Manpages - CURLINFO_PRIVATE.3

CURLINFO_PRIVATE - get the private pointer

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRIVATE, char **private);

Pass a pointer to a char pointer to receive the pointer to the private data associated with the curl handle (set with the CURLOPT_PRIVATE(3)). Please note that for internal reasons, the value is returned as a char pointer, although effectively being a ’void *’.

All

  CURL *curl = curl_easy_init();
  if(curl) {
    void *pointer = 0x2345454;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");

    /* set the private pointer */
    curl_easy_setopt(curl, CURLOPT_PRIVATE, pointer);
    ret = curl_easy_perform(curl);

    /* extract the private pointer again */
    ret = curl_easy_getinfo(curl, CURLINFO_PRIVATE, &pointer);

    curl_easy_cleanup(curl);
  }

Added in 7.10.3

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

*curl_easy_getinfo*(3), *curl_easy_setopt*(3), *CURLOPT_PRIVATE*(3),