kazoo: add alternative name for sender

src/modules/kazoo/defs.h

@@ -52,6 +52,7 @@
 #define BLF_JSON_CALLID    	"Call-ID"
 #define BLF_JSON_DIALOGID   "Dialog-ID"
 #define BLF_JSON_SENDER    	"Sender-URI"
+#define BLF_JSON_SWITCH_URI	"Switch-URI"
 #define BLF_JSON_ETAG    	"ETag"
 #define BLF_JSON_TOTAG     	"To-Tag"
 #define BLF_JSON_FROMTAG   	"From-Tag"

src/modules/kazoo/kz_pua.c

@@ -392,6 +392,10 @@ int kz_pua_publish_dialoginfo_to_presentity(struct json_object *json_obj)
 	json_extract_field(BLF_JSON_ETAG, etag);
 	json_extract_field(BLF_JSON_SENDER, sender);
 
+	if (sender.len == 0) {
+		json_extract_field(BLF_JSON_SWITCH_URI, sender);
+	}
+
 	struct json_object* ExpiresObj = kz_json_get_object(json_obj, BLF_JSON_EXPIRES);
 	if (ExpiresObj != NULL) {
 		expires = json_object_get_int(ExpiresObj);