Type:
Class
Constants:
DefaultResolver
:
self.new
Default resolver to use for Resolv class methods.
AddressRegex
:
/(?:#{IPv4::Regex})|(?:#{IPv6::Regex})/
Address Regexp to use for matching IP addresses.
Resolv is a thread-aware DNS resolver library written in Ruby. Resolv can handle multiple DNS requests concurrently without blocking the entire ruby interpreter.
See also resolv-replace.rb to replace the libc resolver with Resolv.
Resolv can look up various DNS resources using the DNS module directly.
Examples:
p Resolv.getaddress "www.ruby-lang.org"
p Resolv.getname "210.251.121.214"
Resolv::DNS.open do |dns|
ress = dns.getresources "www.ruby-lang.org", Resolv::DNS::Resource::IN::A
p ress.map { |r| r.address }
ress = dns.getresources "ruby-lang.org", Resolv::DNS::Resource::IN::MX
p ress.map { |r| [r.exchange.to_s, r.preference] }
end
Bugs
-
NIS is not supported.
-
/etc/nsswitch.conf is not supported.