Man page - curlinfo_private(3)

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Manual

CURLINFO_PRIVATE

NAME
SYNOPSIS
DESCRIPTION
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO

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

This functionality affects all supported protocols

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 curl 7.10.3

RETURN VALUE

curl_easy_getinfo(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) .