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EonaCat
2025-12-16 06:16:55 +01:00
parent 53783498c5
commit 76c4cd2000
15 changed files with 1310 additions and 42 deletions
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14
EonaCat.FastWriter/EonaCat.FastWriter.Testers/EonaCat.FastWriter.Testers.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net10.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\EonaCat.FastWriter\EonaCat.FastWriter.csproj" />
</ItemGroup>
</Project>

122
EonaCat.FastWriter/EonaCat.FastWriter.Testers/Program.cs Normal file
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using EonaCat.FastWriter;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal class Program
{
private static async Task Main(string[] args)
{
// Test serialization for simple objects
var user = new User
{
Id = 1,
Name = "Alice",
IsAdmin = true,
Home = new Address { Street = "123 Main St", City = "Wonderland" }
};
byte[] data1 = FastSerializer.Serialize(user);
User clone = FastSerializer.Deserialize<User>(data1);
Console.WriteLine($"User clone: {clone.Name}, Admin={clone.IsAdmin}, City={clone.Home.City}");
// Test big collections
var numbers = new List<int>();
for (int i = 0; i < 100_000; i++)
{
numbers.Add(i);
}
byte[] data2 = FastSerializer.Serialize(numbers);
var copy1 = FastSerializer.Deserialize<List<int>>(data2);
Console.WriteLine($"Big list count: {copy1.Count}, First={copy1[0]}, Last={copy1[^1]}");
// Test array of strings
string[] names = { "A", "B", "C", "D", "E" };
var data3 = FastSerializer.Serialize(names);
var copy2 = FastSerializer.Deserialize<string[]>(data3);
Console.WriteLine($"String array length: {copy2.Length}, Second={copy2[1]}");
// Test nested collections
var users = new List<User>();
for (int i = 0; i < 10; i++)
{
users.Add(new User
{
Id = i,
Name = $"User{i}",
IsAdmin = i % 2 == 0,
Home = new Address { Street = $"Street {i}", City = $"City {i}" }
});
}
byte[] data4 = FastSerializer.Serialize(users);
var copy3 = FastSerializer.Deserialize<List<User>>(data4);
Console.WriteLine($"Nested list count: {copy3.Count}, Last user city: {copy3[^1].Home.City}");
// Test dictionary
var dict = new Dictionary<string, User>();
for (int i = 0; i < 5; i++)
{
dict[$"key{i}"] = new User { Id = i, Name = $"DUser{i}", Home = new Address { Street = $"S{i}", City = $"C{i}" } };
}
byte[] data5 = FastSerializer.Serialize(dict);
var copy4 = FastSerializer.Deserialize<Dictionary<string, User>>(data5);
Console.WriteLine($"Dictionary count: {copy4.Count}, key2 user name: {copy4["key2"].Name}");
// Server and Client test with messages
var server = new Server<Message>(12345);
server.MessageReceived += async (msg, client) =>
{
Console.WriteLine($"Server received: {msg.Text}, Number={msg.Number}");
await server.SendAsync(new Message { Text = "Ack: " + msg.Text, Number = msg.Number }, client);
};
_ = server.StartAsync();
var client = new Client<Message>("127.0.0.1", 12345);
client.MessageReceived += async msg =>
{
Console.WriteLine($"Client received: {msg.Text}, Number={msg.Number}");
await client.SendAsync(new Message { Text = $"Got your {msg.Number}", Number = 999 });
};
await client.ConnectAsync();
await client.SendAsync(new Message { Text = "Hello Server", Number = 123 });
// Send nested objects and big collections through server
await client.SendAsync(new Message { Text = $"Nested test: {copy3[0].Name}", Number = copy3.Count });
await client.SendAsync(new Message { Text = $"Big list last value: {copy1[^1]}", Number = copy1.Count });
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
}
public class Address
{
public string Street { get; set; } = "";
public string City { get; set; } = "";
}
public class User
{
public int Id { get; set; }
public string Name { get; set; } = "";
public bool IsAdmin { get; set; }
public Address Home { get; set; } = new Address();
}
public class Message
{
public string Text { get; set; } = "";
public int Number { get; set; }
}

4
EonaCat.FastWriter/EonaCat.FastWriter.slnx Normal file
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<Solution>
<Project Path="EonaCat.FastWriter.Testers/EonaCat.FastWriter.Testers.csproj" />
<Project Path="EonaCat.FastWriter/EonaCat.FastWriter.csproj" />
</Solution>

199
EonaCat.FastWriter/EonaCat.FastWriter/Client.cs Normal file
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namespace EonaCat.FastWriter;
using System;
using System.Net.Sockets;
using System.Threading;
using System.Threading.Tasks;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
public class Client<T>
{
private readonly string _host;
private readonly int _port;
private TcpClient? _client;
private NetworkStream? _stream;
private readonly bool _autoReconnect;
private readonly int _reconnectDelayMs;
private readonly bool _useRaw;
private CancellationTokenSource _cts = new();
public string Nickname { get; private set; } = Guid.NewGuid().ToString();
// Events
public event Action<T>? MessageReceived;
public event Action<byte[]>? RawMessageReceived;
public event Action? Connected;
public event Action? Disconnected;
public Client(string host, int port, bool autoReconnect = true, int reconnectDelayMs = 3000, string? nickname = null, bool useRaw = false)
{
_host = host;
_port = port;
_autoReconnect = autoReconnect;
_reconnectDelayMs = reconnectDelayMs;
_useRaw = useRaw; // store raw mode
if (!string.IsNullOrEmpty(nickname))
{
Nickname = nickname;
}
}
public async Task ConnectAsync()
{
_cts = new CancellationTokenSource();
await ConnectInternalAsync(_cts.Token);
}
private async Task ConnectInternalAsync(CancellationToken token)
{
while (!token.IsCancellationRequested)
{
try
{
_client = new TcpClient();
await _client.ConnectAsync(_host, _port);
_stream = _client.GetStream();
Connected?.Invoke();
// Start receiving messages automatically in the chosen mode
_ = ReceiveLoopAsync(token);
return;
}
catch
{
Disconnected?.Invoke();
if (!_autoReconnect)
{
throw;
}
await Task.Delay(_reconnectDelayMs, token);
}
}
}
public async Task SendAsync(T msg)
{
if (_useRaw)
{
throw new InvalidOperationException("Client is in raw mode; use SendRawAsync instead.");
}
if (_stream == null || _client == null || !_client.Connected)
{
if (_autoReconnect)
{
await ConnectInternalAsync(_cts.Token);
}
else
{
throw new InvalidOperationException("Client not connected");
}
}
byte[] data = FastSerializer.Serialize(msg);
byte[] lenBytes = BitConverter.GetBytes(data.Length);
await _stream.WriteAsync(lenBytes, 0, lenBytes.Length);
await _stream.WriteAsync(data, 0, data.Length);
}
public async Task SendRawAsync(byte[] data)
{
if (!_useRaw)
{
throw new InvalidOperationException("Client is not in raw mode; use SendAsync<T> instead.");
}
if (_stream == null || _client == null || !_client.Connected)
{
if (_autoReconnect)
{
await ConnectInternalAsync(_cts.Token);
}
else
{
throw new InvalidOperationException("Client not connected");
}
}
await _stream.WriteAsync(data, 0, data.Length);
}
private async Task ReceiveLoopAsync(CancellationToken token)
{
if (_stream == null)
{
return;
}
var stream = _stream;
try
{
while (!token.IsCancellationRequested)
{
if (_useRaw)
{
var buffer = new byte[4096];
int read = await stream.ReadAsync(buffer, 0, buffer.Length, token);
if (read == 0)
{
break; // disconnected
}
byte[] received = new byte[read];
Array.Copy(buffer, 0, received, 0, read);
RawMessageReceived?.Invoke(received);
}
else
{
byte[] lenBytes = new byte[4];
int read = await stream.ReadAsync(lenBytes, 0, 4, token);
if (read == 0)
{
break;
}
int length = BitConverter.ToInt32(lenBytes, 0);
byte[] data = new byte[length];
int totalRead = 0;
while (totalRead < length)
{
totalRead += await stream.ReadAsync(data, totalRead, length - totalRead, token);
}
var msg = FastSerializer.Deserialize<T>(data);
MessageReceived?.Invoke(msg);
}
}
}
catch
{
// connection lost
}
finally
{
Disconnected?.Invoke();
_client?.Close();
_stream = null;
if (_autoReconnect && !token.IsCancellationRequested)
{
await ConnectInternalAsync(token);
}
}
}
public void Disconnect()
{
_cts.Cancel();
_stream?.Close();
_client?.Close();
}
public void SetNickname(string nickname) => Nickname = nickname;
}

37
EonaCat.FastWriter/EonaCat.FastWriter/EonaCat.FastWriter.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.1</TargetFramework>
<Nullable>enable</Nullable>
<LangVersion>latest</LangVersion>
<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
<PackageId>EonaCat.FastWriter</PackageId>
<Title>EonaCat.FastWriter</Title>
<Authors>EonaCat (Jeroen Saey)</Authors>
<Company>EonaCat</Company>
<Copyright>EonaCat (Jeroen Saey)</Copyright>
<PackageProjectUrl>https://git.saey.me/EonaCat/EonaCat.FastWriter</PackageProjectUrl>
<RepositoryUrl>https://git.saey.me/EonaCat/EonaCat.FastWriter</RepositoryUrl>
<PackageReadmeFile>readme.md</PackageReadmeFile>
<PackageIcon>icon.png</PackageIcon>
<RepositoryType>git</RepositoryType>
<PackageTags>fast;writer;serialize;deserialize;EonaCat;Jeroen;Saey;binary;Speed;performance</PackageTags>
<PackageLicenseFile>LICENSE</PackageLicenseFile>
</PropertyGroup>
<ItemGroup>
<None Include="..\..\icon.png">
<Pack>True</Pack>
<PackagePath>\</PackagePath>
</None>
<None Include="..\..\LICENSE">
<Pack>True</Pack>
<PackagePath>\</PackagePath>
</None>
<None Include="..\..\readme.md">
<Pack>True</Pack>
<PackagePath>\</PackagePath>
</None>
</ItemGroup>
</Project>

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EonaCat.FastWriter/EonaCat.FastWriter/FastReader.cs Normal file
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using System.Text;
namespace EonaCat.FastWriter;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
using System;
internal ref struct FastReader
{
private readonly ReadOnlySpan<byte> _span;
private int _pos;
public FastReader(ReadOnlySpan<byte> span) { _span = span; _pos = 0; }
public byte ReadByte() => _span[_pos++];
public int ReadInt() { int result = 0, shift = 0; byte b; do { b = ReadByte(); result |= (b & 0x7F) << shift; shift += 7; } while ((b & 0x80) != 0); return result; }
public long ReadInt64() { long result = 0; int shift = 0; byte b; do { b = ReadByte(); result |= ((long)(b & 0x7F)) << shift; shift += 7; } while ((b & 0x80) != 0); return result; }
public string? ReadString()
{
int len = ReadInt();
if (len < 0)
{
return null;
}
var s = Encoding.UTF8.GetString(_span.Slice(_pos, len));
_pos += len;
return s;
}
// Primitive support
public bool ReadBool() => ReadByte() != 0;
public byte ReadByteValue() => ReadByte();
public sbyte ReadSByte() => (sbyte)ReadByte();
public short ReadShort() => (short)ReadInt();
public ushort ReadUShort() => (ushort)ReadInt();
public uint ReadUInt() => (uint)ReadInt();
public long ReadLong() => ReadInt64();
public ulong ReadULong() => (ulong)ReadInt64();
public float ReadFloat() => BitConverter.Int32BitsToSingle(ReadInt());
public double ReadDouble() => BitConverter.Int64BitsToDouble(ReadInt64());
public char ReadChar() => (char)ReadInt();
}

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EonaCat.FastWriter/EonaCat.FastWriter/FastSerializer.cs Normal file
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using System.Buffers;
namespace EonaCat.FastWriter;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
using EonaCat.FastWriter.Models;
using System;
public static class FastSerializer
{
public static byte[] Serialize<T>(T value)
{
var buffer = new ArrayBufferWriter<byte>();
var writer = new FastWriter(buffer);
Dispatcher.Write(ref writer, value, typeof(T));
return buffer.WrittenSpan.ToArray();
}
public static T Deserialize<T>(ReadOnlySpan<byte> data)
{
var reader = new FastReader(data);
return (T)Dispatcher.Read(ref reader, typeof(T))!;
}
}

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EonaCat.FastWriter/EonaCat.FastWriter/FastWriter.cs Normal file
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using System.Buffers;
using System.Text;
namespace EonaCat.FastWriter;
using System;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal ref struct FastWriter
{
private readonly IBufferWriter<byte> _buffer;
public FastWriter(IBufferWriter<byte> buffer) => _buffer = buffer;
public void WriteByte(byte v) { var s = _buffer.GetSpan(1); s[0] = v; _buffer.Advance(1); }
public void WriteInt(int value) { uint v = (uint)value; while (v >= 0x80) { WriteByte((byte)(v | 0x80)); v >>= 7; } WriteByte((byte)v); }
public void WriteInt64(long value) { ulong v = (ulong)value; while (v >= 0x80) { WriteByte((byte)(v | 0x80)); v >>= 7; } WriteByte((byte)v); }
public void WriteString(string? value)
{
if (value == null) { WriteInt(-1); return; }
int byteCount = Encoding.UTF8.GetByteCount(value);
WriteInt(byteCount);
var span = _buffer.GetSpan(byteCount);
Encoding.UTF8.GetBytes(value.AsSpan(), span);
_buffer.Advance(byteCount);
}
// Primitive support
public void WriteBool(bool v) => WriteByte(v ? (byte)1 : (byte)0);
public void WriteByteValue(byte v) => WriteByte(v);
public void WriteSByte(sbyte v) => WriteByte((byte)v);
public void WriteShort(short v) => WriteInt(v);
public void WriteUShort(ushort v) => WriteInt(v);
public void WriteUInt(uint v) => WriteInt((int)v);
public void WriteLong(long v) => WriteInt64(v);
public void WriteULong(ulong v) => WriteInt64((long)v);
public void WriteFloat(float v) => WriteInt(BitConverter.SingleToInt32Bits(v));
public void WriteDouble(double v) => WriteInt64(BitConverter.DoubleToInt64Bits(v));
public void WriteChar(char v) => WriteInt(v);
}

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EonaCat.FastWriter/EonaCat.FastWriter/Models/Dispatcher.cs Normal file
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using System.Collections;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
namespace EonaCat.FastWriter.Models;
using System;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal static class Dispatcher
{
private static readonly ConcurrentDictionary<Type, TypeModel> Models = new();
public static void Write(ref FastWriter w, object? value, Type type)
{
if (value == null) { w.WriteByte(0); return; }
w.WriteByte(1);
if (TryWritePrimitive(ref w, value, type))
{
return;
}
if (typeof(IEnumerable).IsAssignableFrom(type) && type != typeof(string))
{
WriteEnumerable(ref w, (IEnumerable)value, type);
return;
}
WriteObject(ref w, value, type);
}
public static object? Read(ref FastReader r, Type type)
{
if (r.ReadByte() == 0)
{
return null;
}
if (TryReadPrimitive(ref r, type, out var value))
{
return value;
}
if (typeof(IEnumerable).IsAssignableFrom(type) && type != typeof(string))
{
return ReadEnumerable(ref r, type);
}
return ReadObject(ref r, type);
}
private static bool TryWritePrimitive(ref FastWriter w, object value, Type type)
{
if (type == typeof(bool)) { w.WriteBool((bool)value); return true; }
if (type == typeof(byte)) { w.WriteByteValue((byte)value); return true; }
if (type == typeof(sbyte)) { w.WriteSByte((sbyte)value); return true; }
if (type == typeof(short)) { w.WriteShort((short)value); return true; }
if (type == typeof(ushort)) { w.WriteUShort((ushort)value); return true; }
if (type == typeof(int)) { w.WriteInt((int)value); return true; }
if (type == typeof(uint)) { w.WriteUInt((uint)value); return true; }
if (type == typeof(long)) { w.WriteLong((long)value); return true; }
if (type == typeof(ulong)) { w.WriteULong((ulong)value); return true; }
if (type == typeof(float)) { w.WriteFloat((float)value); return true; }
if (type == typeof(double)) { w.WriteDouble((double)value); return true; }
if (type == typeof(char)) { w.WriteChar((char)value); return true; }
if (type == typeof(string)) { w.WriteString((string)value); return true; }
if (type.IsEnum) { w.WriteInt(Convert.ToInt32(value)); return true; }
return false;
}
private static bool TryReadPrimitive(ref FastReader r, Type type, out object? value)
{
value = type switch
{
Type t when t == typeof(bool) => r.ReadBool(),
Type t when t == typeof(byte) => r.ReadByteValue(),
Type t when t == typeof(sbyte) => r.ReadSByte(),
Type t when t == typeof(short) => r.ReadShort(),
Type t when t == typeof(ushort) => r.ReadUShort(),
Type t when t == typeof(int) => r.ReadInt(),
Type t when t == typeof(uint) => r.ReadUInt(),
Type t when t == typeof(long) => r.ReadLong(),
Type t when t == typeof(ulong) => r.ReadULong(),
Type t when t == typeof(float) => r.ReadFloat(),
Type t when t == typeof(double) => r.ReadDouble(),
Type t when t == typeof(char) => r.ReadChar(),
Type t when t == typeof(string) => r.ReadString(),
Type t when t.IsEnum => Enum.ToObject(t, r.ReadInt()),
_ => null
};
return value != null;
}
private static void WriteObject(ref FastWriter w, object obj, Type type)
{
var model = Models.GetOrAdd(type, t => new TypeModel(t));
w.WriteInt(model.Properties.Length);
foreach (var p in model.Properties)
{
int id = TypeModel.GetFieldId(p);
w.WriteInt(id);
var value = model.Accessors[id].Getter(obj);
Write(ref w, value, p.PropertyType);
}
}
private static object ReadObject(ref FastReader r, Type type)
{
var model = Models.GetOrAdd(type, t => new TypeModel(t));
var obj = model.ObjectCreator();
int count = r.ReadInt();
for (int i = 0; i < count; i++)
{
int id = r.ReadInt();
if (model.Accessors.TryGetValue(id, out var accessor))
{
accessor.Setter(obj, Read(ref r, accessor.PropertyType));
}
else
{
Skip(ref r);
}
}
return obj;
}
private static void WriteEnumerable(ref FastWriter w, IEnumerable value, Type type)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Dictionary<,>))
{
var dictType = type;
var keyType = dictType.GetGenericArguments()[0];
var valueType = dictType.GetGenericArguments()[1];
var dict = (System.Collections.IDictionary)value;
w.WriteInt(dict.Count);
foreach (System.Collections.DictionaryEntry entry in dict)
{
Write(ref w, entry.Key, keyType);
Write(ref w, entry.Value, valueType);
}
return;
}
// normal IEnumerable handling
var list = value.Cast<object?>().ToList();
w.WriteInt(list.Count);
var elemType = type.IsArray ? type.GetElementType()! : type.GetGenericArguments()[0];
foreach (var i in list)
{
Write(ref w, i, elemType);
}
}
private static object ReadEnumerable(ref FastReader r, Type type)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Dictionary<,>))
{
var dictType = type;
var keyType = dictType.GetGenericArguments()[0];
var valueType = dictType.GetGenericArguments()[1];
int count = r.ReadInt();
var dict = (System.Collections.IDictionary)Activator.CreateInstance(type)!;
for (int i = 0; i < count; i++)
{
var key = Read(ref r, keyType);
var value = Read(ref r, valueType);
dict.Add(key, value);
}
return dict;
}
// normal IEnumerable handling
int length = r.ReadInt();
var elemType = type.IsArray ? type.GetElementType()! : type.GetGenericArguments()[0];
var list = (System.Collections.IList)Activator.CreateInstance(typeof(List<>).MakeGenericType(elemType))!;
for (int i = 0; i < length; i++)
{
list.Add(Read(ref r, elemType));
}
if (type.IsArray)
{
var array = Array.CreateInstance(elemType, list.Count);
for (int i = 0; i < list.Count; i++)
{
array.SetValue(list[i], i);
}
return array;
}
return list;
}
private static void Skip(ref FastReader r)
{
if (r.ReadByte() == 0)
{
return;
}
r.ReadString();
}
}

41
EonaCat.FastWriter/EonaCat.FastWriter/Models/PropertyAccessor.cs Normal file
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using System.Linq.Expressions;
using System.Reflection;
namespace EonaCat.FastWriter.Models;
using System;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal sealed class PropertyAccessor
{
public readonly Action<object, object?> Setter;
public readonly Func<object, object?> Getter;
public readonly Type PropertyType;
public PropertyAccessor(PropertyInfo prop)
{
PropertyType = prop.PropertyType;
Setter = CreateSetter(prop);
Getter = CreateGetter(prop);
}
private static Action<object, object?> CreateSetter(PropertyInfo prop)
{
var objParam = Expression.Parameter(typeof(object), "obj");
var valParam = Expression.Parameter(typeof(object), "val");
var castObj = Expression.Convert(objParam, prop.DeclaringType!);
var castVal = Expression.Convert(valParam, prop.PropertyType);
var body = Expression.Assign(Expression.Property(castObj, prop), castVal);
return Expression.Lambda<Action<object, object?>>(body, objParam, valParam).Compile();
}
private static Func<object, object?> CreateGetter(PropertyInfo prop)
{
var objParam = Expression.Parameter(typeof(object), "obj");
var castObj = Expression.Convert(objParam, prop.DeclaringType!);
var body = Expression.Convert(Expression.Property(castObj, prop), typeof(object));
return Expression.Lambda<Func<object, object?>>(body, objParam).Compile();
}
}

51
EonaCat.FastWriter/EonaCat.FastWriter/Models/TypeModel.cs Normal file
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using System.Buffers;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
namespace EonaCat.FastWriter.Models;
using System;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal sealed class TypeModel
{
public readonly PropertyInfo[] Properties;
public readonly Dictionary<int, PropertyAccessor> Accessors;
public readonly Func<object> ObjectCreator;
public TypeModel(Type type)
{
Properties = type.GetProperties(BindingFlags.Public | BindingFlags.Instance)
.Where(p => p.CanRead && p.CanWrite)
.OrderBy(p => p.Name)
.ToArray();
Accessors = Properties.ToDictionary(
p => GetFieldId(p),
p => new PropertyAccessor(p)
);
ObjectCreator = CreateObjectActivator(type);
}
private static Func<object> CreateObjectActivator(Type type)
{
if (type.IsValueType)
{
return () => Activator.CreateInstance(type)!;
}
var ctor = type.GetConstructor(Type.EmptyTypes);
if (ctor != null)
{
return () => Activator.CreateInstance(type)!;
}
return () => System.Runtime.Serialization.FormatterServices.GetUninitializedObject(type);
}
public static int GetFieldId(PropertyInfo p) => p.Name.GetHashCode(StringComparison.Ordinal);
}

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EonaCat.FastWriter/EonaCat.FastWriter/Server.cs Normal file
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using System.Collections.Concurrent;
namespace EonaCat.FastWriter;
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
using System;
using System.Net;
using System.Net.Sockets;
using System.Threading.Tasks;
public class Server<T>
{
private readonly int _port;
private TcpListener? _listener;
private readonly bool _useRaw;
// Thread-safe storage of connected clients
private readonly ConcurrentDictionary<TcpClient, NetworkStream> _clients = new();
private readonly ConcurrentDictionary<TcpClient, string> _nicknames = new();
// Events
public event Action<T, TcpClient>? MessageReceived;
public event Action<byte[], TcpClient>? RawMessageReceived; // new
public event Action<TcpClient, string?>? ClientConnected;
public event Action<TcpClient, string?>? ClientDisconnected;
public Server(int port, bool useRaw = false)
{
_port = port;
_useRaw = useRaw;
}
public async Task StartAsync()
{
_listener = new TcpListener(IPAddress.Any, _port);
_listener.Start();
Console.WriteLine($"Server listening on port {_port}");
while (true)
{
var client = await _listener.AcceptTcpClientAsync();
var stream = client.GetStream();
_clients[client] = stream;
string? nickname = null;
_nicknames[client] = nickname;
ClientConnected?.Invoke(client, nickname);
_ = HandleClientAsync(client, stream); // fire-and-forget
}
}
private async Task HandleClientAsync(TcpClient client, NetworkStream stream)
{
try
{
while (true)
{
if (_useRaw)
{
var buffer = new byte[4096];
int read = await stream.ReadAsync(buffer, 0, buffer.Length);
if (read == 0)
{
break; // disconnected
}
byte[] received = new byte[read];
Array.Copy(buffer, 0, received, 0, read);
RawMessageReceived?.Invoke(received, client);
}
else
{
// length-prefixed typed messages
byte[] lenBytes = new byte[4];
int read = await stream.ReadAsync(lenBytes, 0, 4);
if (read == 0)
{
break; // disconnected
}
int length = BitConverter.ToInt32(lenBytes, 0);
byte[] data = new byte[length];
int totalRead = 0;
while (totalRead < length)
{
totalRead += await stream.ReadAsync(data, totalRead, length - totalRead);
}
var msg = FastSerializer.Deserialize<T>(data);
MessageReceived?.Invoke(msg, client);
}
}
}
catch
{
// connection lost
}
finally
{
_clients.TryRemove(client, out _);
_nicknames.TryRemove(client, out var nick);
ClientDisconnected?.Invoke(client, nick);
client.Close();
}
}
// Send typed message
public async Task SendAsync(T msg, TcpClient client)
{
if (_useRaw)
{
throw new InvalidOperationException("Server is in raw mode; use SendRawAsync instead.");
}
if (!_clients.TryGetValue(client, out var stream))
{
return;
}
byte[] data = FastSerializer.Serialize(msg);
byte[] lenBytes = BitConverter.GetBytes(data.Length);
await stream.WriteAsync(lenBytes, 0, lenBytes.Length);
await stream.WriteAsync(data, 0, data.Length);
}
// Send raw bytes
public async Task SendRawAsync(byte[] data, TcpClient client)
{
if (!_useRaw)
{
throw new InvalidOperationException("Server is not in raw mode; use SendAsync<T> instead.");
}
if (!_clients.TryGetValue(client, out var stream))
{
return;
}
await stream.WriteAsync(data, 0, data.Length);
}
// Broadcast typed message
public async Task BroadcastAsync(T msg)
{
foreach (var kv in _clients)
{
try { await SendAsync(msg, kv.Key); } catch { }
}
}
// Broadcast raw bytes
public async Task BroadcastRawAsync(byte[] data)
{
foreach (var kv in _clients)
{
try { await SendRawAsync(data, kv.Key); } catch { }
}
}
// Optional: send by nickname (typed)
public async Task SendToNicknameAsync(T msg, string nickname)
{
foreach (var kv in _nicknames)
{
if (kv.Value == nickname)
{
await SendAsync(msg, kv.Key);
break;
}
}
}
public void SetClientNickname(TcpClient client, string nickname)
{
if (_clients.ContainsKey(client))
{
_nicknames[client] = nickname;
}
}
public void Stop() => _listener?.Stop();
}

181
LICENSE
View File

@@ -1,64 +1,195 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
https://EonaCat.com/license/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
OF SOFTWARE BY EONACAT (JEROEN SAEY)
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APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
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160
README.md
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@@ -1,3 +1,161 @@
# EonaCat.FastWriter
EonaCat.FastWriter
A high-performance serialization library.
Custom serializer for maximum speed and minimal allocations.
---
Optional Tcp server and client with auto-reconnect and broadcast support.
## Features
- **Typed messaging**: Send/receive objects of any type `T` using a fast custom serializer.
- **Raw byte messaging**: Send/receive arbitrary byte arrays for raw TCP servers/clients.
- **Dynamic mode switching**: Both server and client can switch between typed and raw mode at runtime using the `UseRaw` property.
- **Auto-reconnect**: Client automatically reconnects on connection loss.
- **Broadcast**: Send messages to all connected clients.
- **Nicknames**: Optional support for assigning nicknames to clients.
---
## Installation
```csharp
Install-Package EonaCat.FastWriter
```
Include the `EonaCat.FastWriter` namespace and all relevant classes in your project:
- `Server<T>`
- `Client<T>`
- `FastSerializer`, `FastReader`, `FastWriter`, `Dispatcher`
No external dependencies required.
---
## Usage
# Example application:
```csharp
using EonaCat.FastWriter;
internal class Program
{
private static async Task Main(string[] args)
{
// Test serialization for simple objects
var user = new User
{
Id = 1,
Name = "Alice",
IsAdmin = true,
Home = new Address { Street = "123 Main St", City = "Wonderland" }
};
byte[] data1 = FastSerializer.Serialize(user);
User clone = FastSerializer.Deserialize<User>(data1);
Console.WriteLine($"User clone: {clone.Name}, Admin={clone.IsAdmin}, City={clone.Home.City}");
// Test big collections
var numbers = new List<int>();
for (int i = 0; i < 100_000; i++)
{
numbers.Add(i);
}
byte[] data2 = FastSerializer.Serialize(numbers);
var copy1 = FastSerializer.Deserialize<List<int>>(data2);
Console.WriteLine($"Big list count: {copy1.Count}, First={copy1[0]}, Last={copy1[^1]}");
// Test array of strings
string[] names = { "A", "B", "C", "D", "E" };
var data3 = FastSerializer.Serialize(names);
var copy2 = FastSerializer.Deserialize<string[]>(data3);
Console.WriteLine($"String array length: {copy2.Length}, Second={copy2[1]}");
// Test nested collections
var users = new List<User>();
for (int i = 0; i < 10; i++)
{
users.Add(new User
{
Id = i,
Name = $"User{i}",
IsAdmin = i % 2 == 0,
Home = new Address { Street = $"Street {i}", City = $"City {i}" }
});
}
byte[] data4 = FastSerializer.Serialize(users);
var copy3 = FastSerializer.Deserialize<List<User>>(data4);
Console.WriteLine($"Nested list count: {copy3.Count}, Last user city: {copy3[^1].Home.City}");
// Test dictionary
var dict = new Dictionary<string, User>();
for (int i = 0; i < 5; i++)
{
dict[$"key{i}"] = new User { Id = i, Name = $"DUser{i}", Home = new Address { Street = $"S{i}", City = $"C{i}" } };
}
byte[] data5 = FastSerializer.Serialize(dict);
var copy4 = FastSerializer.Deserialize<Dictionary<string, User>>(data5);
Console.WriteLine($"Dictionary count: {copy4.Count}, key2 user name: {copy4["key2"].Name}");
// Server and Client test with messages
var server = new Server<Message>(12345);
server.MessageReceived += async (msg, client) =>
{
Console.WriteLine($"Server received: {msg.Text}, Number={msg.Number}");
await server.SendAsync(new Message { Text = "Ack: " + msg.Text, Number = msg.Number }, client);
};
_ = server.StartAsync();
var client = new Client<Message>("127.0.0.1", 12345);
client.MessageReceived += async msg =>
{
Console.WriteLine($"Client received: {msg.Text}, Number={msg.Number}");
await client.SendAsync(new Message { Text = $"Got your {msg.Number}", Number = 999 });
};
await client.ConnectAsync();
await client.SendAsync(new Message { Text = "Hello Server", Number = 123 });
// Send nested objects and big collections through server
await client.SendAsync(new Message { Text = $"Nested test: {copy3[0].Name}", Number = copy3.Count });
await client.SendAsync(new Message { Text = $"Big list last value: {copy1[^1]}", Number = copy1.Count });
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
}
public class Address
{
public string Street { get; set; } = "";
public string City { get; set; } = "";
}
public class User
{
public int Id { get; set; }
public string Name { get; set; } = "";
public bool IsAdmin { get; set; }
public Address Home { get; set; } = new Address();
}
public class Message
{
public string Text { get; set; } = "";
public int Number { get; set; }
}
```

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