NAME

       CURLOPT_AUTOREFERER - automatically update the referer header

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_AUTOREFERER, long autorefer);

DESCRIPTION

       Pass  a  long  parameter set to 1 to enable this. When enabled, libcurl will automatically
       set the Referer: header field in HTTP  requests  to  the  full  URL  where  it  follows  a
       Location: redirect.

       The  automatic referer is set to the full previous URL even when redirects are done cross-
       origin or following redirects to insecure protocols. This is considered  a  minor  privacy
       leak by some.

DEFAULT

       0, disabled

PROTOCOLS

       HTTP

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");

         /* follow redirects */
         curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);

         /* set Referer: automatically when following redirects */
         curl_easy_setopt(curl, CURLOPT_AUTOREFERER, 1L);

         ret = curl_easy_perform(curl);

         curl_easy_cleanup(curl);
       }

AVAILABILITY

       Along with HTTP

RETURN VALUE

       Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_REFERER(3), CURLOPT_FOLLOWLOCATION(3),