The wolfMQTT library is an implementation of the MQTT Client written in C for embedded use, which supports SSL/TLS via the wolfSSL library. This library was built from the ground up to be multi-platform, space conscious and extensible. And most importantly it integrates with wolfSSL to provide TLS support, for a secure solution out of the gate!

Specifications supported

MQTT v3.1.1 MQTT v5.0 MQTT-SN (Sensor Network) v1.2

Application architecture

Non-blocking support for baremetal apps Multithread for OS/RTOS supporting threads

Callbacks

Publish messages that are received can trigger a registered function Broker disconnect for easily handling reconnects Networking for simple integration with any I/O MQTTv5 properties can be handled with a registered function

Supported build environments:

Mac/Linux/Unix with make files Visual Studio solution Arduino MinGW Cross-compile for any target

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

While you’re there, show us some love and give the wolfMQTT project a Star!

You can download the latest release here: https://www.wolfssl.com/download/ Or clone directly from our GitHub repository: https://github.com/wolfSSL/wolfMQTT