How to send a response to the client after completing a Celery task?

Question

Flask

There is a backend with Flask and Celery. When an http request is made, a task is launched in the route handler. How to return a response to the client upon completion of the task? After all, if you just check the state immediately, it will be 'PENDING', not 'SUCCESS'. And if you check the state in an eternal loop, then the asynchrony is lost, or not?

Answer 1

put something asynchronous next to it and connect it via a websocket. Or ask every 1/5/10 sec. at the flask