Cloud and LAN-Connected Devices

Cloud and LAN connected devices are devices that use either a 3rd party service, like the Ecobee thermostat, or communicate over the LAN (local area network) like the Sonos system. These devices require a unique implementation of their device handlers. Cloud and LAN connected devices use a service manager SmartApp along with a device handler for authentication, maintaining connections, and device communications. This guide will walk you through service manager and device handler creation for both of these scenarios.

Table of Contents:

• Service Manager Design Pattern
  • Basic Overview
  • Cloud-Connected Devices
  • LAN-Connected Devices
• Building Cloud-Connected Device Types
  • Division of Labor
    • Service-Manager Responsibilities
    • Device Handler Responsibilities
    • How It All Works
  • Building the Service Manager
    • Authentication using OAuth
    • Discovery
    • Handling Adds, Changes, Deletes
  • Building the Device Handler
    • The Parse Method
    • Sending Commands to the Third-Party Cloud
    • Receiving Events from the Third-Party Cloud
    • Generating Events at the Request of the Service Manager
• Building LAN-Connected Device Types
  • Division of Labor
    • Service-Manager Responsibilities
    • Device Handler Responsibilities
    • How It All Works
  • Building the Service Manager
    • Discovery
    • Handling Updates (Adds/Changes/Deletes)
    • Creating Child Devices
  • Building the Device Type
    • Making Outbound HTTP Calls with HubAction
    • Overview
    • Creating a HubAction Object
    • Parsing the Response
    • Getting the Addresses
    • REST Requests
    • UPnP/SOAP Requests
    • Subscribing to Device Events
    • References and Resources