From 4942fd94d2201b92eed4c08d88313a98dab0ff2d Mon Sep 17 00:00:00 2001
From: Joshua Colp <jcolp@digium.com>
Date: Thu, 11 Jan 2007 05:21:03 +0000
Subject: [PATCH] Merged revisions 50466 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r50466 | file | 2007-01-11 00:19:39 -0500 (Thu, 11 Jan 2007) | 2 lines

Add support to see whether NAT was detected (yay symmetric RTP) and also add a check in chan_sip so that if NAT has been detected and the reinvite behind nat option has been turned off, then just do partial bridge. (issue #8655 reported by mnicholson)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@50467 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_sip.c    | 4 +++-
 include/asterisk/rtp.h | 2 ++
 main/rtp.c             | 5 +++++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 2707f0ca07..010a4085de 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -16894,7 +16894,9 @@ static enum ast_rtp_get_result sip_get_rtp_peer(struct ast_channel *chan, struct
 
 	*rtp = p->rtp;
 
-	if (ast_test_flag(&p->flags[0], SIP_CAN_REINVITE))
+	if (ast_rtp_getnat(*rtp) && !ast_test_flag(&p->flags[0], SIP_CAN_REINVITE_NAT))
+		res = AST_RTP_TRY_PARTIAL;
+	else if (ast_test_flag(&p->flags[0], SIP_CAN_REINVITE))
 		res = AST_RTP_TRY_NATIVE;
 	else if (ast_test_flag(&global_jbconf, AST_JB_FORCED))
 		res = AST_RTP_GET_FAILED;
diff --git a/include/asterisk/rtp.h b/include/asterisk/rtp.h
index 2edff8cadb..85f3b19030 100644
--- a/include/asterisk/rtp.h
+++ b/include/asterisk/rtp.h
@@ -186,6 +186,8 @@ char *ast_rtp_lookup_mime_multiple(char *buf, size_t size, const int capability,
 
 void ast_rtp_setnat(struct ast_rtp *rtp, int nat);
 
+int ast_rtp_getnat(struct ast_rtp *rtp);
+
 /*! \brief Indicate whether this RTP session is carrying DTMF or not */
 void ast_rtp_setdtmf(struct ast_rtp *rtp, int dtmf);
 
diff --git a/main/rtp.c b/main/rtp.c
index b4c37087d9..e80cb3ead7 100644
--- a/main/rtp.c
+++ b/main/rtp.c
@@ -591,6 +591,11 @@ void ast_rtp_setnat(struct ast_rtp *rtp, int nat)
 	rtp->nat = nat;
 }
 
+int ast_rtp_getnat(struct ast_rtp *rtp)
+{
+	return ast_test_flag(rtp, FLAG_NAT_ACTIVE);
+}
+
 void ast_rtp_setdtmf(struct ast_rtp *rtp, int dtmf)
 {
 	ast_set2_flag(rtp, dtmf ? 1 : 0, FLAG_HAS_DTMF);
-- 
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