RFC 4035 section-5.3.4: "If the number of labels in an RRset's owner name is greater than the Labels field of the covering RRSIG RR, then the RR

< use this to parse from argc and argv

Sets the socket to listen with a default listen backlog of 10 pending connections

Lowercase a string

"Normalize" record content for API consumers. */

lovingly copied from http://stackoverflow.com/questions/1798511/how-to-avoid-press-enter-with-any-getchar

<! Feed data to the parser

return a socket to the pool, or simply erase it