Rebex WebSocket

WebSocket library for modern and legacy platforms

Download 30-day free trial Buy from $349
// create an instance of WebSocket client
var client = new WebSocketClient();

// connect to a server
client.Connect("ws://echo.example.org");

// send a text message
client.Send("Hello!");

// receive a text message
string response = client.Receive();
				
Show me more code...
Rebex WebSocket is a WebSocket client library for .NET. It brings TLS 1.2, 1.1, SHA-2, SNI, AES/GCM and other modern security-related features to legacy platforms. Additionally, it supports TLS 1.3 on all mainstream platforms including .NET 3.5 on Windows 7. Rebex WebSocket is designed to offer an easy-to-use API in addition to the advanced .NET ClientWebSocket API.

Why Rebex WebSocket?

Multiplatform WebSocket client

WebSockets are becoming increasingly popular, but support in .NET is far from perfect. Versions of .NET prior to 4.5 don't support WebSockets at all, and even .NET 4.5 only supports WebSockets on Windows 8 or higher.

Rebex WebSocket supports legacy platforms (including .NET Framework 2.0/3.5 and .NET Compact Framework 3.5/3.9) and works on legacy operating systems (Windows Vista, Windows XP SP3, Windows Mobile 5/6, Windows CE, Pocket PC, Windows Embedded Compact). Of course, modern platforms such as .NET Core are supported as well.

TLS 1.2 with SHA-2 certificates on Windows XP and Windows CE; TLS 1.3 on .NET 3.5-4.8 and Windows 7

Rebex WebSocket implements the following modern TLS features:

  • TLS 1.3 on mainstream platforms including .NET 3.5-4.8 on Windows 7 (or Windows XP SP3 with plugins)
  • TLS 1.2, 1.1, 1.0 on all platforms (including .NET Compact Framework 3.5/3.9)
  • Elliptic Curve DSA and Elliptic Curve Diffie-Hellman ciphers (requires a plugin on some platforms)
  • AES/GCM ciphers
  • SHA-2 certificates
  • SHA-2 hashing algorithms
  • Server Name Indication (SNI) extension
  • Renegotiation Indication extension
  • Support for legacy SSL 3.0 protocol
And more...

Platforms

.NET Framework

2.0-4.8

.NET Core

2.1/2.2/3.0/3.1

Mono

4.x, 5.x, 6.x

Xamarin.iOS

Xamarin.iOS 10.3 or later

Xamarin.Android

Xamarin.Android 9.1 or later

Legacy platforms

.NET Compact Framework

3.5, 3.9

Learn more about supported standards and platforms.