In my basement I have a couple of raspberry PIs that are collecting sensor data. They cannot send the data to any server because there is no signal in the basement.
So my idea was to develop an app that would host a web server so that I can take my phone, go into the basement and enable the hotspot so that the raspberrys can connect to my phones Wifi and send their sensor data via API calls to the web server that is running on the phone.
I have read about Vapor but somehow that feels like overkill for this problem.
Do you guys have any recommendations how to solve this problem or better ideas than running a web server on the iPhone (and no, extending the wifi signal into the basement is not an option here)?