Data Feeds

Bring live data in over an HTTP poll, a WebSocket or a webhook push — JSON, XML or text — and fold it into the store.

Hold a live connection open.

FieldMeaning
URLws:// or wss://; secrets may be interpolated.
HeadersSent with the connection handshake (auth tokens, API keys).
SubscribeText sent after every connect and reconnect — a subscribe or auth frame.
ReconnectWait before reconnecting after a drop; doubles on each failed attempt, up to 30 s.
Only when … = …For a socket that multiplexes message types: only messages whose value at the path equals the text are mapped.

Listen connects with the feed's own settings, sends the subscribe text and shows the first message that passes the filter. A message only needs to carry the fields it changes: the others hold.

A WebSocket feed decoding XML, with a match filter and a subscribe frame.
A WebSocket feed decoding XML, with a match filter and a subscribe frame.