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Message from discussion Errno:ECONNREFUSED - DNS query
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craayzie  
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 More options Apr 4 2011, 12:04 pm
From: craayzie <flesh...@gmail.com>
Date: Mon, 4 Apr 2011 09:04:17 -0700 (PDT)
Local: Mon, Apr 4 2011 12:04 pm
Subject: Re: Errno:ECONNREFUSED - DNS query
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very nice catch as well - but also works just fine on Heroku ..

>> puts `dig +tcp www.abc.com @8.8.8.8`

; <<>> DiG 9.6-ESV-R3 <<>> +tcp www.abc.com @8.8.8.8
;; global options: +cmd
;; Got answer:
...

On Apr 4, 8:58 am, kowsik <kow...@gmail.com> wrote:

> dig uses udp by default. But from your error, it appears that Dnsruby
> might be using tcp. Maybe try

> dig +tcpwww.abc....@8.8.8.8

> K.
> ---http://blitz.iohttp://twitter.com/pcapr

> On Mon, Apr 4, 2011 at 8:24 AM, craayzie <flesh...@gmail.com> wrote:
> > Thanks for replying Matt and good catch on the nameserver IP - it was
> > a typo. Unfortunately, I get the exact same connection error message
> > from Heroku when using an IP that dig has no problem connecting to
> > (e.g. Google's public DNS server 8.8.8.8):

> >>> res = Dnsruby::Resolver.new({:nameserver => "8.8.8.8"})
> > ...
> >>> ret = res.query('www.abc.com')
> > Errno::ECONNREFUSED: Connection refused - connect(2)

> >>> puts `digwww.abc....@8.8.8.8`

> > ; <<>> DiG 9.6-ESV-R3 <<>>www.abc....@8.8.8.8
> > ;; global options: +cmd
> > ;; Got answer:
> > ...

> > Any ideas?

> > On Apr 4, 5:50 am, Matthew Todd <matt...@matthewtodd.org> wrote:
> >> Hi, Craayzie --

> >> > >> res = Dnsruby::Resolver.new({:nameserver => ["68.87.76.182"]})
> >> > >> ret = res.query("www.abc.com")
> >> > Errno::ECONNREFUSED: Connection refused - connect(2)

> >> For what it's worth, I just tried running `dig` in a Heroku console.

> >> Querying the nameserver you mentioned didn't work:

> >>         >> puts `dig @68.87.78.182www.abc.com`

> >>         ; <<>> DiG 9.6-ESV-R3 <<>> @68.87.78.182www.abc.com
> >>         ; (1 server found)
> >>         ;; global options: +cmd
> >>         ;; connection timed out; no servers could be reached

> >>         => nil

> >> While querying Google's public DNS did:

> >>         >> puts `dig @8.8.8.8www.abc.com`

> >>         ; <<>> DiG 9.6-ESV-R3 <<>> @8.8.8.8www.abc.com
> >>         ; (1 server found)
> >>         ;; global options: +cmd
> >>         ;; Got answer:
> >>         ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33218
> >>         ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

> >>         ;; QUESTION SECTION:
> >>         ;www.abc.com.                   IN      A

> >>         ;; ANSWER SECTION:
> >>        www.abc.com.            248     IN      CNAME   abc.com.
> >>         abc.com.                248     IN      A       199.181.132.250

> >>         ;; Query time: 4 msec
> >>         ;; SERVER: 8.8.8.8#53(8.8.8.8)
> >>         ;; WHEN: Mon Apr  4 05:24:49 2011
> >>         ;; MSG SIZE  rcvd: 59

> >>         => nil

> >> Hope this gives you some kind of a lead,  -- Matthew

> >>  smime.p7s
> >> 4KViewDownload

> > --
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