Signal tags
Understand channel tags, direct messages, CID publishing, and retained messages.
Signaling types
Channel publishing, direct CID messaging, and CID publication in IOSignal 7.2.0.
Payload formats and JS–Arduino compatibility
Understand EMPTY, TEXT, BINARY, OBJECT, MJSON, and MBA payloads.
HOME CHANNEL
Understand IP-based implicit channels and their boundaries.
Authentication and encryption
Distinguish device credentials, connection encryption, and end-to-end data keys.
WebSocket, MQTT, Socket.IO, and IOSignal
Understand the different roles of transport and messaging protocols.