for debug
Iterates over all IP addresses for name retrieved from the hosts file.
Iterates over all hostnames for address retrieved from the hosts file.
Iterates over all IP addresses for name retrieved from the DNS resolver.
name can be a Resolv::DNS::Name or a String. Retrieved addresses will be a Resolv::IPv4 or Resolv::IPv6
Iterates over all hostnames for address retrieved from the DNS resolver.
address must be a Resolv::IPv4, Resolv::IPv6 or a String. Retrieved names will be Resolv::DNS::Name instances.
Iterates over all typeclass DNS resources for name. See getresource for argument details.
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
Creates a socket at address
If address is multicast address then interface_address and multicast_interface can be set as optional.
A created socket is bound to interface_address. If you use IPv4 multicast then the interface of interface_address is used as the inbound interface. If interface_address is omitted or nil then ‘0.0.0.0’ or ‘::1’ is used.
If you use IPv6 multicast then multicast_interface is used as the inbound interface. multicast_interface is a network interface index. If multicast_interface is omitted then 0 (default interface) is used.
Returns an expiry Time based on sec which can be one of: