From 015b77fed72d6e1c6ad7448bae594c3e44692730 Mon Sep 17 00:00:00 2001
From: Andy Newlands <andynewlands@gmail.com>
Date: Thu, 4 Aug 2022 11:07:33 +0100
Subject: [PATCH] [Core] switch_ivr: Ensure do_flush decrypts SRTP DTMF packets

---
 src/switch_rtp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index e04aed6841..848925269c 100644
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -5913,6 +5913,7 @@ static switch_size_t do_flush(switch_rtp_t *rtp_session, int force, switch_size_
                     }
 #endif
 
+                    // Ensure we properly decrypt SRPT before reading DTMF
                     if (!rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_MKI]) {
                         stat = srtp_unprotect(rtp_session->recv_ctx[rtp_session->srtp_idx_rtp], &rtp_session->recv_msg.header, &sbytes);
                     } else {