CURLOPT_HSTSWRITEDATA(3)

NAME
CURLOPT_HSTSWRITEDATA - pointer passed to the HSTS write callback

SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HSTSWRITEDATA, void *pointer);

DESCRIPTION
Data pointer to pass to the HSTS write function. If you use the CURLOPT_HSTSWRITEFUNCTION(3) option, this is the pointer you get as input in the fourth argument to the callback. This option does not enable HSTS, you need to use CURLOPT_HSTS_CTRL(3) to do that.

DEFAULT
NULL

PROTOCOLS
This functionality affects http only

EXAMPLE
struct MyData {
  void *custom;
};
int main(void)
{
  CURL *curl = curl_easy_init();
  struct MyData this;
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
    /* pass pointer that gets passed in to the
       CURLOPT_HSTSWRITEFUNCTION callback */
    curl_easy_setopt(curl, CURLOPT_HSTSWRITEDATA, &this);
    curl_easy_perform(curl);
  }
}

AVAILABILITY
Added in curl 7.74.0

RETURN VALUE
This returns CURLE_OK.

SEE ALSO
CURLOPT_HSTS(3), CURLOPT_HSTSREADDATA(3), CURLOPT_HSTSREADFUNCTION(3), CURLOPT_HSTSWRITEFUNCTION(3)