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).