CURLOPT_DEBUGDATA

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DEBUGDATA, void *pointer);

Pass a pointer to whatever you want passed in to your CURLOPT_DEBUGFUNCTION(3) in the last void * argument. This pointer is not used by libcurl, it is only passed to the callback.

NULL

All

http://curl.haxx.se/libcurl/c/debug.html

Always

Returns CURLE_OK

CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),