Develop M2M IoT Devices

Developing M2M Internet-of-Things Devices on Windows Embedded Platforms

3.1: MQTT Introduction
Created by ppatierno on 11/11/2013 4:00:04 PM

MQTT, short for Message Queue Telemetry Transport, is a light weight messaging protocol that ena... Read More..

3.2: Architecture: Clients and Broker
Created by ppatierno on 11/11/2013 5:50:00 PM

In general, a network based on MQTT protocol consists of many clients (up to 10k devices... Read More..

3.3: Message: Publish, Subscribe and Topic
Created by ppatierno on 11/11/2013 5:56:09 PM

MQTT protocol is based on “Publish/Subscribe” pattern and “topic” concept. A client can be a publ... Read More..

3.4: Topic Format
Created by ppatierno on 11/11/2013 5:59:03 PM

The topic is represented by a string and it has a hierarchical structure where each layer (subto... Read More..

3.5: Quality of Service
Created by ppatierno on 11/11/2013 6:02:32 PM

MQTT is based on TCP/IP which guarantees data delivery but messages can be lost if a TCP connec... Read More..

3.6: Authentication and Security
Created by ppatierno on 11/11/2013 6:04:41 PM

MQTT protocol provides two simple mechanisms for client authentication: client ID and user. Wh... Read More..

3.7 Message Flow
Created by ppatierno on 11/11/2013 6:37:28 PM

For better understanding of MQTT protocol, it can be useful to study the message flow between cl... Read More..