Swift 3連接到具有XML無效證書的服務器

我在連接到服務器時遇到了一些問題。我只想發送用戶名和密碼，並從XML文件中獲取一些數據。Swift 3連接到具有XML無效證書的服務器

let loginString = String(format: "%@:%@", username, password) 
    let loginData = loginString.data(using: String.Encoding.utf8)! 
    let base64LoginString = loginData.base64EncodedString() 

    let baseUrl = "xxxxxx" 
    let request = NSMutableURLRequest(url: NSURL(string: baseUrl)! as URL) 
    request.httpMethod = "POST" 
    request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization") 
    let session = URLSession.shared 
    request.httpMethod = "GET" 

    var err: NSError? 

    let task = session.dataTask(with: request as URLRequest) { 
     (data, response, error) in 

     if data == nil { 
      print("dataTaskWithRequest error: \(error)") 
      return 
     } 

     let xml = SWXMLHash.parse(data!) 
     print(xml["mobile_devices"]["mobile_device"]["serial_number"].element?.text) 

     DispatchQueue.main.async(execute: { 
      // use main thread for UI updates 
     }) 

    } 
    task.resume()

當我運行它，我得到以下錯誤（S）：

nw_coretls_callback_handshake_message_block_invoke_3 tls_handshake_continue: [-9812] 2017-05-04 08:20:45.311 xxxx[23410:4428038] NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9813)

NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9813) dataTaskWithRequest error: Optional(Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be 「xxxxxxx」 which could put your confidential information at risk." UserInfo={NSURLErrorFailingURLPeerTrustErrorKey=, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9813, NSErrorPeerCertificateChainKey=("cert(0x7f88d8834000) s: xxxxxxx JSS Built-in Certificate Authority>",

我從來沒有真正做過與API和任何東西，所以我的學習，我去。以前，我不得不編輯plist文件以允許連接，並解決了我之前遇到的問題。我有這麼遠，但我不知道如何克服它。

我看到這一點：Connect to a Server with Invalid Certificate using NSURLSession (swift2,xcode7,ios9) 但它打破了我的代碼