new

family should be an integer, a string or a symbol.

• Socket::AF_INET, “AF_INET”, “INET”, :AF_INET, :INET

• Socket::AF_UNIX, “AF_UNIX”, “UNIX”, :AF_UNIX, :UNIX

• etc.

cmsg_level should be an integer, a string or a symbol.

• Socket::SOL_SOCKET, “SOL_SOCKET”, “SOCKET”, :SOL_SOCKET and :SOCKET

• Socket::IPPROTO_IP, “IP” and :IP

• Socket::IPPROTO_IPV6, “IPV6” and :IPV6

• Socket::IPPROTO_TCP, “TCP” and :TCP

• etc.

cmsg_type should be an integer, a string or a symbol. If a string/symbol is specified, it is interpreted depend on cmsg_level.

• Socket::SCM_RIGHTS, “SCM_RIGHTS”, “RIGHTS”, :SCM_RIGHTS, :RIGHTS for SOL_SOCKET

• Socket::IP_RECVTTL, “RECVTTL” and :RECVTTL for IPPROTO_IP

• Socket::IPV6_PKTINFO, “PKTINFO” and :PKTINFO for IPPROTO_IPV6

• etc.

cmsg_data should be a string.

p Socket::AncillaryData.new(:INET, :TCP, :NODELAY, "")
#=> #<Socket::AncillaryData: INET TCP NODELAY "">

p Socket::AncillaryData.new(:INET6, :IPV6, :PKTINFO, "")
#=> #<Socket::AncillaryData: INET6 IPV6 PKTINFO "">