curl-w32/docs/libcurl/opts/CURLOPT_HAPROXY_CLIENT_IP.md

c	SPDX-License-Identifier	Title	Section	Source	See-also
Copyright (C) Daniel Stenberg, <daniel.se>, et al.	curl	CURLOPT_HAPROXY_CLIENT_IP	3	libcurl	CURLOPT_HAPROXYPROTOCOL (3) CURLOPT_PROXY (3)

NAME

CURLOPT_HAPROXY_CLIENT_IP - set HAProxy PROXY protocol client IP

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HAPROXY_CLIENT_IP,
                          char *client_ip);

DESCRIPTION

When this parameter is set to a valid IPv4 or IPv6 numerical address, the library sends this address as client address in the HAProxy PROXY protocol v1 header at beginning of the connection.

This option is an alternative to CURLOPT_HAPROXYPROTOCOL(3) as that one cannot use a specified address.

DEFAULT

NULL, no HAProxy header is sent

PROTOCOLS

HTTP, HAProxy PROTOCOL

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode ret;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    curl_easy_setopt(curl, CURLOPT_HAPROXY_CLIENT_IP, "1.1.1.1");
    ret = curl_easy_perform(curl);
  }
}

AVAILABILITY

Along with HTTP. Added in 8.2.0.

RETURN VALUE

Returns CURLE_OK if HTTP is enabled, and CURLE_UNKNOWN_OPTION if not.