Index: apps/app_transfer.c
===================================================================
RCS file: /usr/cvsroot/asterisk/apps/app_transfer.c,v
retrieving revision 1.11
diff -u -r1.11 app_transfer.c
--- apps/app_transfer.c	6 Jun 2005 22:39:32 -0000	1.11
+++ apps/app_transfer.c	26 Jul 2005 21:10:43 -0000
@@ -25,6 +25,7 @@
 #include "asterisk/channel.h"
 #include "asterisk/pbx.h"
 #include "asterisk/module.h"
+#include "asterisk/options.h"
 
 static char *tdesc = "Transfer";
 
@@ -38,8 +39,14 @@
 "an incoming call with the same channel technology will be transfered.\n"
 "Note that for SIP, if you transfer before call is setup, a 302 redirect\n"
 "SIP message will be returned to the caller.\n"
+"\nThe result of the application will be reported in the TRANSFERSTATUS\n"
+"channel variable:\n"
+"       SUCCESS       Transfer succeeded\n"
+"       FAILURE      Transfer failed\n"
+"       UNSUPPORTED  Transfer unsupported by channel driver\n"
 "Returns -1 on hangup, or 0 on completion regardless of whether the\n"
-"transfer was successful.  If the transfer was *not* supported or\n"
+"transfer was successful.\n\n"
+"Old depraciated behaviour: If the transfer was *not* supported or\n"
 "successful and there exists a priority n + 101,\n"
 "then that priority will be taken next.\n" ;
 
@@ -54,28 +61,42 @@
 	struct localuser *u;
 	char *slash;
 	char *dest = data;
+	char *status = "FAILURE";
+
 	if (!data || !strlen(data)) {
 		ast_log(LOG_WARNING, "Transfer requires an argument ([Tech/]destination)\n");
+		pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", status);
 		res = 1;
 	}
 	if ((slash = strchr((char *)data, '/')) && (len = (slash - (char *)data))) {
 		dest = slash + 1;
 		/* Allow execution only if the Tech/destination agrees with the type of the channel */
-		if (strncasecmp(chan->type, (char *)data, len))
+		if (strncasecmp(chan->type, (char *)data, len)) {
+			pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", status);
 			return 0;
+		}
 	}
 	LOCAL_USER_ADD(u);
+	/* Check if the channel supports transfer before we try it */
+	if (!chan->tech->transfer) {
+		status = "UNSUPPORTED";
+		pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", status);
+		return 0;
+	}
 	if (!res) {
 		res = ast_transfer(chan, dest);
-
 	}
 	if (!res) {
+		status = "FAILURE";
 		/* Look for a "busy" place */
-		if (ast_exists_extension(chan, chan->context, chan->exten, chan->priority + 101, chan->cid.cid_num))
+		if (option_priority_jumping && ast_exists_extension(chan, chan->context, chan->exten, chan->priority + 101, chan->cid.cid_num))
 			chan->priority += 100;
 	}
-	if (res > 0)
+	if (res > 0) {
+		status = "SUCCESS";
 		res = 0;
+	}
+	pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", status);
 	LOCAL_USER_REMOVE(u);
 	return res;
 }