Swift how to get response.statuscode in swiftui view

I am trying insert into db use post method in swift

and i can not get the response.statusCode of post method in swiftui view

how can i fix it

import SwiftUI

struct ContentView: View {
  @State var resp:Int  = 0
    var body: some View {
        VStack{
        Text("Hello, World!")
        Button(action: {
            self.resp = postAdd()
            print("view\(self.resp)")
        }) {
            Text(/*@START_MENU_TOKEN@*/"Button"/*@END_MENU_TOKEN@*/)
              
                
                .background(self.resp == 201 ? Color.green : Color.gray)
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
func postAdd() ->Int{
            let url = URL(string: "http://localhost:3000/user")
            var request = URLRequest(url: url!)
    var resp = 0
                       request.httpMethod = "POST"
                        let urlstr = "id=5&name=aaa"
    
            request.httpBody = urlstr.data(using: .utf8)!
            let session = URLSession.shared
            session.dataTask(with: request) { (data, response, error) in
                if error == nil, let data = data, let response = response as? HTTPURLResponse {
                                   print("Content-Type: \(response.allHeaderFields["Content-Type"] ?? "")")
                                      print("statusCode: \(response.statusCode)")
                    resp = response.statusCode
                    print(String(data: data, encoding: .utf8) ?? "")
                }
            }.resume()
    return resp
        }