Try to get hostname first

Author: connor4312

lib/parsers.js

@@ -81,7 +81,7 @@ module.exports.parseRequest = function parseRequest(req, kwargs) {
     //   express: req.hostname in > 4 and req.host in < 4
     //   koa: req.host
     //
-    var host = req.host || req.hostname || headers.host || '<no host>';
+    var host = req.hostname || req.host || headers.host || '<no host>';
 
     // protocol:
     //