Centralize common headers, this will help up to move biz metrics out of the process

lib/api/middlewares/send-response.js

@@ -1,20 +1,24 @@
 'use strict';
 
+const setCommonHeaders = require('../../utils/common-headers');
+
 module.exports = function sendResponse () {
     return function sendResponseMiddleware (req, res, next) {
-        res.status(res.statusCode);
+        setCommonHeaders(req, res, () => {
+            res.status(res.statusCode);
 
-        if (Buffer.isBuffer(res.body)) {
-            res.send(res.body);
+            if (Buffer.isBuffer(res.body)) {
+                res.send(res.body);
+                return next();
+            }
+
+            if (req.query.callback) {
+                res.jsonp(res.body);
+                return next();
+            }
+
+            res.json(res.body);
             return next();
-        }
-
-        if (req.query.callback) {
-            res.jsonp(res.body);
-            return next();
-        }
-
-        res.json(res.body);
-        return next();
+        });
     };
 };