Provided by: libcurl4-doc_7.47.0-1ubuntu2.19_all 

NAME
CURLOPT_DEBUGDATA - custom pointer for debug callback
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DEBUGDATA, void *pointer);
DESCRIPTION
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.
DEFAULT
NULL
PROTOCOLS
All
EXAMPLE
http://curl.haxx.se/libcurl/c/debug.html
AVAILABILITY
Always
RETURN VALUE
Returns CURLE_OK
SEE ALSO
CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),
libcurl 7.37.0 17 Jun 2014 CURLOPT_DEBUGDATA(3)