class type resolver = object .. end
method host_by_name : string -> Unixqueue.event_system -> Unix.host_entry engine
Look up the passed host name up. The implementation can be synchronous
or asynchronous. In the first case, an engine is returned that is
already in one of the states `Done he or `Error e where he is
the host entry, or e is an exception like Host_not_found. In this
case the passed event system is ignored. If the implementation is
asynchronous, the caller must run the event system until the
state of the engine transitions to `Done he or `Error e.
