# File lib/net/ldap.rb, line 712
    def bind(auth=@auth)
      if @open_connection
        @result = @open_connection.bind auth
      else
        begin
          conn = Connection.new( :host => @host, :port => @port , :encryption => @encryption)
          @result = conn.bind auth
        ensure
          conn.close if conn
        end
      end

      @result == 0
    end