# File lib/omniauth/strategies/crowd.rb, line 19
      def request_phase
        if env['REQUEST_METHOD'] == 'GET'

          if @configuration.use_sessions? && request.cookies[@configuration.session_cookie]
            redirect callback_url
          else            
            get_credentials
          end

        elsif (env['REQUEST_METHOD'] == 'POST') && (not request.params['username'])
          get_credentials
        else
          session['omniauth.crowd'] = {'username' => request['username'], 'password' => request['password']}
          redirect callback_url
        end
      end