From 4d2906cca99c376401c6b79bec3be0fc2f646f44 Mon Sep 17 00:00:00 2001
From: Razvan Crainea <razvan@opensips.org>
Date: Thu, 22 Apr 2021 10:29:29 +0300
Subject: [PATCH] dialog: only raise event if someone is listening

(cherry picked from commit f5f85b677cceeb3ccf6c46a8f7428bc88652a977)
---
 modules/dialog/dlg_hash.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/dialog/dlg_hash.c b/modules/dialog/dlg_hash.c
index e9c639fc5be..7ad6366c685 100644
--- a/modules/dialog/dlg_hash.c
+++ b/modules/dialog/dlg_hash.c
@@ -945,6 +945,9 @@ static void raise_state_changed_event(struct dlg_cell *dlg,
 	str s1, s2;
 	int callee_leg_idx;
 
+	if (!evi_probe_event(ei_st_ch_id))
+		return;
+
 	s1.s = int2bstr( (unsigned long)dlg->h_entry, b1, &s1.len);
 	s2.s = int2bstr( (unsigned long)dlg->h_id, b2, &s2.len);
 	if (s1.s==NULL || s2.s==NULL) {