From: Christopher Faulet <cfaulet@haproxy.com>
Date: Sun, 5 Apr 2026 07:22:11 +0000 (+0200)
Subject: BUG/MEDIUM: tcpcheck: Properly retrieve tcpcheck type to install the best mux
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=41bded895292573a8fbe9817499c5e996fb5e4ea;p=thirdparty%2Fhaproxy.git

BUG/MEDIUM: tcpcheck: Properly retrieve tcpcheck type to install the best mux

When the healthcheck section support was added, the tcpcheck type was moved
into the tcpcheck ruleset. However, conn_install_mux_chk() function was not
updated accordingly. So the TCP mode was always returned.

No backport needed. This patch is related to #3324 but it is not the root
cause of the issue.
---

diff --git a/src/connection.c b/src/connection.c
index 677f3f474..52a6fb368 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -412,7 +412,7 @@ int conn_install_mux_chk(struct connection *conn, void *ctx, struct session *ses
 		struct ist mux_proto;
 		const char *alpn_str = NULL;
 		int alpn_len = 0;
-		int mode = tcpchk_rules_type_to_proto_mode(check->tcpcheck->flags);
+		int mode = tcpchk_rules_type_to_proto_mode(check->tcpcheck->rs->flags);
 
 		conn_get_alpn(conn, &alpn_str, &alpn_len);
 		mux_proto = ist2(alpn_str, alpn_len);