Standards and platform support

100% managed .NET code with no external dependencies 

  • Rebex WebSocket is written in 100% managed C# code.
  • No external dependencies. It only needs .NET.
  • No open source code used.
  • Fully CLS-compliant.
  • Supports any .NET language (C#, VB.NET, C++/CLI, etc.)
  • Platform-independent code. Same assemblies for both 32-bit and 64-bit applications.

Protocols and RFC specifications 

Rebex WebSocket implements the WebSocket protocol as specified by RFC 6455, and other required protocols and formats. The core functionality consists of the following:

Compatible with third-party implementations 

Rebex WebSocket is compatible with third-party WebSocket implementations and passes the extensive Autobahn Testsuite.

.NET Framework on Windows 

Rebex WebSocket supports the following .NET Framework platforms:

  • .NET Framework 4.8
  • .NET Framework 4.7.x
  • .NET Framework 4.6.x
  • .NET Framework 4.5.x
  • .NET Framework 4.0
  • .NET Framework 3.5 SP1
  • .NET Framework 3.5
  • .NET Framework 3.0
  • .NET Framework 2.0
  • Both 32-bit and 64-bit versions (same DLLs)

Supported IDE versions:

  • Microsoft Visual Studio 2019
  • Microsoft Visual Studio 2017
  • Microsoft Visual Studio 2015
  • Microsoft Visual Studio 2013
  • Microsoft Visual Studio 2012
  • Microsoft Visual Studio 2010

Supported Windows versions:

  • Windows 10
  • Windows Server 2019
  • Windows Server 2016
  • Windows 8.1
  • Windows Server 2012 R2
  • Windows Server 2012
  • Windows Server 2008 R2
  • Windows Server 2008
  • Windows 7 SP1

Rebex WebSocket is known to work on Windows 8, Windows Vista, Windows XP SP3, Windows Server 2003 R2, Windows Embedded Standard 2009 and Windows Embedded POSReady 2009. However, these platforms already reached end-of-life, which means we cannot guarantee support for Rebex WebSocket on these operating systems.

.NET Core 

Rebex WebSocket supports .NET Core platform.

Supported frameworks:

Supported operating systems:

  • Windows 10
  • Windows 10 IoT (.NET Core 3.0 only)
  • Windows 8.1
  • Windows 7 SP1
  • Windows Server 2008 R2 SP1
  • Linux
  • macOS
  • Same DLLs for all platforms (32-bit x86, 64-bit x64, ARM)

.NET Standard 

Rebex WebSocket supports .NET Standard 1.5/2.0 on .NET Core. It also supports .NET Standard 2.0 on Mono 5.14 (or higher). Support for .NET Standard 2.0 on Universal Windows Platform (build 16299 or higher) and Xamarin.Mac (version 3.8 or higher) is experimental.

Mono on Linux 

Rebex WebSocket supports Mono 4.x/5.x on Linux and Apple macOS (OS X).

Xamarin.iOS 

  • Visual Studio with Xamarin.iOS 10.3 or later
  • iOS 10 or later

Xamarin.Android 

  • Visual Studio with Xamarin.Android 8.0 or later

Xamarin.Mac 

Rebex WebSocket features experimental support for Xamarin.Mac 3.8 or later via .NET Standard 2.0.

Universal Windows Platform 

Rebex WebSocket features experimental support for Universal Windows Platform (UWP/UAP) applications on Windows 10 via .NET Standard 2.0.

Supported platforms:

  • Windows 10 (version 1709 or higher)
  • Windows 10 IoT (version 1709 or higher)

In order to use Rebex WebSocket on these platforms, make sure to specify at least Windows 10 Fall Creators Update (10.0; Build 16299) in your Universal Windows project.

Legacy platform support 

Legacy edition of Rebex WebSocket for the following platforms is available as a separate product:

  • .NET Compact Framework 3.5/3.9

Legacy platforms are platforms that are no longer covered by our Standard Support, but have not yet reached End of Life. For details, see the following KB articles:

.NET Compact Framework 

Rebex WebSocket supports .NET Compact Framework on Microsoft's legacy embedded, handheld and mobile platforms based on Windows CE.

Supported frameworks:

  • .NET Compact Framework 3.9
  • .NET Compact Framework 3.5

Supported operating systems:

  • Windows Embedded Compact 2013
  • Windows Embedded Compact 7
  • Windows Embedded Handheld 6.5
  • Windows Embedded CE 6.0 (end-of-life platform)
  • Windows CE 5.0 (end-of-life platform)
  • Windows Mobile 5.0, 6.0, 6.1, 6.5 (end-of-life platforms)

Supported IDE versions:

  • Microsoft Visual Studio 2013
  • Microsoft Visual Studio 2012
  • Microsoft Visual Studio 2008

Please note .NET Compact Framework is a legacy platform, which means that Rebex WebSocket for .NET CF is available as a separate product with different lifecycle and pricing.

XCOPY deployment 

When distributing an application using Rebex WebSocket library, simply copy the following DLL files (.NET assemblies) with your application:

  • Rebex.Common.dll
  • Rebex.Networking.dll
  • Rebex.WebSocket.dll

There is no need to install, configure or distribute anything else to make them work.

Rebex WebSocket license is royalty-free - you can distribute your application to unlimited number of users or computers without any additional fees.