Use Socket::connect for SecureSocket as well.

sdk/lib/io/secure_socket.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart.io;
 
 /**
  * A high-level class for communicating securely over a TCP socket, using
  * TLS and SSL. The [SecureSocket] exposes both a [Stream] and an
  * [IOSink] interface, making it ideal for using together with
@@ skipping 228 matching lines @@
    * decide (or let the user decide) whether to accept
    * the connection or not.  The handler should return true
    * to continue the [RawSecureSocket] connection.
    */
   static Future<RawSecureSocket> connect(
       host,
       int port,
       {bool sendClientCertificate: false,
        String certificateName,
        bool onBadCertificate(X509Certificate certificate)}) {
-    return  _RawSecureSocket.connect(
+    _RawSecureSocket._verifyFields(
         host,
         port,
         certificateName,
-        is_server: false,
-        sendClientCertificate: sendClientCertificate,
-        onBadCertificate: onBadCertificate);
+        false,
+        false,
+        false,
+        sendClientCertificate,
+        onBadCertificate);
+    return RawSocket.connect(host, port)
+        .then((socket) {
+          return secure(socket,
+                        host: host,
+                        sendClientCertificate: sendClientCertificate,
+                        certificateName: certificateName,
+                        onBadCertificate: onBadCertificate);
+        });
   }
 
   /**
    * Takes an already connected [socket] and starts client side TLS
    * handshake to make the communication secure. When the returned
    * future completes the [RawSecureSocket] has completed the TLS
    * handshake. Using this function requires that the other end of the
    * connection is prepared for TLS handshake.
    *
    * If the [socket] already has a subscription, pass the existing
@@ skipping 1002 matching lines @@
 /**
  * An exception that happens in the handshake phase of establishing
  * a secure network connection, when looking up or verifying a
  * certificate.
  */
 class CertificateException extends TlsException {
   const CertificateException([String message = "",
                             OSError osError = null])
      : super._("CertificateException", message, osError);
 }