lib/rack/content_length.rb in rack-2.1.4.4 vs lib/rack/content_length.rb in rack-2.2.0

@@ -1,27 +1,26 @@
 # frozen_string_literal: true
 
-require 'rack/utils'
-require 'rack/body_proxy'
-
 module Rack
 
-  # Sets the Content-Length header on responses with fixed-length bodies.
+  # Sets the Content-Length header on responses that do not specify
+  # a Content-Length or Transfer-Encoding header.  Note that this
+  # does not fix responses that have an invalid Content-Length
+  # header specified.
   class ContentLength
     include Rack::Utils
 
     def initialize(app)
       @app = app
     end
 
     def call(env)
       status, headers, body = @app.call(env)
-      headers = HeaderHash.new(headers)
+      headers = HeaderHash[headers]
 
       if !STATUS_WITH_NO_ENTITY_BODY.key?(status.to_i) &&
          !headers[CONTENT_LENGTH] &&
-         !headers[TRANSFER_ENCODING] &&
-         body.respond_to?(:to_ary)
+         !headers[TRANSFER_ENCODING]
 
         obody = body
         body, length = [], 0
         obody.each { |part| body << part; length += part.bytesize }