[net-dns-users] AXFR (was: Re: sep() and is_sep())

Calle Dybedahl calle at init.se
Mon Jun 2 07:31:47 UTC 2014

On 28 maj 2014, at 16:28, Dick Franks <rwfranks at acm.org> wrote:

> The 3rd party back-compatibility issue did not cross my mind when I did that.

I just found that the interface to AXFR has also changed completely. Apart from the backwards compatibility issue, which is more difficult to patch around here than for sep/is_sep), I have two questions:

1) Without the concluding SOA record, how do I tell if the server sent me the whole zone or stopped in the middle?

2) Returning all RRs in a single list rather than giving me one at a time increases memory usage *a lot* for large zones. We have at least one application that does work on all 1.3 million records of .se, and while I have not yet done any measurements, it’s memory-constrained on its machine today and I’m pretty sure this change will make it unable to run at all. Suggestions?

Calle Dybedahl
calle at init.se -*- +46 703 - 970 612

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