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CURLOPT_H..._CLIENT_IP(3) Library Functions Manual CURLOPT_H..._CLIENT_IP(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. Using this option multiple times makes the last set string override the previous ones. Set it to NULL to disable its use again. The application does not have to keep the string around after setting this option. DEFAULT NULL, no HAProxy header is sent PROTOCOLS This functionality affects all supported protocols 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 Added in curl 8.2.0 RETURN VALUE curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). SEE ALSO CURLOPT_HAPROXYPROTOCOL(3), CURLOPT_PROXY(3) libcurl 2025-06-03 CURLOPT_H..._CLIENT_IP(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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