#ifdef HTTP_HAVE_PERSISTENT_HANDLES
# define HTTP_CURL_MULTI_CTOR(ch) (SUCCESS == http_persistent_handle_acquire("http_request_pool", &(ch)))
# define HTTP_CURL_MULTI_DTOR(chp) http_persistent_handle_release("http_request_pool", (chp))
#ifdef HTTP_HAVE_PERSISTENT_HANDLES
# define HTTP_CURL_MULTI_CTOR(ch) (SUCCESS == http_persistent_handle_acquire("http_request_pool", &(ch)))
# define HTTP_CURL_MULTI_DTOR(chp) http_persistent_handle_release("http_request_pool", (chp))