diff options
Diffstat (limited to 'railties/lib/rails/rack/content_length.rb')
| -rw-r--r-- | railties/lib/rails/rack/content_length.rb | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/railties/lib/rails/rack/content_length.rb b/railties/lib/rails/rack/content_length.rb new file mode 100644 index 0000000000..6839af4152 --- /dev/null +++ b/railties/lib/rails/rack/content_length.rb @@ -0,0 +1,38 @@ +require 'action_dispatch' +require 'rack/utils' + +module Rails + module Rack + # Sets the Content-Length header on responses with fixed-length bodies. + class ContentLength + include ::Rack::Utils + + def initialize(app, sendfile=nil) + @app = app + @sendfile = sendfile + end + + def call(env) + status, headers, body = @app.call(env) + headers = HeaderHash.new(headers) + + if !STATUS_WITH_NO_ENTITY_BODY.include?(status.to_i) && + !headers['Content-Length'] && + !headers['Transfer-Encoding'] && + !(@sendfile && headers[@sendfile]) + + old_body = body + body, length = [], 0 + old_body.each do |part| + body << part + length += bytesize(part) + end + old_body.close if old_body.respond_to?(:close) + headers['Content-Length'] = length.to_s + end + + [status, headers, body] + end + end + end +end
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