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.\" **************************************************************************
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.\" *
.\" * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.\" * are also available at https://curl.se/docs/copyright.html.
.\" *
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.\" * copies of the Software, and permit persons to whom the Software is
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.\"
.TH CURLOPT_AUTOREFERER 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_AUTOREFERER \- automatically update the referer header
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_AUTOREFERER, long autorefer);
.SH DESCRIPTION
Pass a parameter set to 1 to enable this. When enabled, libcurl will
automatically set the Referer: header field in HTTP requests to the full URL
where it follows a Location: redirect.
.SH DEFAULT
0, disabled
.SH PROTOCOLS
HTTP
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  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);

  ret = curl_easy_perform(curl);

  curl_easy_cleanup(curl);
}
.fi
.SH AVAILABILITY
Along with HTTP
.SH RETURN VALUE
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLOPT_REFERER "(3), " CURLOPT_FOLLOWLOCATION "(3), "