神明達哉 <jin...@wide.ad.jp> wrote:
>
> I'm not sure if DDNS update bolsters the need for TCP. In
> my understanding DDNS update exchanges are largely done over UDP
> today (e.g., ISC's nsupdate utility uses UDP by default):
Well, that depends on the transaction size :-) My servers fairly
frequently handle updates containing hundreds or records.
And `nsupdate` basically assumes that TCP is available - it doesn't give
the caller a way to find out what the server's maximum update size is.
(Similarly, my `nsupdate` wrapper `nsdiff` also assumes transactions can
be up to 64KB in size.)
So I think you'll be sad if you try to deploy an UPDATE server without TCP.
Tony.
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