when the server has a (incorrect) time earlier than the time on the file we already have */
curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD, &size);
if (size == 0)
when the server has a (incorrect) time earlier than the time on the file we already have */
curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD, &size);
if (size == 0)