iOS 9.3 : An SSL error has occurred and a secure connection to the server cannot be made

Question

I am getting following error with self signed certificate

Error Domain=NSURLErrorDomain Code=-1200 \"An SSL error has occurred and a secure connecti

Answer 1

I presume the server you are trying to connect has invalid certificates or doesn't match up with the iOS 9 standards for ECC, Ciphers etc.

• If you’re using high-level networking APIs—NSURLSession, NSURLConnection, or anything layered on top of those—you don’t have direct control over the cypher suites offered by the client. Those APIs choose a set of cypher suites using their own internal logic.

• If you’re using lower-level networking APIs—CFSocketStream, via its NSStream and CFStream APIs, and anything lower than that—you can explicitly choose the set of cypher suites you want to use. How you do this depends on the specific API.

The standard practice is:

1. create the stream pair

2. configure it for TLS

3. get the Secure Transport context using the kCFStreamPropertySSLContext property

4. configure specific properties in that context

5. open the streams

You can see an example of this in the TLSTool sample code. Specifically, look at the TLSToolServer class, where you can see exactly this sequence.

In a very short context, you want to configure the stream in such a way that it bypasses the security, however, in the case of Alamofire you can do this directly by:

func bypassAuthentication() {
        let manager = Alamofire.Manager.sharedInstance
        manager.delegate.sessionDidReceiveChallenge = { session, challenge in
            var disposition: NSURLSessionAuthChallengeDisposition = .PerformDefaultHandling
            var credential: NSURLCredential?
            if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust {
                disposition = NSURLSessionAuthChallengeDisposition.UseCredential
                credential = NSURLCredential(forTrust: challenge.protectionSpace.serverTrust!)
            } else {
                if challenge.previousFailureCount > 0 {
                    disposition = .CancelAuthenticationChallenge
                } else {
                    credential = manager.session.configuration.URLCredentialStorage?.defaultCredentialForProtectionSpace(challenge.protectionSpace)
                    if credential != nil {
                        disposition = .UseCredential
                    }
                }
            }
            return (disposition, credential)
        }
    }

let me know if that helps. Thank you!