C - libcurl - How to get dltotal without using the CURLOPT_XFERINFOFUNCTION -

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i using libcurl multi interface , need know how data being sent each request. rather not use curlopt_xferinfofunction because gets called lot , need know dltotal while in curlopt_writefunction callback. want clean existing easy handle , malloc'd data while still in write callback once data has been received. there function can call return total amount of data being sent particular easy handle?

i tried using curl_easy_getinfo() curlinfo_size_download , returned 0. tried curlinfo_content_length_download returned 0. calling within curlopt_writefunction callback.

the reason zeroes calls because size isn't known before-hand.

but let me alert "i want clean existing easy handle , malloc'd data while still in write callback" sounds disaster waiting happen. should not cleanup handle within callback.


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