From: Torrey Searle <tsearle@voxbone.com>
Date: Thu, 20 Jan 2022 12:56:27 +0000 (+0100)
Subject: res/res_rtp_asterisk: fix skip in rtp sequence numbers after dtmf
X-Git-Tag: 16.24.0-rc1~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ed95dc32828221afacd769a62044e2b023eb9a19;p=thirdparty%2Fasterisk.git

res/res_rtp_asterisk: fix skip in rtp sequence numbers after dtmf

When generating dtmfs, asterisk can incorrectly think packet loss
occured during the dtmf generation, resulting in a jump in sequence
numbers when forwarding voice frames resumes.  This patch forces
asterisk to re-learn the expected sequence number after each DTMF
to avoid this

ASTERISK-29869 #close

Change-Id: Icc7de3d947b207b82c99d3c327af8095884df853
---

diff --git a/res/res_rtp_asterisk.c b/res/res_rtp_asterisk.c
index da50072dce..31b9dc8041 100644
--- a/res/res_rtp_asterisk.c
+++ b/res/res_rtp_asterisk.c
@@ -4359,6 +4359,9 @@ cleanup:
 	rtp->sending_digit = 0;
 	rtp->send_digit = 0;
 
+	/* Re-Learn expected seqno */
+	rtp->expectedseqno = -1;
+
 	return res;
 }