server_timing.rb in actionpack-7.1.0.beta1

- old
+ new

@@ -2,12 +2,10 @@
 
 require "active_support/notifications"
 
 module ActionDispatch
   class ServerTiming
-    SERVER_TIMING_HEADER = "Server-Timing"
-
     class Subscriber # :nodoc:
       include Singleton
       KEY = :action_dispatch_server_timing_events
 
       def initialize
@@ -65,11 +63,13 @@
 
       header_info = events.group_by(&:name).map do |event_name, events_collection|
         "%s;dur=%.2f" % [event_name, events_collection.sum(&:duration)]
       end
 
-      header_info.prepend(headers[SERVER_TIMING_HEADER]) if headers[SERVER_TIMING_HEADER].present?
-      headers[SERVER_TIMING_HEADER] = header_info.join(", ")
+      if headers[ActionDispatch::Constants::SERVER_TIMING].present?
+        header_info.prepend(headers[ActionDispatch::Constants::SERVER_TIMING])
+      end
+      headers[ActionDispatch::Constants::SERVER_TIMING] = header_info.join(", ")
 
       response
     end
   end
 end