CURLINFO_REFERER(3) Introduction to Library Functions CURLINFO_REFERER(3)

NAME

CURLINFO_REFERER - used HTTP referrer request header

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_REFERER, char **hdrp);

DESCRIPTION

Pass in a pointer to a char pointer and get the referrer header used
in the most recent request.

The hdrp pointer is NULL or points to private memory. You must not
free it. The memory gets freed automatically when you call
curl_easy_cleanup(3) on the corresponding curl handle.

PROTOCOLS

This functionality affects http only

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode result;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
curl_easy_setopt(curl, CURLOPT_REFERER, "https://example.org/referrer");
result = curl_easy_perform(curl);
if(result == CURLE_OK) {
char *hdr = NULL;
curl_easy_getinfo(curl, CURLINFO_REFERER, &hdr);
if(hdr)
printf("Referrer header: %s\n", hdr);
}
curl_easy_cleanup(curl);
}
}

AVAILABILITY

Added in curl 7.76.0

RETURN VALUE

curl_easy_getinfo(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error
occurred, see libcurl-errors(3).

SEE ALSO

CURLOPT_REFERER(3), curl_easy_getinfo(3), curl_easy_header(3),
curl_easy_setopt(3)

libcurl 2026-01-08 CURLINFO_REFERER(3)