CURLINFO_REFERER(3) Library Functions Manual 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 2026-03-23 CURLINFO_REFERER(3)
curl 8.19.0 - Generated Thu Mar 26 15:53:09 CDT 2026