Fixes handling of short reads/writes for Mac SSL

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 855 matching lines @@
             if (_status == HANDSHAKE) {
               throw new HandshakeException(
                   'Connection terminated during handshake');
             }
           }
           _closeHandler();
         }
         if (_status == CLOSED) return;
         if (_filterStatus.progress) {
           _filterPending = true;
+          if (_filterStatus.writeEncryptedNoLongerEmpty) _writeSocket();

[Ivan Posva, 2016/03/29 17:14:17]

{}s

[zra, 2016/03/29 17:29:20]

Done.

           if (_filterStatus.writePlaintextNoLongerFull) _sendWriteEvent();
           if (_filterStatus.readEncryptedNoLongerFull) _readSocket();
-          if (_filterStatus.writeEncryptedNoLongerEmpty) _writeSocket();
           if (_filterStatus.readPlaintextNoLongerEmpty) _scheduleReadEvent();
           if (_status == HANDSHAKE) _secureHandshake();
         }
         _tryFilter();
       }).catchError(_reportError);
     }
   }
 
   List<int> _readSocketOrBufferedData(int bytes) {
     if (_bufferedData != null) {
@@ skipping 345 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);
 }