API changes to accommodate 3rd party clients

server/routes/metadata.js

@@ -29,6 +29,8 @@ module.exports = async function(req, res) {
     const ttl = await storage.ttl(id);
     res.send({
       metadata: meta.metadata,
+      dtotal: meta.dl,
+      dlimit: meta.dlimit,
       size,
       ttl
     });