Re: How to retrieve a dns message from a bytebuffer

[Brian W. <bwe...@xb...>]

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