NAME

CURLOPT_XFERINFODATA - pointer passed to the progress callback

SYNOPSIS

#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_XFERINFODATA, void *pointer);

DESCRIPTION

Pass a pointer that is untouched by libcurl and passed as the first argument in the progress callback set with CURLOPT_XFERINFOFUNCTION(3). This is an alias for CURLOPT_PROGRESSDATA(3).

DEFAULT

NULL

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE

struct progress {
char *private;
size_t size;
};
static size_t progress_cb(void *clientp,
curl_off_t dltotal,
curl_off_t dlnow,
curl_off_t ultotal,
curl_off_t ulnow)
{
struct progress *memory = clientp;
printf("private ptr: %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_XFERINFODATA, &data);
curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, progress_cb);
}
}

AVAILABILITY

Added in curl 7.32.0

RETURN VALUE

Returns CURLE_OK

SEE ALSO

CURLOPT_NOPROGRESS(3), CURLOPT_VERBOSE(3), CURLOPT_XFERINFOFUNCTION(3)