void lftp_ssl_gnutls::shutdown()
{
   if(handshake_done)
      gnutls_bye(session,GNUTLS_SHUT_RDWR);  // FIXME - E_AGAIN
}
void lftp_ssl_gnutls::shutdown()
{
   if(handshake_done)
      gnutls_bye(session,GNUTLS_SHUT_RDWR);   
}