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CURLOPT_AUTOREFERER(3)              libcurl             CURLOPT_AUTOREFERER(3)


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),

ibcurl 8.1.2                    April 26, 2023          CURLOPT_AUTOREFERER(3)

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