66 lines
2.5 KiB
OCaml
66 lines
2.5 KiB
OCaml
(* Copyright 2012 Tony Garnock-Jones <tonygarnockjones@gmail.com>. *)
|
|
|
|
(* This file is part of Hop. *)
|
|
|
|
(* Hop is free software: you can redistribute it and/or modify it *)
|
|
(* under the terms of the GNU General Public License as published by the *)
|
|
(* Free Software Foundation, either version 3 of the License, or (at your *)
|
|
(* option) any later version. *)
|
|
|
|
(* Hop is distributed in the hope that it will be useful, but *)
|
|
(* WITHOUT ANY WARRANTY; without even the implied warranty of *)
|
|
(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *)
|
|
(* General Public License for more details. *)
|
|
|
|
(* You should have received a copy of the GNU General Public License *)
|
|
(* along with Hop. If not, see <http://www.gnu.org/licenses/>. *)
|
|
|
|
open Lwt
|
|
open Unix
|
|
open Printf
|
|
open Sexp
|
|
|
|
let connection_count = ref 0
|
|
|
|
let endpoint_name n =
|
|
match n with
|
|
| ADDR_INET (host, port) -> sprintf "%s:%d" (string_of_inet_addr host) port
|
|
| _ -> "??unknown??"
|
|
|
|
let connection_main class_name peername cin cout issue_banner boot_fn node_fn mainloop =
|
|
ignore (Log.info ("Accepted "^class_name) [str (endpoint_name peername)]);
|
|
match_lwt issue_banner cin cout with
|
|
| true ->
|
|
lwt shared_state = boot_fn (peername, cin, cout) in
|
|
let n = Node.make (Bytes.of_string class_name) (node_fn shared_state) in
|
|
lwt () =
|
|
(try_lwt
|
|
mainloop shared_state n
|
|
with
|
|
| End_of_file ->
|
|
Log.info ("Disconnecting "^class_name^" normally") [str (endpoint_name peername)]
|
|
| Sys_error message ->
|
|
Log.warn ("Disconnected "^class_name^" by Sys_error") [str (endpoint_name peername); str message]
|
|
| exn ->
|
|
Log.error ("Uncaught exception in "^class_name) [str (Printexc.to_string exn)])
|
|
in
|
|
Node.unbind_all n
|
|
| false ->
|
|
Log.error ("Disconnected "^class_name^" by failed initial handshake") []
|
|
|
|
let start_connection' class_name issue_banner boot_fn node_fn mainloop (s, peername) =
|
|
let cin = Lwt_io.of_fd Lwt_io.input s in
|
|
let cout = Lwt_io.of_fd Lwt_io.output s in
|
|
connection_count := !connection_count + 1;
|
|
lwt () = connection_main class_name peername cin cout issue_banner boot_fn node_fn mainloop in
|
|
connection_count := !connection_count - 1;
|
|
lwt () = (try_lwt Lwt_io.flush cout with _ -> return ()) in
|
|
Lwt_unix.close s
|
|
|
|
let start_connection class_name issue_banner boot_fn node_fn mainloop (s, peername) =
|
|
Util.create_thread
|
|
(Bytes.of_string (endpoint_name peername ^ " input"))
|
|
None
|
|
(start_connection' class_name issue_banner boot_fn node_fn mainloop)
|
|
(s, peername)
|