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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
66 lines
1.3 KiB
Markdown
66 lines
1.3 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_REFERER
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_REFERER (3)
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- curl_easy_getinfo (3)
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- curl_easy_header (3)
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- curl_easy_setopt (3)
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Protocol:
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- HTTP
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---
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# NAME
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CURLINFO_REFERER - get the used referrer request header
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_REFERER, char **hdrp);
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~~~
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# DESCRIPTION
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Pass in a pointer to a char pointer and get the referrer header used in the
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most recent request.
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The **hdrp** pointer is NULL or points to private memory you MUST NOT free -
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it gets freed when you call curl_easy_cleanup(3) on the corresponding
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CURL handle.
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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curl_easy_setopt(curl, CURLOPT_REFERER, "https://example.org/referrer");
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res = curl_easy_perform(curl);
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if(res == CURLE_OK) {
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char *hdr = NULL;
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curl_easy_getinfo(curl, CURLINFO_REFERER, &hdr);
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if(hdr)
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printf("Referrer header: %s\n", hdr);
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}
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.76.0
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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