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