CURLOPT_XFERINFODATA explained
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.
This is an alias for CURLOPT_PROGRESSDATA.
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),
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