CURLOPT_HSTSWRITEDATA(3)   curl_easy_setopt options   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);

EXPERIMENTAL
       Warning: this feature is early code and is marked as experimental. It
       can only be enabled by explicitly telling configure with --enable-hsts.
       You are advised to not ship this in production before the experimental
       label is removed.

DESCRIPTION
       Data pointer to pass to the HSTS write function. If you use the
       _HSTSWRITEFUNCTION&section=3">CURLOPT_HSTSWRITEFUNCTION(3) option, this is the pointer you'll get as
       input in the 4th argument to the callback.

       This option doesn't enable HSTS, you need to use _HSTS_CTRL&section=3">CURLOPT_HSTS_CTRL(3)
       to do that.

DEFAULT
       NULL

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

EXAMPLE
       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 will return CURLE_OK.

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

libcurl 7.77.0                 November 4, 2020       CURLOPT_HSTSWRITEDATA(3)