Commands - METAR.ws Docs

The client sends exactly two kinds of command, selected by the top-level action field.

{"action": "subscribe", "channels": ["metar.obs.eglc", "metar.obs.rksi"]}

The server validates each channel in the batch independently. If one channel name is invalid, the rest of the batch still subscribes successfully, and the bad channel gets its own error frame.

{"type": "subscribed", "channels": ["metar.obs.eglc", "metar.obs.rksi"]}

Unsubscribe

{"action": "unsubscribe", "channels": ["metar.obs.eglc"]}

{"type": "unsubscribed", "channels": ["metar.obs.eglc"]}

Unknown channels passed to unsubscribe are silently ignored rather than producing an error.

Next: Publication Messages

See the shape of the messages the server pushes to you.