This FAQ will explain what the WebSockets Protocol is and the ways in which the BB-400 IO can communicate using this protocol.
What are WebSockets?
WebSockets is a type of API that instead of using a http-based protocol, uses a “socket” connection instead. Sockets can be thought of in a similar way to ports, they facilitate the transfer of data. WebSockets use this connection to allow constant communication between the server and the browser. The advantages of this are lower data overheads, as well as data being transferred over in real time.
BB-400 IO and WebSockets
The default port for WebSockets is 8989, as shown by the WebAdmin IO page: