1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_REFERER 5Section: 3 6Source: libcurl 7See-also: 8 - CURLOPT_REFERER (3) 9 - curl_easy_getinfo (3) 10 - curl_easy_header (3) 11 - curl_easy_setopt (3) 12Protocol: 13 - HTTP 14Added-in: 7.76.0 15--- 16 17# NAME 18 19CURLINFO_REFERER - get the used referrer request header 20 21# SYNOPSIS 22 23~~~c 24#include <curl/curl.h> 25 26CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_REFERER, char **hdrp); 27~~~ 28 29# DESCRIPTION 30 31Pass in a pointer to a char pointer and get the referrer header used in the 32most recent request. 33 34The **hdrp** pointer is NULL or points to private memory you MUST NOT free - 35it gets freed when you call curl_easy_cleanup(3) on the corresponding 36CURL handle. 37 38# %PROTOCOLS% 39 40# EXAMPLE 41 42~~~c 43int main(void) 44{ 45 CURL *curl = curl_easy_init(); 46 if(curl) { 47 CURLcode res; 48 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 49 curl_easy_setopt(curl, CURLOPT_REFERER, "https://example.org/referrer"); 50 res = curl_easy_perform(curl); 51 if(res == CURLE_OK) { 52 char *hdr = NULL; 53 curl_easy_getinfo(curl, CURLINFO_REFERER, &hdr); 54 if(hdr) 55 printf("Referrer header: %s\n", hdr); 56 } 57 curl_easy_cleanup(curl); 58 } 59} 60~~~ 61 62# %AVAILABILITY% 63 64# RETURN VALUE 65 66Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 67
