Tootsville::Host-Name-Like-P

Function

Host-Name-Like-P names a function, with lambda list (NAME):

Does NAME meet the general rules of being a DNS host name.

Note that this does NOT recognize etiher dotted-quad IPv4 nor hex IPv6 addresses, only DNS names.

RFC-1035:

• Each label is up to 63 character-bytes.

• The total name length is up to 255 character-bytes, excluding dots.

• Labels must begin with a basic ASCII letter A-Z

• Labels must end with a letter or digit 0-9

• Labels may contain ASCII Hyphen-Minus, but only internally and never twice in a row.

• At present, all Top-Level Domains are at least two alphabetic characters and contain no digits nor hyphens.

• This function requires at least one dot; i.e. it is not for TLDs

• The trailing dot for the root should be omitted for this function.

File

Defined in file src/types/uri-types.lisp.