Re: How to retrieve a dns message from a bytebuffer

[Periya.Data <per...@gm...>]

Thanks much for the clarifications Brian.

PD.

On Thu, Sep 1, 2011 at 3:26 PM, Brian Wellington <bwe...@xb...> wrote:

>
> On Sep 1, 2011, at 3:23 PM, Periya.Data wrote:
>
> Also, I get a null pointer exception error when I try to getName.
>
>       // DNS Questions
>         Name qname;
>         int qtype;
>         int qclass;
>
>         Record question = dns_msg.getQuestion();
>         qname = question.getName();        ===> error at this line.
>
> I am not what that means.  A valid record is not found? Is there a nice way
> to check if a valid record has been returned? Maybe I am screwing up with
> the starting of a valid DNS message from the bytebuffer.
>
>
> As I said before, there's a problem with your data.  If you're parsing a
> message, and the DNS header indicates that there are 0 records in all of the
> sections, the message parser won't try to parse any records, so
> Message.getQuestion() would return null.
>
> Brian
>