Replaced SocketChannel with Socket.

L2J_Mobius_01.0_Ertheia/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/Config.java

@@ -774,7 +774,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1369,7 +1368,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/GameServer.java

@@ -462,7 +462,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_02.5_Underground/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_02.5_Underground/java/org/l2jmobius/Config.java

@@ -785,7 +785,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1381,7 +1380,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_02.5_Underground/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_02.5_Underground/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_02.5_Underground/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_02.5_Underground/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_02.5_Underground/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_02.5_Underground/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/GameServer.java

@@ -470,7 +470,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_02.5_Underground/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_03.0_Helios/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_03.0_Helios/java/org/l2jmobius/Config.java

@@ -786,7 +786,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1394,7 +1393,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_03.0_Helios/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_03.0_Helios/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_03.0_Helios/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_03.0_Helios/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_03.0_Helios/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_03.0_Helios/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/GameServer.java

@@ -470,7 +470,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_03.0_Helios/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_04.0_GrandCrusade/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/Config.java

@@ -773,7 +773,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1381,7 +1380,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/GameServer.java

@@ -470,7 +470,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_05.0_Salvation/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/Config.java

@@ -772,7 +772,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1380,7 +1379,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/GameServer.java

@@ -474,7 +474,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_05.5_EtinasFate/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/Config.java

@@ -772,7 +772,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1387,7 +1386,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/GameServer.java

@@ -474,7 +474,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_06.0_Fafurion/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/Config.java

@@ -773,7 +773,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1408,7 +1407,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/GameServer.java

@@ -476,7 +476,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_07.0_PreludeOfWar/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/Config.java

@@ -779,7 +779,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1416,7 +1415,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/GameServer.java

@@ -482,7 +482,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_08.2_Homunculus/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/Config.java

@@ -770,7 +770,6 @@ public class Config
 	public static boolean PACKET_FLOOD_DROP;
 	public static boolean PACKET_FLOOD_LOGGED;
 	public static boolean TCP_NO_DELAY;
-	public static int CONNECTION_TIMEOUT;
 	public static boolean PACKET_ENCRYPTION;
 	public static boolean FAILED_DECRYPTION_LOGGED;
 	public static String DATABASE_DRIVER;
@@ -1407,7 +1406,6 @@ public class Config
 			PACKET_FLOOD_DROP = serverConfig.getBoolean("PacketFloodDrop", false);
 			PACKET_FLOOD_LOGGED = serverConfig.getBoolean("PacketFloodLogged", true);
 			TCP_NO_DELAY = serverConfig.getBoolean("TcpNoDelay", true);
-			CONNECTION_TIMEOUT = serverConfig.getInt("ConnectionTimeout", 800);
 			PACKET_ENCRYPTION = serverConfig.getBoolean("PacketEncryption", false);
 			FAILED_DECRYPTION_LOGGED = serverConfig.getBoolean("FailedDecryptionLogged", true);
 			REQUEST_ID = serverConfig.getInt("RequestServerID", 0);

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/commons/network/ExecuteThread.java

@@ -26,19 +26,15 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
 				// Iterate client pool.
 				ITERATE: for (E client : _pool)
 				{
-					if (client.getChannel() == null)
+					if (client.getSocket() == null)
 					{
 						_pool.remove(client);
 						continue ITERATE;
@@ -72,16 +68,12 @@ public class ExecuteThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/commons/network/NetClient.java

@@ -1,7 +1,8 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Logger;
@@ -15,27 +16,30 @@ public class NetClient
 	protected static final Logger LOGGER = Logger.getLogger(NetClient.class.getName());
 	
 	private String _ip;
-	private SocketChannel _channel;
+	private Socket _socket;
+	private InputStream _inputStream;
+	private OutputStream _outputStream;
 	private NetConfig _netConfig;
-	private Queue<byte[]> _pendingPacketData;
-	private ByteBuffer _pendingByteBuffer;
+	private Queue<byte[]> _packetData;
+	private byte[] _pendingData;
 	private int _pendingPacketSize;
 	
 	/**
 	 * Initialize the client.
-	 * @param channel
+	 * @param socket
 	 * @param netConfig
 	 */
-	public void init(SocketChannel channel, NetConfig netConfig)
+	public void init(Socket socket, NetConfig netConfig)
 	{
-		_channel = channel;
+		_socket = socket;
 		_netConfig = netConfig;
-		_pendingPacketData = new ConcurrentLinkedQueue<>();
+		_packetData = new ConcurrentLinkedQueue<>();
+		_ip = socket.getInetAddress().toString().substring(1); // Trim out /127.0.0.1
 		
 		try
 		{
-			_ip = _channel.getRemoteAddress().toString();
-			_ip = _ip.substring(1, _ip.lastIndexOf(':')); // Trim out /127.0.0.1:12345
+			_inputStream = _socket.getInputStream();
+			_outputStream = _socket.getOutputStream();
 		}
 		catch (Exception ignored)
 		{
@@ -64,26 +68,28 @@ public class NetClient
 	 */
 	public void disconnect()
 	{
-		if (_channel != null)
+		if (_socket != null)
 		{
 			try
 			{
-				_channel.close();
-				_channel = null;
+				_socket.close();
+				_socket = null;
+				_inputStream = null;
+				_outputStream = null;
 			}
 			catch (Exception ignored)
 			{
 			}
 		}
 		
-		if (_pendingPacketData != null)
+		if (_packetData != null)
 		{
-			_pendingPacketData.clear();
+			_packetData.clear();
 		}
 		
-		if (_pendingByteBuffer != null)
+		if (_pendingData != null)
 		{
-			_pendingByteBuffer = null;
+			_pendingData = null;
 		}
 	}
 	
@@ -94,7 +100,7 @@ public class NetClient
 	public void addPacketData(byte[] data)
 	{
 		// Check packet flooding.
-		final int size = _pendingPacketData.size();
+		final int size = _packetData.size();
 		if (size >= _netConfig.getPacketQueueLimit())
 		{
 			if (_netConfig.isPacketFloodDisconnect())
@@ -121,7 +127,7 @@ public class NetClient
 		}
 		
 		// Add to queue.
-		_pendingPacketData.add(data);
+		_packetData.add(data);
 	}
 	
 	/**
@@ -129,24 +135,24 @@ public class NetClient
 	 */
 	public Queue<byte[]> getPacketData()
 	{
-		return _pendingPacketData;
+		return _packetData;
 	}
 	
 	/**
-	 * @return the pending read ByteBuffer.
+	 * @return the pending read <b>byte[]</b>.
 	 */
-	public ByteBuffer getPendingByteBuffer()
+	public byte[] getPendingData()
 	{
-		return _pendingByteBuffer;
+		return _pendingData;
 	}
 	
 	/**
-	 * Set the pending read ByteBuffer.
-	 * @param pendingByteBuffer the pending read ByteBuffer.
+	 * Set the pending read <b>byte[]</b>.
+	 * @param pendingData the pending read <b>byte[]</b>.
 	 */
-	public void setPendingByteBuffer(ByteBuffer pendingByteBuffer)
+	public void setPendingData(byte[] pendingData)
 	{
-		_pendingByteBuffer = pendingByteBuffer;
+		_pendingData = pendingData;
 	}
 	
 	/**
@@ -166,6 +172,36 @@ public class NetClient
 		_pendingPacketSize = pendingPacketSize;
 	}
 	
+	/**
+	 * Sends a packet over the network using the default encryption.
+	 * @param packet The packet to send.
+	 */
+	public void sendPacket(WritablePacket packet)
+	{
+		if ((_socket == null) || !_socket.isConnected())
+		{
+			return;
+		}
+		
+		final byte[] sendableBytes = packet.getSendableBytes(getEncryption());
+		if (sendableBytes == null)
+		{
+			return;
+		}
+		
+		try
+		{
+			synchronized (this)
+			{
+				_outputStream.write(sendableBytes);
+				_outputStream.flush();
+			}
+		}
+		catch (Exception ignored)
+		{
+		}
+	}
+	
 	/**
 	 * @return the Encryption of this client.
 	 */
@@ -175,11 +211,27 @@ public class NetClient
 	}
 	
 	/**
-	 * @return the SocketChannel of this client.
+	 * @return the Socket of this client.
 	 */
-	public SocketChannel getChannel()
+	public Socket getSocket()
 	{
-		return _channel;
+		return _socket;
+	}
+	
+	/**
+	 * @return the InputStream of this client.
+	 */
+	public InputStream getInputStream()
+	{
+		return _inputStream;
+	}
+	
+	/**
+	 * @return the OutputStream of this client.
+	 */
+	public OutputStream getOutputStream()
+	{
+		return _outputStream;
 	}
 	
 	/**

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/commons/network/NetConfig.java

@@ -8,7 +8,6 @@ public class NetConfig
 {
 	private int _readPoolSize = 100;
 	private int _executePoolSize = 50;
-	private int _connectionTimeout = 800;
 	private int _packetQueueLimit = 80;
 	private boolean _packetFloodDisconnect = false;
 	private boolean _packetFloodDrop = false;
@@ -50,23 +49,6 @@ public class NetConfig
 		_executePoolSize = executePoolSize;
 	}
 	
-	/**
-	 * @return the timeout until a connection is established.
-	 */
-	public int getConnectionTimeout()
-	{
-		return _connectionTimeout;
-	}
-	
-	/**
-	 * Sets the timeout until a connection is established.
-	 * @param connectionTimeout
-	 */
-	public void setConnectionTimeout(int connectionTimeout)
-	{
-		_connectionTimeout = connectionTimeout;
-	}
-	
 	/**
 	 * @return the packet queue limit of receivable packets.
 	 */

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/commons/network/NetServer.java

@@ -1,8 +1,8 @@
 package org.l2jmobius.commons.network;
 
 import java.net.InetSocketAddress;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
+import java.net.ServerSocket;
+import java.net.Socket;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -105,30 +105,26 @@ public class NetServer<E extends NetClient>
 		public void run()
 		{
 			// Create server and bind port.
-			try (ServerSocketChannel server = ServerSocketChannel.open())
+			try (ServerSocket server = new ServerSocket())
 			{
+				server.setReuseAddress(true);
 				server.bind(new InetSocketAddress(_hostname, _port));
-				server.configureBlocking(false); // Non-blocking I/O.
+				server.setSoTimeout(0); // Non-blocking I/O.
 				
 				// Listen for new connections.
 				LOGGER.info(_name + ": Listening on port " + _port + " for incoming connections.");
-				long executionStart;
-				long currentTime;
 				while (true)
 				{
-					executionStart = System.currentTimeMillis();
-					
-					final SocketChannel channel = server.accept();
-					if (channel != null)
+					final Socket socket = server.accept();
+					if (socket != null)
 					{
 						// Configure channel.
-						channel.socket().setTcpNoDelay(_netConfig.isTcpNoDelay());
-						channel.socket().setSoTimeout(_netConfig.getConnectionTimeout());
-						channel.configureBlocking(false); // Non-blocking I/O.
+						socket.setTcpNoDelay(_netConfig.isTcpNoDelay());
+						socket.setSoTimeout(0); // Non-blocking I/O.
 						
 						// Create client.
 						final E client = _clientSupplier.get();
-						client.init(channel, _netConfig);
+						client.init(socket, _netConfig);
 						
 						// Add to read pool.
 						
@@ -190,11 +186,7 @@ public class NetServer<E extends NetClient>
 					}
 					
 					// Prevent high CPU caused by repeatedly polling the channel.
-					currentTime = System.currentTimeMillis();
-					if ((currentTime - executionStart) < 1)
-					{
-						Thread.sleep(1);
-					}
+					Thread.sleep(1);
 				}
 			}
 			catch (Exception e)

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/commons/network/ReadThread.java

@@ -1,8 +1,7 @@
 package org.l2jmobius.commons.network;
 
+import java.io.InputStream;
 import java.net.SocketTimeoutException;
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.util.Set;
 
 /**
@@ -12,9 +11,9 @@ import java.util.Set;
  */
 public class ReadThread<E extends NetClient> implements Runnable
 {
-	private final ByteBuffer _sizeBuffer = ByteBuffer.allocate(2); // Reusable size buffer.
-	private final ByteBuffer _pendingSizeBuffer = ByteBuffer.allocate(1); // Reusable pending size buffer.
 	private final Set<E> _pool;
+	private final byte[] _sizeBuffer = new byte[2]; // Reusable size buffer.
+	private final byte[] _pendingSizeBuffer = new byte[1]; // Reusable pending size buffer.
 	
 	public ReadThread(Set<E> pool)
 	{
@@ -24,12 +23,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 	@Override
 	public void run()
 	{
-		long executionStart;
-		long currentTime;
 		while (true)
 		{
-			executionStart = System.currentTimeMillis();
-			
 			// No need to iterate when pool is empty.
 			if (!_pool.isEmpty())
 			{
@@ -38,22 +33,29 @@ public class ReadThread<E extends NetClient> implements Runnable
 				{
 					try
 					{
-						final SocketChannel channel = client.getChannel();
-						if (channel == null) // Unexpected disconnection?
+						final InputStream inputStream = client.getInputStream();
+						if (inputStream == null) // Unexpected disconnection?
 						{
-							// Null SocketChannel: client
+							// Null InputStream: client
 							onDisconnection(client);
 							continue ITERATE;
 						}
 						
-						// Continue read if there is a pending ByteBuffer.
-						final ByteBuffer pendingByteBuffer = client.getPendingByteBuffer();
-						if (pendingByteBuffer != null)
+						// Continue when there are no bytes that can be read.
+						if (inputStream.available() < 1)
 						{
-							// Allocate an additional ByteBuffer based on pending packet size.
+							continue ITERATE;
+						}
+						
+						// Continue read if there is a pending byte array.
+						final byte[] pendingData = client.getPendingData();
+						if (pendingData != null)
+						{
+							// Allocate an additional byte array based on pending packet size.
 							final int pendingPacketSize = client.getPendingPacketSize();
-							final ByteBuffer additionalData = ByteBuffer.allocate(pendingPacketSize - pendingByteBuffer.position());
-							switch (channel.read(additionalData))
+							final byte[] additionalData = new byte[pendingPacketSize - pendingData.length];
+							final int bytesRead = inputStream.read(additionalData);
+							switch (bytesRead)
 							{
 								// Disconnected.
 								case -1:
@@ -70,15 +72,21 @@ public class ReadThread<E extends NetClient> implements Runnable
 								default:
 								{
 									// Merge additional read data.
-									pendingByteBuffer.put(pendingByteBuffer.position(), additionalData, 0, additionalData.position());
-									pendingByteBuffer.position(pendingByteBuffer.position() + additionalData.position());
+									final int currentSize = pendingData.length + bytesRead;
+									final byte[] mergedData = new byte[currentSize];
+									System.arraycopy(pendingData, 0, mergedData, 0, pendingData.length);
+									System.arraycopy(additionalData, 0, mergedData, pendingData.length, bytesRead);
 									
 									// Read was complete.
-									if (pendingByteBuffer.position() >= pendingPacketSize)
+									if (currentSize >= pendingPacketSize)
 									{
 										// Add packet data to client.
-										client.addPacketData(pendingByteBuffer.array());
-										client.setPendingByteBuffer(null);
+										client.addPacketData(mergedData);
+										client.setPendingData(null);
+									}
+									else
+									{
+										client.setPendingData(mergedData);
 									}
 								}
 							}
@@ -86,8 +94,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 						}
 						
 						// Read incoming packet size (short).
-						_sizeBuffer.clear();
-						switch (channel.read(_sizeBuffer))
+						boolean sizeRead = false;
+						switch (inputStream.read(_sizeBuffer))
 						{
 							// Disconnected.
 							case -1:
@@ -103,8 +111,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Need to read two bytes to calculate size.
 							case 1:
 							{
-								int attempt = 0; // Keep it under 10 attempts (100ms).
-								COMPLETE_SIZE_READ: while ((attempt++ < 10) && (_sizeBuffer.position() < 2))
+								// Keep it under 10 attempts (100ms).
+								COMPLETE_SIZE_READ: for (int attempt = 0; attempt < 10; attempt++)
 								{
 									// Wait for pending data.
 									try
@@ -116,8 +124,8 @@ public class ReadThread<E extends NetClient> implements Runnable
 									}
 									
 									// Try to read the missing extra byte.
-									_pendingSizeBuffer.clear();
-									switch (channel.read(_pendingSizeBuffer))
+									_pendingSizeBuffer[0] = 0;
+									switch (inputStream.read(_pendingSizeBuffer))
 									{
 										// Disconnected.
 										case -1:
@@ -133,14 +141,15 @@ public class ReadThread<E extends NetClient> implements Runnable
 										// Merge additional read byte.
 										default:
 										{
-											_sizeBuffer.put(1, _pendingSizeBuffer, 0, 1);
-											_sizeBuffer.position(2);
+											_sizeBuffer[1] = _pendingSizeBuffer[0];
+											sizeRead = true;
+											break COMPLETE_SIZE_READ;
 										}
 									}
 								}
 								
 								// Read failed.
-								if (_sizeBuffer.position() < 2)
+								if (!sizeRead)
 								{
 									onDisconnection(client);
 									continue ITERATE;
@@ -151,10 +160,11 @@ public class ReadThread<E extends NetClient> implements Runnable
 							// Read actual packet bytes.
 							default:
 							{
-								// Allocate a new ByteBuffer based on packet size read.
+								// Allocate a new byte array based on packet size read.
 								final int packetSize = calculatePacketSize();
-								final ByteBuffer packetByteBuffer = ByteBuffer.allocate(packetSize);
-								switch (channel.read(packetByteBuffer))
+								final byte[] packetData = new byte[packetSize];
+								final int bytesRead = inputStream.read(packetData);
+								switch (bytesRead)
 								{
 									// Disconnected.
 									case -1:
@@ -171,14 +181,16 @@ public class ReadThread<E extends NetClient> implements Runnable
 									default:
 									{
 										// Read was not complete.
-										if (packetByteBuffer.position() < packetSize)
+										if (bytesRead < packetSize)
 										{
-											client.setPendingByteBuffer(packetByteBuffer);
+											final byte[] pendindBytes = new byte[bytesRead];
+											System.arraycopy(packetData, 0, pendindBytes, 0, bytesRead);
+											client.setPendingData(pendindBytes);
 											client.setPendingPacketSize(packetSize);
 										}
 										else // Add packet data to client.
 										{
-											client.addPacketData(packetByteBuffer.array());
+											client.addPacketData(packetData);
 										}
 									}
 								}
@@ -197,24 +209,19 @@ public class ReadThread<E extends NetClient> implements Runnable
 			}
 			
 			// Prevent high CPU caused by repeatedly looping.
-			currentTime = System.currentTimeMillis();
-			if ((currentTime - executionStart) < 1)
+			try
+			{
+				Thread.sleep(1);
+			}
+			catch (Exception ignored)
 			{
-				try
-				{
-					Thread.sleep(1);
-				}
-				catch (Exception ignored)
-				{
-				}
 			}
 		}
 	}
 	
 	private int calculatePacketSize()
 	{
-		_sizeBuffer.rewind();
-		return ((_sizeBuffer.get() & 0xff) | ((_sizeBuffer.get() << 8) & 0xffff)) - 2;
+		return ((_sizeBuffer[0] & 0xff) | ((_sizeBuffer[1] << 8) & 0xffff)) - 2;
 	}
 	
 	private void onDisconnection(E client)

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/commons/network/WritablePacket.java

@@ -1,6 +1,5 @@
 package org.l2jmobius.commons.network;
 
-import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
@@ -13,7 +12,6 @@ public abstract class WritablePacket
 {
 	private byte[] _data;
 	private byte[] _sendableBytes;
-	private ByteBuffer _byteBuffer;
 	private int _position = 2; // Allocate space for size (max length 65535 - size header).
 	
 	/**
@@ -270,38 +268,6 @@ public abstract class WritablePacket
 		return _sendableBytes;
 	}
 	
-	/**
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public ByteBuffer getSendableByteBuffer()
-	{
-		return getSendableByteBuffer(null);
-	}
-	
-	/**
-	 * @param encryption if EncryptionInterface is used.
-	 * @return ByteBuffer of the sendable packet data, including a size header.
-	 */
-	public synchronized ByteBuffer getSendableByteBuffer(EncryptionInterface encryption)
-	{
-		// Generate sendable ByteBuffer.
-		if ((_byteBuffer == null /* Not processed */) || (encryption != null /* Encryption can change */))
-		{
-			final byte[] bytes = getSendableBytes(encryption);
-			if (bytes != null) // Data was actually written.
-			{
-				_byteBuffer = ByteBuffer.wrap(bytes);
-			}
-		}
-		else // Rewind the buffer.
-		{
-			_byteBuffer.rewind();
-		}
-		
-		// Return the buffer.
-		return _byteBuffer;
-	}
-	
 	/**
 	 * Take in consideration that data must be written first.
 	 * @return The length of the data (includes size header).

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/GameServer.java

@@ -486,7 +486,6 @@ public class GameServer
 		server.getNetConfig().setPacketFloodDrop(Config.PACKET_FLOOD_DROP);
 		server.getNetConfig().setPacketFloodLogged(Config.PACKET_FLOOD_LOGGED);
 		server.getNetConfig().setTcpNoDelay(Config.TCP_NO_DELAY);
-		server.getNetConfig().setConnectionTimeout(Config.CONNECTION_TIMEOUT);
 		server.getNetConfig().setFailedDecryptionLogged(Config.FAILED_DECRYPTION_LOGGED);
 		server.start();
 		

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/network/GameClient.java

@@ -16,8 +16,6 @@
  */
 package org.l2jmobius.gameserver.network;
 
-import java.nio.ByteBuffer;
-import java.nio.channels.SocketChannel;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -224,30 +222,11 @@ public class GameClient extends NetClient
 		_pendingPackets.add(packet);
 		synchronized (_pendingPackets)
 		{
-			final SocketChannel channel = getChannel();
-			if ((channel != null) && channel.isConnected())
-			{
-				final ServerPacket sendPacket = _pendingPackets.poll();
-				final ByteBuffer byteBuffer = sendPacket.getSendableByteBuffer(_encryption);
-				if (byteBuffer != null)
-				{
-					// Send the packet data.
-					try
-					{
-						// Loop while there are remaining bytes in the buffer.
-						while (byteBuffer.hasRemaining())
-						{
-							channel.write(byteBuffer);
-						}
-					}
-					catch (Exception ignored)
-					{
-					}
-					
-					// Run packet implementation.
-					sendPacket.run(_player);
-				}
-			}
+			// Send the packet data.
+			super.sendPacket(packet);
+			
+			// Run packet implementation.
+			packet.run(_player);
 		}
 	}
 	

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/loginserver/network/LoginClient.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.loginserver.network;
 
+import java.io.OutputStream;
+import java.net.Socket;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -145,20 +147,26 @@ public class LoginClient extends NetClient
 		return _connectionStartTime;
 	}
 	
+	@Override
 	public void sendPacket(WritablePacket packet)
 	{
-		if ((packet == null))
-		{
-			return;
-		}
-		
-		// Write into the channel.
-		if ((getChannel() != null) && getChannel().isConnected())
+		final Socket socket = getSocket();
+		if ((socket != null) && socket.isConnected())
 		{
+			final byte[] sendableBytes = packet.getSendableBytes();
+			if (sendableBytes == null)
+			{
+				return;
+			}
+			
 			try
 			{
-				// Send the packet data.
-				getChannel().write(packet.getSendableByteBuffer());
+				final OutputStream outputStream = getOutputStream();
+				synchronized (this)
+				{
+					outputStream.write(sendableBytes);
+					outputStream.flush();
+				}
 			}
 			catch (Exception ignored)
 			{

L2J_Mobius_09.2_ReturnOfTheQueenAnt/dist/game/config/Server.ini

@@ -63,10 +63,6 @@ PacketFloodLogged = True
 # Default: True (disabled)
 TcpNoDelay = True
 
-# Connection timeout in milliseconds.
-# Default 800
-ConnectionTimeout = 800
-
 # Packet encryption.
 # By default packets sent or received are encrypted using the Blowfish algorithm.
 # Disabling this reduces the resources needed to process any packets transfered,