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CURLOPT_AUTOREFERER(3)     curl_easy_setopt options     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), libcurl 7.86.0 October 18, 2022 CURLOPT_AUTOREFERER(3)

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