233 lines
7.4 KiB
OCaml
233 lines
7.4 KiB
OCaml
(**************************************************************************)
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(* *)
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(* Copyright (c) 2014 - 2016. *)
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(* Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
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(* *)
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(* All rights reserved. No warranty, explicit or implicit, provided. *)
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(* *)
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(**************************************************************************)
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open Error_monad
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open P2p_types
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include Logging.Make (struct let name = "test-p2p-io-scheduler" end)
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exception Error of error list
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let rec listen ?port addr =
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let tentative_port =
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match port with
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| None -> 1024 + Random.int 8192
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| Some port -> port in
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let uaddr = Ipaddr_unix.V6.to_inet_addr addr in
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let main_socket = Lwt_unix.(socket PF_INET6 SOCK_STREAM 0) in
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Lwt_unix.(setsockopt main_socket SO_REUSEADDR true) ;
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Lwt.catch begin fun () ->
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Lwt_unix.Versioned.bind_2 main_socket
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(ADDR_INET (uaddr, tentative_port)) >>= fun () ->
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Lwt_unix.listen main_socket 50 ;
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Lwt.return (main_socket, tentative_port)
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end begin function
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| Unix.Unix_error
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((Unix.EADDRINUSE | Unix.EADDRNOTAVAIL), _, _) when port = None ->
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listen addr
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| exn -> Lwt.fail exn
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end
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let accept main_socket =
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Lwt_unix.accept main_socket >>= fun (fd, sockaddr) ->
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return fd
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let rec accept_n main_socket n =
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if n <= 0 then
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return []
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else
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accept_n main_socket (n-1) >>=? fun acc ->
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accept main_socket >>=? fun conn ->
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return (conn :: acc)
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let connect addr port =
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let fd = Lwt_unix.socket PF_INET6 SOCK_STREAM 0 in
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let uaddr =
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Lwt_unix.ADDR_INET (Ipaddr_unix.V6.to_inet_addr addr, port) in
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Lwt_unix.connect fd uaddr >>= fun () ->
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return fd
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let simple_msgs =
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[|
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MBytes.create (1 lsl 6) ;
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MBytes.create (1 lsl 7) ;
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MBytes.create (1 lsl 8) ;
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MBytes.create (1 lsl 9) ;
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MBytes.create (1 lsl 10) ;
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MBytes.create (1 lsl 11) ;
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MBytes.create (1 lsl 12) ;
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MBytes.create (1 lsl 13) ;
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MBytes.create (1 lsl 14) ;
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MBytes.create (1 lsl 15) ;
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MBytes.create (1 lsl 16) ;
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|]
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let nb_simple_msgs = Array.length simple_msgs
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let receive conn =
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let buf = MBytes.create (1 lsl 16) in
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let rec loop () =
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P2p_io_scheduler.read conn buf >>= function
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| Ok _ -> loop ()
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| Error [P2p_io_scheduler.Connection_closed] ->
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Lwt.return ()
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| Error err -> Lwt.fail (Error err)
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in
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loop ()
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let server
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?(display_client_stat = true)
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?max_download_speed ?read_queue_size ~read_buffer_size
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main_socket n =
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let sched =
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P2p_io_scheduler.create
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?max_download_speed
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?read_queue_size
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~read_buffer_size
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() in
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Moving_average.on_update begin fun () ->
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log_notice "Stat: %a" Stat.pp (P2p_io_scheduler.global_stat sched) ;
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if display_client_stat then
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P2p_io_scheduler.iter_connection sched
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(fun id conn ->
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log_notice " client(%d) %a" id Stat.pp (P2p_io_scheduler.stat conn)) ;
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end ;
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(* Accept and read message until the connection is closed. *)
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accept_n main_socket n >>=? fun conns ->
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let conns = List.map (P2p_io_scheduler.register sched) conns in
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Lwt.join (List.map receive conns) >>= fun () ->
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iter_p P2p_io_scheduler.close conns >>=? fun () ->
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log_notice "OK %a" Stat.pp (P2p_io_scheduler.global_stat sched) ;
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return ()
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let max_size ?max_upload_speed () =
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match max_upload_speed with
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| None -> nb_simple_msgs
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| Some max_upload_speed ->
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let rec loop n =
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if n <= 1 then 1
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else if MBytes.length simple_msgs.(n-1) <= max_upload_speed then n
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else loop (n - 1)
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in
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loop nb_simple_msgs
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let rec send conn nb_simple_msgs =
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Lwt_main.yield () >>= fun () ->
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let msg = simple_msgs.(Random.int nb_simple_msgs) in
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P2p_io_scheduler.write conn msg >>=? fun () ->
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send conn nb_simple_msgs
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let client ?max_upload_speed ?write_queue_size addr port time n =
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let sched =
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P2p_io_scheduler.create
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?max_upload_speed ?write_queue_size ~read_buffer_size:(1 lsl 12) () in
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connect addr port >>=? fun conn ->
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let conn = P2p_io_scheduler.register sched conn in
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let nb_simple_msgs = max_size ?max_upload_speed () in
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Lwt.pick [ send conn nb_simple_msgs ;
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Lwt_unix.sleep time >>= return ] >>=? fun () ->
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P2p_io_scheduler.close conn >>=? fun () ->
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let stat = P2p_io_scheduler.stat conn in
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lwt_log_notice "Client OK %a" Stat.pp stat >>= fun () ->
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return ()
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let run
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?display_client_stat
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?max_download_speed ?max_upload_speed
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~read_buffer_size ?read_queue_size ?write_queue_size
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addr port time n =
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Logging.init Stderr >>= fun () ->
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listen ?port addr >>= fun (main_socket, port) ->
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let server =
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Process.detach ~prefix:"server " begin fun () ->
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Process.handle_error begin fun () ->
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server
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?display_client_stat ?max_download_speed
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~read_buffer_size ?read_queue_size
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main_socket n
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end
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end in
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let client n =
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let prefix = Printf.sprintf "client(%d) " n in
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Process.detach ~prefix begin fun () ->
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Lwt_utils.safe_close main_socket >>= fun () ->
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Process.handle_error begin fun () ->
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client ?max_upload_speed ?write_queue_size addr port time n
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end
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end in
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Process.wait (server :: List.map client Utils.(1 -- n))
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let () = Random.self_init ()
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let addr = ref Ipaddr.V6.localhost
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let port = ref None
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let max_download_speed = ref None
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let max_upload_speed = ref None
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let read_buffer_size = ref (1 lsl 14)
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let read_queue_size = ref (Some 1)
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let write_queue_size = ref (Some 1)
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let delay = ref 60.
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let clients = ref 8
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let display_client_stat = ref None
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let spec =
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Arg.[
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"--port", Int (fun p -> port := Some p), " Listening port";
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"--addr", String (fun p -> addr := Ipaddr.V6.of_string_exn p),
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" Listening addr";
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"--max-download-speed", Int (fun i -> max_download_speed := Some i),
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" Max download speed in B/s (default: unbounded)";
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"--max-upload-speed", Int (fun i -> max_upload_speed := Some i),
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" Max upload speed in B/s (default: unbounded)";
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"--read-buffer-size", Set_int read_buffer_size,
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" Size of the read buffers";
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"--read-queue-size", Int (fun i ->
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read_queue_size := if i <= 0 then None else Some i),
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" Size of the read queue (0=unbounded)";
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"--write-queue-size", Int (fun i ->
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write_queue_size := if i <= 0 then None else Some i),
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" Size of the write queue (0=unbounded)";
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"--delay", Set_float delay, " Client execution time.";
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"--clients", Set_int clients, " Number of concurrent clients.";
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"--hide-clients-stat", Unit (fun () -> display_client_stat := Some false),
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" Hide the client bandwidth statistic." ;
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"--display_clients_stat", Unit (fun () -> display_client_stat := Some true),
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" Display the client bandwidth statistic." ;
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]
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let () =
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let anon_fun num_peers = raise (Arg.Bad "No anonymous argument.") in
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let usage_msg = "Usage: %s <num_peers>.\nArguments are:" in
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Arg.parse spec anon_fun usage_msg
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let () =
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Sys.catch_break true ;
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Lwt_main.run
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(run
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?display_client_stat:!display_client_stat
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?max_download_speed:!max_download_speed
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?max_upload_speed:!max_upload_speed
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~read_buffer_size:!read_buffer_size
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?read_queue_size:!read_queue_size
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?write_queue_size:!write_queue_size
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!addr !port !delay !clients)
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