wolfSSL has released version 0.2 of the wolfMQTT client library. This addition to the wolfSSL product portfolio provides a Pub/Sub client for use in M2M and IoT. The wolfMQTT client library is written in C and was built from the ground up to be multi-platform, space conscience and extensible.Features- Built from scratch by wolfSSL engineers- Based on MQTT v3.1.1 specification- Supports all client side packet types and protocol options- QoS Levels 0-2 (guarenteed delivery)- Supports plain TCP or TLS (via the wolfSSL library)- Single threaded model and single message callback- Written in Native C89 with portability/compatibility in mind- Space conscience design (Compiled size is about 3.6KB)- User manual with build instructions, example overview and API documentation- Example MQTT client implementations- Network interface is abstracted via callbacks for extensibility- Packet parsing encoding/decoding structured for custom use- Minimal external dependencies (strlen, memcpy, memset)- Detailed error checking/handling- Doxygen style inline documentation- Less than 1200 lines of well structured C code- Tested on multiple variants of MQTT broker servers, QoS levels 0-2 with/without TLS.- Tested on Linux, Mac OS X and Freescale Kinetis K64.- Inherits wolfSSL library features such as lightweight TLS using ChaCha20/Poly1305 AEAD, small size and portability.- Open source (GPLv2)wolfMQTT Product PagewolfMQTT User ManualDownload wolfMQTTFor questions or additional information please contact wolfSSL at facts@wolfssl.com.