From: Adam Bozanich <adam.boz@...>
Date: 2007-06-29T09:13:43+09:00
Subject: Re: Using resolv.rb

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On 6/28/07, barjunk <barjunk@attglobal.net> wrote:
>
> Can someone point me to some documentation that shows me with examples
> how to use that ruby library?
>
> I was just trying to point the resolver at a specific DNS server, but
> had trouble figuring out how to do it.
>
> I found the Resolv documentation, but non of the examples showed how
> to change what dns server the resolver library used to resolve the
> names.


Looks like the source code has some stuff that didn't make it to the
documentation:

== Resolv::DNS classDNS stub resolver.=== class methods---
Resolv::DNS.new(config_info=nil)
((|config_info|)) should be nil, a string or a hash.    If nil is given,
/etc/resolv.conf and platform specific information is used.    If a string
is given, it should be a filename which format is same as
/etc/resolv.conf.    If a hash is given, it may contains information for
nameserver, search and ndots as follows.      Resolv::DNS.new
({:nameserver=>["210.251.121.21"], :search=>["ruby-lang.org"], :ndots=>1})

--- Resolv::DNS.open(config_info=nil)
--- Resolv::DNS.open(config_info=nil) {|dns| ...}

Example ( verified ):

require 'resolv'
Resolv::DNS.open({:nameserver=>["206.13.28.12"]}) do |r|
    puts r.getaddress("www.google.com")
end

-Adam

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