Description
COS02:
MQTT Version 5.0
Candidate OASIS Standard 02
11 February 2019
https://docs.oasis-open.org/mqtt/mqtt/v5.0/cos02/mqtt-v5.0-cos02.docx
https://docs.oasis-open.org/mqtt/mqtt/v5.0/cos02/mqtt-v5.0-cos02.html
https://docs.oasis-open.org/mqtt/mqtt/v5.0/cos02/mqtt-v5.0-cos02.pdf