conditionalget.rb in rack-1.0.0

- old
+ new

@@ -1,5 +1,7 @@
+require 'rack/utils'
+
 module Rack
 
   # Middleware that enables conditional GET using If-None-Match and
   # If-Modified-Since. The application should set either or both of the
   # Last-Modified or Etag response headers according to RFC 2616. When
@@ -22,9 +24,11 @@
 
       status, headers, body = @app.call(env)
       headers = Utils::HeaderHash.new(headers)
       if etag_matches?(env, headers) || modified_since?(env, headers)
         status = 304
+        headers.delete('Content-Type')
+        headers.delete('Content-Length')
         body = []
       end
       [status, headers, body]
     end
 