Client longpolling

Tags: iot box compatible virtual iot compatible

In order for Odoo to interact with an IoT. We rely heavily on network requests.

Most of the time, it will be with HTTPS request from the client browser to the IoT using the IoT LAN IP address.

participant "Client Browser" as Client Client -> IoT: IoT request IoT -> Device: Instructions Device -> IoT: Result IoT -> Client: Result

Example: Printing a receipt through the IoT

actor Cashier participant "Client Browser" as Client Cashier -> Client: print receipt Client -> IoT: picture of receipt note over IoT: convert picture to Epson ESC/PoS format IoT -> "Epson Printer": ESC/PoS command "Epson Printer" -> IoT: OK IoT -> Client: OK Client -> Cashier: confirmation pop-up

Note

This interation does not use Odoo server. It was originally thought to be used without the need for an internet connection (as the PoS was meant to work offline).

Starting Odoo 17, the IoT team is slowly moving toward websocket usage rather than HTTPS.

See also

Websockets