68 lines
1.3 KiB
Markdown
68 lines
1.3 KiB
Markdown
---
|
|
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
SPDX-License-Identifier: curl
|
|
Title: CURLOPT_REFERER
|
|
Section: 3
|
|
Source: libcurl
|
|
See-also:
|
|
- CURLINFO_REDIRECT_URL (3)
|
|
- CURLINFO_REFERER (3)
|
|
- CURLOPT_HTTPHEADER (3)
|
|
- CURLOPT_USERAGENT (3)
|
|
---
|
|
|
|
# NAME
|
|
|
|
CURLOPT_REFERER - the HTTP referer header
|
|
|
|
# SYNOPSIS
|
|
|
|
~~~c
|
|
#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
|
|
|
|
~~~c
|
|
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.
|