new

# File actionpack/lib/action_dispatch/http/response.rb, line 118
    def initialize(status = 200, header = {}, body = [])
      super()

      header = merge_default_headers(header, self.class.default_headers)

      self.body, self.header, self.status = body, header, status

      @sending_file = false
      @blank        = false
      @cv           = new_cond
      @committed    = false
      @sending      = false
      @sent         = false
      @content_type = nil
      @charset      = nil

      if content_type = self[CONTENT_TYPE]
        type, charset = content_type.split(/;\s*charset=/)
        @content_type = Mime::Type.lookup(type)
        @charset = charset || self.class.default_charset
      end

      prepare_cache_control!

      yield self if block_given?
    end