[](https://www.nuget.org/packages/MQTTnet) [](https://bettercodehub.com/) # 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 (62+ 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. But only pull requests which are matching the code style of this library will be accepted. Before creating a pull request please have a look at the library to get an overview of the required style. # References This library is used in the following projects: * MQTT Client Rx (Wrapper for Reactive Extensions, https://github.com/1iveowl/MQTTClient.rx) * Wirehome (Open Source Home Automation system for .NET, https://github.com/chkr1011/Wirehome) If you use this library and want to see your project here please let me know.