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 will be 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

       The default value of this parameter is NULL.

PROTOCOLS

       All

EXAMPLE

        struct progress {
          char *private;
          size_t size;
        };

        static size_t progress_callback(void *clientp,
                                        curl_off_t dltotal,
                                        curl_off_t dlnow,
                                        curl_off_t ultotal,
                                        curl_off_t ulnow)
        {
          struct memory *progress = (struct progress *)clientp;

          /* use the values */

          return 0; /* all is good */
        }

        struct progress data;

        /* pass struct to callback  */
        curl_easy_setopt(curl_handle, CURLOPT_XFERINFODATA, &data);

        curl_easy_setopt(curl_handle, CURLOPT_XFERINFOFUNCTION, progress_callback);

AVAILABILITY

       Added in 7.32.0

RETURN VALUE

       Returns CURLE_OK

SEE ALSO

       CURLOPT_XFERINFOFUNCTION(3), CURLOPT_VERBOSE(3),