On Thu, 16 Apr 2009, e deleflie wrote:
> Hi Hughe
>
> > OK, if we can't get this to work, do you definitely get DNS errors
> > from net/http, or is this an inference based on a hang?
>
> the exact message is: "Hostname not known: blabla.s3.amazonaws.com"
> (without the 'blabla' ofcourse).
>
> Your sample code gives me "#<SocketError: Hostname not
> known:footlewuddlewix.ent" ... looks like the same message.
>
> When I substitute www.google.com, then your example works.
>
> Ok ... so maybe you are right, its not a DNS thing. But why would the
> identical code work on OSX ... ?
Well, it is DNS related, but it doesn't look like a bug in the ruby side
of DNS matters. So, wrapping whatever you're doing in a begin..rescue..end
block may be useful. Maybe you'd want to use Alert instead of a para
in the error case.
So we are now down to looking at how DNS gets queried on Windows.
I know about as much about that as one could braille on a stamp,
being more fluent in Unix, but being rather ignorant about DNS.
But the windows help (at least on vista) says that you can use
nslookup _address_
from the command prompt on windows. nslookup with no arguments
tells me which server it is using. nslookup /? gives a limited
amount of help, better to use it interactively (no arguments) then
type help.
You can tell it which server to use.
Ghastly horrid hack: use %x{...} to invoke nslookup if you are on
Windows, and extract the ip address....
Hugh
>
> Etienne
>
>
> > I just played with:
> >
> > #!shoes
> > require 'net/http'
> > Shoes.app{
> > begin
> > para Net::HTTP.get URI.parse('http://footlewuddlewix.ent/')
> > rescue => e
> > para e.inspect
> > end
> > }
> >
> > and if I don't have the rescue clause I just get a blank app for a
> > nonexistent
> > domain, but I do get useful info in the shoes console (<alt-/>).
> > This works with a real working domain, producing the web page as raw
> > html in the para. With the begin...rescue I get useful results displayed.
> >
> > Hugh
> >
> >> Hi doki_pen,
> >>
> >> I tried doing:
> >>
> >> Shoes.setup do
> >> gem 'dnsruby'
> >> end
> >>
> >> require 'dnsruby'
> >> Resolv = Dnsruby::Resolv
> >>
> >> but Shoes then seems to hang permanently on "Looking for dnsruby". It
> >> could be a chicken and egg problem ... perhaps it cant find dnsruby
> >> because it cant resolve hostnames.
> >>
> >> What is strange is that the 'download' examples work fine ... (and
> >> they resolve the name google.com).
> >>
> >> So maybe it is something about Net::HTTP which breaks, whilst the
> >> 'download' method (which I think calls C++ code) works fine.
> >>
> >> Etienne
> >>
> >>
> >> On Mon, Apr 13, 2009 at 11:36 PM, doki_pen <[email protected]> wrote:
> >> > e deleflie wrote:
> >> >>>
> >> >>> On Mon, 13 Apr 2009, e deleflie wrote:
> >> >>>
> >> >>>
> >> >>>>
> >> >>>> Hi all,
> >> >>>>
> >> >>>> Does anyone know how to fix hostnames not resolving on windows? (they
> >> >>>> do in OSX). This is using net:http.
> >> >>>>
> >> >>>
> >> >>> It would be worth knowing whether
> >> >>> require 'resolv-replace'
> >> >>> fixes this.
> >> >>>
> >> >>
> >> >> it doesn't appear to ... but in my testing, I did get one successful
> >> >> resolving of a domain name (I kept trying an other 6 times all
> >> >> unsuccessful (no code changes))
> >> >>
> >> >> is it possible that resolving DNS it is inconsistent? (or am I going
> >> >> mad?)
> >> >>
> >> >> Etienne
> >> >>
> >> >
> >> > In my experience, ruby's resolv impl is horrid. I've been using dnsruby
> >> > with great success. I think that if there is a timeout on the first dns
> >> > server listed, then ruby gives up(doesn't catch the timeout exception and
> >> > try the next dns server). If you can't use dnsruby, then try switching
> >> > the
> >> > order of your dns servers. BTW, this is how _I_ use dnsruby:
> >> >
> >> > require 'dnsruby'
> >> > Resolv = Dnsruby::Resolv
> >> >
> >>
> >
>
