From 339e54c7d4fe9d07760f9c40b6685d9c1255e2c9 Mon Sep 17 00:00:00 2001
From: Juha Heinanen <jh@tutpro.com>
Date: Mon, 20 May 2024 08:56:31 +0300
Subject: [PATCH] Performance improvement

---
 src/sip/transp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/sip/transp.c b/src/sip/transp.c
index 8c217a789..ea9e9d43c 100644
--- a/src/sip/transp.c
+++ b/src/sip/transp.c
@@ -314,7 +314,8 @@ static bool have_essential_fields(const struct sip_msg *msg)
 		pl_isset(&(msg->from.auri)) &&
 		pl_isset(&(msg->cseq.met)) &&
 		pl_isset(&(msg->callid)) &&
-		(pl_isset(&(msg->maxfwd)) || !pl_strcmp(&msg->met, "ACK")) &&
+		(pl_isset(&(msg->maxfwd)) ||
+		 !pl_strncmp(&msg->met, "ACK", 3)) &&
 		pl_isset(&(msg->via.branch)))
 		return true;