val connect_tcp : Ipaddr.t -> int -> Unix.file_descr
val send_tcp : Unix.file_descr -> string -> unit
val recv_tcp : Unix.file_descr -> string
val setup_log : unit Cmdliner.Term.t
val ip_c : Ipaddr.t Cmdliner.Arg.conv
val namekey_c :
([ `raw ] Domain_name.t * [ `host ] Domain_name.t * Dns.Dnskey.t)
Cmdliner.Arg.conv
val name_c : [ `host ] Domain_name.t Cmdliner.Arg.conv
val domain_name_c : [ `raw ] Domain_name.t Cmdliner.Arg.conv