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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 automatically sets the Referer: header field in HTTP requests to the full URL when it follows a Location: redirect to a new destination.
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¶
int main(void) {
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
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);
res = 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¶
CURLINFO_EFFECTIVE_URL(3), CURLINFO_REDIRECT_URL(3), CURLOPT_FOLLOWLOCATION(3), CURLOPT_REFERER(3)
December 4, 2023 | ibcurl 8.5.0 |