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For Dashboard Designers Reference ServerSentEvents

Friday, August 8, 2025 7:56 AM

ServerSentEvents

Label: :IA_Function
Property: type: ServerSentEvents
Inherits from: Function

The ServerSentEvents Function is listening to a stream of data from a given server. This Function can listen on a WebSocket or HTTP connection.

ServerSentEvents is using the EventSource browser API for HTTP connections and WebSocket API for WebSocket connections.

Parameters

Key Description Default value Possible values
url server address to listen '' string
withCredentials property is a boolean value that indicates whether or not cross-site Access-Control requests should be made using credentials. true boolean

Outgoing triggers

Type: messageReceived

Occurrence: when data was sent succesfully

Key Description Possible values
data Data sent by the server string / object

Example configuration

(:IA_Function{
  "type": "ServerSentEvents",
  "url": "https://graphileon.com/sse.php"
}) - [:TRIGGER{
  "type": "messageReceived",
  "#_update.add.data": "evaluate(fromJSON((%).data))"
}] -> (:IA_Function{
  "type": "TableView",
  "$options.pagination": "true",
  "$options.paginationAutoPageSize": "true",
  "_instance": "sseaggridview"
})