CURLOPT_PROGRESSDATA(3) Library Functions Manual CURLOPT_PROGRESSDATA(3)
NAME
CURLOPT_PROGRESSDATA - pointer passed to the progress callback
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROGRESSDATA, void *pointer);
DESCRIPTION
Pass a pointer that is untouched by libcurl and passed as the first
argument in the progress callback set with CURLOPT_PROGRESSFUNCTION(3).
DEFAULT
NULL
PROTOCOLS
This functionality affects all supported protocols
EXAMPLE
struct progress {
char *private;
size_t size;
};
static size_t progress_callback(void *clientp,
double dltotal,
double dlnow,
double ultotal,
double ulnow)
{
struct progress *memory = clientp;
printf("private: %p\n", memory->private);
/* use the values */
return 0; /* all is good */
}
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
struct progress data;
/* pass struct to callback */
curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &data);
curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
curl_easy_perform(curl);
}
}
AVAILABILITY
Added in curl 7.1
RETURN VALUE
Returns CURLE_OK
SEE ALSO
CURLOPT_PROGRESSFUNCTION(3), CURLOPT_XFERINFOFUNCTION(3)
libcurl 2024-08-05 CURLOPT_PROGRESSDATA(3)
curl 8.9.1 - Generated Wed Aug 7 08:54:37 CDT 2024