Manpages - CURLOPT_HSTSWRITEDATA.3

CURLOPT_HSTSWRITEDATA - pointer passed to the HSTS write callback

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HSTSWRITEDATA, void *pointer);

Data pointer to pass to the HSTS write function. If you use the CURLOPT_HSTSWRITEFUNCTION(3) option, this is the pointer you will get as input in the 4th argument to the callback.

This option does not enable HSTS, you need to use CURLOPT_HSTS_CTRL(3) to do that.

NULL

This feature is only used for HTTP(S) transfer.

  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);
  }

Added in 7.74.0

This will return CURLE_OK.

*CURLOPT_HSTSWRITEFUNCTION*(3), *CURLOPT_HSTSREADDATA*(3), *CURLOPT_HSTSREADFUNCTION*(3),