AsyncDNS-cr  Diff

          end
          handle_packet(buf[0, len], addr)
        end
      end
    end

    def handle_packet(packet : Bytes, sender : Socket::IPAddress) : Nil
      io = IO::Memory.new(packet, writeable: false)

      begin
        id = packet[0].to_u16 << 8 | packet[1]

        begin
          context = @queries[id]
        rescue KeyError
          return

        io = IO::Memory.new(packet[4, packet.size - 4], writeable: false)
        qdcount = io.read_bytes(UInt16, IO::ByteFormat::BigEndian)
        adcount = io.read_bytes(UInt16, IO::ByteFormat::BigEndian)
        nscount = io.read_bytes(UInt16, IO::ByteFormat::BigEndian)
        arcount = io.read_bytes(UInt16, IO::ByteFormat::BigEndian)
      rescue IndexError
      rescue IO::EOFError
      end
    end

    def stop : Nil
      @v6_sock.try { |s| s.close }
      @v4_sock.try { |s| s.close }
    end
  end
end