From f34bb189408ad5db0fba838ac43d048aabb7666d Mon Sep 17 00:00:00 2001
From: Joshua Colp <jcolp@digium.com>
Date: Thu, 8 Nov 2007 01:14:31 +0000
Subject: [PATCH] Merged revisions 89097 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r89097 | file | 2007-11-07 21:11:25 -0400 (Wed, 07 Nov 2007) | 8 lines

Add support for allowing one outgoing transaction. This means if a response comes back out of order chan_sip will still handle it. I dream of a chan_sip with real transaction support.
(closes issue #10946)
Reported by: flefoll
(closes issue #10915)
Reported by: ramonpeek
(closes issue #9567)
Reported by: atca_pres

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89098 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_sip.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index adfa2cead9..e84dd20de4 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -1041,6 +1041,7 @@ struct sip_pvt {
 	ast_group_t callgroup;			/*!< Call group */
 	ast_group_t pickupgroup;		/*!< Pickup group */
 	int lastinvite;				/*!< Last Cseq of invite */
+	int lastnoninvite;                      /*!< Last Cseq of non-invite */
 	struct ast_flags flags[2];		/*!< SIP_ flags */
 
 	/* boolean or small integers that don't belong in flags */
@@ -8055,6 +8056,8 @@ static int transmit_notify_with_sipfrag(struct sip_pvt *p, int cseq, char *messa
 	if (!p->initreq.headers)
 		initialize_initreq(p, &req);
 
+	p->lastnoninvite = p->ocseq;
+
 	return send_request(p, &req, XMIT_RELIABLE, p->ocseq);
 }
 
@@ -16220,10 +16223,10 @@ static int handle_incoming(struct sip_pvt *p, struct sip_request *req, struct so
 		 */
 		int ret = 0;
 
-		if (p->ocseq < seqno) {
+		if (p->ocseq < seqno && seqno != p->lastnoninvite) {
 			ast_debug(1, "Ignoring out of order response %d (expecting %d)\n", seqno, p->ocseq);
 			ret = -1;
-		} else if (p->ocseq != seqno) {
+		} else if (p->ocseq != seqno && seqno != p->lastnoninvite) {
 			/* ignore means "don't do anything with it" but still have to 
 			 * respond appropriately.
 			 * But in this case this is a response already, so we really
-- 
GitLab