NAME

       CURLOPT_PRIVATE - store a private pointer

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PRIVATE, void *pointer);

DESCRIPTION

       Pass a void * as parameter, pointing to data that should be associated with this curl handle. The pointer
       can  subsequently  be  retrieved  using curl_easy_getinfo(3) with the CURLINFO_PRIVATE(3) option. libcurl
       itself never does anything with this data.

DEFAULT

       NULL

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       struct private {
         void *custom;
       };

       int main(void)
       {
         CURL *curl = curl_easy_init();
         struct private secrets;
         if(curl) {
           struct private *extracted;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

           /* store a pointer to our private struct */
           curl_easy_setopt(curl, CURLOPT_PRIVATE, &secrets);

           curl_easy_perform(curl);

           /* we can extract the private pointer again too */
           curl_easy_getinfo(curl, CURLINFO_PRIVATE, &extracted);
         }
       }

AVAILABILITY

       Added in curl 7.10.3

RETURN VALUE

       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

SEE ALSO

       CURLINFO_PRIVATE(3), CURLOPT_STDERR(3), CURLOPT_VERBOSE(3)

libcurl                                            2025-03-05                                 CURLOPT_PRIVATE(3)