TouchSocket is an integrated .NET networking framework that includes modules for socket, TCP, UDP, SSL, named pipes, HTTP, WebSocket, RPC, and more. It offers a
TouchSocket is an integrated .NET networking framework that includes modules for socket, TCP, UDP, SSL, named pipes, HTTP, WebSocket, RPC, and more. It offers a
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TouchSocket is a simple, modern, and high-performance .NET networking framework, supporting C#, VB.NET, F#, and more. It helps you build powerful communication applications such as TCP / UDP / MQTT / WebSocket / SSL / HTTP / Modbus / RPC with ease.
The framework features a highly optimized IOCP/Socket implementation, robust memory pooling, a flexible data-adapter pipeline, and a rich plugin ecosystem including heartbeat, reconnection, SSL, RPC, and more.
Console / WinForm / WPF / MAUI / Avalonia / Blazor / Xamarin / Unity (non-WebGL) / Mono / All C#-based platforms
TouchSocket provides a deeply optimized IOCP design.
| Implementation | Memory Handling | Performance Impact |
|---|---|---|
| Traditional IOCP (Microsoft sample) | Uses a fixed shared buffer; received data must be copied to another buffer | Extra copy → High overhead under load |
| TouchSocket IOCP | Allocates a fresh memory block from the memory pool for each receive | Zero extra copy → Significant performance gain |
In stress tests (100k messages × 64KB), TouchSocket achieved up to 10× faster throughput compared to the traditional model.
The data-adapter pipeline is one of TouchSocket’s core strengths:
Adapters make protocol development clean, modular, and highly reusable.
TouchSocket’s Plugins system allows extending communication behavior across the entire lifecycle:
All via:
.ConfigurePlugins(a => { ... });TouchSocket maintains full compatibility with native Socket semantics while improving:
You can migrate existing Socket code with minimal changes.
Across TCP, UDP, WebSocket, and others, TouchSocket exposes a consistent set of APIs:
client.ConnectAsync(...)
client.SendAsync(...)
client.Received += ...This ensures a low learning curve and fast development.
The framework is optimized with:
Ensuring minimal allocations and low GC pressure during heavy workloads.
The following examples show only the simplest usage. Refer to the documentation for more advanced scenarios.
TcpService service = new TcpService();
service.Connected = (client, e) => EasyTask.CompletedTask;
service.Closed = (client, e) => EasyTask.CompletedTask;
service.Received = (client, e) =>
{
string str = e.Memory.Span.ToString(Encoding.UTF8);
Console.WriteLine($"Received: {str}");
return EasyTask.CompletedTask;
};
await service.StartAsync(7789);TcpClient client = new TcpClient();
client.Connected = (c, e) => EasyTask.CompletedTask;
client.Closed = (c, e) => EasyTask.CompletedTask;
client.Received = (c, e) =>
{
Console.WriteLine(e.Memory.Span.ToString());
return EasyTask.CompletedTask;
};
await client.ConnectAsync("127.0.0.1:7789");
await client.SendAsync("Hello");.ConfigurePlugins(a =>
{
a.UseReconnection();
});Solves packet fragmentation & merging issues.
Supports:
Endianness is configurable:
TouchSocketBitConverter.DefaultEndianType = EndianType.Little;For fixed-header formats such as:
| 1 | 1 | 1 | ********** |For variable-header protocols such as HTTP:
\r\n\r\nContent-LengthA small amount of code can build a complete parser.
Thank you all for supporting TouchSocket. If you have questions, feel free to submit an issue or join the QQ group.
Special thanks to:
TouchSocket is a member of the dotNET China organization.
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