NSURLErrorDomain Code=-1001 error when a http post request is sent

Question

I am using the following code to post an image to my server.

@IBAction func postButtonPressed(sender: UIButton) {
    let task = NSURLSession.sharedSession(         


        

Answer 1

In my case issue was in 3rd party library - FirebasePerformance. Bug report URL: https://github.com/firebase/firebase-ios-sdk/issues/486