示例代码swift2与tls连接并使用certficate发送

Question

我尝试使用TLS连接，但我不知道我的代码中有什么问题（swift 2）应该发送什么样的certyficate格式？我怎么修这个代码？或编写新的示例代码以便将来使用？

 class Sock: NSObject {
       var socket: GCDAsyncSocket

          override init()
          {
             self.socket = GCDAsyncSocket()
             super.init()
          }

        func connect()  {
            do
            {
                 self.socket = GCDAsyncSocket(delegate: self, delegateQueue:dispatch_get_main_queue())
                 print("try connect")
                 try socket.connectToHost("10.1.1.1", onPort: 5678)
                 while !socket.isConnected
                 {
                   print("polaczono dalej " + String(self.socket.isConnected))

                 }
             print("connect is " + String(self.socket.isConnected))

                         }
            catch let err as NSError
            {
             print("Error " + String(err))
            }
        }

       //override
        func socket(sock: GCDAsyncSocket!, didConnectToHost host: String!, port: UInt16)
        {
          do {
            //read from file
            let myFileURL = NSBundle.mainBundle().URLForResource("ca", withExtension: "der")!
            let certificateCa = try! String(contentsOfURL: myFileURL, encoding: NSISOLatin1StringEncoding)

            //decioding certyficate
            print("client: " + functions.getCertificate().fromBase64())
            print("ca: " + certificateCa)
            let certyfikat: CFArray = [certificateCa, functions.getCertificate().fromBase64() ] //cert.stringToNsData(),

            self.socket.synchronouslySetDelegate(self)

//在这个地方我想保持连接但是在startTLS连接之后是折扣                 self.socket.startTLS（[                     GCDAsyncSocketSSLProtocolVersionMin：NSNumber（int：SSLProtocol.TLSProtocol12.rawValue），                     GCDAsyncSocketSSLCipherSuites：acceptableCipherSuites，                     GCDAsyncSocketManuallyEvaluateTrust：false，                     kCFStreamPropertySSLPeerTrust：＆＃34; X509＆＃34;，                     kCFURLNameKey：＆＃34; Proget Software＆＃34;，                     kCFStreamSSLCertificates：certyfikat，

            ])

            print("Did conect is still run TLS: " + String(socket.isConnected))

            let request:String = "test test test"
            let data:NSData = request.dataUsingEncoding(NSUTF8StringEncoding)!
            print("Message with is sending: ")
            print(data)
            self.socket.writeData(data, withTimeout: -1.0, tag: 0)
          }
          catch let err as NSError
          {
             print("err socket")
             print(String(err))
          }
       }