Push current additions to Worms 2 server with test proxy.

src/tool/Syroot.Worms.Worms2.GameServer/Nation.cs

@@ -0,0 +1,113 @@
+namespace Syroot.Worms.Worms2.GameServer
+{
+    /// <summary>
+    /// Represents the flag sent with in a <see cref="SessionInfo"/>.
+    /// </summary>
+    /// <remarks>Names are in ISO 3166 Alpha-2 notation.</remarks>
+    public enum Nation : byte
+    {
+        None,
+        /// <summary>United Kingdom</summary>
+        UK,
+        /// <summary>Argentinia</summary>
+        AR,
+        /// <summary>Australia</summary>
+        AU,
+        /// <summary>Austria</summary>
+        AT,
+        /// <summary>Beglium</summary>
+        BE,
+        /// <summary>Brazil</summary>
+        BR,
+        /// <summary>Canada</summary>
+        CA,
+        /// <summary>Croatia</summary>
+        HR,
+        /// <summary>Bosnia and Herzegovina (old flag)</summary>
+        BA,
+        /// <summary>Cyprus</summary>
+        CY,
+        /// <summary>Czech Republic</summary>
+        CZ,
+        /// <summary>Denmark</summary>
+        DK,
+        /// <summary>Finland</summary>
+        FI,
+        /// <summary>France</summary>
+        FR,
+        /// <summary>Georgia</summary>
+        GE,
+        /// <summary>Germany</summary>
+        DE,
+        /// <summary>Greece</summary>
+        GR,
+        /// <summary>Hong Kong SAR</summary>
+        HK,
+        /// <summary>Hungary</summary>
+        HU,
+        /// <summary>Iceland</summary>
+        IS,
+        /// <summary>India</summary>
+        IN,
+        /// <summary>Indonesia</summary>
+        ID,
+        /// <summary>Iran</summary>
+        IR,
+        /// <summary>Iraq</summary>
+        IQ,
+        /// <summary>Ireland</summary>
+        IE,
+        /// <summary>Israel</summary>
+        IL,
+        /// <summary>Italy</summary>
+        IT,
+        /// <summary>Japan</summary>
+        JP,
+        /// <summary>Liechtenstein</summary>
+        LI,
+        /// <summary>Luxembourg</summary>
+        LU,
+        /// <summary>Malaysia</summary>
+        MY,
+        /// <summary>Malta</summary>
+        MT,
+        /// <summary>Mexico</summary>
+        MX,
+        /// <summary>Morocco</summary>
+        MA,
+        /// <summary>Netherlands</summary>
+        NL,
+        /// <summary>New Zealand</summary>
+        NZ,
+        /// <summary>Norway</summary>
+        NO,
+        /// <summary>Poland</summary>
+        PL,
+        /// <summary>Portugal</summary>
+        PT,
+        /// <summary>Puerto Rico</summary>
+        PR,
+        /// <summary>Romania</summary>
+        RO,
+        /// <summary>Russian Federation</summary>
+        RU,
+        /// <summary>Singapore</summary>
+        SG,
+        /// <summary>South Africa</summary>
+        ZA,
+        /// <summary>Spain</summary>
+        ES,
+        /// <summary>Sweden</summary>
+        SE,
+        /// <summary>Switzerland</summary>
+        CH,
+        /// <summary>Turkey</summary>
+        TR,
+        /// <summary>United States</summary>
+        US,
+        /// <summary>Custom skull flag</summary>
+        Skull,
+        /// <summary>Custom Team17 flag</summary>
+        Team17
+    }
+}

src/tool/Syroot.Worms.Worms2.GameServer/Packet.cs

@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Text;
 using System.Threading.Tasks;
 using Syroot.BinaryData;
 using Syroot.Worms.IO;
@@ -8,88 +9,187 @@ namespace Syroot.Worms.Worms2.GameServer
 {
     internal class Packet
     {
-        // ---- FIELDS -------------------------------------------------------------------------------------------------
+        // ---- CONSTRUCTORS & DESTRUCTOR ------------------------------------------------------------------------------
 
-        internal int Value10;
-        internal PacketCode Code;
-        internal PacketFlags Flags;
-        internal int Value4;
-        internal int Value0;
-        internal int Value3;
-        internal int Value1;
-        internal int Value2;
-        internal int Value7;
-        internal string String20 = String.Empty;
-        internal string String50 = String.Empty;
-        internal byte[] Data = Array.Empty<byte>();
+        internal Packet() { }
+
+        internal Packet(PacketCode code,
+            int? value0 = null, int? value1 = null, int? value2 = null, int? value3 = null, int? value4 = null,
+            int? value10 = null, byte[]? data = null, int? error = null,
+            string? name = null, SessionInfo? session = null)
+        {
+            Code = code;
+            Value0 = value0;
+            Value1 = value1;
+            Value2 = value2;
+            Value3 = value3;
+            Value4 = value4;
+            Value10 = value10;
+            Data = data;
+            Error = error;
+            Name = name;
+            Session = session;
+        }
+
+        // ---- PROPERTIES ---------------------------------------------------------------------------------------------
+
+        internal PacketCode Code { get; set; }
+        internal int? Value0 { get; set; }
+        internal int? Value1 { get; set; }
+        internal int? Value2 { get; set; }
+        internal int? Value3 { get; set; }
+        internal int? Value4 { get; set; }
+        internal int? Value10 { get; set; }
+        internal byte[]? Data { get; set; }
+        internal int? Error { get; set; }
+        internal string? Name { get; set; }
+        internal SessionInfo? Session { get; set; }
+
+        // ---- METHODS (PUBLIC) ---------------------------------------------------------------------------------------
+
+        /// <inheritdoc/>
+        public override string ToString()
+        {
+            StringBuilder sb = new StringBuilder();
+
+            sb.AppendLine($"{Code:D} {Code}");
+            if (Value0.HasValue) sb.AppendLine($"{nameof(Value0)} = {Value0:X8}");
+            if (Value1.HasValue) sb.AppendLine($"{nameof(Value1)} = {Value1:X8}");
+            if (Value2.HasValue) sb.AppendLine($"{nameof(Value2)} = {Value2:X8}");
+            if (Value3.HasValue) sb.AppendLine($"{nameof(Value3)} = {Value3:X8}");
+            if (Value4.HasValue) sb.AppendLine($"{nameof(Value4)} = {Value4:X8}");
+            if (Value10.HasValue) sb.AppendLine($"{nameof(Value10)} = {Value10:X8}");
+            if (Data != null)
+            {
+                sb.Append($"{nameof(Data)}[{Data.Length}] = ");
+                foreach (byte b in Data)
+                    sb.Append($"{b:X2} ");
+                sb.AppendLine();
+            }
+            if (Error.HasValue) sb.AppendLine($"{nameof(Error)} = {Error:X8}");
+            if (Name != null) sb.AppendLine($"{nameof(Name)} = {Name}");
+            if (Session.HasValue) sb.AppendLine($"{nameof(Session)} = {Session}");
+
+            return sb.ToString();
+        }
 
         // ---- METHODS (INTERNAL) -------------------------------------------------------------------------------------
 
+        internal void Receive(Stream stream)
+        {
+            int dataLength = 0;
+            Code = (PacketCode)stream.ReadInt32();
+            Flags flags = (Flags)stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasValue0)) Value0 = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasValue1)) Value1 = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasValue2)) Value2 = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasValue3)) Value3 = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasValue4)) Value4 = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasValue10)) Value10 = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasDataLength)) dataLength = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasData) && dataLength != 0) Data = stream.ReadBytes(dataLength);
+            if (flags.HasFlag(Flags.HasError)) Error = stream.ReadInt32();
+            if (flags.HasFlag(Flags.HasUserName)) Name = stream.ReadFixedString(20);
+            if (flags.HasFlag(Flags.HasUserInfo)) Session = stream.ReadStruct<SessionInfo>();
+        }
+
         internal async Task ReceiveAsync(Stream stream)
         {
             int dataLength = 0;
             Code = (PacketCode)await stream.ReadInt32Async();
-            Flags = (PacketFlags)await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasValue0)) Value0 = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasValue1)) Value1 = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasValue2)) Value2 = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasValue3)) Value3 = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasValue4)) Value4 = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasValue10)) Value10 = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasDataLength)) dataLength = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasData) && dataLength != 0) Data = await stream.ReadBytesAsync(dataLength);
-            if (Flags.HasFlag(PacketFlags.HasValue7)) Value7 = await stream.ReadInt32Async();
-            if (Flags.HasFlag(PacketFlags.HasString20)) String20 = await stream.ReadFixedStringAsync(20);
-            if (Flags.HasFlag(PacketFlags.HasString50)) String50 = await stream.ReadFixedStringAsync(50);
+            Flags flags = (Flags)await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasValue0)) Value0 = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasValue1)) Value1 = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasValue2)) Value2 = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasValue3)) Value3 = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasValue4)) Value4 = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasValue10)) Value10 = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasDataLength)) dataLength = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasData) && dataLength != 0) Data = await stream.ReadBytesAsync(dataLength);
+            if (flags.HasFlag(Flags.HasError)) Error = await stream.ReadInt32Async();
+            if (flags.HasFlag(Flags.HasUserName)) Name = await stream.ReadFixedStringAsync(20);
+            if (flags.HasFlag(Flags.HasUserInfo)) Session = stream.ReadStruct<SessionInfo>();
+        }
+
+        internal void Send(Stream stream)
+        {
+            stream.WriteInt32((int)Code);
+            stream.WriteInt32((int)GetFlags());
+            if (Value0.HasValue) stream.WriteInt32(Value0.Value);
+            if (Value1.HasValue) stream.WriteInt32(Value1.Value);
+            if (Value2.HasValue) stream.WriteInt32(Value2.Value);
+            if (Value3.HasValue) stream.WriteInt32(Value3.Value);
+            if (Value4.HasValue) stream.WriteInt32(Value4.Value);
+            if (Value10.HasValue) stream.WriteInt32(Value10.Value);
+            if (Data != null)
+            {
+                stream.WriteInt32(Data.Length);
+                stream.WriteBytes(Data);
+            }
+            if (Error.HasValue) stream.WriteInt32(Error.Value);
+            if (Name != null) stream.WriteFixedString(Name, 20);
+            if (Session.HasValue) stream.WriteStruct(Session.Value);
         }
 
         internal async Task SendAsync(Stream stream)
         {
             await stream.WriteInt32Async((int)Code);
-            await stream.WriteInt32Async((int)Flags);
-            if (Flags.HasFlag(PacketFlags.HasValue0)) await stream.WriteInt32Async(Value0);
-            if (Flags.HasFlag(PacketFlags.HasValue1)) await stream.WriteInt32Async(Value1);
-            if (Flags.HasFlag(PacketFlags.HasValue2)) await stream.WriteInt32Async(Value2);
-            if (Flags.HasFlag(PacketFlags.HasValue3)) await stream.WriteInt32Async(Value3);
-            if (Flags.HasFlag(PacketFlags.HasValue4)) await stream.WriteInt32Async(Value4);
-            if (Flags.HasFlag(PacketFlags.HasValue10)) await stream.WriteInt32Async(Value10);
-            if (Flags.HasFlag(PacketFlags.HasDataLength)) await stream.WriteInt32Async(Data.Length);
-            if (Flags.HasFlag(PacketFlags.HasData) && Data.Length != 0) await stream.WriteBytesAsync(Data);
-            if (Flags.HasFlag(PacketFlags.HasValue7)) await stream.WriteInt32Async(Value7);
-            if (Flags.HasFlag(PacketFlags.HasString20)) await stream.WriteFixedStringAsync(String20, 20);
-            if (Flags.HasFlag(PacketFlags.HasString50)) await stream.WriteFixedStringAsync(String50, 50);
+            await stream.WriteInt32Async((int)GetFlags());
+            if (Value0.HasValue) await stream.WriteInt32Async(Value0.Value);
+            if (Value1.HasValue) await stream.WriteInt32Async(Value1.Value);
+            if (Value2.HasValue) await stream.WriteInt32Async(Value2.Value);
+            if (Value3.HasValue) await stream.WriteInt32Async(Value3.Value);
+            if (Value4.HasValue) await stream.WriteInt32Async(Value4.Value);
+            if (Value10.HasValue) await stream.WriteInt32Async(Value10.Value);
+            if (Data != null)
+            {
+                await stream.WriteInt32Async(Data.Length);
+                await stream.WriteBytesAsync(Data);
+            }
+            if (Error.HasValue) await stream.WriteInt32Async(Error.Value);
+            if (Name != null) await stream.WriteFixedStringAsync(Name, 20);
+            if (Session.HasValue) stream.WriteStruct(Session.Value);
+        }
+
+        // ---- METHODS (PRIVATE) --------------------------------------------------------------------------------------
+
+        private Flags GetFlags()
+        {
+            Flags flags = Flags.None;
+            if (Value0.HasValue) flags |= Flags.HasValue0;
+            if (Value1.HasValue) flags |= Flags.HasValue1;
+            if (Value2.HasValue) flags |= Flags.HasValue2;
+            if (Value3.HasValue) flags |= Flags.HasValue3;
+            if (Value4.HasValue) flags |= Flags.HasValue4;
+            if (Value10.HasValue) flags |= Flags.HasValue10;
+            if (Data != null)
+            {
+                flags |= Flags.HasDataLength;
+                flags |= Flags.HasData;
+            }
+            if (Error.HasValue) flags |= Flags.HasError;
+            if (Name != null) flags |= Flags.HasUserName;
+            if (Session.HasValue) flags |= Flags.HasUserInfo;
+            return flags;
+        }
+
+        // ---- CLASSES, STRUCTS & ENUMS -------------------------------------------------------------------------------
+
+        [Flags]
+        private enum Flags : int
+        {
+            None,
+            HasValue0 = 1 << 0,
+            HasValue1 = 1 << 1,
+            HasValue2 = 1 << 2,
+            HasValue3 = 1 << 3,
+            HasValue4 = 1 << 4,
+            HasValue10 = 1 << 10,
+            HasDataLength = 1 << 5,
+            HasData = 1 << 6,
+            HasError = 1 << 7,
+            HasUserName = 1 << 8,
+            HasUserInfo = 1 << 9
         }
     }
-
-    /// <summary>
-    /// Represents the description of the packet contents, as seen from client-side (thus a "reply" comes from the
-    /// server).
-    /// </summary>
-    internal enum PacketCode : int
-    {
-        Login = 600,
-        LoginReply = 601,
-        CreateRoom = 700,
-        CreateRoomReply = 701
-    }
-
-    /// <summary>
-    /// Represents which <see cref="Packet"/> fields are available, as specified at the start of each.
-    /// </summary>
-    [Flags]
-    internal enum PacketFlags
-    {
-        None,
-        HasValue0 = 1 << 0,
-        HasValue1 = 1 << 1,
-        HasValue2 = 1 << 2,
-        HasValue3 = 1 << 3,
-        HasValue4 = 1 << 4,
-        HasValue10 = 1 << 10,
-        HasDataLength = 1 << 5,
-        HasData = 1 << 6,
-        HasValue7 = 1 << 7,
-        HasString20 = 1 << 8,
-        HasString50 = 1 << 9
-    }
 }

src/tool/Syroot.Worms.Worms2.GameServer/PacketCode.cs

@@ -0,0 +1,30 @@
+namespace Syroot.Worms.Worms2.GameServer
+{
+    /// <summary>
+    /// Represents the description of the packet contents, as seen from client-side (thus a "reply" comes from the
+    /// server).
+    /// </summary>
+    internal enum PacketCode : int
+    {
+        ListRooms = 200,
+        ListItem = 350,
+        ListEnd = 351,
+        ListUsers = 400,
+        ListGames = 500,
+        Login = 600,
+        LoginReply = 601,
+        CreateRoom = 700,
+        CreateRoomReply = 701,
+        Join = 800,
+        JoinReply = 801,
+        LeaveRoom = 900,
+        LeaveRoomReply = 901,
+        LeaveRoom2 = 1100,
+        LeaveRoomReply2 = 1101,
+        CreateGame = 1200,
+        CreateGameReply = 1201,
+        ChatRoom = 1300,
+        ChatRoomReply = 1301,
+        JoinGame = 1326,
+    }
+}

src/tool/Syroot.Worms.Worms2.GameServer/PacketConnection.cs

@@ -0,0 +1,87 @@
+using System.IO;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Syroot.Worms.Worms2.GameServer
+{
+    internal class PacketConnection
+    {
+        // ---- FIELDS -------------------------------------------------------------------------------------------------
+
+        private readonly Stream _stream;
+        private readonly SemaphoreSlim _recvSemaphore = new SemaphoreSlim(1, 1);
+        private readonly SemaphoreSlim _sendSemaphore = new SemaphoreSlim(1, 1);
+
+        // ---- CONSTRUCTORS & DESTRUCTOR ------------------------------------------------------------------------------
+
+        internal PacketConnection(TcpClient tcpClient)
+        {
+            _stream = tcpClient.GetStream();
+            RemoteEndPoint = (IPEndPoint)tcpClient.Client.RemoteEndPoint;
+        }
+
+        // ---- PROPERTIES ---------------------------------------------------------------------------------------------
+
+        internal IPEndPoint RemoteEndPoint { get; }
+
+        // ---- METHODS (INTERNAL) -------------------------------------------------------------------------------------
+
+        internal Packet Receive()
+        {
+            _recvSemaphore.Wait();
+            try
+            {
+                Packet packet = new Packet();
+                packet.Receive(_stream);
+                return packet;
+            }
+            finally
+            {
+                _recvSemaphore.Release();
+            }
+        }
+
+        internal async Task<Packet> ReceiveAsync()
+        {
+            await _recvSemaphore.WaitAsync();
+            try
+            {
+                Packet packet = new Packet();
+                await packet.ReceiveAsync(_stream);
+                return packet;
+            }
+            finally
+            {
+                _recvSemaphore.Release();
+            }
+        }
+
+        internal void Send(Packet packet)
+        {
+            _sendSemaphore.Wait();
+            try
+            {
+                packet.Send(_stream);
+            }
+            finally
+            {
+                _sendSemaphore.Release();
+            }
+        }
+
+        internal async Task SendAsync(Packet packet)
+        {
+            await _sendSemaphore.WaitAsync();
+            try
+            {
+                await packet.SendAsync(_stream);
+            }
+            finally
+            {
+                _sendSemaphore.Release();
+            }
+        }
+    }
+}

src/tool/Syroot.Worms.Worms2.GameServer/Program.cs

@@ -1,88 +1,18 @@
-using System;
-using System.IO;
-using System.Net;
-using System.Net.Sockets;
-using System.Text;
-using System.Threading.Tasks;
+using System.Net;
 
 namespace Syroot.Worms.Worms2.GameServer
 {
     internal class Program
     {
-        // ---- FIELDS -------------------------------------------------------------------------------------------------
-
-        private static readonly object _logLock = new object();
-
         // ---- METHODS (PRIVATE) --------------------------------------------------------------------------------------
 
-        private static async Task Main(string[] args)
+        private static void Main()
         {
-            IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Any, 17000);
-            TcpListener listener = new TcpListener(serverEndPoint);
-            listener.Start();
-            Console.WriteLine($"Listening under {serverEndPoint}...");
+            Proxy.Start();
+            return;
 
-            TcpClient? client;
-            while ((client = await listener.AcceptTcpClientAsync()) != null)
-            {
-                _ = HandleClient(client);
-            }
-        }
-
-        private static async Task HandleClient(TcpClient client)
-        {
-            IPEndPoint clientEndPoint = (IPEndPoint)client.Client.RemoteEndPoint;
-            Stream stream = client.GetStream();
-
-            Packet query = new Packet();
-            while (true)
-            {
-                // Receive query.
-                await query.ReceiveAsync(stream);
-                LogPacket(query, true, clientEndPoint);
-
-                // Send reply.
-                switch (query.Code)
-                {
-                    case PacketCode.Login:
-                        query.Code = PacketCode.LoginReply;
-                        break;
-                    case PacketCode.CreateRoom:
-                        break;
-                }
-                LogPacket(query, false, clientEndPoint);
-                await query.SendAsync(stream);
-            }
-        }
-
-        private static void LogPacket(Packet packet, bool received, IPEndPoint endPoint)
-        {
-            static string arrayToString(byte[] array)
-            {
-                StringBuilder sb = new StringBuilder();
-                foreach (byte b in array)
-                    sb.Append($"{b:X2} ");
-                return sb.ToString();
-            }
-
-            lock (_logLock) // if I'd only get laid for lines like this
-            {
-                ConsoleColor prevColor = Console.ForegroundColor;
-                Console.ForegroundColor = received ? ConsoleColor.Cyan : ConsoleColor.Magenta;
-                Console.WriteLine($"{endPoint} {(received ? ">>" : "<<")} {packet.Code}");
-                if (packet.Flags.HasFlag(PacketFlags.HasValue0)) Console.WriteLine($"  Value0 = {packet.Value0:X8}");
-                if (packet.Flags.HasFlag(PacketFlags.HasValue1)) Console.WriteLine($"  Value1 = {packet.Value1:X8}");
-                if (packet.Flags.HasFlag(PacketFlags.HasValue2)) Console.WriteLine($"  Value2 = {packet.Value2:X8}");
-                if (packet.Flags.HasFlag(PacketFlags.HasValue3)) Console.WriteLine($"  Value3 = {packet.Value3:X8}");
-                if (packet.Flags.HasFlag(PacketFlags.HasValue4)) Console.WriteLine($"  Value4 = {packet.Value4:X8}");
-                if (packet.Flags.HasFlag(PacketFlags.HasValue10)) Console.WriteLine($"  Value10 = {packet.Value10:X8}");
-                if (packet.Flags.HasFlag(PacketFlags.HasDataLength)) Console.WriteLine($"  DataLength = {packet.Data.Length}");
-                if (packet.Flags.HasFlag(PacketFlags.HasData)) Console.WriteLine($"  Data = {arrayToString(packet.Data)}");
-                if (packet.Flags.HasFlag(PacketFlags.HasValue7)) Console.WriteLine($"  Value7 = {packet.Value7:X8}");
-                if (packet.Flags.HasFlag(PacketFlags.HasString20)) Console.WriteLine($"  String20 = {packet.String20}");
-                if (packet.Flags.HasFlag(PacketFlags.HasString50)) Console.WriteLine($"  String50 = {packet.String50}");
-                Console.ForegroundColor = prevColor;
-            }
+            Server server = new Server(new IPEndPoint(IPAddress.Any, 17000));
+            server.Run();
         }
     }
 }

src/tool/Syroot.Worms.Worms2.GameServer/Proxy.cs

@@ -0,0 +1,49 @@
+using System.Drawing;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading.Tasks;
+using Syroot.ColoredConsole;
+
+namespace Syroot.Worms.Worms2.GameServer
+{
+    internal class Proxy
+    {
+        // ---- METHODS (INTERNAL) -------------------------------------------------------------------------------------
+
+        internal static void Start()
+        {
+            // Start listening for clients to intercept.
+            IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 17000);
+            TcpListener listener = new TcpListener(localEndPoint);
+            listener.Start();
+            ColorConsole.WriteLine($"Listening under {localEndPoint}...");
+
+            TcpClient? client;
+            while ((client = listener.AcceptTcpClient()) != null)
+            {
+                // Connect to server.
+                TcpClient server = new TcpClient();
+                server.Connect("uk1.servers.worms2.com", 17171);
+
+                PacketConnection clientConnection = new PacketConnection(client);
+                PacketConnection serverConnection = new PacketConnection(server);
+
+                Task.Run(() => Forward(clientConnection, serverConnection, true));
+                Task.Run(() => Forward(serverConnection, clientConnection, false));
+            }
+        }
+
+        private static void Forward(PacketConnection from, PacketConnection to, bool fromClient)
+        {
+            while (true)
+            {
+                Packet packet = from.Receive();
+                if (fromClient)
+                    ColorConsole.WriteLine(Color.Cyan, $"{from.RemoteEndPoint} >> {to.RemoteEndPoint} | {packet}");
+                else
+                    ColorConsole.WriteLine(Color.Magenta, $"{to.RemoteEndPoint} << {from.RemoteEndPoint} | {packet}");
+                to.Send(packet);
+            }
+        }
+    }
+}

src/tool/Syroot.Worms.Worms2.GameServer/Server.cs

@@ -0,0 +1,172 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Syroot.ColoredConsole;
+
+namespace Syroot.Worms.Worms2.GameServer
+{
+    internal class Server
+    {
+        // ---- FIELDS -------------------------------------------------------------------------------------------------
+
+        private int _idCounter;
+        private readonly TcpListener _listener;
+        private readonly Dictionary<PacketCode, Action<PacketConnection, Packet>> _packetHandlers;
+
+        // ---- CONSTRUCTORS & DESTRUCTOR ------------------------------------------------------------------------------
+
+        internal Server(IPEndPoint localEndPoint)
+        {
+            _listener = new TcpListener(localEndPoint);
+            _packetHandlers = new Dictionary<PacketCode, Action<PacketConnection, Packet>>
+            {
+                [PacketCode.ListRooms] = OnListRooms,
+                [PacketCode.ListUsers] = OnListUsers,
+                [PacketCode.ListGames] = OnListGames,
+                [PacketCode.Login] = OnLogin,
+                [PacketCode.CreateRoom] = OnCreateRoom,
+                [PacketCode.Join] = OnJoinRoom,
+                [PacketCode.LeaveRoom] = OnLeaveRoom,
+                [PacketCode.CreateGame] = OnCreateGame,
+                [PacketCode.ChatRoom] = OnChatRoom,
+            };
+        }
+
+        // ---- METHODS (INTERNAL) -------------------------------------------------------------------------------------
+
+        internal void Run()
+        {
+            _listener.Start();
+            Console.WriteLine($"Listening under {_listener.LocalEndpoint}...");
+
+            TcpClient? client;
+            while ((client = _listener.AcceptTcpClient()) != null)
+                Task.Run(() => HandleClient(client));
+        }
+
+        // ---- METHODS (PRIVATE) --------------------------------------------------------------------------------------
+
+        private static void SendPacket(PacketConnection connection, Packet packet)
+        {
+            LogPacket(connection, packet, false);
+            connection.Send(packet);
+        }
+
+        private static void LogPacket(PacketConnection connection, Packet packet, bool fromClient)
+        {
+            if (fromClient)
+                ColorConsole.WriteLine(Color.Cyan, $"{connection.RemoteEndPoint} >> {packet}");
+            else
+                ColorConsole.WriteLine(Color.Magenta, $"{connection.RemoteEndPoint} << {packet}");
+        }
+
+        private void HandleClient(TcpClient client)
+        {
+            PacketConnection connection = new PacketConnection(client);
+            try
+            {
+                while (true)
+                {
+                    // Receive and log query.
+                    Packet packet = connection.Receive();
+                    LogPacket(connection, packet, true);
+
+                    // Handle query.
+                    if (_packetHandlers.TryGetValue(packet.Code, out Action<PacketConnection, Packet>? handler))
+                        handler(connection, packet);
+                    else
+                        ColorConsole.WriteLine(Color.Red, $"Unhandled packet {packet.Code}.");
+                }
+            }
+            catch (EndOfStreamException) { }
+        }
+
+        // ---- Packet Handlers ----
+
+        private void OnListRooms(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.ListItem,
+                value1: 1234,
+                data: Encoding.ASCII.GetBytes("12.34.45.56"),
+                name: "Room Name",
+                session: new SessionInfo
+                {
+                    Unknown0 = 0x17171717,
+                    Unknown4 = 0x02010101,
+                    Nation = Nation.CY,
+                    GameVersion = 49,
+                    GameRelease = 49,
+                    Action0 = 0x01,
+                    Action1 = 0x01,
+                    Action2 = 0x01,
+                    Action3 = 0x00
+                }));
+
+            SendPacket(connection, new Packet(PacketCode.ListEnd));
+        }
+
+        private void OnListUsers(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.ListEnd));
+        }
+
+        private void OnListGames(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.ListItem,
+                value1: 12, // user ID,
+                data: Encoding.ASCII.GetBytes("12.34.45.67"),
+                name: "SomeUser",
+                session: new SessionInfo
+                {
+                    GameVersion = 49,
+                    Nation = Nation.IT
+                }));
+            SendPacket(connection, new Packet(PacketCode.ListEnd));
+        }
+
+        private void OnLogin(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.LoginReply,
+                value1: Interlocked.Increment(ref _idCounter), // user ID
+                error: 0));
+        }
+
+        private void OnCreateRoom(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.CreateRoomReply,
+                value1: Interlocked.Increment(ref _idCounter), // room ID
+                error: 0));
+        }
+
+        private void OnJoinRoom(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.JoinReply,
+                error: 0));
+        }
+
+        private void OnLeaveRoom(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.LeaveRoomReply,
+                error: 0));
+        }
+
+        private void OnCreateGame(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.CreateGameReply,
+                value1: 123456,
+                error: 0));
+        }
+
+        private void OnChatRoom(PacketConnection connection, Packet packet)
+        {
+            SendPacket(connection, new Packet(PacketCode.ChatRoomReply,
+                error: 0));
+        }
+    }
+}

src/tool/Syroot.Worms.Worms2.GameServer/SessionInfo.cs

@@ -0,0 +1,33 @@
+using System.Runtime.InteropServices;
+
+namespace Syroot.Worms.Worms2.GameServer
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 50)]
+    internal struct SessionInfo
+    {
+        // ---- FIELDS -------------------------------------------------------------------------------------------------
+
+        internal uint Unknown0;
+        internal uint Unknown4;
+        internal Nation Nation;
+        internal byte GameVersion;
+        internal byte GameRelease;
+        internal byte Action0;
+        internal byte Action1;
+        internal byte Action2;
+        internal byte Action3;
+        internal byte Unused15;
+        internal ulong Unused16;
+        internal ulong Unused24;
+        internal ulong Unused32;
+        internal ulong Unused40;
+        internal ushort Unused48;
+
+        // ---- METHODS (PUBLIC) ---------------------------------------------------------------------------------------
+
+        /// <inheritdoc/>
+        public override string ToString() => $"{Unknown0:X8}-{Unknown4:X8} {Nation} {GameVersion}/{GameRelease} "
+            + $"{Action0:X2}-{Action1:X2}-{Action2:X2}-{Action3:X2} "
+            + $"{Unused15:X2}{Unused16:X8}{Unused24:X8}{Unused24:X8}{Unused40:X8}{Unused48:X2}";
+    }
+}

src/tool/Syroot.Worms.Worms2.GameServer/Syroot.Worms.Worms2.GameServer.csproj

@@ -1,11 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
     <LangVersion>latest</LangVersion>
     <Nullable>enable</Nullable>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp3</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
+    <PackageReference Include="Syroot.ColoredConsole" Version="1.0.0-beta.1" />
     <ProjectReference Include="..\..\library\Syroot.Worms\Syroot.Worms.csproj" />
   </ItemGroup>
 </Project>

src/tool/Syroot.Worms.Worms2.GameServer/app.manifest

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="MyApplication.app"/>
+  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
+    <security>
+      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
+        <!-- UAC Manifest Options
+             If you want to change the Windows User Account Control level replace the 
+             requestedExecutionLevel node with one of the following.
+
+        <requestedExecutionLevel  level="asInvoker" uiAccess="false" />
+        <requestedExecutionLevel  level="requireAdministrator" uiAccess="false" />
+        <requestedExecutionLevel  level="highestAvailable" uiAccess="false" />
+
+            Specifying requestedExecutionLevel element will disable file and registry virtualization. 
+            Remove this element if your application requires this virtualization for backwards
+            compatibility.
+        -->
+        <requestedExecutionLevel level="asInvoker" uiAccess="false" />
+      </requestedPrivileges>
+    </security>
+  </trustInfo>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- A list of the Windows versions that this application has been tested on
+           and is designed to work with. Uncomment the appropriate elements
+           and Windows will automatically select the most compatible environment. -->
+
+      <!-- Windows Vista -->
+      <!--<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}" />-->
+
+      <!-- Windows 7 -->
+      <!--<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />-->
+
+      <!-- Windows 8 -->
+      <!--<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}" />-->
+
+      <!-- Windows 8.1 -->
+      <!--<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}" />-->
+
+      <!-- Windows 10 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+
+    </application>
+  </compatibility>
+
+  <!-- Indicates that the application is DPI-aware and will not be automatically scaled by Windows at higher
+       DPIs. Windows Presentation Foundation (WPF) applications are automatically DPI-aware and do not need 
+       to opt in. Windows Forms applications targeting .NET Framework 4.6 that opt into this setting, should 
+       also set the 'EnableWindowsFormsHighDpiAutoResizing' setting to 'true' in their app.config. -->
+  <!--
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>
+    </windowsSettings>
+  </application>
+  -->
+
+  <!-- Enable themes for Windows common controls and dialogs (Windows XP and later) -->
+  <!--
+  <dependency>
+    <dependentAssembly>
+      <assemblyIdentity
+          type="win32"
+          name="Microsoft.Windows.Common-Controls"
+          version="6.0.0.0"
+          processorArchitecture="*"
+          publicKeyToken="6595b64144ccf1df"
+          language="*"
+        />
+    </dependentAssembly>
+  </dependency>
+  -->
+
+</assembly>