Code snippet to demonstrate URLSessionDelegate

urlSessionDelegate

class MyViewController: UIViewController, URLSessionDelegate {   
  //
  // MARK: - Constants
  //
  
  let pinnedCertificates: [Data] = {
    let url = Bundle.main.url(forResource: "certificate_name", withExtension: "der")!
    let data = try! Data(contentsOf: url)
    return [data]
  }()
  
  // ..
  // ViewController class implementation
  // ..
  
  func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
    // Empty delegate
  }
}