Getting a DNS TXT record in Ruby

Question

I need to get the txt field from the DNS record. Is there any ruby api to do something like this?

nslookup -q=txt xxxx.com

Thanks

Answer 1

Try the Net::DNS gem. Scroll down on that page for installation and usage instructions.

Answer 2

Or use system("nslookup -q=txt xxxx.com")

Answer 3

Try installing the dnsruby gem.

The code is actively maintained, and used in some significant production systems.

require 'rubygems'
require 'dnsruby'
include Dnsruby

# Use the system configured nameservers to run a query
res = Dnsruby::Resolver.new
ret = res.query("google.com", Types.TXT)
print ret.answer

(Code tested on MacOS X - prints the Google SPF record)

See also @Alex's answer which is more idiomatic Ruby - Alex is the author of dnsruby.

Answer 4

require 'dnsruby'
Dnsruby::DNS.open {|dns|
  dns.each_resource("google.com", "TXT") {|rr| print rr}
    # or
  print dns.getresource("google.com", "TXT")}
}