Apologies in advance if this is the wrong place to post, appreciate any
pointers to the right place if I've polluted the wrong thread
Specifics:
ruby 1.8.2 (2004-12-25) [i686-linux]
Host: Linux gentoo 2.6.12
My linux box does not run a nameserver, as it is a home machine that I use
for development. I connect to the internet through a Dlink router and
cable-modem.
When I do a Socket/TCPSocket.gethostbyname call from within ruby, for
"unknown" hosts it returns an array that corresponds to my DynDNS domain name
with my "public IP address"
When I run `nslookup` it returns:
** server can't find foo.foobar.frt: NXDOMAIN
With the socket version it is more complicated for me to determine bad hosts
and I certainly can't do it in a portable way, so I'd like to set things up so
the Ruby.Socket code returns a proper error.
I'm guessing this has something to do with my (improper) configuration of my
system or router. Any help would be appreciated
I am curious why I would get different behaviours from the Ruby gethostbyname
and nsslookup which I would imagine should resolve down to a gethostbyname
call as well.
Ideas?
Again, apologies if I've posted to the wrong place.
···
--
Frank Goodman
mailto:frank.goodman@roi-ibs.com
I don't think this is a ruby issue...
$ nslookup foo.foobar.frt
Server: 192.168.1.15
Address: 192.168.1.15#53
** server can't find foo.foobar.frt: NXDOMAIN
$ ruby -rsocket -e 'Socket.gethostbyname("foo.foobar.frt")'
-e:1:in `gethostbyname': getaddrinfo: hostname nor servname provided, or not known (SocketError)
from -e:1
Ruby uses the libc resolver to look up domain names. (I forget if nslookup uses libc or its own builtin resolver... host does under OS X.)
Try also the pure-ruby DNS resolver:
$ ruby -rresolv -e 'p Resolv.getaddress("foo.foobar.frt")'
/usr/local/lib/ruby/1.8/resolv.rb:89:in `getaddress': no address for foo.foobar.frt (Resolv::ResolvError)
from /usr/local/lib/ruby/1.8/resolv.rb:39:in `getaddress'
from -e:1
···
On 19 Sep 2005, at 13:26, Frank Goodman wrote:
Apologies in advance if this is the wrong place to post, appreciate any
pointers to the right place if I've polluted the wrong thread
Specifics:
ruby 1.8.2 (2004-12-25) [i686-linux]
Host: Linux gentoo 2.6.12
My linux box does not run a nameserver, as it is a home machine that I use
for development. I connect to the internet through a Dlink router and
cable-modem.
When I do a Socket/TCPSocket.gethostbyname call from within ruby, for
"unknown" hosts it returns an array that corresponds to my DynDNS domain name
with my "public IP address"
When I run `nslookup` it returns:
** server can't find foo.foobar.frt: NXDOMAIN
With the socket version it is more complicated for me to determine bad hosts
and I certainly can't do it in a portable way, so I'd like to set things up so
the Ruby.Socket code returns a proper error.
I'm guessing this has something to do with my (improper) configuration of my
system or router. Any help would be appreciated
I am curious why I would get different behaviours from the Ruby gethostbyname
and nsslookup which I would imagine should resolve down to a gethostbyname
call as well.
Ideas?
--
Eric Hodel - drbrain@segment7.net - http://segment7.net
FEC2 57F1 D465 EB15 5D6E 7C11 332A 551C 796C 9F04
Apologies in advance if this is the wrong place to post, appreciate any
pointers to the right place if I've polluted the wrong thread
Specifics:
ruby 1.8.2 (2004-12-25) [i686-linux]
Host: Linux gentoo 2.6.12
My linux box does not run a nameserver, as it is a home machine that I use
for development. I connect to the internet through a Dlink router and
cable-modem.
When I do a Socket/TCPSocket.gethostbyname call from within ruby, for
"unknown" hosts it returns an array that corresponds to my DynDNS domain name
with my "public IP address"
When I run `nslookup` it returns:
** server can't find foo.foobar.frt: NXDOMAIN
With the socket version it is more complicated for me to determine bad hosts
and I certainly can't do it in a portable way, so I'd like to set things up so
the Ruby.Socket code returns a proper error.
I'm guessing this has something to do with my (improper) configuration of my
system or router. Any help would be appreciated
I am curious why I would get different behaviours from the Ruby gethostbyname
and nsslookup which I would imagine should resolve down to a gethostbyname
call as well.
Ideas?
I don't think this is a ruby issue...
$ nslookup foo.foobar.frt
Server: 192.168.1.15
Address: 192.168.1.15#53
** server can't find foo.foobar.frt: NXDOMAIN
$ ruby -rsocket -e 'Socket.gethostbyname("foo.foobar.frt")'
-e:1:in `gethostbyname': getaddrinfo: hostname nor servname provided, or not known (SocketError)
from -e:1
Ruby uses the libc resolver to look up domain names. (I forget if nslookup uses libc or its own builtin resolver... host does under OS X.)
... host uses its own builtin resolver under OS X ...
···
On 19 Sep 2005, at 16:49, Eric Hodel wrote:
On 19 Sep 2005, at 13:26, Frank Goodman wrote:
Try also the pure-ruby DNS resolver:
$ ruby -rresolv -e 'p Resolv.getaddress("foo.foobar.frt")'
/usr/local/lib/ruby/1.8/resolv.rb:89:in `getaddress': no address for foo.foobar.frt (Resolv::ResolvError)
from /usr/local/lib/ruby/1.8/resolv.rb:39:in `getaddress'
from -e:1
--
Eric Hodel - drbrain@segment7.net - http://segment7.net
FEC2 57F1 D465 EB15 5D6E 7C11 332A 551C 796C 9F04
--
Eric Hodel - drbrain@segment7.net - http://segment7.net
FEC2 57F1 D465 EB15 5D6E 7C11 332A 551C 796C 9F04