curl-w32/docs/libcurl/opts/CURLOPT_REFERER.md

c	SPDX-License-Identifier	Title	Section	Source	See-also
Copyright (C) Daniel Stenberg, <daniel.se>, et al.	curl	CURLOPT_REFERER	3	libcurl	CURLINFO_REDIRECT_URL (3) CURLINFO_REFERER (3) CURLOPT_HTTPHEADER (3) CURLOPT_USERAGENT (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.

DEFAULT

NULL

PROTOCOLS

HTTP

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

If built with HTTP support

RETURN VALUE

Returns CURLE_OK if HTTP support is enabled, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.