Using the WebSocket package

The /whisk.system/websocket package offers a convenient way post messages to a WebSocket.

The package includes the following action:

EntityTypeParametersDescription
/whisk.system/websocketpackageuriUtilities for communicating with WebSockets
/whisk.system/websocket/sendactionuri, payloadSend the payload to the WebSocket URI

If you plan to send many messages to the same WebSocket URI, creating a package binding with the uri value is suggested. With binding, you don't need to specify the value each time that you use the send action.

Sending a message to a WebSocket

The /whisk.system/websocket/send action will send a payload to a WebSocket URI. The parameters are as follows:

  • uri: The URI of the websocket server (e.g. ws://mywebsockethost:80)
  • payload: The message you wish to send to the WebSocket