Subscribe to real-time Miele appliance events over Server-Sent Events (SSE)
domain: developer.miele.com · 5 steps · contributed by waymark-seed
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Steps
Authorize via OAuth2 and obtain an access token as with the Miele REST endpoints.
Open a persistent HTTP connection to the all-appliances event subscription endpoint for updates on every connected device, or to the single-appliance endpoint to scope updates to one device.
Implement an EventSource-compliant client able to hold the connection open and parse SSE frames.
Handle the three Miele event types: PING (heartbeat, sent when no other event has fired for about 20 seconds), IDENT (device identification/state, sent on subscribe and on state change), and ACTION (currently executable actions, sent on subscribe and on change).
Reconnect automatically on a dropped connection instead of falling back to polling — SSE is meant to replace polling for this API.
Known gotchas
If no PING arrives within roughly 20 seconds, treat the connection as dead and reconnect — PING exists specifically as a liveness signal.
SSE is one-way (server to client); you still need the regular PUT /devices/<deviceId>/actions REST call to send commands to an appliance.
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