iOS app hosting HTTP Server - Making it public

Question

I would like my iOS app to host a small HTTP server, such that other app users can download files from the host.

I've tried using both Telegraph and Swifter. I can get the server to work on localhost but I can't figure out how to

1. Get the device's IP where the server is hosted
2. Configure it to host publicly at this IP

Telegram Code

let server = Server()
try! server.start(port: 9000)
    
let demoBundleURL = Bundle.main.url(forResource: "Demo", withExtension: nil)!
server.serveDirectory(demoBundleURL, "/demo")
    
server.route(.GET, "status") { (.ok, "Server is running") }

SWIFTER CODE

let server = HttpServer()
server["/"] = scopes {
  html {
    body {
      center {
        img { src = "https://swift.org/assets/images/swift.svg" }
      }
    }
  }
}
server["/files/:path"] = directoryBrowser("/")

let semaphore = DispatchSemaphore(value: 0)
do {
  try server.start(9080, forceIPv4: true)
  print("Server has started ( port = \(try server.port()) ). Try to connect now...")
  semaphore.wait()
} catch {
  print("Server start error: \(error)")
  semaphore.signal()
}