bug: suspendable put-bytevector.

[8sync.git] / demos / websocket / 8s-server.scm

diff --git a/demos/websocket/8s-server.scm b/demos/websocket/8s-server.scm
new file mode 100755 (executable)
index 0000000..f271827
--- /dev/null
+++ b/demos/websocket/8s-server.scm
@@ -0,0 +1,73 @@
+#! /usr/bin/env guile
+# -*-scheme-*-
+!#
+
+;;; 8sync --- Asynchronous programming for Guile
+;;; Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;;
+;;; This file is part of 8sync.
+;;;
+;;; 8sync is free software: you can redistribute it and/or modify it
+;;; under the terms of the GNU Lesser General Public License as
+;;; published by the Free Software Foundation, either version 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; 8sync 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 Lesser General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Lesser General Public
+;;; License along with 8sync.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (8s-server)
+  #:use-module (oop goops)
+  #:use-module (8sync)
+  #:use-module (8sync systems web)
+  #:use-module (8sync systems websocket client)
+  #:use-module (8sync systems websocket server)
+  #:export (main))
+
+(define %server-port 1236)
+
+(define-actor <sleeper> (<actor>)
+  ((*init* sleeper-loop))
+  (sleep-secs #:init-value 3 #:getter sleeper-sleep-secs))
+
+(define (sleeper-loop actor message)
+  (while (actor-alive? actor)
+    (display "Zzzzzzzz....\n")
+    ;; Sleep for a bit
+    (8sleep (sleeper-sleep-secs actor))))
+
+(define (main . args)
+  (let* ((hive (make-hive))
+         (sleeper (bootstrap-actor hive <sleeper>))
+         (suspendable-port-bug? #t) ;; server must send large message to browser
+         (server (bootstrap-actor
+                  hive <websocket-server>
+                  #:port %server-port
+                  #:on-ws-client-connect (lambda args
+                                           (format (current-error-port) "on-ws-client-connection: ~s\n" args))
+                  #:on-ws-client-disconnect (lambda args
+                                              (format (current-error-port) "on-ws-client-disconnect: ~s\n" args))
+                  #:on-ws-message (lambda (ws id msg)
+                                    (format (current-error-port) "on-message: ~s: ~s\n" 'ws
+                                            (if (< (string-length msg) 80) msg
+                                                (string-append (substring msg 0 77) "...")))
+                                    (<- (actor-id ws) 'ws-send id msg)
+                                    (when suspendable-port-bug?
+                                      (<- (actor-id ws) 'ws-send id (string-append "Say: " (make-string (expt 2 16) #\A) "\n"))))
+                  #:on-ws-open (lambda (ws)
+                                 (format (current-error-port) "on-open: ~s\n" ws)))))
+    (format (current-error-port) "listening: ~s\n" %server-port)
+    (run-hive hive '())))
+
+;; HACK: Do not suspend writes to avoid
+;; `The connection to ws://localhost:1236/ was interrupted while the page was loading.' (icecat)
+;; `could not decode a text frame as utf-8' (ungoogled chromium)
+
+;; (define put-bytevector (@ (ice-9 binary-ports) put-bytevector))
+;; (module-define! (resolve-module '(8sync systems websocket frame)) 'put-bytevector put-bytevector)
+
+(main (command-line))