curl-w32/docs/libcurl/opts/CURLINFO_PRIVATE.md

1.3 KiB

c SPDX-License-Identifier Title Section Source See-also
Copyright (C) Daniel Stenberg, <daniel.se>, et al. curl CURLINFO_PRIVATE 3 libcurl
CURLOPT_PRIVATE (3)
curl_easy_getinfo (3)
curl_easy_setopt (3)

NAME

CURLINFO_PRIVATE - get the private pointer

SYNOPSIS

#include <curl/curl.h>

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

DESCRIPTION

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 *'.

PROTOCOLS

All

EXAMPLE

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

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

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

    if(res)
      printf("error: %s\n", curl_easy_strerror(res));

    curl_easy_cleanup(curl);
  }
}

AVAILABILITY

Added in 7.10.3

RETURN VALUE

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