private InjectedServerConnection serverInjection;
 	
+	// Server socket injection
+	private AbstractInputStreamLookup inputStreamLookup;
+	
 	// NetLogin injector
 	private NetLoginInjector netLoginInjector;
 	
 	// The last successful player hook
 	private PlayerInjector lastSuccessfulHook;
 	
-	// Player injection
+	// Dummy injection
-	private Map<SocketAddress, PlayerInjector> addressLookup = Maps.newConcurrentMap();
+	private Cache<Player, PlayerInjector> dummyInjectors = 
-	private Map<Player, PlayerInjector> playerInjection = Maps.newConcurrentMap();
+			CacheBuilder.newBuilder().
+			expireAfterWrite(30, TimeUnit.SECONDS).
+			build(BlockingHashMap.<Player, PlayerInjector>newInvalidCacheLoader());
 	
-	// Lookup player by connection
+	// Player injection
-	private BlockingHashMap<DataInputStream, PlayerInjector> dataInputLookup = BlockingHashMap.create();
+	private Map<Player, PlayerInjector> playerInjection = Maps.newConcurrentMap();
 	
 	// Player injection types
 	private volatile PlayerInjectHooks loginPlayerHook = PlayerInjectHooks.NETWORK_SERVER_OBJECT;
@@ -96,19 +103,35 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	// Used to filter injection attempts
 	private Predicate<GamePhase> injectionFilter;
 	
-	public ProxyPlayerInjectionHandler(ClassLoader classLoader, ErrorReporter reporter, Predicate<GamePhase> injectionFilter, 
+	public ProxyPlayerInjectionHandler(
-								  ListenerInvoker invoker, Set<PacketListener> packetListeners, Server server) {
+			ClassLoader classLoader, ErrorReporter reporter, Predicate<GamePhase> injectionFilter, 
+			ListenerInvoker invoker, Set<PacketListener> packetListeners, Server server) {
 		
 		this.classLoader = classLoader;
 		this.reporter = reporter;
 		this.invoker = invoker;
 		this.injectionFilter = injectionFilter;
 		this.packetListeners = packetListeners;
-		this.netLoginInjector = new NetLoginInjector(reporter, this, server);
+	
-		this.serverInjection = new InjectedServerConnection(reporter, server, netLoginInjector);
+		this.inputStreamLookup = InputStreamLookupBuilder.newBuilder().
+							  server(server).
+							  reporter(reporter).
+							  build();
+		
+		// Create net login injectors and the server connection injector
+		this.netLoginInjector = new NetLoginInjector(reporter, server, this);
+		this.serverInjection = new InjectedServerConnection(reporter, inputStreamLookup, server, netLoginInjector);
 		serverInjection.injectList();
 	}
 	
+	@Override
+	public void postWorldLoaded() {
+		// This will actually create a socket and a seperate thread ...
+		if (inputStreamLookup != null) {
+			inputStreamLookup.postWorldLoaded();
+		}
+	}
+
 	/**
 	 * Retrieves how the server packets are read.
 	 * @return Injection method for reading server packets.
@@ -202,31 +225,16 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	/**
 	 * Retrieve a player by its DataInput connection.
 	 * @param inputStream - the associated DataInput connection.
-	 * @return The player.
+	 * @return The player we found.
-	 * @throws InterruptedException If the thread was interrupted during the wait.
 	 */
 	@Override
-	public Player getPlayerByConnection(DataInputStream inputStream) throws InterruptedException {
+	public Player getPlayerByConnection(DataInputStream inputStream) {
-		return getPlayerByConnection(inputStream, TIMEOUT_PLAYER_LOOKUP, TimeUnit.MILLISECONDS);
-	}
-	
-	/**
-	 * Retrieve a player by its DataInput connection.
-	 * @param inputStream - the associated DataInput connection.
-	 * @param playerTimeout - the amount of time to wait for a result.
-	 * @param unit - unit of playerTimeout.
-	 * @return The player. 
-	 * @throws InterruptedException If the thread was interrupted during the wait.
-	 */
-	@Override
-	public Player getPlayerByConnection(DataInputStream inputStream, long playerTimeout, TimeUnit unit) throws InterruptedException {
 		// Wait until the connection owner has been established
-		PlayerInjector injector = dataInputLookup.get(inputStream, playerTimeout, unit);
+		SocketInjector injector = inputStreamLookup.waitSocketInjector(inputStream);
 		
 		if (injector != null) {
 			return injector.getPlayer();
 		} else {
-			reporter.reportWarning(this, "Unable to find stream: " + inputStream);
 			return null;
 		}
 	}
@@ -245,12 +253,13 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	 * <p>
 	 * This call will  be ignored if there's no listener that can receive the given events.
 	 * @param player - player to hook.
+	 * @param strategy - how to handle previous player injections.
 	 */
 	@Override
-	public void injectPlayer(Player player) {
+	public void injectPlayer(Player player, ConflictStrategy strategy) {
 		// Inject using the player instance itself
 		if (isInjectionNecessary(GamePhase.PLAYING)) {
-			injectPlayer(player, player, GamePhase.PLAYING);
+			injectPlayer(player, player, strategy, GamePhase.PLAYING);
 		}
 	}
 	
@@ -273,16 +282,22 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	 * @param phase - the current game phase.
 	 * @return The resulting player injector, or NULL if the injection failed.
 	 */
-	PlayerInjector injectPlayer(Player player, Object injectionPoint, GamePhase phase) {
+	PlayerInjector injectPlayer(Player player, Object injectionPoint, ConflictStrategy stategy, GamePhase phase) {
+		if (player == null)
+			throw new IllegalArgumentException("Player cannot be NULL.");
+		if (injectionPoint == null)
+			throw new IllegalArgumentException("injectionPoint cannot be NULL.");
+		if (phase == null)
+			throw new IllegalArgumentException("phase cannot be NULL.");
+		
 		// Unfortunately, due to NetLoginHandler, multiple threads may potentially call this method.
 		synchronized (player) {
-			return injectPlayerInternal(player, injectionPoint, phase);
+			return injectPlayerInternal(player, injectionPoint, stategy, phase);
 		}
 	}
 	
 	// Unsafe variant of the above
-	private PlayerInjector injectPlayerInternal(Player player, Object injectionPoint, GamePhase phase) {
+	private PlayerInjector injectPlayerInternal(Player player, Object injectionPoint, ConflictStrategy stategy, GamePhase phase) {
-		
 		PlayerInjector injector = playerInjection.get(player);
 		PlayerInjectHooks tempHook = getPlayerHook(phase);
 		PlayerInjectHooks permanentHook = tempHook;
@@ -293,7 +308,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 		boolean invalidInjector = injector != null ? !injector.canInject(phase) : true;
 
 		// Don't inject if the class has closed
-		if (!hasClosed && player != null && (tempHook != getInjectorType(injector) || invalidInjector)) {
+		if (!hasClosed && (tempHook != getInjectorType(injector) || invalidInjector)) {
 			while (tempHook != PlayerInjectHooks.NONE) {
 				// Whether or not the current hook method failed completely
 				boolean hookFailed = false;
@@ -308,25 +323,24 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 					if (injector.canInject(phase)) {
 						injector.initialize(injectionPoint);
 						
-						DataInputStream inputStream = injector.getInputStream(false);
+						// Get socket and socket injector
-
+						SocketAddress address = injector.getAddress();
-						Socket socket = injector.getSocket();
+						SocketInjector previous = inputStreamLookup.peekSocketInjector(address);
-						SocketAddress address = socket != null ? socket.getRemoteSocketAddress() : null;
-						
-						// Guard against NPE here too
-						PlayerInjector previous = address != null ? addressLookup.get(address) : null;
 
 						// Close any previously associated hooks before we proceed
-						if (previous != null) {
+						if (previous != null && !(player instanceof Factory)) {
-							uninjectPlayer(previous.getPlayer(), false, true);
+							switch (stategy) {
+							case OVERRIDE:
+								uninjectPlayer(previous.getPlayer(), true);
+								break;
+							case BAIL_OUT:
+								return null;
+							}
 						}
-	
 						injector.injectManager();
 						
-						if (inputStream != null)
+						// Save injector
-							dataInputLookup.put(inputStream, injector);
+						inputStreamLookup.setSocketInjector(address, injector);
-						if (address != null) 
-							addressLookup.put(address, injector);
 						break;
 					}
 					
@@ -404,33 +418,21 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	 */
 	@Override
 	public boolean uninjectPlayer(Player player) {
-		return uninjectPlayer(player, true, false);
+		return uninjectPlayer(player, false);
 	}
 	
 	/**
 	 * Unregisters the given player.
 	 * @param player - player to unregister.
-	 * @param removeAuxiliary - TRUE to remove auxiliary information, such as input stream and address.
-	 * @return TRUE if a player has been uninjected, FALSE otherwise.
-	 */
-	public boolean uninjectPlayer(Player player, boolean removeAuxiliary) {
-		return uninjectPlayer(player, removeAuxiliary, false);
-	}
-	
-	/**
-	 * Unregisters the given player.
-	 * @param player - player to unregister.
-	 * @param removeAuxiliary - TRUE to remove auxiliary information, such as input stream and address.
 	 * @param prepareNextHook - whether or not we need to fix any lingering hooks.
 	 * @return TRUE if a player has been uninjected, FALSE otherwise.
 	 */
-	private boolean uninjectPlayer(Player player, boolean removeAuxiliary, boolean prepareNextHook) {
+	private boolean uninjectPlayer(Player player, boolean prepareNextHook) {
 		if (!hasClosed && player != null) {
 			
 			PlayerInjector injector = playerInjection.remove(player);
 
 			if (injector != null) {
-				InetSocketAddress address = player.getAddress();
 				injector.cleanupAll();
 				
 				// Remove the "hooked" network manager in our instance as well
@@ -446,12 +448,6 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 					}
 				}
 				
-				// Clean up
-				if (removeAuxiliary) {
-					// Note that the dataInputLookup will clean itself
-					if (address != null) 
-						addressLookup.remove(address);
-				}
 				return true;
 			}
 		}
@@ -471,11 +467,11 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	@Override
 	public boolean uninjectPlayer(InetSocketAddress address) {
 		if (!hasClosed && address != null) {
-			PlayerInjector injector = addressLookup.get(address);
+			SocketInjector injector = inputStreamLookup.peekSocketInjector(address);
 			
 			// Clean up
 			if (injector != null)
-				uninjectPlayer(injector.getPlayer(), false, true);
+				uninjectPlayer(injector.getPlayer(), true);
 			return true;
 		}
 		
@@ -491,7 +487,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	 */
 	@Override
 	public void sendServerPacket(Player reciever, PacketContainer packet, boolean filters) throws InvocationTargetException {
-		PlayerInjector injector = getInjector(reciever);
+		SocketInjector injector = getInjector(reciever);
 		
 		// Send the packet, or drop it completely
 		if (injector != null) {
@@ -513,7 +509,6 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	 */
 	@Override
 	public void processPacket(Player player, Object mcPacket) throws IllegalAccessException, InvocationTargetException {
-		
 		PlayerInjector injector = getInjector(player);
 		
 		// Process the given packet, or simply give up
@@ -536,28 +531,49 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 		
 		if (injector == null) {
 			// Try getting it from the player itself
-			if (player instanceof InjectContainer)
+			SocketAddress address = player.getAddress();
-				return ((InjectContainer) player).getInjector();
+			// Look that up without blocking
+			SocketInjector result = inputStreamLookup.peekSocketInjector(address);
+
+			// Ensure that it is non-null and a player injector
+			if (result instanceof PlayerInjector)
+				return (PlayerInjector) result;
 			else
-				return searchAddressLookup(player);
+				// Make a dummy injector them
+				return createDummyInjector(player);
+			
 		} else {
 			return injector;
 		}
 	}
 	
 	/**
-	 * Find an injector by looking through the address map.
+	 * Construct a simple dummy injector incase none has been constructed.
-	 * @param player - player to find.
+	 * @param player - the CraftPlayer to construct for.
-	 * @return The injector, or NULL if not found.
+	 * @return A dummy injector, or NULL if the given player is not a CraftPlayer.
 	 */
-	private PlayerInjector searchAddressLookup(Player player) {
+	private PlayerInjector createDummyInjector(Player player) {
-		// See if we can find it anywhere
+		if (!MinecraftReflection.getCraftPlayerClass().isAssignableFrom(player.getClass())) {
-		for (PlayerInjector injector : addressLookup.values()) {
+			// No - this is not safe
-			if (player.equals(injector.getUpdatedPlayer())) {
+			return null;
-				return injector;
+		}
-			}
+
+		try {
+			PlayerInjector dummyInjector = getHookInstance(player, PlayerInjectHooks.NETWORK_SERVER_OBJECT);
+			dummyInjector.initializePlayer(player);
+			
+			// This probably means the player has disconnected
+			if (dummyInjector.getSocket() == null) {
+				return null;
+			}
+			
+			inputStreamLookup.setSocketInjector(dummyInjector.getAddress(), dummyInjector);
+			dummyInjectors.asMap().put(player, dummyInjector);
+			return dummyInjector;
+			
+		} catch (IllegalAccessException e) {
+			throw new RuntimeException("Cannot access fields.", e);
 		}
-		return null;
 	}
 	
 	/**
@@ -640,35 +656,18 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 		}
 		
 		// Remove server handler
+		if (inputStreamLookup != null)
+			inputStreamLookup.cleanupAll();
 		if (serverInjection != null)
 			serverInjection.cleanupAll();
 		if (netLoginInjector != null)
 			netLoginInjector.cleanupAll();
+		inputStreamLookup = null;
 		serverInjection = null;
 		netLoginInjector = null;
 		hasClosed = true;
 		
 		playerInjection.clear();
-		addressLookup.clear();
 		invoker = null;
 	}
-
-	/**
-	 * Inform the current PlayerInjector that it should update the DataInputStream next.
-	 * @param player - the player to update.
-	 */
-	@Override
-	public void scheduleDataInputRefresh(Player player) {
-		final PlayerInjector injector = getInjector(player);
-
-		// Update the DataInputStream
-		if (injector != null) {
-			injector.scheduleAction(new Runnable() {
-				@Override
-				public void run() {
-					dataInputLookup.put(injector.getInputStream(false), injector);
-				}
-			});
-		}
-	}
 }

ProtocolLib/src/main/java/com/comphenix/protocol/injector/server/AbstractInputStreamLookup.java

@@ -0,0 +1,119 @@
+package com.comphenix.protocol.injector.server;
+
+import java.io.FilterInputStream;
+import java.io.InputStream;
+import java.lang.reflect.Field;
+import java.net.Socket;
+import java.net.SocketAddress;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+
+import com.comphenix.protocol.error.ErrorReporter;
+import com.comphenix.protocol.reflect.FieldAccessException;
+import com.comphenix.protocol.reflect.FieldUtils;
+import com.comphenix.protocol.reflect.FuzzyReflection;
+
+public abstract class AbstractInputStreamLookup {
+	// Used to access the inner input stream of a filtered input stream
+	private static Field filteredInputField;
+
+	// Error reporter
+	protected final ErrorReporter reporter;
+	
+	// Reference to the server itself
+	protected final Server server;
+
+	protected AbstractInputStreamLookup(ErrorReporter reporter, Server server) {
+		this.reporter = reporter;
+		this.server = server;
+	}
+
+	/**
+	 * Retrieve the underlying input stream that is associated with a given filter input stream.
+	 * @param filtered - the filter input stream.
+	 * @return The underlying input stream that is being filtered.
+	 * @throws FieldAccessException Unable to access input stream.
+	 */
+	protected static InputStream getInputStream(FilterInputStream filtered) {
+		if (filteredInputField == null)
+			filteredInputField = FuzzyReflection.fromClass(FilterInputStream.class, true).
+								  getFieldByType("in", InputStream.class);
+		
+		InputStream current = filtered;
+		
+		try {
+			// Iterate until we find the real input stream
+			while (current instanceof FilterInputStream) {
+				current = (InputStream) FieldUtils.readField(filteredInputField, current, true);
+			}
+			return current;
+		} catch (IllegalAccessException e) {
+			throw new FieldAccessException("Cannot access filtered input field.", e);
+		}
+	}
+
+	/**
+	 * Inject the given server thread or dedicated connection.
+	 * @param container - class that contains a ServerSocket field.
+	 */
+	public abstract void inject(Object container);
+	
+	/**
+	 * Invoked when the world has loaded.
+	 */
+	public abstract void postWorldLoaded();
+	
+	/**
+	 * Retrieve the associated socket injector for a player.
+	 * @param input - the indentifying filtered input stream.
+	 * @return The socket injector we have associated with this player.
+	 */
+	public abstract SocketInjector waitSocketInjector(InputStream input);
+	
+	/**
+	 * Retrieve an injector by its socket.
+	 * @param socket - the socket.
+	 * @return The socket injector.
+	 */
+	public abstract SocketInjector waitSocketInjector(Socket socket);
+	
+	/**
+	 * Retrieve a injector by its address.
+	 * @param address - the address of the socket.
+	 * @return The socket injector, or NULL if not found.
+	 */
+	public abstract SocketInjector waitSocketInjector(SocketAddress address);
+
+	/**
+	 * Attempt to get a socket injector without blocking the thread.
+	 * @param address - the address to lookup.
+	 * @return The socket injector, or NULL if not found.
+	 */
+	public abstract SocketInjector peekSocketInjector(SocketAddress address);
+	
+	/**
+	 * Associate a given socket address to the provided socket injector.
+	 * @param address - the socket address to associate.
+	 * @param injector - the injector.
+	 */
+	public abstract void setSocketInjector(SocketAddress address, SocketInjector injector);
+
+	/**
+	 * If a player can hold a reference to its parent injector, this method will update that reference.
+	 * @param previous - the previous injector.
+	 * @param current - the new injector.
+	 */
+	protected void onPreviousSocketOverwritten(SocketInjector previous, SocketInjector current) {
+		Player player = previous.getPlayer();
+		
+		// Default implementation
+		if (player instanceof InjectorContainer) {
+			TemporaryPlayerFactory.setInjectorInPlayer(player, current);
+		}
+	}
+	
+	/**
+	 * Invoked when the injection should be undone.
+	 */
+	public abstract void cleanupAll();
+}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/server/InjectorContainer.java

@@ -0,0 +1,21 @@
+package com.comphenix.protocol.injector.server;
+
+/**
+ * Able to store a socket injector.
+ * <p>
+ * A necessary hack.
+ * @author Kristian
+ */
+class InjectorContainer {
+	private volatile SocketInjector injector;
+
+	public SocketInjector getInjector() {
+		return injector;
+	}
+
+	public void setInjector(SocketInjector injector) {
+		if (injector == null)
+			throw new IllegalArgumentException("Injector cannot be NULL.");
+		this.injector = injector;
+	}
+}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/server/InputStreamLookupBuilder.java

@@ -0,0 +1,47 @@
+package com.comphenix.protocol.injector.server;
+
+import org.bukkit.Server;
+
+import com.comphenix.protocol.error.ErrorReporter;
+
+/**
+ * Constructs the appropriate input stream lookup for the current JVM and architecture.
+ * 
+ * @author Kristian
+ */
+public class InputStreamLookupBuilder {
+	public static InputStreamLookupBuilder newBuilder() {
+		return new InputStreamLookupBuilder();
+	}
+
+	protected InputStreamLookupBuilder() {
+		// Use the static method.
+	}
+	
+	private Server server;
+	private ErrorReporter reporter;
+
+	/**
+	 * Set the server instance to use.
+	 * @param server - server instance.
+	 * @return The current builder, for chaining.
+	 */
+	public InputStreamLookupBuilder server(Server server) {
+		this.server = server;
+		return this;
+	}
+	
+	/**
+	 * Set the error reporter to pass on to the lookup.
+	 * @param reporter - the error reporter.
+	 * @return The current builder, for chaining.
+	 */
+	public InputStreamLookupBuilder reporter(ErrorReporter reporter) {
+		this.reporter = reporter;
+		return this;
+	}
+	
+	public AbstractInputStreamLookup build() {
+		return new InputStreamReflectLookup(reporter, server);
+	}
+}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/server/InputStreamReflectLookup.java

@@ -0,0 +1,164 @@
+package com.comphenix.protocol.injector.server;
+
+import java.io.FilterInputStream;
+import java.io.InputStream;
+import java.lang.reflect.Field;
+import java.net.Socket;
+import java.net.SocketAddress;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
+
+import org.bukkit.Server;
+
+import com.comphenix.protocol.concurrency.BlockingHashMap;
+import com.comphenix.protocol.error.ErrorReporter;
+import com.comphenix.protocol.reflect.FieldAccessException;
+import com.comphenix.protocol.reflect.FieldUtils;
+import com.comphenix.protocol.reflect.FuzzyReflection;
+import com.google.common.collect.MapMaker;
+
+class InputStreamReflectLookup extends AbstractInputStreamLookup {
+	// The default lookup timeout
+	private static final long DEFAULT_TIMEOUT = 2000; // ms
+	
+	// Using weak keys and values ensures that we will not hold up garbage collection
+	protected BlockingHashMap<SocketAddress, SocketInjector> addressLookup = new BlockingHashMap<SocketAddress, SocketInjector>();
+	protected ConcurrentMap<InputStream, SocketAddress> inputLookup = new MapMaker().weakValues().makeMap();
+	
+	// The timeout
+	private final long injectorTimeout;
+	
+	public InputStreamReflectLookup(ErrorReporter reporter, Server server) {
+		this(reporter, server, DEFAULT_TIMEOUT);
+	}
+
+	/**
+	 * Initialize a reflect lookup with a given default injector timeout.
+	 * <p>
+	 * This timeout defines the maximum amount of time to wait until an injector has been discovered.
+	 * @param reporter - the error reporter.
+	 * @param server - the current Bukkit server.
+	 * @param injectorTimeout - the injector timeout.
+	 */
+	public InputStreamReflectLookup(ErrorReporter reporter, Server server, long injectorTimeout) {
+		super(reporter, server);
+		this.injectorTimeout = injectorTimeout;
+	}
+	
+	@Override
+	public void inject(Object container) {
+		// Do nothing
+	}
+
+	@Override
+	public void postWorldLoaded() {
+		// Nothing again
+	}
+	
+	@Override
+	public SocketInjector peekSocketInjector(SocketAddress address) {
+		try {
+			return addressLookup.get(address, 0, TimeUnit.MILLISECONDS);
+		} catch (InterruptedException e) {
+			// Whatever
+			return null;
+		}
+	}
+
+	@Override
+	public SocketInjector waitSocketInjector(SocketAddress address) {
+		try {
+			// Note that we actually SWALLOW interrupts here - this is because Minecraft uses interrupts to 
+			// periodically wake up waiting readers and writers. We have to wait for the dedicated server thread
+			// to catch up, so we'll swallow these interrupts.
+			//
+			// TODO: Consider if we should raise the thread priority of the dedicated server listener thread. 
+			return addressLookup.get(address, injectorTimeout, TimeUnit.MILLISECONDS, true);
+		} catch (InterruptedException e) { 
+			// This cannot be!
+			throw new IllegalStateException("Impossible exception occured!", e);
+		}
+	}
+	
+	@Override
+	public SocketInjector waitSocketInjector(Socket socket) {
+		return waitSocketInjector(socket.getRemoteSocketAddress());
+	}
+	
+	@Override
+	public SocketInjector waitSocketInjector(InputStream input) {
+		try {
+			SocketAddress address = waitSocketAddress(input);
+			
+			// Guard against NPE
+			if (address != null)
+				return waitSocketInjector(address);
+			else
+				return null;
+		} catch (IllegalAccessException e) {
+			throw new FieldAccessException("Cannot find or access socket field for " + input, e);
+		}
+	}
+
+	/**
+	 * Use reflection to get the underlying socket address from an input stream.
+	 * @param stream - the socket stream to lookup.
+	 * @return The underlying socket address, or NULL if not found.
+	 * @throws IllegalAccessException Unable to access socket field.
+	 */
+	private SocketAddress waitSocketAddress(InputStream stream) throws IllegalAccessException {
+		// Extra check, just in case
+		if (stream instanceof FilterInputStream)
+			return waitSocketAddress(getInputStream((FilterInputStream) stream));
+		
+		SocketAddress result = inputLookup.get(stream);
+		
+		if (result == null) {
+			Socket socket = lookupSocket(stream);
+			
+			// Save it
+			result = socket.getRemoteSocketAddress();
+			inputLookup.put(stream, result);
+		}
+		return result;
+	}
+	
+	@Override
+	public void setSocketInjector(SocketAddress address, SocketInjector injector) {
+		if (address == null)
+			throw new IllegalArgumentException("address cannot be NULL");
+		if (injector == null)
+			throw new IllegalArgumentException("injector cannot be NULL.");
+		
+		SocketInjector previous = addressLookup.put(address, injector);
+		
+		// Any previous temporary players will also be associated
+		if (previous != null) {
+			// Update the reference to any previous injector
+			onPreviousSocketOverwritten(previous, injector);
+		}
+	}
+
+	@Override
+	public void cleanupAll() {
+		// Do nothing
+	}
+	
+	/**
+	 * Lookup the underlying socket of a stream through reflection.
+	 * @param stream - the socket stream.
+	 * @return The underlying socket. 
+	 * @throws IllegalAccessException If reflection failed.
+	 */
+	private static Socket lookupSocket(InputStream stream) throws IllegalAccessException {
+		if (stream instanceof FilterInputStream) {
+			return lookupSocket(getInputStream((FilterInputStream) stream));
+		} else {
+			// Just do it
+			Field socketField = FuzzyReflection.fromObject(stream, true).
+								 getFieldByType("socket", Socket.class);
+
+			return (Socket) FieldUtils.readField(socketField, stream, true);
+		}
+	}
+}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/server/SocketInjector.java

@@ -0,0 +1,61 @@
+package com.comphenix.protocol.injector.server;
+
+import java.lang.reflect.InvocationTargetException;
+import java.net.Socket;
+import java.net.SocketAddress;
+
+import org.bukkit.entity.Player;
+
+/**
+ * Represents an injector that only gives access to a player's socket.
+ * 
+ * @author Kristian
+ */
+public interface SocketInjector {
+	/**
+	 * Retrieve the associated socket of this player.
+	 * @return The associated socket.
+	 * @throws IllegalAccessException If we're unable to read the socket field.
+	 */
+	public abstract Socket getSocket() throws IllegalAccessException;
+
+	/**
+	 * Retrieve the associated address of this player.
+	 * @return The associated address.
+	 * @throws IllegalAccessException If we're unable to read the socket field.
+	 */
+	public abstract SocketAddress getAddress() throws IllegalAccessException;
+
+	/**
+	 * Attempt to disconnect the current client.
+	 * @param message - the message to display.
+	 * @throws InvocationTargetException If disconnection failed.
+	 */
+	public abstract void disconnect(String message) throws InvocationTargetException;
+
+	/**
+	 * Send a packet to the client.
+	 * @param packet - server packet to send.
+	 * @param filtered - whether or not the packet will be filtered by our listeners.
+	 * @param InvocationTargetException If an error occured when sending the packet.
+	 */
+	public abstract void sendServerPacket(Object packet, boolean filtered)
+			throws InvocationTargetException;
+
+	/**
+	 * Retrieve the hooked player.
+	 */
+	public abstract Player getPlayer();
+
+	/**
+	 * Retrieve the hooked player object OR the more up-to-date player instance.
+	 * @return The hooked player, or a more up-to-date instance.
+	 */
+	public abstract Player getUpdatedPlayer();
+
+	/**
+	 * Invoked when a delegated socket injector transfers the state of one injector to the next. 
+	 * @param delegate - the new injector.
+	 */
+	public abstract void transferState(SocketInjector delegate);
+}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/server/TemporaryPlayerFactory.java

@@ -15,7 +15,7 @@
  *  02111-1307 USA
  */
 
-package com.comphenix.protocol.injector.player;
+package com.comphenix.protocol.injector.server;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -36,26 +36,7 @@ import com.comphenix.protocol.reflect.FieldAccessException;
 /**
  * Create fake player instances that represents pre-authenticated clients.
  */
-class TemporaryPlayerFactory {
+public class TemporaryPlayerFactory {
-	
-	/**
-	 * Able to store a PlayerInjector.
-	 * <p>
-	 * A necessary hack.
-	 * @author Kristian
-	 */
-	public static class InjectContainer {
-		private PlayerInjector injector;
-
-		public PlayerInjector getInjector() {
-			return injector;
-		}
-
-		public void setInjector(PlayerInjector injector) {
-			this.injector = injector;
-		}
-	}
-	
 	// Helpful constructors
 	private final PacketConstructor chatPacket;
 	
@@ -66,6 +47,27 @@ class TemporaryPlayerFactory {
 		chatPacket =  PacketConstructor.DEFAULT.withPacket(3, new Object[] { "DEMO" });
 	}
 	
+	/**
+	 * Retrieve the injector from a given player if it contains one.
+	 * @param player - the player that may contain a reference to a player injector.
+	 * @return The referenced player injector, or NULL if none can be found.
+	 */
+	public static SocketInjector getInjectorFromPlayer(Player player) {
+		if (player instanceof InjectorContainer) {
+			return ((InjectorContainer) player).getInjector();
+		} 
+		return null;
+	}
+	
+	/**
+	 * Set the player injector, if possible.
+	 * @param player - the player to update.
+	 * @param injector - the injector to store.
+	 */
+	public static void setInjectorInPlayer(Player player, SocketInjector injector) {
+		((InjectorContainer) player).setInjector(injector);
+	}
+	
 	/**
 	 * Construct a temporary player that supports a subset of every player command.
 	 * <p>
@@ -80,7 +82,7 @@ class TemporaryPlayerFactory {
 	 *   <li>kickPlayer(String)</li>
 	 * </ul>
 	 * <p>
-	 * Note that the player a player has not been assigned a name yet, and thus cannot be
+	 * Note that a temporary player has not yet been assigned a name, and thus cannot be
 	 * uniquely identified. Use the address instead.
 	 * @param injector - the player injector used.
 	 * @param server - the current server.
@@ -94,7 +96,7 @@ class TemporaryPlayerFactory {
 			public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
 
 				String methodName = method.getName();
-				PlayerInjector injector = ((InjectContainer) obj).getInjector();
+				SocketInjector injector = ((InjectorContainer) obj).getInjector();
 				
 				if (injector == null)
 					throw new IllegalStateException("Unable to find injector.");
@@ -147,7 +149,7 @@ class TemporaryPlayerFactory {
 				public int accept(Method method) {
 					// Do not override the object method or the superclass methods
 					if (method.getDeclaringClass().equals(Object.class) ||
-						method.getDeclaringClass().equals(InjectContainer.class))
+						method.getDeclaringClass().equals(InjectorContainer.class))
 						return 0;
 					else 
 						return 1;
@@ -157,7 +159,7 @@ class TemporaryPlayerFactory {
     	
 		// CGLib is amazing
     	Enhancer ex = new Enhancer();
-    	ex.setSuperclass(InjectContainer.class);
+    	ex.setSuperclass(InjectorContainer.class);
     	ex.setInterfaces(new Class[] { Player.class });
 		ex.setCallbacks(new Callback[] { NoOp.INSTANCE, implementation });
 		ex.setCallbackFilter(callbackFilter);
@@ -165,6 +167,19 @@ class TemporaryPlayerFactory {
     	return (Player) ex.create();
 	}
 	
+	/**
+	 * Construct a temporary player with the given associated socket injector.
+	 * @param server - the parent server.
+	 * @param injector - the referenced socket injector.
+	 * @return The temporary player.
+	 */
+	public Player createTemporaryPlayer(Server server, SocketInjector injector) {
+		Player temporary = createTemporaryPlayer(server);
+		
+		((InjectorContainer) temporary).setInjector(injector);
+		return temporary;
+	}
+	
 	/**
 	 * Send a message to the given client.
 	 * @param injector - the injector representing the client.
@@ -173,7 +188,7 @@ class TemporaryPlayerFactory {
 	 * @throws InvocationTargetException If the message couldn't be sent.
 	 * @throws FieldAccessException If we were unable to construct the message packet.
 	 */
-	private Object sendMessage(PlayerInjector injector, String message) throws InvocationTargetException, FieldAccessException {
+	private Object sendMessage(SocketInjector injector, String message) throws InvocationTargetException, FieldAccessException {
 		injector.sendServerPacket(chatPacket.createPacket(message).getHandle(), false);
 		return null;
 	}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/spigot/DummyPlayerHandler.java

@@ -4,8 +4,6 @@ import java.io.DataInputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.net.InetSocketAddress;
 import java.util.Set;
-import java.util.concurrent.TimeUnit;
-
 import org.bukkit.entity.Player;
 
 import com.comphenix.protocol.concurrency.IntegerSet;
@@ -50,11 +48,6 @@ class DummyPlayerHandler implements PlayerInjectionHandler {
 		throw new UnsupportedOperationException("This is not needed in Spigot.");
 	}
 
-	@Override
-	public void scheduleDataInputRefresh(Player player) {
-		// Fine
-	}
-	
 	@Override
 	public void addPacketHandler(int packetID) {
 		sendingFilters.add(packetID);
@@ -86,7 +79,8 @@ class DummyPlayerHandler implements PlayerInjectionHandler {
 	}
 	
 	@Override
-	public void injectPlayer(Player player) {
+	public void injectPlayer(Player player, ConflictStrategy strategy) {
+		// We don't care about strategy
 		injector.injectPlayer(player);
 	}
 	
@@ -106,11 +100,6 @@ class DummyPlayerHandler implements PlayerInjectionHandler {
 		return PlayerInjectHooks.NETWORK_SERVER_OBJECT;
 	}
 	
-	@Override
-	public Player getPlayerByConnection(DataInputStream inputStream, long playerTimeout, TimeUnit unit) throws InterruptedException {
-		throw new UnsupportedOperationException("This is not needed in Spigot.");
-	}
-	
 	@Override
 	public Player getPlayerByConnection(DataInputStream inputStream) throws InterruptedException {
 		throw new UnsupportedOperationException("This is not needed in Spigot.");
@@ -125,4 +114,9 @@ class DummyPlayerHandler implements PlayerInjectionHandler {
 	public void checkListener(Set<PacketListener> listeners) {
 		// Yes, really
 	}
+
+	@Override
+	public void postWorldLoaded() {
+		// Do nothing
+	}
 }

ProtocolLib/src/main/java/com/comphenix/protocol/injector/spigot/SpigotPacketInjector.java

@@ -349,7 +349,7 @@ public class SpigotPacketInjector implements SpigotPacketListener {
 	public Object packetQueued(Object networkManager, Object connection, Object packet) {
 		Integer id = invoker.getPacketID(packet);
 		
-		if (id != null & queuedFilters.contains(id)) {
+		if (id != null && queuedFilters.contains(id)) {
 			// Check for ignored packets
 			if (ignoredPackets.remove(packet)) {
 				return packet;
@@ -427,7 +427,7 @@ public class SpigotPacketInjector implements SpigotPacketListener {
 	void uninjectPlayer(Player player) {
 		final NetworkObjectInjector injector = getInjector(player);
 		
-		if (player != null) {
+		if (player != null && injector != null) {
 			Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, new Runnable() {
 				@Override
 				public void run() {

ProtocolLib/src/main/java/com/comphenix/protocol/metrics/Updater.java

@@ -9,6 +9,7 @@ package com.comphenix.protocol.metrics;
  * This class provides the means to safetly and easily update a plugin, or check to see if it is updated using dev.bukkit.org
  */
 import java.io.*;
+import java.net.ConnectException;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLConnection;
@@ -259,10 +260,18 @@ public class Updater
             logger.warning("The project slug added ('" + slug + "') is invalid, and does not exist on dev.bukkit.org");
             result = Updater.UpdateResult.FAIL_BADSLUG; // Bad slug! Bad!
         }
+        
         if (url != null)
         {
             // Obtain the results of the project's file feed
-            readFeed();
+            try {
+				readFeed();
+			} catch (ConnectException ex) {
+				// Minimal warning - it's just a temporary problem
+				logger.warning("Update problem: " + ex.getMessage());
+				return UpdateResult.FAIL_DBO;
+			}
+            
             if(versionCheck(versionTitle))
             {            	
                 String fileLink = getFile(versionLink);
@@ -545,8 +554,9 @@ public class Updater
     
     /**
      * Part of RSS Reader by Vogella, modified by H31IX for use with Bukkit
+     * @throws ConnectException Cannot connect to the server.
      */ 
-    private void readFeed() 
+    private void readFeed() throws ConnectException 
     {
         try 
         {
@@ -598,15 +608,15 @@ public class Updater
 
     /**
      * Open the RSS feed
+     * @throws ConnectException If we are unable to connect to the server.
      */    
-    private InputStream read() 
+    private InputStream read() throws ConnectException 
     {
-        try 
+        try  {
-        {
             return url.openStream();
-        } 
+        } catch (ConnectException e) {
-        catch (IOException e) 
+        	throw e;
-        {
+        } catch (IOException e)  {
             throw new RuntimeException(e);
         }
     }

ProtocolLib/src/main/java/com/comphenix/protocol/reflect/FuzzyReflection.java

@@ -24,11 +24,13 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 import java.util.regex.Pattern;
 
 import com.comphenix.protocol.reflect.fuzzy.AbstractFuzzyMatcher;
 import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
 
 /**
  * Retrieves fields and methods by signature, not just name.
@@ -422,6 +424,22 @@ public class FuzzyReflection {
 			throw new IllegalArgumentException("Unable to find a method that matches " + matcher);
 	}
 	
+	/**
+	 * Retrieve every method as a map over names. 
+	 * <p>
+	 * Note that overloaded methods will only occur once in the resulting map.
+	 * @param methods - every method.
+	 * @return A map over every given method.
+	 */
+	public Map<String, Method> getMappedMethods(List<Method> methods) {
+		Map<String, Method> map = Maps.newHashMap();
+		
+		for (Method method : methods) {
+			map.put(method.getName(), method);
+		}
+		return map;
+	}
+	
 	/**
 	 * Retrieve a list of every constructor that matches the given matcher.
 	 * <p>

ProtocolLib/src/main/java/com/comphenix/protocol/reflect/PrettyPrinter.java

@@ -21,6 +21,8 @@ import java.lang.reflect.Array;
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import java.util.HashSet;
+import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Set;
 
 import com.google.common.primitives.Primitives;
@@ -80,7 +82,7 @@ public class PrettyPrinter {
 		
 		// Start and stop
 		output.append("{ ");
-		printObject(output, object, start, stop, previous, hierachyDepth);
+		printObject(output, object, start, stop, previous, hierachyDepth, true);
 		output.append(" }");
 		
 		return output.toString();
@@ -99,16 +101,43 @@ public class PrettyPrinter {
 			else
 				output.append(", ");
 			
-			// Handle exceptions
+			// Print value
-			if (value != null)
+			printValue(output, value,  stop, previous, hierachyIndex - 1);
-				printValue(output, value, value.getClass(), stop, previous, hierachyIndex - 1);
-			else
-				output.append("NULL");
 		}
 		
 		output.append(")");
 	}
 
+	/**
+	 * Print the content of a maps entries.
+	 * @param output - the output string builder.
+	 * @param map - the map to print.
+	 * @param current - the type of this map.
+	 * @param stop - the class that indicates we should stop printing.
+	 * @param previous - previous objects printed.
+	 * @param hierachyIndex - hierachy index.
+	 * @throws IllegalAccessException If any reflection went wrong.
+	 */
+	private static void printMap(StringBuilder output, Map<Object, Object> map, Class<?> current, Class<?> stop, 
+			   Set<Object> previous, int hierachyIndex) throws IllegalAccessException {	
+
+		boolean first = true;
+		output.append("[");
+
+		for (Entry<Object, Object> entry : map.entrySet()) {
+			if (first)
+				first = false;
+			else
+				output.append(", ");
+
+			printValue(output, entry.getKey(), stop, previous, hierachyIndex - 1);
+			output.append(": ");
+			printValue(output, entry.getValue(),  stop, previous, hierachyIndex - 1);
+		}
+
+		output.append("]");
+	}
+	
 	private static void printArray(StringBuilder output, Object array, Class<?> current, Class<?> stop, 
 								   Set<Object> previous, int hierachyIndex) throws IllegalAccessException {	
 		
@@ -142,9 +171,7 @@ public class PrettyPrinter {
 	
 	// Internal recursion method
 	private static void printObject(StringBuilder output, Object object, Class<?> current, Class<?> stop, 
-									Set<Object> previous, int hierachyIndex) throws IllegalAccessException {
+									Set<Object> previous, int hierachyIndex, boolean first) throws IllegalAccessException {
-		// Trickery
-		boolean first = true;
 		
 		// See if we're supposed to skip this class
 		if (current == Object.class || (stop != null && current.equals(stop))) {
@@ -168,10 +195,11 @@ public class PrettyPrinter {
 				Class<?> type = field.getType();
 				Object value = FieldUtils.readField(field, object, true);
 				
-				if (first) 
+				if (first) {
 					first = false;
-				else
+				} else {
 					output.append(", ");
+				}
 				
 				output.append(field.getName());
 				output.append(" = ");
@@ -180,10 +208,16 @@ public class PrettyPrinter {
 		}
 		
 		// Recurse
-		printObject(output, object, current.getSuperclass(), stop, previous, hierachyIndex);
+		printObject(output, object, current.getSuperclass(), stop, previous, hierachyIndex, first);
 	}
 
-	@SuppressWarnings("rawtypes")
+	private static void printValue(StringBuilder output, Object value, Class<?> stop, 
+								   Set<Object> previous, int hierachyIndex) throws IllegalAccessException {
+		// Handle the NULL case
+		printValue(output, value, value != null ? value.getClass() : null, stop, previous, hierachyIndex);
+	}
+	
+	@SuppressWarnings({"rawtypes", "unchecked"})
 	private static void printValue(StringBuilder output, Object value, Class<?> type, 
 								   Class<?> stop, Set<Object> previous, int hierachyIndex) throws IllegalAccessException {
 		// Just print primitive types
@@ -197,12 +231,14 @@ public class PrettyPrinter {
 			printArray(output, value, type, stop, previous, hierachyIndex);
 		} else if (Iterable.class.isAssignableFrom(type)) {
 			printIterables(output, (Iterable) value, type, stop, previous, hierachyIndex);
+		} else if (Map.class.isAssignableFrom(type)) {
+			printMap(output, (Map<Object, Object>) value, type, stop, previous, hierachyIndex);
 		} else if (ClassLoader.class.isAssignableFrom(type) || previous.contains(value)) {
 			// Don't print previous objects
 			output.append("\"" + value + "\"");
 		} else {
 			output.append("{ ");
-			printObject(output, value, value.getClass(), stop, previous, hierachyIndex);
+			printObject(output, value, value.getClass(), stop, previous, hierachyIndex, true);
 			output.append(" }");
 		}
 	}

ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/BackgroundCompiler.java

@@ -17,6 +17,10 @@
 
 package com.comphenix.protocol.reflect.compiler;
 
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryPoolMXBean;
+import java.lang.management.MemoryUsage;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutorService;
@@ -29,6 +33,9 @@ import javax.annotation.Nullable;
 
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.reflect.StructureModifier;
+import com.comphenix.protocol.reflect.compiler.StructureCompiler.StructureKey;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 
 /**
@@ -48,9 +55,18 @@ public class BackgroundCompiler {
 	// How long to wait for a shutdown
 	public static final int SHUTDOWN_DELAY_MS = 2000;
 	
+	/**
+	 * The default fraction of perm gen space after which the background compiler will be disabled.
+	 */
+	public static final double DEFAULT_DISABLE_AT_PERM_GEN = 0.65;
+	
 	// The single background compiler we're using
 	private static BackgroundCompiler backgroundCompiler;
 	
+	// Classes we're currently compiling
+	private Map<StructureKey, List<CompileListener<?>>> listeners = Maps.newHashMap();
+	private Object listenerLock = new Object();
+	
 	private StructureCompiler compiler;
 	private boolean enabled;
 	private boolean shuttingDown;
@@ -58,6 +74,8 @@ public class BackgroundCompiler {
 	private ExecutorService executor;
 	private ErrorReporter reporter;
 
+	private double disablePermGenFraction = DEFAULT_DISABLE_AT_PERM_GEN;
+	
 	/**
 	 * Retrieves the current background compiler.
 	 * @return Current background compiler.
@@ -139,25 +157,60 @@ public class BackgroundCompiler {
 	 * @param uncompiled - structure modifier to compile.
 	 * @param listener - listener responsible for responding to the compilation.
 	 */
+	@SuppressWarnings({"rawtypes", "unchecked"})
 	public <TKey> void scheduleCompilation(final StructureModifier<TKey> uncompiled, final CompileListener<TKey> listener) {
-
 		// Only schedule if we're enabled
 		if (enabled && !shuttingDown) {
+			// Check perm gen
+			if (getPermGenUsage() > disablePermGenFraction)
+				return;
 			
 			// Don't try to schedule anything
 			if (executor == null || executor.isShutdown())
 				return;
 
+			// Use to look up structure modifiers
+			final StructureKey key = new StructureKey(uncompiled);
+			
+			// Allow others to listen in too
+			synchronized (listenerLock) {
+				List list = listeners.get(key);
+				
+				if (!listeners.containsKey(key)) {
+					listeners.put(key, (List) Lists.newArrayList(listener)); 
+				} else {
+					// We're currently compiling
+					list.add(listener);
+					return;
+				}
+			}
+			
 			// Create the worker that will compile our modifier
 			Callable<?> worker = new Callable<Object>() {
 				@Override
 				public Object call() throws Exception {
 					StructureModifier<TKey> modifier = uncompiled;
+					List list = null;
 					
 					// Do our compilation
 					try {
 						modifier = compiler.compile(modifier);
-						listener.onCompiled(modifier);
+						
+						synchronized (listenerLock) {
+							list = listeners.get(key);
+						}
+						
+						// Only execute the listeners if there is a list
+						if (list != null) {
+							for (Object compileListener : list) {
+								((CompileListener<TKey>) compileListener).onCompiled(modifier);
+							}
+							
+							// Remove it when we're done
+							synchronized (listenerLock) {
+								list = listeners.remove(key);
+							}
+						}
 						
 					} catch (Throwable e) {
 						// Disable future compilations!
@@ -205,6 +258,41 @@ public class BackgroundCompiler {
 		}
 	}
 	
+	/**
+	 * Add a compile listener if we are still waiting for the structure modifier to be compiled.
+	 * @param uncompiled - the structure modifier that may get compiled.
+	 * @param listener - the listener to invoke in that case.
+	 */
+	@SuppressWarnings("unchecked")
+	public <TKey> void addListener(final StructureModifier<TKey> uncompiled, final CompileListener<TKey> listener) {
+		synchronized (listenerLock) {
+			StructureKey key = new StructureKey(uncompiled);
+			
+			@SuppressWarnings("rawtypes")
+			List list = listeners.get(key); 
+			
+			if (list != null) {
+				list.add(listener);
+			}
+		}
+	}
+	
+	/**
+	 * Retrieve the current usage of the Perm Gen space in percentage.
+	 * @return Usage of the perm gen space.
+	 */
+	private double getPermGenUsage() {
+		for (MemoryPoolMXBean item : ManagementFactory.getMemoryPoolMXBeans()) {
+			if (item.getName().contains("Perm Gen")) {
+				MemoryUsage usage = item.getUsage();
+				return usage.getUsed() / (double) usage.getCommitted();
+			}
+		}
+		
+		// Unknown
+		return 0;
+	}
+	
 	/**
 	 * Clean up after ourselves using the default timeout.
 	 */
@@ -246,6 +334,22 @@ public class BackgroundCompiler {
 		this.enabled = enabled;
 	}
 
+	/**
+	 * Retrieve the fraction of perm gen space used after which the background compiler will be disabled.
+	 * @return The fraction after which the background compiler is disabled.
+	 */
+	public double getDisablePermGenFraction() {
+		return disablePermGenFraction;
+	}
+	
+	/**
+	 * Set the fraction of perm gen space used after which the background compiler will be disabled.
+	 * @param fraction - the maximum use of perm gen space.
+	 */
+	public void setDisablePermGenFraction(double fraction) {
+		this.disablePermGenFraction = fraction;
+	}
+	
 	/**
 	 * Retrieve the current structure compiler.
 	 * @return Current structure compiler.

ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/StructureCompiler.java

@@ -25,6 +25,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
+import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.reflect.StructureModifier;
 import com.google.common.base.Objects;
 import com.google.common.primitives.Primitives;
@@ -94,7 +95,7 @@ public final class StructureCompiler {
 
 	// Used to store generated classes of different types
 	@SuppressWarnings("rawtypes")
-	private static class StructureKey {
+	static class StructureKey {
 		private Class targetType;
 		private Class fieldType;
 		
@@ -206,6 +207,11 @@ public final class StructureCompiler {
 			return (StructureModifier<TField>) compiledClass.getConstructor(
 					StructureModifier.class, StructureCompiler.class).
 					 newInstance(source, this);
+		} catch (OutOfMemoryError e) {
+			// Print the number of generated classes by the current instances
+			ProtocolLibrary.getErrorReporter().reportWarning(
+					this, "May have generated too many classes (count: " + compiledCache.size() + ")");
+			throw e;
 		} catch (IllegalArgumentException e) {
 			throw new IllegalStateException("Used invalid parameters in instance creation", e);
 		} catch (SecurityException e) {

ProtocolLib/src/main/java/com/comphenix/protocol/utility/CachedPackage.java

@@ -58,7 +58,7 @@ class CachedPackage {
 			if (result == null) {
 				// Look up the class dynamically
 				result = CachedPackage.class.getClassLoader().
-							loadClass(packageName + "." + className);
+							loadClass(combine(packageName, className));
 				cache.put(className, result);
 			}
 
@@ -68,4 +68,16 @@ class CachedPackage {
 			throw new RuntimeException("Cannot find class " + className, e);
 		}
 	}
+	
+	/**
+	 * Correctly combine a package name and the child class we're looking for.
+	 * @param packageName - name of the package, or an empty string for the default package.
+	 * @param className - the class name.
+	 * @return We full class path.
+	 */
+	private String combine(String packageName, String className) {
+		if (packageName.length() == 0)
+			return className;
+		return packageName + "." + className;
+	}
 }

ProtocolLib/src/main/java/com/comphenix/protocol/utility/ChatExtensions.java

@@ -27,6 +27,7 @@ import com.comphenix.protocol.Packets;
 import com.comphenix.protocol.ProtocolManager;
 import com.comphenix.protocol.injector.PacketConstructor;
 import com.comphenix.protocol.reflect.FieldAccessException;
+import com.google.common.base.Strings;
 
 /**
  * Utility methods for sending chat messages.
@@ -98,4 +99,48 @@ public class ChatExtensions {
 			}
 		}
 	}
+	
+	/**
+	 * Print a flower box around a given message.
+	 * @param message - the message to print.
+	 * @param marginChar - the character to use as margin.
+	 * @param marginWidth - the width (in characters) of the left and right margin.
+	 * @param marginHeight - the height (in characters) of the top and buttom margin.
+	 */
+	public static String[] toFlowerBox(String[] message, String marginChar, int marginWidth, int marginHeight) {
+		String[] output = new String[message.length + marginHeight * 2];
+		int width = getMaximumLength(message);
+		
+		// Margins
+		String topButtomMargin = Strings.repeat(marginChar, width + marginWidth * 2);
+		String leftRightMargin = Strings.repeat(marginChar, marginWidth);
+		
+		// Add left and right margin
+		for (int i = 0; i < message.length; i++) {
+			output[i + marginHeight] = leftRightMargin + Strings.padEnd(message[i], width, ' ') + leftRightMargin;
+		}
+		
+		// Insert top and bottom margin
+		for (int i = 0; i < marginHeight; i++) {
+			output[i] = topButtomMargin;
+			output[output.length - i - 1] = topButtomMargin;
+		}
+		return output;
+	}
+	
+	/**
+	 * Retrieve the longest line lenght in a list of strings.
+	 * @param lines - the lines.
+	 * @return Longest line lenght.
+	 */
+	private static int getMaximumLength(String[] lines) {
+		int current = 0;
+		
+		// Find the longest line
+		for (int i = 0; i < lines.length; i++) {
+			if (current < lines[i].length())
+				current = lines[i].length();
+		}
+		return current;
+	}
 }

ProtocolLib/src/main/java/com/comphenix/protocol/utility/MinecraftMethods.java

@@ -0,0 +1,64 @@
+package com.comphenix.protocol.utility;
+
+import java.lang.reflect.Method;
+import java.util.Map;
+
+import com.comphenix.protocol.reflect.FuzzyReflection;
+
+/**
+ * Static methods for accessing Minecraft methods.
+ * 
+ * @author Kristian
+ */
+public class MinecraftMethods {
+	// For player connection
+	private volatile static Method sendPacketMethod;
+	
+	/**
+	 * Retrieve the send packet method in PlayerConnection/NetServerHandler.
+	 * @return The send packet method.
+	 */
+	public static Method getSendPacketMethod() {
+		if (sendPacketMethod == null) {
+			Class<?> serverHandlerClass = MinecraftReflection.getNetServerHandlerClass();
+			
+			try {
+				sendPacketMethod = FuzzyReflection.fromObject(serverHandlerClass).getMethodByName("sendPacket.*");
+			} catch (IllegalArgumentException e) {
+				Map<String, Method> netServer = getMethodList(
+						serverHandlerClass, MinecraftReflection.getPacketClass());
+				Map<String, Method> netHandler = getMethodList(
+						MinecraftReflection.getNetHandlerClass(), MinecraftReflection.getPacketClass());
+				
+				// Remove every method in net handler from net server
+				for (String methodName : netHandler.keySet()) {
+					netServer.remove(methodName);
+				}
+				
+				// The remainder is the send packet method
+				if (netServer.size() ==  1) {
+					Method[] methods = netServer.values().toArray(new Method[0]);
+					sendPacketMethod = methods[0];
+				} else {
+					throw new IllegalArgumentException("Unable to find the sendPacket method in NetServerHandler/PlayerConnection.");
+				}
+			}
+		}
+		return sendPacketMethod;
+	}
+	
+	/**
+	 * Retrieve a method mapped list of every method with the given signature.
+	 * @param source - class source.
+	 * @param params - parameters.
+	 * @return Method mapped list.
+	 */
+	private static Map<String, Method> getMethodList(Class<?> source, Class<?>... params) {
+		FuzzyReflection reflect = FuzzyReflection.fromClass(source, true);
+		
+		return reflect.getMappedMethods(
+			reflect.getMethodListByParameters(Void.TYPE, params)
+		);
+	}
+	
+}

ProtocolLib/src/main/java/com/comphenix/protocol/utility/MinecraftReflection.java

@@ -125,15 +125,15 @@ public class MinecraftReflection {
 		// This server should have a "getHandle" method that we can use
 		if (craftServer != null) {
 			try {
-				Class<?> craftClass = craftServer.getClass();
-				Method getHandle = craftClass.getMethod("getHandle");
-				
-				Class<?> returnType = getHandle.getReturnType();
-				String returnName = returnType.getCanonicalName();
-				
 				// The return type will tell us the full package, regardless of formating
+				Class<?> craftClass = craftServer.getClass();
 				CRAFTBUKKIT_PACKAGE = getPackage(craftClass.getCanonicalName());
-				MINECRAFT_FULL_PACKAGE = getPackage(returnName);
+				
+				// Next, do the same for CraftEntity.getHandle() in order to get the correct Minecraft package
+				Class<?> craftEntity = getCraftEntityClass();
+				Method getHandle = craftEntity.getMethod("getHandle");
+				
+				MINECRAFT_FULL_PACKAGE = getPackage(getHandle.getReturnType().getCanonicalName());
 				
 				// Pretty important invariant
 				if (!MINECRAFT_FULL_PACKAGE.startsWith(MINECRAFT_PREFIX_PACKAGE)) {
@@ -185,7 +185,8 @@ public class MinecraftReflection {
 	 */
 	public static String getCraftBukkitPackage() {
 		// Ensure it has been initialized
-		getMinecraftPackage();
+		if (CRAFTBUKKIT_PACKAGE == null)
+			getMinecraftPackage();
 		return CRAFTBUKKIT_PACKAGE;
 	}
 	
@@ -491,22 +492,29 @@ public class MinecraftReflection {
 		try {
 			return getMinecraftClass("MinecraftServer");
 		} catch (RuntimeException e) {		
-			// Get the first constructor that matches CraftServer(MINECRAFT_OBJECT, ANY)
+			useFallbackServer();
-			Constructor<?> selected = FuzzyReflection.fromClass(getCraftBukkitClass("CraftServer")).
+			return getMinecraftClass("MinecraftServer");
-					getConstructor(FuzzyMethodContract.newBuilder().
-							parameterMatches(getMinecraftObjectMatcher(), 0).
-							parameterCount(2).
-							build()
-					);
-			Class<?>[] params = selected.getParameterTypes();
-			
-			// Jackpot - two classes at the same time!
-			setMinecraftClass("MinecraftServer", params[0]);
-			setMinecraftClass("ServerConfigurationManager", params[1]);
-			return params[0];
 		}
 	}
 	
+	/**
+	 * Fallback method that can determine the MinecraftServer and the ServerConfigurationManager.
+	 */
+	private static void useFallbackServer() {
+		// Get the first constructor that matches CraftServer(MINECRAFT_OBJECT, ANY)
+		Constructor<?> selected = FuzzyReflection.fromClass(getCraftBukkitClass("CraftServer")).
+				getConstructor(FuzzyMethodContract.newBuilder().
+						parameterMatches(getMinecraftObjectMatcher(), 0).
+						parameterCount(2).
+						build()
+				);
+		Class<?>[] params = selected.getParameterTypes();
+		
+		// Jackpot - two classes at the same time!
+		setMinecraftClass("MinecraftServer", params[0]);
+		setMinecraftClass("ServerConfigurationManager", params[1]);
+	}
+
 	/**
 	 * Retrieve the player list class (or ServerConfigurationManager),
 	 * @return The player list class.
@@ -516,7 +524,7 @@ public class MinecraftReflection {
 			return getMinecraftClass("ServerConfigurationManager", "PlayerList");
 		} catch (RuntimeException e) {
 			// Try again
-			getMinecraftServerClass();
+			useFallbackServer();
 			return getMinecraftClass("ServerConfigurationManager");
 		}
 	}
@@ -553,7 +561,7 @@ public class MinecraftReflection {
 			return getMinecraftClass("NetServerHandler", "PlayerConnection");
 		} catch (RuntimeException e) {
 			// Use the player connection field
-			return setMinecraftClass("NetLoginHandler", 
+			return setMinecraftClass("NetServerHandler", 
 						FuzzyReflection.fromClass(getEntityPlayerClass()).
 						getFieldByType("playerConnection", getNetHandlerClass()).getType()
 				   );
@@ -909,6 +917,14 @@ public class MinecraftReflection {
 		return getCraftBukkitClass("entity.CraftPlayer");
 	}
 	
+	/**
+	 * Retrieve the CraftEntity class.
+	 * @return CraftEntity class.
+	 */
+	public static Class<?> getCraftEntityClass() { 
+		return getCraftBukkitClass("entity.CraftEntity");
+	}
+
 	/**
 	 * Retrieve a CraftItemStack from a given ItemStack.
 	 * @param bukkitItemStack - the Bukkit ItemStack to convert.

ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/nbt/MemoryElement.java

@@ -0,0 +1,65 @@
+package com.comphenix.protocol.wrappers.nbt;
+
+class MemoryElement<TType> implements NbtBase<TType> {
+	private String name;
+	private TType value;
+	private NbtType type;
+	
+	public MemoryElement(String name, TType value) {
+		if (name == null)
+			throw new IllegalArgumentException("Name cannot be NULL.");
+		if (value == null)
+			throw new IllegalArgumentException("Element cannot be NULL.");
+		
+		this.name = name;
+		this.value = value;
+		this.type = NbtType.getTypeFromClass(value.getClass());
+	}
+	
+	public MemoryElement(String name, TType value, NbtType type) {
+		if (name == null)
+			throw new IllegalArgumentException("Name cannot be NULL.");
+		if (type == null)
+			throw new IllegalArgumentException("Type cannot be NULL.");
+		
+		this.name = name;
+		this.value = value;
+		this.type = type;
+	}
+
+	@Override
+	public boolean accept(NbtVisitor visitor) {
+		return visitor.visit(this);
+	}
+
+	@Override
+	public NbtType getType() {
+		return type;
+	}
+
+	@Override
+	public String getName() {
+		return name;
+	}
+
+	@Override
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	@Override
+	public TType getValue() {
+		return value;
+	}
+
+	@Override
+	public void setValue(TType newValue) {
+		this.value = newValue;
+	}
+
+	@Override
+	public NbtBase<TType> deepClone() {
+		// This assumes value is an immutable object
+		return new MemoryElement<TType>(name, value, type);
+	}
+}

ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/nbt/NbtBase.java

@@ -64,6 +64,9 @@ public interface NbtBase<TType> {
 	 * Is either a primitive {@link java.lang.Number wrapper}, {@link java.lang.String String}, 
 	 * {@link java.util.List List} or a {@link java.util.Map Map}. 
 	 * <p>
+	 * Users are encouraged to cast an NBT compound to {@link NbtCompound} and use its put and get-methods
+	 * instead of accessing its content from getValue().
+	 * <p>
 	 * All operations that modify collections directly, such as {@link java.util.List#add(Object) List.add(Object)} or 
 	 * {@link java.util.Map#clear() Map.clear()}, are considered optional. This also include members in {@link java.util.Iterator Iterator} and 
 	 * {@link java.util.ListIterator ListIterator}. Operations that are not implemented throw a 

ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/nbt/NbtCompound.java

@@ -5,6 +5,8 @@ import java.util.Iterator;
 import java.util.Map;
 import java.util.Set;
 
+import javax.annotation.Nonnull;
+
 /**
  * Represents a mapping of arbitrary NBT elements and their unique names.
  * <p>
@@ -16,6 +18,10 @@ import java.util.Set;
  * @author Kristian
  */
 public interface NbtCompound extends NbtBase<Map<String, NbtBase<?>>>, Iterable<NbtBase<?>> {
+	@Override
+	@Deprecated()
+	public Map<String, NbtBase<?>> getValue();
+	
 	/**
 	 * Determine if an entry with the given key exists or not.
 	 * @param key - the key to lookup. 
@@ -48,8 +54,9 @@ public interface NbtCompound extends NbtBase<Map<String, NbtBase<?>>>, Iterable<
 	 * Set a entry based on its name.
 	 * @param entry - entry with a name and value.
 	 * @return This compound, for chaining.
+	 * @throws IllegalArgumentException If entry is NULL.
 	 */
-	public abstract <T> NbtCompound put(NbtBase<T> entry);
+	public abstract <T> NbtCompound put(@Nonnull NbtBase<T> entry);
 
 	/**
 	 * Retrieve the string value of an entry identified by a given key.
@@ -252,6 +259,25 @@ public interface NbtCompound extends NbtBase<Map<String, NbtBase<?>>>, Iterable<
 	 */
 	public abstract NbtCompound put(String key, int[] value);
 	
+	/**
+	 * Associates a given Java primitive value, list, map or NbtBase<?> with a certain key.
+	 * <p>
+	 * If the value is NULL, the corresponding key is removed. Any Map or List will be converted
+	 * to a corresponding NbtCompound or NbtList.
+	 * 
+	 * @param key - the name of the new entry,
+	 * @param value - the value of the new entry, or NULL to remove the current value.
+	 * @return This current compound, for chaining.
+	 */
+	public abstract NbtCompound putObject(String key, Object value);
+	
+	/**
+	 * Retrieve the primitive object, NbtList or NbtCompound associated with the given key.
+	 * @param key - the key of the object to find.
+	 * @return The object with this key, or NULL if we couldn't find anything.
+	 */
+	public abstract Object getObject(String key);
+	
 	/**
 	 * Retrieve the compound (map) value of an entry identified by a given key.
 	 * @param key - the key of the entry.
@@ -304,6 +330,13 @@ public interface NbtCompound extends NbtBase<Map<String, NbtBase<?>>>, Iterable<
 	 */
 	public abstract <T> NbtCompound put(String key, Collection<? extends NbtBase<T>> list);
 
+	/**
+	 * Remove the NBT element that is associated with the given key.
+	 * @param key - the key of the element to remove.
+	 * @return The removed element, or NULL if no such element was found.
+	 */
+	public abstract <T> NbtBase<?> remove(String key);
+	
 	/**
 	 * Retrieve an iterator view of the NBT tags stored in this compound.
 	 * @return The tags stored in this compound.

ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/nbt/WrappedCompound.java

@@ -152,7 +152,13 @@ class WrappedCompound implements NbtWrapper<Map<String, NbtBase<?>>>, Iterable<N
 	public void setValue(Map<String, NbtBase<?>> newValue) {
 		// Write all the entries
 		for (Map.Entry<String, NbtBase<?>> entry : newValue.entrySet()) {
-			put(entry.getValue());
+			Object value = entry.getValue();
+			
+			// We don't really know
+			if (value instanceof NbtBase)
+				put(entry.getValue());
+			else
+				putObject(entry.getKey(), entry.getValue());
 		}
 	}
 	
@@ -215,6 +221,9 @@ class WrappedCompound implements NbtWrapper<Map<String, NbtBase<?>>>, Iterable<N
 	 */
 	@Override
 	public <T> NbtCompound put(NbtBase<T> entry) {
+		if (entry == null)
+			throw new IllegalArgumentException("Entry cannot be NULL.");
+		
 		getValue().put(entry.getName(), entry);
 		return this;
 	}
@@ -252,6 +261,29 @@ class WrappedCompound implements NbtWrapper<Map<String, NbtBase<?>>>, Iterable<N
 		return this;
 	}
 	
+	@Override
+	public NbtCompound putObject(String key, Object value) {
+		if (value == null) {
+			remove(key);
+		} else if (value instanceof NbtBase) {
+			put(key, (NbtBase<?>) value);
+		} else {
+			NbtBase<?> base = new MemoryElement<Object>(key, value);
+			put(base);
+		}
+		return this;
+	}
+	
+	@Override
+	public Object getObject(String key) {
+		NbtBase<?> base = getValue(key);
+		
+		if (base != null && base.getType() != NbtType.TAG_LIST && base.getType() != NbtType.TAG_COMPOUND)
+			return base.getValue();
+		else
+			return base;
+	}
+	
 	/**
 	 * Retrieve the byte value of an entry identified by a given key.
 	 * @param key - the key of the entry.
@@ -565,6 +597,9 @@ class WrappedCompound implements NbtWrapper<Map<String, NbtBase<?>>>, Iterable<N
 	
 	@Override
 	public NbtCompound put(String key, NbtBase<?> entry) {
+		if (entry == null)
+			throw new IllegalArgumentException("Entry cannot be NULL.");
+		
 		// Don't modify the original NBT
 		NbtBase<?> clone = entry.deepClone();
 		
@@ -583,6 +618,11 @@ class WrappedCompound implements NbtWrapper<Map<String, NbtBase<?>>>, Iterable<N
 		return put(WrappedList.fromList(key, list));
 	}
 	
+	@Override
+	public <T> NbtBase<?> remove(String key) {
+		return getValue().remove(key);
+	}
+	
 	@Override
 	public void write(DataOutput destination) {
 		NbtBinarySerializer.DEFAULT.serialize(container, destination);

ProtocolLib/src/main/resources/config.yml

@@ -19,4 +19,3 @@ global:
   
   # Override the starting injecting method
   injection method: 
- 

ProtocolLib/src/main/resources/plugin.yml

@@ -1,9 +1,8 @@
 name: ProtocolLib
-version: 2.2.0
+version: 2.3.0
 description: Provides read/write access to the Minecraft protocol.
 author: Comphenix
 website: http://www.comphenix.net/ProtocolLib
-load: startup
 main: com.comphenix.protocol.ProtocolLibrary
 database: false