MQTT

MQTT

MQTT is a light-weight protocol used for Machine to Machine (M2M) communication. MQTT used a publish/subscribe message forwarding model built on top of TCP/IP protocol. MQTT Homepage

MQTT is a machine-to-machine (M2M)/"Internet of Things" connectivity protocol. It was designed as an extremely lightweight publish/subscribe messaging transport. It is useful for connections with remote locations where a small code footprint is required and/or network bandwidth is at a premium.

• MQTT Protocol Specification

• HiveMQ MQTT Essentials: Part 1 – Introducing MQTT

• HiveMQ MQTT Essentials Wrap-Up

• HiveMQ MQTT Essentials Part 6: Quality of Service 0, 1 & 2

Core Messages

• Connect

• Disconnect

• Publish

• Subscribe

• Unsubscribe

Quality of Services

• 0, 1, 2

Server Implementations

• IBM MQ

• IBM Microbroker

• RSMB

• Mosquitto

• MQTT.js

• Apache ActiveMQ

• RabbitMQ

• Adafruit MQTT API
• Microsoft Azure

Clients

• C/C++/C#

• Java

• Perl

• Python

• PHP

• Rex

• Ruby

• Arduino

Mosquitto

Mosquitto is an open source (BSD licensed) message broker that implements the MQ Telemetry Transport protocol versions 3.1 and 3.1.1. MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model.

MQTT (a.k.a. mosquitto) is perfect for mobile and embedded devices because of its lightweight (in processing, memory management and bandwidth) messaging protocol.

For this protocol, notice that it lacks of encryption in its base, otherwise it would add an important overhead to the connection. Security at the application level requires a lot of work.

Mosquitto Homepage