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RYWB116 MQTT Client Application User Guide
Copyright © 2019
, REYAX TECHNOLOGY CO., LTD.
PROTOCOL OVERVIEW
MQTT is a publish-subscribe based "light weight" messaging protocol for use on top of the
TCP/IP protocol.
The MQTT connection itself is always between one client and the broker, no client is connected to
another client directly.
MQTT CLIENT
A MQTT client is any device from a micro controller up to a full fledged server, that has a MQTT
library running and is connecting to an MQTT broker over any kind of network.
MQTT Clients can share the information on a particular topic using MQTT protocol.
MQTT clients connect to the MQTT broker using TCP connection and can subscribe and
publish on any desired topic.
The other clients which are subscribed for that topic will receive the published messages.
