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Re: Subprocess puzzle and two questions

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Date Thu, 15 Nov 2012 13:04:21 +1100
Subject Re: Subprocess puzzle and two questions
From Chris Angelico <rosuav@gmail.com>
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On Thu, Nov 15, 2012 at 12:49 PM, Roy Smith <roy@panix.com> wrote:
> In article <mailman.3700.1352930072.27098.python-list@python.org>,
>  Chris Angelico <rosuav@gmail.com> wrote:
>
>> I'm slightly surprised that there's no way with the Python stdlib to
>> point a DNS query at a specific server
>
> Me too, including the "only slightly" part.  The normal high-level C
> resolver routines (getaddrinfo/getnameinfo, or even the old
> gethostbyname series), don't expose any way to do that.  You have to dig
> quite far down in the resolver library stack to get to the point where
> you can do that.  The concept of not knowing or caring which specific
> server has the data you need is quite deeply baked into the basic DNS
> architecture.

Indeed. But Python boasts that the batteries are included, and given
the wealth of other networking facilities that are available, it is a
bit of a hole that you can't run DNS queries in this way.

Mind you, if Python's managed to get this far without it being a major
stumbling-block, that probably means that it's not a serious lack. And
I don't think many people write DNS *servers* in Python. (Most people
don't write DNS servers at all, since BIND exists. But I did exactly
that this week, since it would be easier than most other options.)

ChrisA

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Thread

Subprocess puzzle and two questions wrw@mac.com - 2012-11-13 22:34 -0500
  Re: Subprocess puzzle and two questions Roy Smith <roy@panix.com> - 2012-11-13 23:41 -0500
    Re: Subprocess puzzle and two questions William Ray Wing <wrw@mac.com> - 2012-11-14 00:03 -0500
      Re: Subprocess puzzle and two questions Roy Smith <roy@panix.com> - 2012-11-14 09:22 -0500
        Re: Subprocess puzzle and two questions Chris Angelico <rosuav@gmail.com> - 2012-11-15 01:40 +1100
          Re: Subprocess puzzle and two questions roy@panix.com (Roy Smith) - 2012-11-14 11:20 -0500
            Re: Subprocess puzzle and two questions Chris Angelico <rosuav@gmail.com> - 2012-11-15 08:54 +1100
              Re: Subprocess puzzle and two questions Roy Smith <roy@panix.com> - 2012-11-14 20:49 -0500
                Re: Subprocess puzzle and two questions Chris Angelico <rosuav@gmail.com> - 2012-11-15 13:04 +1100
                Re: Subprocess puzzle and two questions Roy Smith <roy@panix.com> - 2012-11-14 21:10 -0500
                Re: Subprocess puzzle and two questions Chris Angelico <rosuav@gmail.com> - 2012-11-15 13:21 +1100
                Re: Subprocess puzzle and two questions Dave Angel <d@davea.name> - 2012-11-14 21:55 -0500
                Re: Subprocess puzzle and two questions Kushal Kumaran <kushal.kumaran+python@gmail.com> - 2012-11-15 10:23 +0530
                Re: Subprocess puzzle and two questions Nobody <nobody@nowhere.com> - 2012-11-15 22:54 +0000
                Re: Subprocess puzzle and two questions Roy Smith <roy@panix.com> - 2012-11-15 20:07 -0500
                Re: Subprocess puzzle and two questions Nobody <nobody@nowhere.com> - 2012-11-17 00:17 +0000
              DNS from Python (was Re: Subprocess puzzle and two questions) aahz@pythoncraft.com (Aahz) - 2012-11-14 21:42 -0800
        Re: Subprocess puzzle and two questions wrw@mac.com - 2012-11-14 09:37 -0500
  Re: Subprocess puzzle and two questions Tim Roberts <timr@probo.com> - 2012-11-13 23:17 -0800

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