requiresDNSSECValidation sample over request

Hi community:

I'm trying to discover how the dnssec api works, but I cannot get a sample that works with it.

Maybe I'm wrong with the requirements; if it is please, clarify it to me.

So what I understood.

All DNS zones (which respond to TLS listed here https://manage.whois.com/kb/answer/2998) have a way to say, hey I'm who I am.

So without any extra configuration, we can use the new API.

Is that right?

So the code that I did, see the next code

let urlSession = URLSession.init(configuration: .ephemeral)
if #available(iOS 16.0, *) {
   urlSession.configuration.requiresDNSSECValidation = true
}

var request = URLRequest(url: URL(string: "https://www.apple.com")!)

if #available(iOS 16.1, *) {
   request.requiresDNSSECValidation = true
}

 cancellable = urlSession
            .dataTaskPublisher(for: request)
            .retryWithDelay(retries: 2, delay: 2, scheduler: DispatchQueue.global(qos: .background))
            .sink(receiveCompletion: { result in
                if case let .failure(error) = result {
                    print("Error \(error)")
                }

            }, receiveValue: { (data: Data, response: URLResponse) in
                print("It Works")

Result:

Task finished with error [-1001] Error Domain=NSURLErrorDomain Code=-1001, UserInfo={_kCFStreamErrorCodeKey=-2102, NSUnderlyingError=0x600003d86130 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_kCFStreamErrorCodeKey=-2102, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <040AB9E7-EFCB-4072-8357-E0149769BB9D>.<2>, _NSURLErrorRelatedURLSessionTaskErrorKey=(```
    "LocalDataTask <040AB9E7-EFCB-4072-8357-E0149769BB9D>.<2>"
),  NSErrorFailingURLStringKey=https://apple.com/, NSErrorFailingURLKey=https://apple.com/, _kCFStreamErrorDomainKey=4}

The DNS I'm using is 8.8.8.8. Do you know any other DNS server that supports DNSSEC?

If I remove requiresDNSSECValidation from request it works.

Also, it's curious that even failing the receiveCompletion is never called. But if I use the dataTask` with completion it's called with the error.

Thanks for the clarifications.