NAME

       CURLOPT_HAPROXYPROTOCOL - send HAProxy PROXY protocol v1 header

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HAPROXYPROTOCOL,
                                 long haproxy_protocol);

DESCRIPTION

       A long parameter set to 1 tells the library to send an HAProxy PROXY protocol v1 header at
       beginning of the connection. The default action is not to send this header.

       This option is primarily useful when sending test requests to a service that expects  this
       header.

       Most applications do not need this option.

DEFAULT

       0, do not send any HAProxy PROXY protocol header

PROTOCOLS

       HTTP

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
         CURLcode ret;
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
         curl_easy_setopt(curl, CURLOPT_HAPROXYPROTOCOL, 1L);
         ret = curl_easy_perform(curl);
       }

AVAILABILITY

       Along with HTTP. Added in 7.60.0.

RETURN VALUE

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