Bump protocol version

core/src/main/java/com/seibel/distanthorizons/core/api/internal/ClientPluginChannelApi.java

@@ -75,7 +75,12 @@ public class ClientPluginChannelApi
 	
 	private void onLevelInitMessage(LevelInitMessage msg)
 	{
-		if (!msg.levelKey.matches(LevelInitMessage.VALIDATION_REGEX))
+		if (!msg.serverKey.matches(LevelInitMessage.SERVER_KEY_REGEX))
+		{
+			throw new IllegalArgumentException("Server sent invalid server key.");
+		}
+		
+		if (!msg.levelKey.matches(LevelInitMessage.LEVEL_KEY_REGEX))
 		{
 			throw new IllegalArgumentException("Server sent invalid level key.");
 		}
@@ -105,10 +110,12 @@ public class ClientPluginChannelApi
 				this.levelUnloadHandler.accept(clientLevel);
 			}
 			
-			if (existingKeyedClientLevel == null || !existingKeyedClientLevel.getServerLevelKey().equals(msg.levelKey))
+			if (existingKeyedClientLevel == null
+					|| !existingKeyedClientLevel.getServerKey().equals(msg.serverKey)
+					|| !existingKeyedClientLevel.getServerLevelKey().equals(msg.levelKey))
 			{
 				LOGGER.info("Loading level with key: [" + msg.levelKey + "].");
-				IServerKeyedClientLevel keyedLevel = KEYED_CLIENT_LEVEL_MANAGER.setServerKeyedLevel(clientLevel, msg.levelKey);
+				IServerKeyedClientLevel keyedLevel = KEYED_CLIENT_LEVEL_MANAGER.setServerKeyedLevel(clientLevel, msg.serverKey, msg.levelKey);
 				this.levelLoadHandler.accept(keyedLevel);
 			}
 		});

core/src/main/java/com/seibel/distanthorizons/core/config/Config.java

@@ -1599,6 +1599,28 @@ public class Config
 						+ "")
 				.build();
 		
+		public static ConfigEntry<Integer> serverId = new ConfigEntry.Builder<Integer>()
+				.set(new Random().nextInt())
+				.setAppearance(EConfigEntryAppearance.ONLY_IN_FILE)
+				.comment(""
+						+ "DO NOT CHANGE UNLESS YOU KNOW WHAT YOU'RE DOING.\n"
+						+ "Autogenerated ID used to prevent multiple independent servers from accidentally\n"
+						+ "writing over each other's LODs when the same serverKey is set on both.\n"
+						+ "")
+				.build();
+		
+		public static ConfigEntry<String> serverKey = new ConfigEntry.Builder<String>()
+				.setChatCommandName("levelKeys.serverKey")
+				.setAppearance(EConfigEntryAppearance.ONLY_IN_FILE)
+				.set("")
+				.comment(""
+						+ "Custom server key used which can be used to always reuse the same LOD data folder,\n"
+						+ "for cases when the server doesn't have a static IP for some reason.\n"
+						+ "If this value is empty, the client itself decides which folder name to use.\n"
+						+ "Requires rejoining the server to apply after changing.\n"
+						+ "")
+				.build();
+		
 		public static ConfigEntry<String> levelKeyPrefix = new ConfigEntry.Builder<String>()
 				.setChatCommandName("levelKeys.prefix")
 				.set("")
@@ -1705,15 +1727,6 @@ public class Config
 		
 		
 		// Common
-		public static ConfigEntry<Boolean> allowLocalChunkUse = new ConfigEntry.Builder<Boolean>()
-				.setChatCommandName("common.allowLocalChunkUse")
-				.setAppearance(EConfigEntryAppearance.ONLY_IN_FILE)
-				.set(true)
-				.comment(""
-						+ "If true, clients will be able to update LODs using chunks they load."
-						+ "")
-				.build();
-		
 		public static ConfigEntry<Integer> maxDataTransferSpeed = new ConfigEntry.Builder<Integer>()
 				.setChatCommandName("common.maxDataTransferSpeed")
 				.setMinDefaultMax(0, 500, 1000000 /* 1 GB/s */)

core/src/main/java/com/seibel/distanthorizons/core/file/structure/ClientOnlySaveStructure.java

@@ -81,13 +81,20 @@ public class ClientOnlySaveStructure implements ISaveStructure
 			{
 				IServerKeyedClientLevel keyedClientLevel = (IServerKeyedClientLevel) newLevelWrapper;
 				LOGGER.info("Loading level [" + newLevelWrapper.getDhIdentifier() + "] with key: [" + keyedClientLevel.getServerLevelKey() + "].");
-				// This world was identified by the server directly, so we can know for sure which folder to use.
-				saveFolder = getSaveFolderByLevelId(keyedClientLevel.getServerLevelKey());
+				
+				String serverKey = keyedClientLevel.getServerKey();
+				if (serverKey.isEmpty())
+				{
+					serverKey = getServerFolderName();
+				}
+				
+				// This world was identified by the server directly, so we can know for sure which folder to use.				
+				saveFolder = getSaveFolderByLevelId(serverKey, keyedClientLevel.getServerLevelKey());
 			}
 			else
 			{
 				// get the default folder
-				saveFolder = getSaveFolderByLevelId(levelWrapper.getDhIdentifier());
+				saveFolder = getSaveFolderByLevelId(getServerFolderName(), levelWrapper.getDhIdentifier());
 			}
 			
 			// Allow API users to override the save folder
@@ -116,7 +123,7 @@ public class ClientOnlySaveStructure implements ISaveStructure
 			return this.getSaveFolder(levelWrapper);
 		}
 		
-		return getSaveFolderByLevelId(levelWrapper.getDimensionType().getName());
+		return getSaveFolderByLevelId(getServerFolderName(), levelWrapper.getDimensionType().getName());
 	}
 	
 	
@@ -173,11 +180,11 @@ public class ClientOnlySaveStructure implements ISaveStructure
 	}
 	
 	
-	private static File getSaveFolderByLevelId(String dimensionName)
+	private static File getSaveFolderByLevelId(String folderName, String dimensionName)
 	{
 		String path = MC_SHARED.getInstallationDirectory().getPath() + File.separatorChar
 				+ SERVER_DATA_FOLDER_NAME + File.separatorChar
-				+ getServerFolderName() + File.separatorChar
+				+ folderName + File.separatorChar
 				+ dimensionName.replaceAll(":", "@@");
 		
 		return new File(path);

core/src/main/java/com/seibel/distanthorizons/core/level/AbstractDhServerLevel.java

@@ -261,29 +261,27 @@ public abstract class AbstractDhServerLevel extends AbstractDhLevel implements I
 				}
 				
 				LodUtil.assertTrue(this.beaconBeamRepo != null, "beaconBeamRepo should not be null");
-				try (FullDataPayload payload = new FullDataPayload(data, this.beaconBeamRepo.getAllBeamsForPos(data.getPos())))
+				FullDataPayload payload = new FullDataPayload(data, this.beaconBeamRepo.getAllBeamsForPos(data.getPos()));
+				for (ServerPlayerState serverPlayerState : this.serverPlayerStateManager.getReadyPlayers())
 				{
-					for (ServerPlayerState serverPlayerState : this.serverPlayerStateManager.getReadyPlayers())
+					if (serverPlayerState.getServerPlayer().getLevel() != this.serverLevelWrapper)
 					{
-						if (serverPlayerState.getServerPlayer().getLevel() != this.serverLevelWrapper)
+						continue;
+					}
+					
+					if (!serverPlayerState.sessionConfig.isRealTimeUpdatesEnabled())
+					{
+						continue;
+					}
+					
+					Vec3d playerPosition = serverPlayerState.getServerPlayer().getPosition();
+					int distanceFromPlayer = DhSectionPos.getChebyshevSignedBlockDistance(data.getPos(), new DhBlockPos2D((int) playerPosition.x, (int) playerPosition.z)) / 16;
+					if (distanceFromPlayer <= serverPlayerState.sessionConfig.getMaxUpdateDistanceRadius())
+					{
+						serverPlayerState.fullDataPayloadSender.sendInChunks(payload, () ->
 						{
-							continue;
-						}
-						
-						if (!serverPlayerState.sessionConfig.isRealTimeUpdatesEnabled())
-						{
-							continue;
-						}
-						
-						Vec3d playerPosition = serverPlayerState.getServerPlayer().getPosition();
-						int distanceFromPlayer = DhSectionPos.getChebyshevSignedBlockDistance(data.getPos(), new DhBlockPos2D((int) playerPosition.x, (int) playerPosition.z)) / 16;
-						if (distanceFromPlayer <= serverPlayerState.sessionConfig.getMaxUpdateDistanceRadius())
-						{
-							serverPlayerState.fullDataPayloadSender.sendInChunks(payload, () ->
-							{
-								serverPlayerState.networkSession.sendMessage(new FullDataPartialUpdateMessage(this.serverLevelWrapper, payload));
-							});
-						}
+							serverPlayerState.networkSession.sendMessage(new FullDataPartialUpdateMessage(this.serverLevelWrapper, payload));
+						});
 					}
 				}
 			});

core/src/main/java/com/seibel/distanthorizons/core/level/DhClientLevel.java

@@ -164,7 +164,7 @@ public class DhClientLevel extends AbstractDhLevel implements IDhClientLevel
 			}
 			
 			
-			try(FullDataSourceV2DTO dataSourceDto = this.networkState.fullDataPayloadReceiver.decodeDataSourceAndReleaseBuffer(message.payload))
+			try (FullDataSourceV2DTO dataSourceDto = this.networkState.fullDataPayloadReceiver.decodeDataSource(message.payload))
 			{
 				boolean isSameLevel = message.isSameLevelAs(this.levelWrapper);
 				NETWORK_LOGGER.debug("Buffer {} isSameLevel: {}", message.payload.dtoBufferId, isSameLevel);
@@ -340,17 +340,7 @@ public class DhClientLevel extends AbstractDhLevel implements IDhClientLevel
 			return true;
 		}
 		
-		if (!this.networkState.sessionConfig.isLocalChunkUseAllowed())
-		{
-			return false;
-		}
-		
-		if (this.networkState.sessionConfig.isRealTimeUpdatesEnabled())
-		{
-			return this.loadedOnceChunks.add(chunkPos);
-		}
-		
-		return true;
+		return !this.networkState.sessionConfig.isRealTimeUpdatesEnabled() || this.loadedOnceChunks.add(chunkPos);
 	}
 	
 	

core/src/main/java/com/seibel/distanthorizons/core/level/IKeyedClientLevelManager.java

@@ -30,7 +30,7 @@ public interface IKeyedClientLevelManager extends IBindable
 {
 	IServerKeyedClientLevel getServerKeyedLevel();
 	/** Called when a client level is wrapped by a ServerEnhancedClientLevel, for integration into mod internals. */
-	IServerKeyedClientLevel setServerKeyedLevel(IClientLevelWrapper clientLevel, String levelKey);
+	IServerKeyedClientLevel setServerKeyedLevel(IClientLevelWrapper clientLevel, String serverKey, String levelKey);
 	
 	void clearKeyedLevel();
 	boolean isEnabled();

core/src/main/java/com/seibel/distanthorizons/core/level/IServerKeyedClientLevel.java

@@ -24,6 +24,9 @@ import com.seibel.distanthorizons.core.wrapperInterfaces.world.IClientLevelWrapp
 /** Enhances a {@link IClientLevelWrapper} with server provided level information. */
 public interface IServerKeyedClientLevel extends IClientLevelWrapper
 {
+	/** Returns the folder name the server wants the player to use. */
+	String getServerKey();
+	
 	/** Returns the level key, which is used to select the correct folder on the client. */
 	String getServerLevelKey();
 	

core/src/main/java/com/seibel/distanthorizons/core/multiplayer/client/AbstractFullDataNetworkRequestQueue.java

@@ -256,7 +256,7 @@ public abstract class AbstractFullDataNetworkRequestQueue implements IDebugRende
 				
 				if (response.payload != null)
 				{
-					FullDataSourceV2DTO dataSourceDto = this.networkState.fullDataPayloadReceiver.decodeDataSourceAndReleaseBuffer(response.payload);
+					FullDataSourceV2DTO dataSourceDto = this.networkState.fullDataPayloadReceiver.decodeDataSource(response.payload);
 					
 					// set application flags based on the received detail level,
 					// this is needed so the data sources propagate correctly

core/src/main/java/com/seibel/distanthorizons/core/multiplayer/config/SessionConfig.java

@@ -33,9 +33,9 @@ public class SessionConfig implements INetworkObject
 		
 		registerConfigEntry(Config.Common.WorldGenerator.enableDistantGeneration, Boolean::logicalAnd);
 		registerConfigEntry(Config.Server.maxGenerationRequestDistance, Math::min);
-		registerConfigEntry(Config.Server.generationBoundsX, (clientValue, serverValue) -> serverValue);
-		registerConfigEntry(Config.Server.generationBoundsZ, (clientValue, serverValue) -> serverValue);
-		registerConfigEntry(Config.Server.generationBoundsRadius, (clientValue, serverValue) -> serverValue);
+		registerConfigEntry(Config.Server.generationBoundsX, (x, y) -> y);
+		registerConfigEntry(Config.Server.generationBoundsZ, (x, y) -> y);
+		registerConfigEntry(Config.Server.generationBoundsRadius, (x, y) -> y);
 		registerConfigEntry(Config.Server.generationRequestRateLimit, Math::min);
 		
 		registerConfigEntry(Config.Server.enableRealTimeUpdates, Boolean::logicalAnd);
@@ -45,16 +45,15 @@ public class SessionConfig implements INetworkObject
 		registerConfigEntry(Config.Server.maxSyncOnLoadRequestDistance, Math::min);
 		registerConfigEntry(Config.Server.syncOnLoadRateLimit, Math::min);
 		
-		registerConfigEntry(Config.Server.allowLocalChunkUse, (clientValue, serverValue) -> serverValue);
-		registerConfigEntry(Config.Server.maxDataTransferSpeed, (clientValue, serverValue) -> {
-			if (clientValue == 0 && serverValue == 0)
+		registerConfigEntry(Config.Server.maxDataTransferSpeed, (x, y) -> {
+			if (x == 0 && y == 0)
 			{
 				return 0;
 			}
 			
 			return Math.min(
-					clientValue > 0 ? clientValue : Integer.MAX_VALUE,
-					serverValue > 0 ? serverValue : Integer.MAX_VALUE
+					x > 0 ? x : Integer.MAX_VALUE,
+					y > 0 ? y : Integer.MAX_VALUE
 			);
 		});
 	}
@@ -81,7 +80,6 @@ public class SessionConfig implements INetworkObject
 	public int getMaxSyncOnLoadDistance() { return this.getValue(Config.Server.maxSyncOnLoadRequestDistance); }
 	public int getSyncOnLoginRateLimit() { return this.getValue(Config.Server.syncOnLoadRateLimit); }
 	
-	public boolean isLocalChunkUseAllowed() { return this.getValue(Config.Server.allowLocalChunkUse); }
 	public int getMaxDataTransferSpeed() { return this.getValue(Config.Server.maxDataTransferSpeed); }
 	
 	

core/src/main/java/com/seibel/distanthorizons/core/multiplayer/fullData/FullDataPayload.java

@@ -9,18 +9,17 @@ import com.seibel.distanthorizons.core.network.messages.fullData.FullDataSplitMe
 import com.seibel.distanthorizons.core.sql.dto.BeaconBeamDTO;
 import com.seibel.distanthorizons.core.sql.dto.FullDataSourceV2DTO;
 import io.netty.buffer.ByteBuf;
-import io.netty.buffer.ByteBufAllocator;
+import io.netty.buffer.Unpooled;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.IOException;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicInteger;
-import java.util.function.Consumer;
 
 /**
  * @see FullDataSplitMessage
  */
-public class FullDataPayload implements INetworkObject, AutoCloseable
+public class FullDataPayload implements INetworkObject
 {
 	private static final AtomicInteger lastBufferId = new AtomicInteger();
 	
@@ -47,7 +46,7 @@ public class FullDataPayload implements INetworkObject, AutoCloseable
 			EDhApiDataCompressionMode compressionMode = Config.Common.LodBuilding.dataCompression.get();
 			try (FullDataSourceV2DTO dataSourceDto = FullDataSourceV2DTO.CreateFromDataSource(fullDataSource, compressionMode))
 			{
-				this.dtoBuffer = ByteBufAllocator.DEFAULT.buffer();
+				this.dtoBuffer = Unpooled.buffer();
 				dataSourceDto.encode(this.dtoBuffer);
 			}
 		}
@@ -85,12 +84,6 @@ public class FullDataPayload implements INetworkObject, AutoCloseable
 	// base overrides //
 	//================//
 	
-	@Override
-	public void close()
-	{
-		this.dtoBuffer.release();
-	}
-	
 	@Override
 	public String toString()
 	{

core/src/main/java/com/seibel/distanthorizons/core/multiplayer/fullData/FullDataPayloadReceiver.java

@@ -9,8 +9,8 @@ import com.seibel.distanthorizons.core.network.INetworkObject;
 import com.seibel.distanthorizons.core.network.messages.fullData.FullDataSplitMessage;
 import com.seibel.distanthorizons.core.sql.dto.FullDataSourceV2DTO;
 import com.seibel.distanthorizons.core.util.LodUtil;
-import io.netty.buffer.ByteBufAllocator;
 import io.netty.buffer.CompositeByteBuf;
+import io.netty.buffer.Unpooled;
 import org.apache.logging.log4j.LogManager;
 
 import java.util.Objects;
@@ -24,15 +24,7 @@ public class FullDataPayloadReceiver implements AutoCloseable
 	
 	private final ConcurrentMap<Integer, CompositeByteBuf> buffersById = CacheBuilder.newBuilder()
 			.expireAfterAccess(10, TimeUnit.SECONDS)
-			.removalListener((RemovalNotification<Integer, CompositeByteBuf> notification) ->
-			{
-				// If an entry was replaced without removing, the buffer has to be released manually
-				if (notification.getCause() != RemovalCause.REPLACED)
-				{
-					Objects.requireNonNull(notification.getValue()).release();
-				}
-			})
-			.build().asMap();
+			.<Integer, CompositeByteBuf>build().asMap();
 	
 	@Override
 	public void close()
@@ -46,13 +38,7 @@ public class FullDataPayloadReceiver implements AutoCloseable
 		{
 			if (message.isFirst)
 			{
-				if (composite != null)
-				{
-					composite.release();
-					LOGGER.debug("Released existing full data buffer [" + message.bufferId + "]");
-				}
-				
-				composite = ByteBufAllocator.DEFAULT.compositeBuffer();
+				composite = Unpooled.compositeBuffer();
 				LOGGER.debug("Created new full data buffer [" + message.bufferId + "]: [" + composite + "]");
 			}
 			else if (composite == null)
@@ -67,7 +53,7 @@ public class FullDataPayloadReceiver implements AutoCloseable
 		});
 	}
 	
-	public FullDataSourceV2DTO decodeDataSourceAndReleaseBuffer(FullDataPayload payload)
+	public FullDataSourceV2DTO decodeDataSource(FullDataPayload payload)
 	{
 		CompositeByteBuf compositeByteBuffer = this.buffersById.get(payload.dtoBufferId);
 		LodUtil.assertTrue(compositeByteBuffer != null);

core/src/main/java/com/seibel/distanthorizons/core/multiplayer/fullData/FullDataPayloadSender.java

@@ -38,12 +38,6 @@ public class FullDataPayloadSender implements AutoCloseable
 	public void close()
 	{
 		this.tickTimerTask.cancel();
-		
-		PendingTransfer pendingTransfer;
-		while ((pendingTransfer = this.transferQueue.poll()) != null)
-		{
-			pendingTransfer.close();
-		}
 	}
 	
 	
@@ -78,36 +72,25 @@ public class FullDataPayloadSender implements AutoCloseable
 			if (pendingTransfer.buffer.readableBytes() == 0)
 			{
 				pendingTransfer.sendFinalMessage.run();
-				pendingTransfer.close();
 				this.transferQueue.poll();
 			}
 		}
 	}
 	
 	
-	private static class PendingTransfer implements AutoCloseable
+	private static class PendingTransfer
 	{
 		public final int bufferId;
 		public final ByteBuf buffer;
 		public final Runnable sendFinalMessage;
-		private final AtomicBoolean isClosed = new AtomicBoolean();
 		
 		private PendingTransfer(FullDataPayload payload, Runnable sendFinalMessage)
 		{
 			this.bufferId = payload.dtoBufferId;
-			this.buffer = payload.dtoBuffer.retainedDuplicate().readerIndex(0);
+			this.buffer = payload.dtoBuffer.duplicate().readerIndex(0);
 			this.sendFinalMessage = sendFinalMessage;
 		}
 		
-		@Override
-		public void close()
-		{
-			if (this.isClosed.compareAndSet(false, true))
-			{
-				this.buffer.release();
-			}
-		}
-		
 	}
 	
 }

core/src/main/java/com/seibel/distanthorizons/core/multiplayer/server/FullDataSourceRequestHandler.java

@@ -119,16 +119,14 @@ public class FullDataSourceRequestHandler
 					}
 					
 					// send the found data source to client
-					try (FullDataPayload payload = new FullDataPayload(fullDataSource, this.getAllBeamsForPos(message.sectionPos)))
+					FullDataPayload payload = new FullDataPayload(fullDataSource, this.getAllBeamsForPos(message.sectionPos));
+					fullDataSource.close();
+					
+					serverPlayerState.fullDataPayloadSender.sendInChunks(payload, () ->
 					{
-						fullDataSource.close();
-						
-						serverPlayerState.fullDataPayloadSender.sendInChunks(payload, () ->
-						{
-							message.sendResponse(new FullDataSourceResponseMessage(payload));
-							rateLimiterSet.syncOnLoginRateLimiter.release();
-						});
-					}
+						message.sendResponse(new FullDataSourceResponseMessage(payload));
+						rateLimiterSet.syncOnLoginRateLimiter.release();
+					});
 				}
 				catch (Exception e)
 				{
@@ -245,19 +243,17 @@ public class FullDataSourceRequestHandler
 			}
 			CompletableFuture.runAsync(() ->
 			{
-				try (FullDataPayload payload = new FullDataPayload(requestGroup.fullDataSource, this.getAllBeamsForPos(entry.getKey())))
+				FullDataPayload payload = new FullDataPayload(requestGroup.fullDataSource, this.getAllBeamsForPos(entry.getKey()));
+				requestGroup.fullDataSource.close();
+				
+				for (DataSourceRequestGroup.RequestData requestData : requestGroup.requestMessages.values())
 				{
-					requestGroup.fullDataSource.close();
+					this.requestGroupsByFutureId.remove(requestData.futureId());
 					
-					for (DataSourceRequestGroup.RequestData requestData : requestGroup.requestMessages.values())
-					{
-						this.requestGroupsByFutureId.remove(requestData.futureId());
-						
-						requestData.serverPlayerState.fullDataPayloadSender.sendInChunks(payload, () -> {
-							requestData.message.sendResponse(new FullDataSourceResponseMessage(payload));
-							requestData.rateLimiterSet.generationRequestRateLimiter.release();
-						});
-					}
+					requestData.serverPlayerState.fullDataPayloadSender.sendInChunks(payload, () -> {
+						requestData.message.sendResponse(new FullDataSourceResponseMessage(payload));
+						requestData.rateLimiterSet.generationRequestRateLimiter.release();
+					});
 				}
 			}, executor);
 		}

core/src/main/java/com/seibel/distanthorizons/core/multiplayer/server/ServerPlayerState.java

@@ -27,6 +27,10 @@ public class ServerPlayerState implements Closeable
 	private final SessionConfig.AnyChangeListener configAnyChangeListener = new SessionConfig.AnyChangeListener(this::sendConfigMessage);
 	
 	
+	private final String serverKeyWithoutId = Config.Server.serverKey.get();
+	private final String serverKey = (this.serverKeyWithoutId.isEmpty() ? "" : Config.Server.serverId.get() + "_" + this.serverKeyWithoutId.trim())
+			.replaceAll("[^" + LevelInitMessage.PART_ALLOWED_CHARS_REGEX + " ]", "")
+			.replaceAll(" ", "_");
 	private String lastLevelKey = "";
 	
 	
@@ -89,7 +93,7 @@ public class ServerPlayerState implements Closeable
 			if (!levelKey.equals(this.lastLevelKey))
 			{
 				this.lastLevelKey = levelKey;
-				this.networkSession.sendMessage(new LevelInitMessage(levelKey));
+				this.networkSession.sendMessage(new LevelInitMessage(this.serverKey, levelKey));
 			}
 		}
 	}

core/src/main/java/com/seibel/distanthorizons/core/network/messages/base/LevelInitMessage.java

@@ -10,12 +10,18 @@ public class LevelInitMessage extends AbstractNetworkMessage
 	
 	public static final String PART_ALLOWED_CHARS_REGEX = "a-zA-Z0-9-_";
 	
+	// A plain string of characters
+	// 1-150 characters in total
+	public static final String SERVER_KEY_REGEX = String.format("^(?=.{1,%s}$)[%s]+$",
+			MAX_LENGTH, PART_ALLOWED_CHARS_REGEX);
+	
 	// prefix@namespace:path
 	// 1-150 characters in total, all parts except namespace can be omitted
-	public static final String VALIDATION_REGEX = String.format("^(?=.{1,%s}$)([%s]+@)?[%s]+(:[%s]+)?$",
+	public static final String LEVEL_KEY_REGEX = String.format("^(?=.{1,%s}$)([%s]+@)?[%s]+(:[%s]+)?$",
 			MAX_LENGTH, PART_ALLOWED_CHARS_REGEX, PART_ALLOWED_CHARS_REGEX, PART_ALLOWED_CHARS_REGEX);
 	
 	
+	public String serverKey;
 	public String levelKey;
 	public long serverTime;
 	
@@ -26,8 +32,9 @@ public class LevelInitMessage extends AbstractNetworkMessage
 	//==============//
 	
 	public LevelInitMessage() { }
-	public LevelInitMessage(String levelKey)
+	public LevelInitMessage(String serverKey, String levelKey)
 	{
+		this.serverKey = serverKey;
 		this.levelKey = levelKey;
 		this.serverTime = System.currentTimeMillis();
 	}
@@ -41,6 +48,7 @@ public class LevelInitMessage extends AbstractNetworkMessage
 	@Override
 	public void encode(ByteBuf out)
 	{
+		this.writeString(this.serverKey, out);
 		this.writeString(this.levelKey, out);
 		out.writeLong(this.serverTime);
 	}
@@ -48,6 +56,7 @@ public class LevelInitMessage extends AbstractNetworkMessage
 	@Override
 	public void decode(ByteBuf in)
 	{
+		this.serverKey = this.readString(in);
 		this.levelKey = this.readString(in);
 		this.serverTime = in.readLong();
 	}
@@ -62,6 +71,7 @@ public class LevelInitMessage extends AbstractNetworkMessage
 	public MoreObjects.ToStringHelper toStringHelper()
 	{
 		return super.toStringHelper()
+				.add("serverKey", this.serverKey)
 				.add("levelKey", this.levelKey)
 				.add("serverTime", this.serverTime);
 	}

core/src/main/java/com/seibel/distanthorizons/core/network/messages/fullData/FullDataSplitMessage.java

@@ -22,8 +22,8 @@ package com.seibel.distanthorizons.core.network.messages.fullData;
 import com.google.common.base.MoreObjects;
 import com.seibel.distanthorizons.core.multiplayer.fullData.FullDataPayload;
 import com.seibel.distanthorizons.core.network.messages.AbstractNetworkMessage;
-import com.seibel.distanthorizons.core.util.TimerUtil;
 import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
 
 import java.util.Timer;
 
@@ -34,16 +34,10 @@ import java.util.Timer;
  */
 public class FullDataSplitMessage extends AbstractNetworkMessage
 {
-	private static final long BUFFER_RELEASE_DELAY_MS = 5000L;
-	
 	public int bufferId;
 	public ByteBuf buffer;
 	public boolean isFirst;
 	
-	// Reference counting is unreliable here for some reason so this is a "fix"
-	private static final Timer bufferReleaseTimer = TimerUtil.CreateTimer("FullDataBufferCleanupTimer");
-	private boolean releaseScheduled = false;
-	
 	
 	//==============//
 	// constructors //
@@ -72,12 +66,6 @@ public class FullDataSplitMessage extends AbstractNetworkMessage
 		out.writeBytes(this.buffer.readerIndex(0));
 
 		out.writeBoolean(this.isFirst);
-		
-		if (!this.releaseScheduled)
-		{
-			bufferReleaseTimer.schedule(TimerUtil.createTimerTask(this.buffer::release), BUFFER_RELEASE_DELAY_MS);
-			this.releaseScheduled = true;
-		}
 	}
 	
 	@Override
@@ -86,7 +74,7 @@ public class FullDataSplitMessage extends AbstractNetworkMessage
 		this.bufferId = in.readInt();
 		
 		int bufferSize = in.readInt();
-		this.buffer = in.readBytes(bufferSize);
+		this.buffer = Unpooled.copiedBuffer(in.readSlice(bufferSize));
 
 		this.isFirst = in.readBoolean();
 	}