I work for IBM, on MQTT and the Internet of Things. I'm a project lead for Eclipse Paho. I have a blog.

Ian’s public repositories

Sample MQTT program - simple send and receive
Better timing
MQTTPacket fixes
Low level MQTTSN packet library, part of the Eclipse Paho project: http://eclipse.org/paho
Add authorization check and messages
Sample MQTT-SN program
High level MQTT-SN C++ library
IoT Starter Kit Code