# File lib/rack/handler.rb, line 46
    def self.default(options = {})
      # Guess.
      if ENV.include?("PHP_FCGI_CHILDREN")
        # We already speak FastCGI
        options.delete :File
        options.delete :Port

        Rack::Handler::FastCGI
      elsif ENV.include?(REQUEST_METHOD)
        Rack::Handler::CGI
      elsif ENV.include?("RACK_HANDLER")
        self.get(ENV["RACK_HANDLER"])
      else
        pick ['thin', 'puma', 'webrick']
      end
    end