From: Willy Tarreau <w@1wt.eu>
Date: Tue, 5 May 2026 09:40:29 +0000 (+0200)
Subject: BUG/MINOR: mux-h2: condition the processing of 8441 extension to global setting
X-Git-Tag: v3.4-dev11~52
X-Git-Url: http://www.kaiwu.me/postgresql/commit/static/gitweb.js?a=commitdiff_plain;h=9986ad65a4af0b5e4212f1d12e108090490a8c2d;p=haproxy.git

BUG/MINOR: mux-h2: condition the processing of 8441 extension to global setting

When rfc8441 (extended connect) is disabled via
h2-workaround-bogus-websocket-clients, we properly refrain from
advertising support for extended connect, but we should also ignore
the incoming setting, otherwise it can remain enabled if the client
advertises it.

This should be backported to stable versions.
---

diff --git a/src/mux_h2.c b/src/mux_h2.c
index 1c720a44d..61e7db54b 100644
--- a/src/mux_h2.c
+++ b/src/mux_h2.c
@@ -2935,7 +2935,8 @@ static int h2c_handle_settings(struct h2c *h2c)
 			}
 			break;
 		case H2_SETTINGS_ENABLE_CONNECT_PROTOCOL:
-			if (arg == 1)
+			/* setting only considered if rfc8441 not disabled */
+			if (arg == 1 && !(global.tune.options & GTUNE_DISABLE_H2_WEBSOCKET))
 				h2c->flags |= H2_CF_RCVD_RFC8441;
 			break;
 		}