package async_smtp
SMTP client and server
Install
Dune Dependency
Authors
Maintainers
Sources
async_smtp-v0.15.0.tar.gz
sha256=41e265c2d1cd7cde23235d4bb3692226be7d159e4c82e976e68e838b910865d6
doc/src/async_smtp.tools/stress_test.ml.html
Source file stress_test.ml
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open Core open Async open Async_smtp let log = Lazy.force Async.Log.Global.log |> Smtp_mail_log.adjust_log_levels ~remap_info_to:`Debug ;; module Config = struct type t = { dir : string ; host : string ; port : int ; tls : bool ; send_n_messages : int ; client_allowed_ciphers : [ `Secure | `Openssl_default | `Only of string list ] ; server_allowed_ciphers : [ `Secure | `Openssl_default | `Only of string list ] ; key_type : [ `rsa of int | `ecdsa of string | `dsa of int ] } [@@deriving fields, sexp] let make_tls_certificates t = let openssl args = Async_shell.run "openssl" args in let%bind () = openssl [ "req" ; "-new" ; "-x509" (* generate the request and sign in one step *) ; "-newkey" ; "rsa:512" (* generate key *) ; "-nodes" (* don't encrypt the key *) ; "-batch" (* non interactive *) ; "-keyout" ; t.dir ^/ "ca.key" ; "-out" ; t.dir ^/ "ca.crt" ; "-days" ; "1" (* short shelf life is good for testing *) ; "-subj" ; "/CN=stress-test-CA/" ] in let%bind () = match t.key_type with | `rsa bits -> openssl [ "genrsa"; "-out"; t.dir ^/ "server.key"; Int.to_string bits ] | `dsa bits -> openssl [ "dsaparam"; "-genkey"; "-out"; t.dir ^/ "server.key"; Int.to_string bits ] | `ecdsa curve -> openssl [ "ecparam"; "-name"; curve; "-genkey"; "-out"; t.dir ^/ "server.key" ] in let%bind () = openssl [ "req" ; "-new" ; "-key" ; t.dir ^/ "server.key" ; "-nodes" (* don't encrypt the key *) ; "-batch" (* non interactive *) ; "-out" ; t.dir ^/ "server.csr" ; "-subj" ; sprintf "/CN=%s/" t.host ] in let%map () = openssl [ "x509" ; "-req" ; "-days" ; "1" (* short shelf life is good for testing *) ; "-CA" ; t.dir ^/ "ca.crt" ; "-CAkey" ; t.dir ^/ "ca.key" ; "-in" ; t.dir ^/ "server.csr" ; "-out" ; t.dir ^/ "server.crt" ; "-set_serial" ; "1" ] in let server = { Smtp_server.Config.Tls_options.version = None ; options = None ; name = None ; crt_file = t.dir ^/ "server.crt" ; key_file = t.dir ^/ "server.key" ; ca_file = Some (t.dir ^/ "ca.crt") ; ca_path = None ; allowed_ciphers = t.server_allowed_ciphers } in let client = [ ( Smtp_client.Config.Domain_suffix.of_string t.host , { Smtp_client.Config.Tls.version = None ; options = None ; name = None ; ca_file = Some (t.dir ^/ "ca.crt") ; ca_path = None ; mode = `Required ; certificate_mode = `Verify ; allowed_ciphers = t.client_allowed_ciphers } ) ; ( Smtp_client.Config.Domain_suffix.of_string "" , { Smtp_client.Config.Tls.version = None ; options = None ; name = None ; ca_file = None ; ca_path = None ; mode = `Required ; certificate_mode = `Verify (* Causes the message to fail if we have to wrong host *) ; allowed_ciphers = t.client_allowed_ciphers } ) ] in server, client ;; let server_and_client_config ~concurrent_receivers t = let%bind tls_options = if t.tls then ( let%map tls_options = make_tls_certificates t in Some tls_options) else return None in let spool_dir = t.dir ^/ "spool-not-used" in let%map () = Deferred.all_unit [ Unix.mkdir ~p:() spool_dir ] in let client = { Smtp_client.Config.greeting = Some "stress-test" ; tls = Option.value_map ~f:snd tls_options ~default:[] ; send_receive_timeout = `This (Time.Span.of_sec 2.) ; final_ok_timeout = `This (Time.Span.of_sec 5.) } in let server = { Smtp_server.Config.where_to_listen = [ Localhost_on_port t.port ] ; max_concurrent_receive_jobs_per_port = concurrent_receivers ; timeouts = Smtp_server.Config.Timeouts.default ; rpc_port = 0 (* not used *) ; malformed_emails = `Reject ; max_message_size = Byte_units.of_megabytes 1. ; tls_options = Option.map ~f:fst tls_options ; tcp_options = None } in server, client ;; end let counter = ref 0 let finished = Ivar.create () let throttle = ref (Throttle.create ~continue_on_error:true ~max_concurrent_jobs:1) let send ~config ~client_config envelope = incr counter; let port = Config.port config in let host = Config.host config in don't_wait_for (Throttle.enqueue !throttle (fun () -> Deferred.Or_error.try_with_join ~run: `Schedule ~rest:`Log (fun () -> Smtp_client.Tcp.with_ ~log:(Lazy.force Log.Global.log) (Host_and_port.create ~host ~port) ~config:client_config ~f:(fun client -> Smtp_client.send_envelope client ~log envelope >>|? Smtp_client.Envelope_status.ok_or_error ~allow_rejected_recipients:false >>| Or_error.join >>|? ignore))) >>| Result.iter_error ~f:(Log.Global.error !"buh???: %{Error#hum}")) ;; let main ~dir ~host ~port ~tls ~send_n_messages ~num_copies ~concurrent_senders ~concurrent_receivers ~message_from_stdin ~client_allowed_ciphers ~server_allowed_ciphers ~key_type () = let config = { Config.dir ; host ; port ; tls ; send_n_messages ; client_allowed_ciphers ; server_allowed_ciphers ; key_type } in let%bind envelopes = if message_from_stdin then ( let stdin = Lazy.force Reader.stdin in Smtp_server.read_bsmtp stdin |> Pipe.map ~f:Or_error.ok_exn |> Pipe.to_list) else ( let recipients = [ Email_address.of_string_exn "test@example.com" ] in let email = Email.Simple.create ~from:(Email_address.local_address ()) ~subject:"Stress test" ~to_:recipients (Email.Simple.Content.text_utf8 "Stress Test") in let sender = `Null in return [ Smtp_envelope.create ~sender ~recipients ~email () ]) in let envelopes = List.init num_copies ~f:(fun _ -> envelopes) |> List.concat in throttle := Throttle.create ~continue_on_error:true ~max_concurrent_jobs:concurrent_senders; let%bind server_config, client_config = Config.server_and_client_config ~concurrent_receivers config in let module Server = Smtp_server.Make (struct open Smtp_monad.Let_syntax module State = Smtp_server.Plugin.Simple.State module Session = struct include Smtp_server.Plugin.Simple.Session let extensions ~state:_ _ = [ Smtp_server.Plugin.Extension.Start_tls (module struct type session = t let upgrade_to_tls ~log:_ t = return { t with tls = true } end : Smtp_server.Plugin.Start_tls with type session = t) ] ;; end module Envelope = struct include Smtp_server.Plugin.Simple.Envelope let process ~state:_ ~log:_ ~flows:_ _session t email = let envelope = smtp_envelope t email in if !counter >= Config.send_n_messages config then Ivar.fill_if_empty finished () else send ~config ~client_config envelope; return (sprintf "stress-test:%d" !counter) ;; end let rpcs () = [] end) in let%bind server = Server.start ~server_state:() ~log ~config:server_config >>| Or_error.ok_exn in List.iter envelopes ~f:(send ~config ~client_config); let%bind () = Ivar.read finished in (* Wait for all pending messages to clear *) let%bind () = Throttle.prior_jobs_done !throttle in let%bind () = Clock.after (sec 0.1) in match%bind Server.close server with | Error e -> Error.raise e | Ok () -> Deferred.return () ;; let cipher_list = Command.Arg_type.create (fun s -> `Only (String.split ~on:':' s)) let key_type = Command.Arg_type.create (fun s -> match String.split ~on:':' s with | [ "rsa"; bits ] -> `rsa (Int.of_string bits) | [ "dsa"; bits ] -> `dsa (Int.of_string bits) | [ "ecdsa"; curve ] -> `ecdsa curve | _ -> failwith "not a recognized key type. Supported rsa:BITS, dsa:BITS, ecdsa:CURVE") ;; let command = let open Command.Let_syntax in Command.async ~summary: "Stress-test an smtp server by repeatedly sending and receiving a message read \ from stdin" [%map_open let dir = flag "-dir" (optional string) ~doc:" Working dir" |> map ~f:(function | Some dir -> dir | None -> Core_unix.mkdtemp "/tmp/stress-test-") and host = flag "-host" (optional_with_default "localhost" string) ~doc:" Hostname to listen on" and port = flag "-port" (optional_with_default 2525 int) ~doc:" Port to listen on" and tls = flag "-tls" no_arg ~doc:" Run the stress test with TLS enabled" and send_n_messages = flag "-send-n-messages" ~aliases:[ "-n" ] (optional_with_default 1000 int) ~doc:" Number of messages to send" and num_copies = flag "-num-copies" (optional_with_default 1 int) ~doc:" Number of copies of each (the) message to have in circulation" and concurrent_senders = flag "-concurrent-senders" (optional_with_default 1 int) ~doc:" Number of concurrent senders" and concurrent_receivers = flag "-concurrent-receivers" (optional_with_default 1 int) ~doc:" Number of concurrent receivers" and message_from_stdin = flag "-message-from-stdin" no_arg ~doc:" Read the message from stdin, otherwise generate a simple message" and () = flag "-log-level" (optional Log.Level.arg) ~doc:" Log level" |> map ~f:(Option.iter ~f:Log.Global.set_level) and client_allowed_ciphers = flag "-client-allowed-ciphers" (optional_with_default `Secure cipher_list) ~doc:" Restrict client side SSL ciphers" and server_allowed_ciphers = flag "-server-allowed-ciphers" (optional_with_default `Secure cipher_list) ~doc:" Restrict server side SSL ciphers" and key_type = flag "-key-type" (optional_with_default (`rsa 2048) key_type) ~doc:" TLS Key type to use/generate" in fun () -> main ~dir ~host ~port ~tls ~send_n_messages ~num_copies ~concurrent_senders ~concurrent_receivers ~message_from_stdin ~client_allowed_ciphers ~server_allowed_ciphers ~key_type ()] ;;
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