lib/google/cloud/env.rb in google-cloud-env-1.2.0 vs lib/google/cloud/env.rb in google-cloud-env-1.2.1

@@ -354,10 +354,12 @@
       #
       def metadata?
         path = METADATA_ROOT_PATH
         if @disable_metadata_cache || !metadata_cache.include?(path)
           metadata_cache[path] = retry_or_fail_with false do
-            resp = connection.get path
+            resp = connection.get path do |req|
+              req.headers = { "Metadata-Flavor" => "Google" }
+            end
             resp.status == 200 && resp.headers["Metadata-Flavor"] == "Google"
           end
         end
         metadata_cache[path]
       end