handle Zap transfers behind chan_agent properly so the agent doesn't get stuck waiting for the call to hang up

git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.2@31520 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 8 insertions, 0 deletions

diff --git a/channel.c b/channel.c
index 77ad5f34e..090174b70 100644
--- a/channel.c
+++ b/channel.c
@@ -2736,6 +2736,14 @@ int ast_channel_masquerade(struct ast_channel *original, struct ast_channel *clo
 	struct ast_frame null = { AST_FRAME_NULL, };
 	int res = -1;
 
+	/* each of these channels may be sitting behind a channel proxy (i.e. chan_agent)
+	   and if so, we don't really want to masquerade it, but its proxy */
+	if (original->_bridge && (original->_bridge != ast_bridged_channel(original)))
+		original = original->_bridge;
+
+	if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)))
+		clone = clone->_bridge;
+
 	if (original == clone) {
 		ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name);
 		return -1;