Merged revisions 31520 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r31520 | kpfleming | 2006-06-01 15:27:50 -0500 (Thu, 01 Jun 2006) | 2 lines

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

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@31522 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channel.c

@@ -2829,6 +2829,14 @@ int ast_channel_masquerade(struct ast_channel *original, struct ast_channel *clo
 {
 	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;

include/asterisk/channel.h

@@ -311,8 +311,9 @@ struct ast_channel {
 	/*! Current active data generator */
 	struct ast_generator *generator;
 
-	/*! Who are we bridged to, if we're bridged  Do not access directly,
+	/*! Who are we bridged to, if we're bridged. Who is proxying for us,
-	    use ast_bridged_channel(chan) */
+	  if we are proxied (i.e. chan_agent).
+	  Do not access directly, use ast_bridged_channel(chan) */
 	struct ast_channel *_bridge;
 	/*! Channel that will masquerade as us */
 	struct ast_channel *masq;