Ruby/Network/IP Address

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Содержание

Get all the addresses associated with a hostname

require "resolv"
Resolv.each_address("http://www.google.ru/") do |ip|
  puts ip
end



resolv useful for converting between hostnames and IP addresses

require "resolv"
puts Resolv.getaddress("http://www.google.ru/")



To search for MX records you have to use the Resolv::DNS class

 
require "resolv"
Resolv::DNS.open do |dns|
  mail_servers = dns.getresources("google.ru", Resolv::DNS::Resource::IN::MX)
  mail_servers.each do |server|
    puts "#{server.exchange.to_s} - #{server.preference}"
  end
end



turn IP addresses into hostnames using the getname method

require "resolv"
ip = "192.0.34.166"
begin
  puts Resolv.getname(ip)
rescue
  puts "No hostname associated with #{ip}"
end
Источник — «http://wiki.crossplatform.ru/index.php/Ruby/Network/IP_Address»