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EonaCat
2025-10-26 08:04:44 +01:00
parent ceddd08e33
commit 153117727e
20 changed files with 1328 additions and 126 deletions
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93
.gitignore vendored
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@@ -2,7 +2,7 @@
## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.
##
## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
# User-specific files
*.rsuser
@@ -14,9 +14,6 @@
# User-specific files (MonoDevelop/Xamarin Studio)
*.userprefs
# Mono auto generated files
mono_crash.*
# Build results
[Dd]ebug/
[Dd]ebugPublic/
@@ -24,14 +21,10 @@ mono_crash.*
[Rr]eleases/
x64/
x86/
[Ww][Ii][Nn]32/
[Aa][Rr][Mm]/
[Aa][Rr][Mm]64/
bld/
[Bb]in/
[Oo]bj/
[Ll]og/
[Ll]ogs/
# Visual Studio 2015/2017 cache/options directory
.vs/
@@ -45,10 +38,9 @@ Generated\ Files/
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
# NUnit
# NUNIT
*.VisualState.xml
TestResult.xml
nunit-*.xml
# Build Results of an ATL Project
[Dd]ebugPS/
@@ -63,9 +55,6 @@ project.lock.json
project.fragment.lock.json
artifacts/
# ASP.NET Scaffolding
ScaffoldingReadMe.txt
# StyleCop
StyleCopReport.xml
@@ -83,8 +72,6 @@ StyleCopReport.xml
*.pgc
*.pgd
*.rsp
# but not Directory.Build.rsp, as it configures directory-level build defaults
!Directory.Build.rsp
*.sbr
*.tlb
*.tli
@@ -93,7 +80,6 @@ StyleCopReport.xml
*.tmp_proj
*_wpftmp.csproj
*.log
*.tlog
*.vspscc
*.vssscc
.builds
@@ -135,6 +121,9 @@ _ReSharper*/
*.[Rr]e[Ss]harper
*.DotSettings.user
# JustCode is a .NET coding add-in
.JustCode
# TeamCity is a build add-in
_TeamCity*
@@ -145,11 +134,6 @@ _TeamCity*
.axoCover/*
!.axoCover/settings.json
# Coverlet is a free, cross platform Code Coverage Tool
coverage*.json
coverage*.xml
coverage*.info
# Visual Studio code coverage results
*.coverage
*.coveragexml
@@ -197,8 +181,6 @@ PublishScripts/
# NuGet Packages
*.nupkg
# NuGet Symbol Packages
*.snupkg
# The packages folder can be ignored because of Package Restore
**/[Pp]ackages/*
# except build/, which is used as an MSBuild target.
@@ -223,14 +205,12 @@ BundleArtifacts/
Package.StoreAssociation.xml
_pkginfo.txt
*.appx
*.appxbundle
*.appxupload
# Visual Studio cache files
# files ending in .cache can be ignored
*.[Cc]ache
# but keep track of directories ending in .cache
!?*.[Cc]ache/
!*.[Cc]ache/
# Others
ClientBin/
@@ -274,9 +254,6 @@ ServiceFabricBackup/
*.bim.layout
*.bim_*.settings
*.rptproj.rsuser
*- [Bb]ackup.rdl
*- [Bb]ackup ([0-9]).rdl
*- [Bb]ackup ([0-9][0-9]).rdl
# Microsoft Fakes
FakesAssemblies/
@@ -297,17 +274,6 @@ node_modules/
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
*.vbw
# Visual Studio 6 auto-generated project file (contains which files were open etc.)
*.vbp
# Visual Studio 6 workspace and project file (working project files containing files to include in project)
*.dsw
*.dsp
# Visual Studio 6 technical files
*.ncb
*.aps
# Visual Studio LightSwitch build output
**/*.HTMLClient/GeneratedArtifacts
**/*.DesktopClient/GeneratedArtifacts
@@ -323,6 +289,10 @@ paket-files/
# FAKE - F# Make
.fake/
# JetBrains Rider
.idea/
*.sln.iml
# CodeRush personal settings
.cr/personal
@@ -364,53 +334,10 @@ ASALocalRun/
# Local History for Visual Studio
.localhistory/
# Visual Studio History (VSHistory) files
.vshistory/
# BeatPulse healthcheck temp database
healthchecksdb
# Backup folder for Package Reference Convert tool in Visual Studio 2017
MigrationBackup/
# Ionide (cross platform F# VS Code tools) working folder
.ionide/
# Fody - auto-generated XML schema
FodyWeavers.xsd
# VS Code files for those working on multiple tools
.vscode/*
!.vscode/settings.json
!.vscode/tasks.json
!.vscode/launch.json
!.vscode/extensions.json
*.code-workspace
# Local History for Visual Studio Code
.history/
# Windows Installer files from build outputs
*.cab
*.msi
*.msix
*.msm
*.msp
# JetBrains Rider
*.sln.iml
# ---> VisualStudioCode
.vscode/*
!.vscode/settings.json
!.vscode/tasks.json
!.vscode/launch.json
!.vscode/extensions.json
!.vscode/*.code-snippets
# Local History for Visual Studio Code
.history/
# Built Visual Studio Code Extensions
*.vsix

20
EonaCat.FastNetwork.Tester.Client/EonaCat.FastNetwork.Tester.Client.csproj Normal file
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@@ -0,0 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\EonaCat.FastNetwork\EonaCat.FastNetwork.csproj" />
</ItemGroup>
<ItemGroup>
<None Update="client.pfx">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</None>
</ItemGroup>
</Project>

45
EonaCat.FastNetwork.Tester.Client/Program.cs Normal file
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@@ -0,0 +1,45 @@
using EonaCat.FastNetwork;
using EonaCat.FastNetwork.Models;
using System.Text;
var config = new FastNetworkConfig
{
Protocol = ProtocolType.TCP,
UseAES = true,
AESKey = "your-secret-key",
AutoReconnect = true,
MaxConnections = 100,
UseSSL = true,
Certificates = new System.Security.Cryptography.X509Certificates.X509CertificateCollection
{
new System.Security.Cryptography.X509Certificates.X509Certificate2("client.pfx", "p@ss")
}
};
List<FastNetworkClient> clients = new List<FastNetworkClient>();
var totalClients = 100;
for (int clientNumber = 0; clientNumber < totalClients; clientNumber++)
{
var client = new FastNetworkClient(config);
client.Nickname = $"Player{clientNumber}";
client.MessageReceived += (s, data) =>
{
Console.WriteLine($"Received: {Encoding.UTF8.GetString(data)}");
};
await client.ConnectAsync("127.0.0.1", 8080);
clients.Add(client);
}
Console.WriteLine($"{totalClients} clients started on port 8080");
var i = 0;
while (true)
{
i++;
for (int clientNumber = 0; clientNumber < totalClients; clientNumber++)
{
var client = clients[clientNumber];
var randomMessage = $"RANDOM CRAP {i}";
await client.SendAsync(Encoding.UTF8.GetBytes(randomMessage));
}
await Task.Delay(1000);
}

20
EonaCat.FastNetwork.Tester.Server/EonaCat.FastNetwork.Tester.Server.csproj Normal file
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@@ -0,0 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\EonaCat.FastNetwork\EonaCat.FastNetwork.csproj" />
</ItemGroup>
<ItemGroup>
<None Update="server.pfx">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</None>
</ItemGroup>
</Project>

35
EonaCat.FastNetwork.Tester.Server/Program.cs Normal file
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@@ -0,0 +1,35 @@
using EonaCat.FastNetwork;
using EonaCat.FastNetwork.Models;
using System.Net.Sockets;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using ProtocolType = EonaCat.FastNetwork.Models.ProtocolType;
var config = new FastNetworkConfig
{
Protocol = ProtocolType.TCP,
UseAES = true,
AESKey = "your-secret-key",
AutoReconnect = true,
MaxConnections = 100,
UseSSL = true,
Certificates = new System.Security.Cryptography.X509Certificates.X509CertificateCollection
{
new System.Security.Cryptography.X509Certificates.X509Certificate2("server.pfx", "p@ss")
}
};
var server = new FastNetworkServer(config);
server.MessageReceived += (s, msg) => {
Console.WriteLine($"Received from {msg.SenderId} => {Encoding.UTF8.GetString(msg.Data)}");
server.SendToClientAsync(msg.SenderId, msg.Data).ConfigureAwait(false);
};
server.ClientConnected += (s, client) => {
Console.Title = $"Connected Clients: {server.Clients.Count()}";
Console.WriteLine($"Client {client.Id} connected");
};
await server.StartAsync(8080);
Console.WriteLine("Server started on port 8080");
Console.ReadKey();

42
EonaCat.FastNetwork.sln Normal file
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@@ -0,0 +1,42 @@

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.14.36603.0
MinimumVisualStudioVersion = 10.0.40219.1
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EonaCat.FastNetwork", "EonaCat.FastNetwork\EonaCat.FastNetwork.csproj", "{4E4152E9-EDB2-48C4-B453-C3ACA105FC46}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EonaCat.FastNetwork.Tester.Client", "EonaCat.FastNetwork.Tester.Client\EonaCat.FastNetwork.Tester.Client.csproj", "{22BFB36C-5597-4AEA-9E04-4FAB1E687D65}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EonaCat.FastNetwork.Tester.Server", "EonaCat.FastNetwork.Tester.Server\EonaCat.FastNetwork.Tester.Server.csproj", "{26911727-D36B-45B8-A56C-D761D3486AF7}"
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{8EC462FD-D22E-90A8-E5CE-7E832BA40C5D}"
ProjectSection(SolutionItems) = preProject
Readme.md = Readme.md
EndProjectSection
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{4E4152E9-EDB2-48C4-B453-C3ACA105FC46}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{4E4152E9-EDB2-48C4-B453-C3ACA105FC46}.Debug|Any CPU.Build.0 = Debug|Any CPU
{4E4152E9-EDB2-48C4-B453-C3ACA105FC46}.Release|Any CPU.ActiveCfg = Release|Any CPU
{4E4152E9-EDB2-48C4-B453-C3ACA105FC46}.Release|Any CPU.Build.0 = Release|Any CPU
{22BFB36C-5597-4AEA-9E04-4FAB1E687D65}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{22BFB36C-5597-4AEA-9E04-4FAB1E687D65}.Debug|Any CPU.Build.0 = Debug|Any CPU
{22BFB36C-5597-4AEA-9E04-4FAB1E687D65}.Release|Any CPU.ActiveCfg = Release|Any CPU
{22BFB36C-5597-4AEA-9E04-4FAB1E687D65}.Release|Any CPU.Build.0 = Release|Any CPU
{26911727-D36B-45B8-A56C-D761D3486AF7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{26911727-D36B-45B8-A56C-D761D3486AF7}.Debug|Any CPU.Build.0 = Debug|Any CPU
{26911727-D36B-45B8-A56C-D761D3486AF7}.Release|Any CPU.ActiveCfg = Release|Any CPU
{26911727-D36B-45B8-A56C-D761D3486AF7}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {6B8B56DF-8760-4D4C-A93A-04F05B4B9ACE}
EndGlobalSection
EndGlobal

38
EonaCat.FastNetwork/EonaCat.FastNetwork.csproj Normal file
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@@ -0,0 +1,38 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.1</TargetFramework>
<Nullable>enable</Nullable>
<Title>EonaCat.FastNetwork</Title>
<Company>EonaCat (Jeroen Saey)</Company>
<Authors>EonaCat (Jeroen Saey)</Authors>
<Version>1.0.0</Version>
<PackageProjectUrl>https://git.saey.me/EonaCat/EonaCat.FastNetwork</PackageProjectUrl>
<Copyright>EonaCat (Jeroen Saey)</Copyright>
<PackageIcon>EonaCat.png</PackageIcon>
<PackageReadmeFile>README.md</PackageReadmeFile>
<RepositoryUrl>https://git.saey.me/EonaCat/EonaCat.FastNetwork</RepositoryUrl>
<PackageId>EonaCat.FastNetwork</PackageId>
<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
<Description>A **lightweight, asynchronous, and secure networking framework** for C# that provides TCP and UDP client-server communication with built-in **AES encryption**, **SSL/TLS support**, **auto-reconnection**, and **heartbeat monitoring**.</Description>
<PackageReleaseNotes>A **lightweight, asynchronous, and secure networking framework** for C# that provides TCP and UDP client-server communication with built-in **AES encryption**, **SSL/TLS support**, **auto-reconnection**, and **heartbeat monitoring**.</PackageReleaseNotes>
<PackageTags>EonaCat, TCP, UDP, Sockets, Auto Reconnect, SSL, AES, Secure, Fast, 100k connections, Speed, Jeroen, Saey</PackageTags>
<PackageLicenseFile>LICENSE</PackageLicenseFile>
</PropertyGroup>
<ItemGroup>
<None Include="..\EonaCat.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>

287
EonaCat.FastNetwork/FastNetworkClient.cs Normal file
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@@ -0,0 +1,287 @@
using EonaCat.FastNetwork.Models;
using System;
using System.IO;
using System.Net;
using System.Net.Security;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using ProtocolType = EonaCat.FastNetwork.Models.ProtocolType;
namespace EonaCat.FastNetwork
{
public class FastNetworkClient
{
private readonly FastNetworkConfig _config;
private TcpClient _tcpClient;
private UdpClient _udpClient;
private Stream _stream;
private IPEndPoint _serverEndPoint;
private CancellationTokenSource _cancellationTokenSource;
private int _reconnectAttempts;
private readonly AESEncryption _aes;
public string ClientId { get; private set; }
public string Nickname { get; set; }
public ConnectionState State { get; private set; }
public long BytesSent { get; private set; }
public long BytesReceived { get; private set; }
public event EventHandler<ConnectionState> StateChanged;
public event EventHandler<byte[]> MessageReceived;
public event EventHandler<string> ErrorOccurred;
public FastNetworkClient(FastNetworkConfig config)
{
_config = config ?? new FastNetworkConfig();
ClientId = Guid.NewGuid().ToString();
State = ConnectionState.Disconnected;
if (_config.UseAES && !string.IsNullOrEmpty(_config.AESKey))
{
_aes = new AESEncryption(_config.AESKey);
}
}
public async Task ConnectAsync(string host, int port)
{
if (State == ConnectionState.Connected)
{
return;
}
ChangeState(ConnectionState.Connecting);
_serverEndPoint = new IPEndPoint(IPAddress.Parse(host), port);
try
{
if (_config.Protocol == ProtocolType.TCP)
{
await ConnectTcpAsync();
}
else
{
ConnectUdp();
}
_reconnectAttempts = 0;
ChangeState(ConnectionState.Connected);
_cancellationTokenSource = new CancellationTokenSource();
_ = ReceiveDataAsync(_cancellationTokenSource.Token);
if (_config.HeartbeatIntervalMs > 0)
{
_ = SendHeartbeatAsync(_cancellationTokenSource.Token);
}
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Connection error: {ex.Message}");
ChangeState(ConnectionState.Failed);
if (_config.AutoReconnect)
{
_ = ReconnectAsync();
}
}
}
private async Task ConnectTcpAsync()
{
_tcpClient = new TcpClient();
await _tcpClient.ConnectAsync(_serverEndPoint.Address, _serverEndPoint.Port);
Stream stream = _tcpClient.GetStream();
if (_config.UseSSL)
{
var sslStream = new SslStream(stream, false, (sender, cert, chain, errors) => true);
await sslStream.AuthenticateAsClientAsync(_serverEndPoint.Address.ToString(), clientCertificates: _config.Certificates, false);
stream = sslStream;
}
_stream = stream;
}
private void ConnectUdp()
{
_udpClient = new UdpClient();
_udpClient.Connect(_serverEndPoint);
}
public async Task DisconnectAsync()
{
_cancellationTokenSource?.Cancel();
_stream?.Dispose();
_tcpClient?.Close();
_udpClient?.Close();
ChangeState(ConnectionState.Disconnected);
await Task.CompletedTask;
}
public async Task SendAsync(byte[] data)
{
if (State != ConnectionState.Connected)
{
throw new InvalidOperationException("Client is not connected");
}
try
{
if (_config.UseAES && _aes != null)
{
data = _aes.Encrypt(data);
}
if (_config.Protocol == ProtocolType.TCP)
{
await _stream.WriteAsync(data, 0, data.Length);
await _stream.FlushAsync();
}
else
{
await _udpClient.SendAsync(data, data.Length);
}
BytesSent += data.Length;
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Send error: {ex.Message}");
if (_config.AutoReconnect)
{
_ = ReconnectAsync();
}
}
}
private async Task ReceiveDataAsync(CancellationToken token)
{
var buffer = new byte[_config.BufferSize];
while (!token.IsCancellationRequested && State == ConnectionState.Connected)
{
try
{
if (_config.Protocol == ProtocolType.TCP)
{
var bytesRead = await _stream.ReadAsync(buffer, 0, buffer.Length, token);
if (bytesRead == 0)
{
if (_config.AutoReconnect)
{
_ = ReconnectAsync();
}
break;
}
var data = new byte[bytesRead];
Array.Copy(buffer, data, bytesRead);
if (_config.UseAES && _aes != null)
{
data = _aes.Decrypt(data);
}
BytesReceived += bytesRead;
MessageReceived?.Invoke(this, data);
}
else
{
var result = await _udpClient.ReceiveAsync();
var data = result.Buffer;
if (_config.UseAES && _aes != null)
{
data = _aes.Decrypt(data);
}
BytesReceived += data.Length;
MessageReceived?.Invoke(this, data);
}
}
catch (OperationCanceledException)
{
break;
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Receive error: {ex.Message}");
if (_config.AutoReconnect)
{
_ = ReconnectAsync();
}
break;
}
}
}
private async Task ReconnectAsync()
{
if (State == ConnectionState.Reconnecting)
{
return;
}
if (_config.MaxReconnectAttempts > 0 && _reconnectAttempts >= _config.MaxReconnectAttempts)
{
ChangeState(ConnectionState.Failed);
return;
}
ChangeState(ConnectionState.Reconnecting);
_reconnectAttempts++;
await Task.Delay(_config.ReconnectDelayMs);
try
{
await DisconnectAsync();
await ConnectAsync(_serverEndPoint.Address.ToString(), _serverEndPoint.Port);
}
catch
{
if (_config.AutoReconnect)
{
_ = ReconnectAsync();
}
}
}
private async Task SendHeartbeatAsync(CancellationToken token)
{
while (!token.IsCancellationRequested && State == ConnectionState.Connected)
{
try
{
await Task.Delay(_config.HeartbeatIntervalMs, token);
await SendAsync(Encoding.UTF8.GetBytes("HEARTBEAT"));
}
catch (OperationCanceledException)
{
break;
}
catch
{
// Do nothing
}
}
}
private void ChangeState(ConnectionState newState)
{
if (State != newState)
{
State = newState;
StateChanged?.Invoke(this, newState);
}
}
}
}

372
EonaCat.FastNetwork/FastNetworkServer.cs Normal file
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@@ -0,0 +1,372 @@
using EonaCat.FastNetwork.Models;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Net.Sockets;
using System.Threading;
using System.Threading.Tasks;
using ProtocolType = EonaCat.FastNetwork.Models.ProtocolType;
namespace EonaCat.FastNetwork
{
public class FastNetworkServer
{
private readonly FastNetworkConfig _config;
private TcpListener _tcpListener;
private UdpClient _udpListener;
private readonly ConcurrentDictionary<string, ConnectedClient> _clients;
private readonly ConcurrentDictionary<string, string> _nicknameToId;
private CancellationTokenSource _cancellationTokenSource;
private bool _isRunning;
private readonly AESEncryption _aes;
private readonly SemaphoreSlim _connectionSemaphore;
public event EventHandler<ClientInfo> ClientConnected;
public event EventHandler<ClientInfo> ClientDisconnected;
public event EventHandler<FastNetworkMessage> MessageReceived;
public event EventHandler<string> ErrorOccurred;
public int ConnectedClientsCount => _clients.Count;
public IEnumerable<ClientInfo> Clients => _clients.Values.Select(c => c.Info);
public FastNetworkServer(FastNetworkConfig config)
{
_config = config ?? new FastNetworkConfig();
_clients = new ConcurrentDictionary<string, ConnectedClient>();
_nicknameToId = new ConcurrentDictionary<string, string>();
_connectionSemaphore = new SemaphoreSlim(_config.MaxConnections, _config.MaxConnections);
if (_config.UseAES && !string.IsNullOrEmpty(_config.AESKey))
{
_aes = new AESEncryption(_config.AESKey);
}
}
public async Task StartAsync(int port)
{
if (_isRunning)
{
return;
}
_cancellationTokenSource = new CancellationTokenSource();
_isRunning = true;
try
{
if (_config.Protocol == ProtocolType.TCP)
{
_tcpListener = new TcpListener(IPAddress.Any, port);
_tcpListener.Start();
_ = AcceptTcpClientsAsync(_cancellationTokenSource.Token);
}
else
{
_udpListener = new UdpClient(port);
_ = ReceiveUdpDataAsync(_cancellationTokenSource.Token);
}
_ = MonitorClientsAsync(_cancellationTokenSource.Token);
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Server start error: {ex.Message}");
}
await Task.CompletedTask;
}
public async Task StopAsync()
{
if (!_isRunning)
{
return;
}
_isRunning = false;
_cancellationTokenSource?.Cancel();
foreach (var client in _clients.Values.ToList())
{
await DisconnectClientAsync(client.Info.Id);
}
_tcpListener?.Stop();
_udpListener?.Close();
}
private async Task AcceptTcpClientsAsync(CancellationToken token)
{
while (!token.IsCancellationRequested)
{
try
{
await _connectionSemaphore.WaitAsync(token);
var tcpClient = await _tcpListener.AcceptTcpClientAsync();
_ = HandleTcpClientAsync(tcpClient, token);
}
catch (OperationCanceledException)
{
break;
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Accept client error: {ex.Message}");
_connectionSemaphore.Release();
}
}
}
private async Task HandleTcpClientAsync(TcpClient tcpClient, CancellationToken token)
{
var clientId = Guid.NewGuid().ToString();
var client = new ConnectedClient
{
Id = clientId,
TcpClient = tcpClient,
Info = new ClientInfo
{
Id = clientId,
RemoteEndPoint = (IPEndPoint)tcpClient.Client.RemoteEndPoint,
ConnectedAt = DateTime.UtcNow,
LastActivity = DateTime.UtcNow,
State = ConnectionState.Connected
}
};
try
{
Stream stream = tcpClient.GetStream();
if (_config.UseSSL && _config.Certificates != null)
{
var sslStream = new SslStream(stream, false);
await sslStream.AuthenticateAsServerAsync(_config.Certificates[0]);
stream = sslStream;
}
client.Stream = stream;
_clients.TryAdd(clientId, client);
ClientConnected?.Invoke(this, client.Info);
await ReceiveTcpDataAsync(client, token);
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Client {clientId} error: {ex.Message}");
}
finally
{
await DisconnectClientAsync(clientId);
}
}
private async Task ReceiveTcpDataAsync(ConnectedClient client, CancellationToken token)
{
var buffer = new byte[_config.BufferSize];
while (!token.IsCancellationRequested && client.TcpClient.Connected)
{
try
{
var bytesRead = await client.Stream.ReadAsync(buffer, 0, buffer.Length, token);
if (bytesRead == 0)
{
break;
}
client.Info.LastActivity = DateTime.UtcNow;
client.Info.BytesReceived += bytesRead;
var data = new byte[bytesRead];
Array.Copy(buffer, data, bytesRead);
if (_config.UseAES && _aes != null)
{
data = _aes.Decrypt(data);
}
var message = new FastNetworkMessage
{
SenderId = client.Info.Id,
Data = data,
Timestamp = DateTime.UtcNow
};
MessageReceived?.Invoke(this, message);
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Receive error from {client.Info.Id}: {ex.Message}");
break;
}
}
}
private async Task ReceiveUdpDataAsync(CancellationToken token)
{
while (!token.IsCancellationRequested)
{
try
{
var result = await _udpListener.ReceiveAsync();
var data = result.Buffer;
if (_config.UseAES && _aes != null)
{
data = _aes.Decrypt(data);
}
var clientKey = result.RemoteEndPoint.ToString();
var message = new FastNetworkMessage
{
SenderId = clientKey,
Data = data,
Timestamp = DateTime.UtcNow
};
MessageReceived?.Invoke(this, message);
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"UDP receive error: {ex.Message}");
}
}
}
public async Task SendToClientAsync(string clientId, byte[] data)
{
if (!_clients.TryGetValue(clientId, out var client))
{
return;
}
try
{
if (_config.UseAES && _aes != null)
{
data = _aes.Encrypt(data);
}
if (_config.Protocol == ProtocolType.TCP)
{
await client.Stream.WriteAsync(data, 0, data.Length);
await client.Stream.FlushAsync();
}
else
{
await _udpListener.SendAsync(data, data.Length, client.Info.RemoteEndPoint);
}
client.Info.BytesSent += data.Length;
client.Info.LastActivity = DateTime.UtcNow;
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Send error to {clientId}: {ex.Message}");
}
}
public async Task BroadcastAsync(byte[] data, string excludeClientId = null)
{
var tasks = _clients.Values
.Where(c => c.Id != excludeClientId)
.Select(c => SendToClientAsync(c.Id, data));
await Task.WhenAll(tasks);
}
public bool SetNickname(string clientId, string nickname)
{
if (!_clients.TryGetValue(clientId, out var client))
{
return false;
}
// Remove old nickname mapping
if (!string.IsNullOrEmpty(client.Info.Nickname))
{
_nicknameToId.TryRemove(client.Info.Nickname, out _);
}
client.Info.Nickname = nickname;
_nicknameToId[nickname] = clientId;
return true;
}
public string GetClientIdByNickname(string nickname)
{
_nicknameToId.TryGetValue(nickname, out var clientId);
return clientId;
}
private async Task DisconnectClientAsync(string clientId)
{
if (_clients.TryRemove(clientId, out var client))
{
try
{
if (!string.IsNullOrEmpty(client.Info.Nickname))
{
_nicknameToId.TryRemove(client.Info.Nickname, out _);
}
client.Stream?.Dispose();
client.TcpClient?.Close();
ClientDisconnected?.Invoke(this, client.Info);
}
finally
{
_connectionSemaphore.Release();
}
}
await Task.CompletedTask;
}
private async Task MonitorClientsAsync(CancellationToken token)
{
while (!token.IsCancellationRequested)
{
try
{
await Task.Delay(_config.HeartbeatIntervalMs, token);
var now = DateTime.UtcNow;
var timeoutClients = _clients.Values
.Where(c => (now - c.Info.LastActivity).TotalMilliseconds > _config.TimeoutMs)
.ToList();
foreach (var client in timeoutClients)
{
await DisconnectClientAsync(client.Id);
}
}
catch (OperationCanceledException)
{
break;
}
catch (Exception ex)
{
ErrorOccurred?.Invoke(this, $"Monitor error: {ex.Message}");
}
}
}
private class ConnectedClient
{
public string Id { get; set; }
public TcpClient TcpClient { get; set; }
public Stream Stream { get; set; }
public ClientInfo Info { get; set; }
}
}
}

58
EonaCat.FastNetwork/Models/AESEncryption.cs Normal file
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using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace EonaCat.FastNetwork.Models
{
public class AESEncryption
{
private readonly byte[] _key;
private readonly byte[] _iv;
public AESEncryption(string key)
{
using (var sha = SHA256.Create())
{
_key = sha.ComputeHash(Encoding.UTF8.GetBytes(key));
}
_iv = new byte[16];
}
public byte[] Encrypt(byte[] data)
{
using (var aes = Aes.Create())
{
aes.Key = _key;
aes.IV = _iv;
using (var encryptor = aes.CreateEncryptor())
using (var ms = new MemoryStream())
{
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
cs.Write(data, 0, data.Length);
}
return ms.ToArray();
}
}
}
public byte[] Decrypt(byte[] data)
{
using (var aes = Aes.Create())
{
aes.Key = _key;
aes.IV = _iv;
using (var decryptor = aes.CreateDecryptor())
using (var ms = new MemoryStream(data))
using (var cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read))
using (var result = new MemoryStream())
{
cs.CopyTo(result);
return result.ToArray();
}
}
}
}
}

19
EonaCat.FastNetwork/Models/ClientInfo.cs Normal file
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using System;
using System.Collections.Generic;
using System.Net;
namespace EonaCat.FastNetwork.Models
{
public class ClientInfo
{
public string Id { get; set; }
public string Nickname { get; set; }
public IPEndPoint RemoteEndPoint { get; set; }
public DateTime ConnectedAt { get; set; }
public DateTime LastActivity { get; set; }
public long BytesSent { get; set; }
public long BytesReceived { get; set; }
public ConnectionState State { get; set; }
public Dictionary<string, object> Metadata { get; set; } = new Dictionary<string, object>();
}
}

11
EonaCat.FastNetwork/Models/ConnectionState.cs Normal file
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namespace EonaCat.FastNetwork.Models
{
public enum ConnectionState
{
Disconnected,
Connecting,
Connected,
Reconnecting,
Failed
}
}

21
EonaCat.FastNetwork/Models/FastNetworkConfig.cs Normal file
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using System.Security.Cryptography.X509Certificates;
namespace EonaCat.FastNetwork.Models
{
public class FastNetworkConfig
{
public ProtocolType Protocol { get; set; } = ProtocolType.TCP;
public bool UseSSL { get; set; } = false;
public X509CertificateCollection Certificates { get; set; }
public bool UseAES { get; set; } = false;
public string AESKey { get; set; } = null;
public bool AutoReconnect { get; set; } = true;
public int ReconnectDelayMs { get; set; } = 3000;
public int MaxReconnectAttempts { get; set; } = -1; // -1 = infinite
public int BufferSize { get; set; } = 8192;
public int MaxConnections { get; set; } = 100000;
public bool UseCompression { get; set; } = false;
public int HeartbeatIntervalMs { get; set; } = 30000;
public int TimeoutMs { get; set; } = 60000;
}
}

13
EonaCat.FastNetwork/Models/FastNetworkMessage.cs Normal file
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@@ -0,0 +1,13 @@
using System;
namespace EonaCat.FastNetwork.Models
{
public class FastNetworkMessage
{
public string SenderId { get; set; }
public string RecipientId { get; set; }
public byte[] Data { get; set; }
public DateTime Timestamp { get; set; }
public bool IsSystemMessage { get; set; }
}
}

8
EonaCat.FastNetwork/ProtocolType.cs Normal file
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@@ -0,0 +1,8 @@
namespace EonaCat.FastNetwork.Models
{
public enum ProtocolType
{
TCP,
UDP
}
}

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213
LICENSE
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@@ -1,73 +1,204 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
https://EonaCat.com/license/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
OF SOFTWARE BY EONACAT (JEROEN SAEY)
1. Definitions.
1. Definitions.
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"License" shall mean the terms and conditions for use, reproduction,
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"Legal Entity" shall mean the union of the acting entity and all
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control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
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and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
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"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
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represent, as a whole, an original work of authorship. For the purposes
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END OF TERMS AND CONDITIONS
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
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
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same "printed page" as the copyright notice for easier
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Copyright 2025 EonaCat
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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159
README.md
View File

@@ -1,3 +1,158 @@
# EonaCat.FastNetwork
# 🔥 EonaCat.FastNetwork 🔥
A **lightweight, asynchronous, and secure networking framework** for C# that provides TCP and UDP client-server communication with built-in **AES encryption**, **SSL/TLS support**, **auto-reconnection**, and **heartbeat monitoring**.
This project contains:
- `FastNetworkClient` — A configurable client capable of connecting to servers over TCP or UDP.
- `FastNetworkServer` — A high-performance server capable of managing multiple clients, broadcasting messages, and monitoring connections.
---
## 🚀 Features
✅ Supports both **TCP** and **UDP** communication
✅ **Asynchronous I/O** with `async/await`
✅ Optional **AES encryption** for secure communication
✅ Optional **SSL/TLS** (via `SslStream`)
✅ **Automatic reconnection** logic for clients
✅ **Heartbeat system** for connection health checks
✅ **Client nickname management**
✅ **Server broadcasting and targeted messaging**
✅ **Configurable limits** (buffer size, timeouts, max connections, etc.)
---
## ⚙️ Configuration
Both the client and server use a `FastNetworkConfig` object to control behavior.
### Example Configuration
```csharp
var config = new FastNetworkConfig
{
Protocol = ProtocolType.TCP,
UseAES = true,
AESKey = "your-256-bit-key",
UseSSL = false,
AutoReconnect = true,
HeartbeatIntervalMs = 5000,
ReconnectDelayMs = 3000,
MaxReconnectAttempts = 5,
TimeoutMs = 10000,
BufferSize = 4096
};
```
💻 Usage:
🤩 Server Example
```csharp
using EonaCat.FastNetwork;
using EonaCat.FastNetwork.Models;
using System;
using System.Text;
class Program
{
static async Task Main()
{
var config = new FastNetworkConfig
{
Protocol = ProtocolType.TCP,
UseAES = true,
AESKey = "your-256-bit-key",
AutoReconnect = true
};
var server = new FastNetworkServer(config);
server.ClientConnected += (s, info) =>
{
Console.WriteLine($"Client connected: {info.Id} ({info.RemoteEndPoint})");
};
server.MessageReceived += async (s, msg) =>
{
Console.WriteLine($"Message from {msg.SenderId}: {Encoding.UTF8.GetString(msg.Data)}");
await server.SendToClientAsync(msg.SenderId, Encoding.UTF8.GetBytes("Message received!"));
};
server.ClientDisconnected += (s, info) =>
{
Console.WriteLine($"Client disconnected: {info.Id}");
};
await server.StartAsync(5000);
Console.WriteLine("Server running on port 5000...");
Console.ReadLine();
}
}
```
😋 Client Example
```csharp
using EonaCat.FastNetwork;
using EonaCat.FastNetwork.Models;
using System;
using System.Text;
class Program
{
static async Task Main()
{
var config = new FastNetworkConfig
{
Protocol = ProtocolType.TCP,
UseAES = true,
AESKey = "your-256-bit-key",
AutoReconnect = true
};
var client = new FastNetworkClient(config);
client.StateChanged += (s, state) =>
{
Console.WriteLine($"Client state: {state}");
};
client.MessageReceived += (s, data) =>
{
Console.WriteLine($"Received: {Encoding.UTF8.GetString(data)}");
};
await client.ConnectAsync("127.0.0.1", 5000);
Console.WriteLine("Connected to server.");
await client.SendAsync(Encoding.UTF8.GetBytes("Hello Server!"));
Console.ReadLine();
}
}
```
🔒 Security Options
🐦‍🔥AES Encryption
Enable AES encryption by setting:
```csharp
config.UseAES = true;
config.AESKey = "your-256-bit-secret-key";
```
🦅SSL/TLS
Enable SSL by providing a certificate:
```csharp
config.UseSSL = true;
config.Certificates = new[] { yourX509Certificate };
```
🔁 Auto-Reconnect & Heartbeat
The client will automatically attempt to reconnect if the connection fails, if AutoReconnect = true.
The server uses heartbeats and timeouts to monitor inactive clients and disconnect them.
EonaCat.FastNetwork

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