From: Christopher Faulet <cfaulet@haproxy.com>
Date: Fri, 5 May 2023 09:40:07 +0000 (+0200)
Subject: MEDIUM: stconn: Check room needed to unblock SC on fast-forward
X-Git-Tag: v2.8-dev10~36
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=18b3309f38108bdc0ba8d2bff2c66cb74d08f346;p=thirdparty%2Fhaproxy.git

MEDIUM: stconn: Check room needed to unblock SC on fast-forward

During fast-forward, if the SC is waiting for a minimum free space to
receive more data and some data was sent, it is only unblock is the
condition is respected. 0 is special case where the SC is unconditionally
unblocked.
---

diff --git a/src/stconn.c b/src/stconn.c
index 41172519f0..4290961d1f 100644
--- a/src/stconn.c
+++ b/src/stconn.c
@@ -1088,7 +1088,7 @@ static void sc_notify(struct stconn *sc)
 		/* check if the consumer has freed some space either in the
 		 * buffer or in the pipe.
 		 */
-		if (new_len < last_len)
+		if (!sc->room_needed || (new_len < last_len && (sc->room_needed < 0 || channel_recv_max(ic) >= sc->room_needed)))
 			sc_have_room(sc);
 	}