class lingering_close :?preclose:unit -> unit -> Unix.file_descr ->object..end
preclose function is called just before Unix.close.Usage:
while lc # lingering do lc # cycle ~block:true () done
method cycle : ?block:bool -> unit -> unitblock is set, the method
blocks until data is available. (Default: false)method lingering : boolmethod fd : Unix.file_descr