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Editing: content_length.rb
require 'rack/utils' require 'rack/body_proxy' module Rack # Sets the Content-Length header on responses with fixed-length bodies. class ContentLength include Rack::Utils def initialize(app) @app = app 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'] && body.respond_to?(:to_ary) obody = body body, length = [], 0 obody.each { |part| body << part; length += bytesize(part) } body = BodyProxy.new(body) do obody.close if obody.respond_to?(:close) end headers[CONTENT_LENGTH] = length.to_s end [status, headers, body] end end end
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