From: Josh Allmann <joshua.allmann@gmail.com>
Date: Fri, 28 Oct 2016 14:41:19 +0000 (-0400)
Subject: FS-9654: Fix RTP packet drops
X-Git-Tag: v1.8.0~1146^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4a15d0a3c3e472c62e99f44e00ba5f3abeceeb8e;p=thirdparty%2Ffreeswitch.git

FS-9654: Fix RTP packet drops

There was issue with certain endpoints that would lead to dropping
nearly every other RTP packet from the callee.

The scenario is as follows: the caller (bridged through FreeSWITCH)
offers codecs A and B with payload types X and Y, respectively.
The callee answers with codec B and payload type X.

The fix is to use the sender's expected payload type when checking
against the received RTP packet, rather than the receiver's.
---

diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index 5737434787..1acd1d5b08 100644
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -6841,7 +6841,7 @@ static int rtp_common_read(switch_rtp_t *rtp_session, switch_payload_t *payload_
 						continue;
 					}
 
-					if (rtp_session->last_rtp_hdr.pt == pmap->pt) {
+					if (rtp_session->last_rtp_hdr.pt == pmap->recv_pt) {
 						accept_packet = 1;
 						if (pmapP) {
 							*pmapP = pmap;