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(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
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(** Welcome worker.

    Accept incoming connections and add them to the pool.
*)

(** Type of a welcome worker. *)
type t

(** [create ?reuse_port ?addr ~backlog pool port] returns a running welcome worker
    adding connections into [pool] listening on [addr:port]. [backlog]
    is passed to [Lwt_unix.listen].

    [reuse_port] should be used for testing purposes. This option
    sets [SO_REUSEPORT] on the socket, allowing to reuse a port opened 
    elsewhere. *)
val create :
  ?reuse_port:bool ->
  ?addr:P2p_addr.t ->
  backlog:int ->
  ('msg, 'meta, 'meta_conn) P2p_connect_handler.t ->
  P2p_addr.port ->
  t tzresult Lwt.t

(** [activate t] start the worker that will accept connections *)
val activate : t -> unit

(** [shutdown t] returns when [t] has completed shutdown. *)
val shutdown : t -> unit Lwt.t