Why do I see this error: HTTP Traffic: HTTP traffic tracing is not available prior to iOS 15, macOS 12 Monterey, tvOS 15, or watchOS 8.

Hmmm, that’s weird. I suspect that Instruments is having some of problem working with the device and that’s getting incorrectly surfaced as this error.

FWIW, I tried this here in my office and it worked for me:

1. Using Xcode 16.1, I created a new test project and wired up this code to a button:

   print("will start task")
   let url = URL(string: "https://example.com")!
   let request = URLRequest(url: url, cachePolicy: .reloadIgnoringLocalCacheData, timeoutInterval: 60.0)
   URLSession.shared.dataTask(with: request) { (data, response, error) in
       if let error = error as NSError? {
           print("task did fail, error: \(error.domain) / \(error.code)")
           return
       }
       let response = response as! HTTPURLResponse
       let data = data!
       print("task finished, status: \(response.statusCode), bytes: \(data.count)")
   }.resume()
   print("did start task")
   

2. I ran it on an iOS 18.1 test device, just to make sure it works.

3. I then chose Product > Profile.

4. In Instruments, I selected the Network template.

5. I hit record.

6. And then in the app I tapped my test button a few times.

7. Back in Instruments, I saw the network requests.

I’m running on macOS 14.7.1, not 15.1, but that shouldn’t make a difference.

If you run through the steps above, do you still see the error?

If you restart your Mac and your iOS device, does that help?

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Turns out a restart of my Mac fixed it. Thanks!