Resolv::MDNS

Class

Resolv::MDNS is a one-shot Multicast DNS (mDNS) resolver. It blindly makes queries to the mDNS addresses without understanding anything about multicast ports.

Information taken form the following places:

RFC 6762

Constants

Port

Default mDNS Port

AddressV4

Default IPv4 mDNS address

AddressV6

Default IPv6 mDNS address

Addresses

Default mDNS addresses

Class Methods

new(config_info=nil)

lib/resolv.rb View on GitHub

          
            # File tmp/rubies/ruby-3.4.1/lib/resolv.rb, line 3187
def initialize(config_info=nil)
  if config_info then
    super({ nameserver_port: Addresses }.merge(config_info))
  else
    super(nameserver_port: Addresses)
  end
end

Creates a new one-shot Multicast DNS (mDNS) resolver.

config_info can be:

nil: Uses the default mDNS addresses
Hash: Must contain :nameserver or :nameserver_port like Resolv::DNS#initialize.

Instance Methods

each_address(name)

lib/resolv.rb View on GitHub

          
            # File tmp/rubies/ruby-3.4.1/lib/resolv.rb, line 3203
def each_address(name)
  name = Resolv::DNS::Name.create(name)

  return unless name[-1].to_s == 'local'

  super(name)
end

Iterates over all IP addresses for name retrieved from the mDNS resolver, provided name ends with “local”. If the name does not end in “local” no records will be returned.

name can be a Resolv::DNS::Name or a String. Retrieved addresses will be a Resolv::IPv4 or Resolv::IPv6