new

# File actionpack/lib/action_dispatch/http/response.rb, line 42
      def initialize(status = 200, header = {}, body = [])
        @writer = lambda { |x| @body << x }
        @block = nil
        @length = 0

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

        @cookie = []
        @sending_file = false

        @blank = false

        if content_type = self["Content-Type"]
          type, charset = content_type.split(/;\s*charset=/)
          @content_type = Mime::Type.lookup(type)
          @charset = charset || "UTF-8"
        end

        yield self if block_given?
      end