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CURLOPT_PROGRESSDATA(3) curl_easy_setopt options CURLOPT_PROGRESSDATA(3)

CURLOPT_PROGRESSDATA - pointer passed to the progress callback

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

Pass a pointer that will be untouched by libcurl and passed as the first argument in the progress callback set with CURLOPT_PROGRESSFUNCTION(3).

The default value of this parameter is NULL.

All

 struct progress {
   char *private;
   size_t size;
 };
 static size_t progress_callback(void *clientp,
                                 double dltotal,
                                 double dlnow,
                                 double ultotal,
                                 double ulnow)
 {
   struct memory *progress = (struct progress *)userp;
   /* use the values */
   return 0; /* all is good */
 }
 struct progress data;
 /* pass struct to callback  */
 curl_easy_setopt(curl_handle, CURLOPT_PROGRESSDATA, &data);
 curl_easy_setopt(curl_handle, CURLOPT_PROGRESSFUNCTION, progress_callback);

Always

Returns CURLE_OK

CURLOPT_PROGRESSFUNCTION(3), CURLOPT_XFERINFOFUNCTION(3),
November 26, 2021 libcurl 7.83.1

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