1 files changed, 3 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/thin.rb b/actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/thin.rb
index 7ad088b36a..3d4fedff75 100644
--- a/actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/thin.rb
+++ b/actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/thin.rb
@@ -1,9 +1,12 @@
 require "thin"
+require "rack/content_length"
+require "rack/chunked"
 
 module Rack
   module Handler
     class Thin
       def self.run(app, options={})
+        app = Rack::Chunked.new(Rack::ContentLength.new(app))
         server = ::Thin::Server.new(options[:Host] || '0.0.0.0',
                                     options[:Port] || 8080,
                                     app)