Libcurl - cookie authentication

我想在Libcurl使用cookie时避免使用文件系统…这可能吗?似乎文档和示例都需要使用从文件中写入和读取cookie…也许我错了。

到目前为止，我做的是这样的:

curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POST, 1);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postfield);
curl_easy_setopt(curl, CURL_HTTPAUTH, CURLAUTH_BASIC);
curl_easy_setopt(curl, CURLOPT_USERPWD, userpass);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writer);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
//writes the cookie to file sent from server
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, COOKIE_FILENAME);
curl_easy_perform(curl);
curl_easy_cleanup(curl);