MQTT

www.mqtt.org 

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. For example, it has been used in sensors communicating to a broker via satellite link, over occasional dial-up connections with healthcare providers, and in a range of home automation and small device scenarios. It is also ideal for mobile applications because of its small size, low power usage, minimised data packets, and efficient distribution of information to one or many receivers

MQTT

Server	QoS 0	QoS 1	QoS 2	auth	bridge	$SYS	SSL	dynamic topics	cluster	websockets	plugin system
mosquitto	✔	✔	✔	✔	✔	✔	✔	✔	✘	✔	✔
RSMB	✔	✔	✔	✔	✔	✔	✘	✔	✘	✘	?
WebSphere MQ	✔	✔	✔	✔	✔	✔	✔	✔	?	?	?
HiveMQ	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
Apache Apollo	✔	✔	✔	✔	✘	✘	✔	✔	?	✔	?
Apache ActiveMQ	✔	✔	✔	✔	✘	✘	✔	✔	✔	✔	✔
my-Channels Nirvana Messaging	✔	✔	✔	§	✘	✘	✔	✘	?	?	?
RabbitMQ	✔	✔	✘	✔	✘	✘	✔	✔	?	?	?
MQTT.js	✔	✔	✔	§	✘	✘	✔	✔	✘	✔	✘
moquette	✔	✔	✘	?	?	?	?	?	✘	✘	✘
mosca	✔	✔	✘	✔	?	?	?	?	✘	✔	✘
IBM MessageSight	✔	✔	✔	✔	✘	✔	✔	✔	§	✔	✘
2lemetry	✔	✔	✔	✔	✔	§	✔	✔	✔	✔	✘
GnatMQ	✔	✔	✔	✔	✘	✘	✘	✔	✘	✘	✘
JoramMQ	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
ThingMQ	✔	✔	✔	✔	✔	✘	✔	✔	✔	✔	✔
VerneMQ	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔

Key: ✔ supported ✘ not supported ? unknown § see limitations

참고사이트 : 

• http://www.joinc.co.kr/modules/moniwiki/wiki.php/man/12/MQTT/Tutorial 
• http://www.joinc.co.kr/modules/moniwiki/wiki.php/man/12/MQTT/MultiChat