static int ossl_get_proxy_index(void)
{
  static int proxy_index = -1;
  if(proxy_index < 0) {
    proxy_index = SSL_get_ex_new_index(0, NULL, NULL, NULL, NULL);
  }
  return proxy_index;
}
static int ossl_get_proxy_index(void)
{
  static int proxy_index = -1;
  if(proxy_index < 0) {
    proxy_index = SSL_get_ex_new_index(0, NULL, NULL, NULL, NULL);
  }
  return proxy_index;
}