CURLOPT_DEBUGDATA - pointer passed to the debug callback
#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.
int main(void)
{
CURL *curl;
CURLcode res;
struct data my_tracedata;
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &my_tracedata);
/* the DEBUGFUNCTION has no effect until we enable VERBOSE */
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
res = curl_easy_perform(curl);
/* always cleanup */
curl_easy_cleanup(curl);
}
return 0;
}
CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),