[Twisted-Python] How can I disconnect ssl connection from the client side?

Hello, I'm writing a smtp-client application with twisted.mail. Testing the application, I noticed that timeout doesn't work in some case if client started starttls session. If smtp-server stops responding after DATA command was sent from client, calling transport.loseConnection() doesn't close connection. I found ticket # 2827 reports connector.disconnect() doesn't work for ssl connection if the server doesn't send any data. Is there a workaround to disconnect ssl connection? Regards,