Laravel CRON or Event process respond to api request via long poll - how to re-vitalise the session

I have a poll route on an API on Laravel 5.7 server, where the api user can request any information since the last poll.

The easy part is to respond immediately to a valid request if there is new information return $this->prepareResult($newData);

If there is no new data I am storing a poll request in the database, and a cron utility can then check once a minute for all poll requests and respond to any polls where data has been updated. Alternatively I can create an event listener for data updates and fire off a response to the poll when the data is updated.

I'm stuck with how to restore each session to match the device waiting for the update. I can store or pass the session ID but how do I make sure the CRON task / event processor can respond to the correct IP address just as if it was to the original request. Can php even do this?

I am trying to avoid websockets as will have lots of devices but with limited updates / interactions.

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