iOS app acting as MJPEG client in the background

We are developing a SwiftUI iOS app which behaves as a client to a MJPEG server on a local network. This means that our app should read images sent from a special hardware we are developing using HTTP protocol. The testing is working fine, but our concern is that when the app goes to the background or the phone is locked, the HTTP connection gets closed after one minute. However, we need to have this HTTP connection alive all the time because we are developing a safety monitoring app that should continue its monitoring state even when the phone is locked. We are constantly running object detection AI algorithm on the transferred images from the hardware. Is there a solution to our concern. Could we have example code to a solution?