1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLOPT_HAPROXY_CLIENT_IP 5Section: 3 6Source: libcurl 7Protocol: 8 - All 9See-also: 10 - CURLOPT_HAPROXYPROTOCOL (3) 11 - CURLOPT_PROXY (3) 12Added-in: 8.2.0 13--- 14 15# NAME 16 17CURLOPT_HAPROXY_CLIENT_IP - set HAProxy PROXY protocol client IP 18 19# SYNOPSIS 20 21~~~c 22#include <curl/curl.h> 23 24CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HAPROXY_CLIENT_IP, 25 char *client_ip); 26~~~ 27 28# DESCRIPTION 29 30When this parameter is set to a valid IPv4 or IPv6 numerical address, the 31library sends this address as client address in the HAProxy PROXY protocol v1 32header at beginning of the connection. 33 34This option is an alternative to CURLOPT_HAPROXYPROTOCOL(3) as that one cannot 35use a specified address. 36 37Using this option multiple times makes the last set string override the 38previous ones. Set it to NULL to disable its use again. 39 40The application does not have to keep the string around after setting this 41option. 42 43# DEFAULT 44 45NULL, no HAProxy header is sent 46 47# %PROTOCOLS% 48 49# EXAMPLE 50 51~~~c 52int main(void) 53{ 54 CURL *curl = curl_easy_init(); 55 if(curl) { 56 CURLcode ret; 57 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); 58 curl_easy_setopt(curl, CURLOPT_HAPROXY_CLIENT_IP, "1.1.1.1"); 59 ret = curl_easy_perform(curl); 60 } 61} 62~~~ 63 64# %AVAILABILITY% 65 66# RETURN VALUE 67 68Returns CURLE_OK if HTTP is enabled, and CURLE_UNKNOWN_OPTION if not. 69