From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 10 Nov 2025 00:02:37 +0000 (+0100)
Subject: setopt: disable CURLOPT_HAPROXY_CLIENT_IP on NULL
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c791223743d227bb0773fc4d2b723404b0fdda96;p=thirdparty%2Fcurl.git

setopt: disable CURLOPT_HAPROXY_CLIENT_IP on NULL

As documented.

Reported-by: Stanislav Fort (Aisle Research)
Closes #19434
---

diff --git a/lib/setopt.c b/lib/setopt.c
index 90a1cf24a8..67b5371e87 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -2169,8 +2169,9 @@ static CURLcode setopt_cptr(struct Curl_easy *data, CURLoption option,
      * Set the client IP to send through HAProxy PROXY protocol
      */
     result = Curl_setstropt(&s->str[STRING_HAPROXY_CLIENT_IP], ptr);
-    /* enable the HAProxy protocol */
-    s->haproxyprotocol = TRUE;
+
+    /* enable the HAProxy protocol if an IP is provided */
+    s->haproxyprotocol = !!s->str[STRING_HAPROXY_CLIENT_IP];
     break;
 
 #endif