From 449cc82943f434f43987203db9448e431f9efd09 Mon Sep 17 00:00:00 2001
From: Victor Julien <vjulien@oisf.net>
Date: Tue, 18 Jan 2022 14:52:13 +0100
Subject: [PATCH] proto-detect: fix UDP not setting alproto_ts/tc

This would lead to the `app-layer-protocol` keyword not matching correctly.
---
 src/app-layer.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/app-layer.c b/src/app-layer.c
index 073a693fb..0996c1643 100644
--- a/src/app-layer.c
+++ b/src/app-layer.c
@@ -769,6 +769,12 @@ int AppLayerHandleUdp(ThreadVars *tv, AppLayerThreadCtx *tctx, Packet *p, Flow *
         if (f->alproto != ALPROTO_UNKNOWN) {
             AppLayerIncFlowCounter(tv, f);
 
+            if (p->flowflags & FLOW_PKT_TOSERVER) {
+                f->alproto_ts = f->alproto;
+            } else {
+                f->alproto_tc = f->alproto;
+            }
+
             if (reverse_flow) {
                 SCLogDebug("reversing flow after proto detect told us so");
                 PacketSwap(p);
-- 
2.47.3