def send_file(path, opts = {})
      if opts[:type] or not response['Content-Type']
        content_type opts[:type] || File.extname(path), :default => 'application/octet-stream'
      end

      disposition = opts[:disposition]
      filename    = opts[:filename]
      disposition = :attachment if disposition.nil? and filename
      filename    = path        if filename.nil?
      attachment(filename, disposition) if disposition

      last_modified opts[:last_modified] if opts[:last_modified]

      file   = Rack::File.new(File.dirname(settings.app_file))
      result = file.serving(request, path)

      result[1].each { |k,v| headers[k] ||= v }
      headers['Content-Length'] = result[1]['Content-Length']
      opts[:status] &&= Integer(opts[:status])
      halt (opts[:status] || result[0]), result[2]
    rescue Errno::ENOENT
      not_found
    end
def send_file(path, opts = {})
      if opts[:type] or not response['Content-Type']
        content_type opts[:type] || File.extname(path), :default => 'application/octet-stream'
      end

      disposition = opts[:disposition]
      filename    = opts[:filename]
      disposition = :attachment if disposition.nil? and filename
      filename    = path        if filename.nil?
      attachment(filename, disposition) if disposition

      last_modified opts[:last_modified] if opts[:last_modified]

      file   = Rack::File.new(File.dirname(settings.app_file))
      result = file.serving(request, path)

      result[1].each { |k,v| headers[k] ||= v }
      headers['Content-Length'] = result[1]['Content-Length']
      opts[:status] &&= Integer(opts[:status])
      halt (opts[:status] || result[0]), result[2]
    rescue Errno::ENOENT
      not_found
    end
Use the contents of the file at +path+ as the response body.