IOS 10.3: HTTPS simulator localhost: SSL error

Question

This worked fine for iOS 10.2 and below, but after upgrading to 10.3, when the simulator tries to connect via HTTPS to a development server running on localhost, the Xcode console displays the following errors:

NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9802)
[] nw_coretls_callback_handshake_message_block_invoke_3 tls_handshake_continue: [-9807]

The printout errorreturned URLSessionDataTaskshows:

Error Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." UserInfo={NSURLErrorFailingURLPeerTrustErrorKey=<SecTrustRef: 0x600000527080>, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9802, NSErrorPeerCertificateChainKey=(
    "<cert(0x7ff3e1867200) s: localhost i: localhost>"
), NSUnderlyingError=0x60800024e880 {Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, kCFStreamPropertySSLPeerTrust=<SecTrustRef: 0x600000527080>, _kCFNetworkCFStreamSSLErrorOriginalValue=-9802, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9802, kCFStreamPropertySSLPeerCertificates=(
    "<cert(0x7ff3e1867200) s: localhost i: localhost>"
)}}, NSLocalizedDescription=An SSL error has occurred and a secure connection to the server cannot be made., NSErrorFailingURLKey=https://localhost:3000/v1/login, NSErrorFailingURLStringKey=https://localhost:3000/v1/login, NSErrorClientCertificateStateKey=0}

Link: Apple: Developer: Guides and Code Example: Technical Note TN2232: HTTPS Server Trust Assessment

---

To create a self-signed SSL certificate, I used the following commands:

openssl genrsa -aes256 -passout pass:x -out server.pass.key 2048
openssl rsa -passin pass:x -in server.pass.key -out server.key
rm server.pass.key
openssl req -new -sha256 -key server.key -out server.csr -subj /CN=localhost
openssl x509 -req -sha512 -days 365 -in server.csr -signkey server.key -out server.crt

Source: GitHub - seviu / iOS-SSL-localhost

Answer 1

SSL- ( ) iPhone Simulator "" > "" > " " > " " .

Answer 2

, didRecieveChallenge SSl

: didReceiveChallenge URLSession URLConnnection.

- (void)URLSession :( NSURLSession *)session didReceiveChallenge :( NSURLAuthenticationChallenge *)challenge completionHandler :( void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable credential))completionHandler {   NSURLSessionAuthChallengeDisposition lDisposition = NSURLSessionAuthChallengeUseCredential;
NSURLCredential *credential = [[NSURLCredential alloc] init];


if (challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust) {
    credential = [NSURLCredential credentialForTrust: challenge.protectionSpace.serverTrust];
    lDisposition = NSURLSessionAuthChallengeUseCredential;
}
completionHandler(lDisposition, credential);}