Tribblix: manual page: CURLOPT

CURLOPT_REFERER(3) Introduction to Library Functions CURLOPT_REFERER(3)

NAME

CURLOPT_REFERER - the HTTP referer header

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_REFERER, char *where);

DESCRIPTION

Pass a pointer to a null-terminated string as parameter. It is used
to set the Referer: header field in the HTTP request sent to the
remote server. You can set any custom header with
CURLOPT_HTTPHEADER(3).

The application does not have to keep the string around after setting
this option.

Using this option multiple times makes the last set string override
the previous ones. Set it to NULL to disable its use again.

DEFAULT

NULL

PROTOCOLS

This functionality affects http only

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

/* tell it where we found the link to this place */
curl_easy_setopt(curl, CURLOPT_REFERER, "https://example.org/me.html");

curl_easy_perform(curl);
}
}

AVAILABILITY

Added in curl 7.1

RETURN VALUE

curl_easy_setopt(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).