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 feature is only used for HTTP(S) transfer.

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 7.74.0

RETURN VALUE

This returns CURLE_OK.

SEE ALSO

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