MQTTnet

MQTTnet is a .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.

Features

General

• Async support
• TLS 1.2 support for client and server (but not UWP servers)
• Extensible communication channels (i.e. In-Memory, TCP, TCP+TLS, WS)
• Lightweight (only the low level implementation of MQTT, no overhead)
• Performance optimized (processing ~27.000 messages / second)*
• Interfaces included for mocking and testing
• Access to internal trace messages
• Unit tested (58+ tests)

* Tested on local machine with MQTTnet client and server running in the same process using the TCP channel. The app for verification is part of this repository and stored in /Tests/MQTTnet.TestApp.NetFramework.

Client

• Rx support (via another project)
• Communication via TCP (+TLS) or WS (WebSocket)

Server (broker)

• List of connected clients available
• Supports connected clients with different protocol versions at the same time
• Able to publish its own messages (no loopback client required)
• Able to receive every messages (no loopback client required)
• Extensible client credential validation
• Retained messages are supported including persisting via interface methods (own implementation required)

Supported frameworks

• .NET Standard 1.3+
• .NET Core 1.1+
• .NET Core App 1.1+
• .NET Framework 4.5.2+ (x86, x64, AnyCPU)
• Universal Windows (UWP) 10.0.10240+ (x86, x64, ARM, AnyCPU)
• Mono 5.2+

Supported MQTT versions

• 3.1.1
• 3.1.0

Nuget

This library is available as a nuget package: https://www.nuget.org/packages/MQTTnet/

Examples

Please find examples and the documentation at the Wiki of this repository (https://github.com/chkr1011/MQTTnet/wiki).

Contributions

If you want to contribute to this project just create a pull request.

References

This library is used in the following projects:

• MQTT Client Rx (Wrapper for Reactive Extensions, https://github.com/1iveowl/MQTTClient.rx)
• HA4IoT (Open Source Home Automation system for .NET, https://github.com/chkr1011/HA4IoT)

If you use this library and want to see your project here please let me know.