Ruby 2.4 Resolv 目录 Resolv Resolv::DNS Resolv::DNS::Config::NXDomain Resolv::DNS::Config::OtherResolvError Resolv::DNS::DecodeError Resolv::DNS::EncodeError Resolv::DNS::Name Resolv::DNS::Query Resolv::DNS::Requester::RequestError Resolv::DNS::Resource Resolv::DNS::Resource::ANY Resolv::DNS::Resource::CNAME Resolv::DNS::Resource::DomainName Resolv::DNS::Resource::Generic Resolv::DNS::Resource::HINFO Resolv::DNS::Resource::IN Resolv::DNS::Resource::IN::A Resolv::DNS::Resource::IN::AAAA Resolv::DNS::Resource::IN::SRV Resolv::DNS::Resource::IN::WKS Resolv::DNS::Resource::LOC Resolv::DNS::Resource::MINFO Resolv::DNS::Resource::MX Resolv::DNS::Resource::NS Resolv::DNS::Resource::PTR Resolv::DNS::Resource::SOA Resolv::DNS::Resource::TXT Resolv::Hosts Resolv::IPv4 Resolv::IPv6 Resolv::LOC::Alt Resolv::LOC::Coord Resolv::LOC::Size Resolv::MDNS Resolv::ResolvError Resolv::ResolvTimeout
Ruby 2.4 
