1 (use-modules (8sync systems actors)
8 (define %default-server #f)
9 (define %default-port 8889)
11 (define-class <network-manager> (<actor>)
12 (server-socket #:accessor nm-server-socket)
13 (clients #:accessor nm-clients
14 #:init-thunk make-hash-table)
18 ((start-listening actor message)
19 (nm-install-socket actor (message-ref message 'server %default-server)
20 (message-ref message 'port %default-port))))))
22 (define-method (nm-close-everything (nm <network-manager>) remove-from-agenda)
27 (if remove-from-agenda
28 (8sync-port-remove client)))
31 (close (nm-server-socket nm))
32 (if remove-from-agenda
33 (8sync-port-remove (nm-server-socket nm))))
35 ;; Maximum number of backlogged connections when we listen
36 (define %maximum-backlog-conns 128) ; same as SOMAXCONN on Linux 2.X,
39 (define-method (nm-install-socket (nm <network-manager>) server port)
40 "Install socket on SERVER with PORT"
41 (let ((s (socket PF_INET ; ipv4
42 SOCK_STREAM ; two-way connection-based byte stream
45 (inet-pton AF_INET server)
47 ;; Totally mimed from the Guile manual. Not sure if we need this, but:
48 ;; http://www.unixguide.net/network/socketfaq/4.5.shtml
49 (setsockopt s SOL_SOCKET SO_REUSEADDR 1) ; reuse port even if port is busy
50 ;; Connecting to a non-specific address:
51 ;; (bind s AF_INET INADDR_ANY port)
52 ;; Should this be an option? Guess I don't know why we'd need it
53 ;; @@: If we wanted to support listening on a particular hostname,
54 ;; could see 8sync's irc.scm...
55 (bind s AF_INET addr port)
56 ;; Listen to connections
57 (listen s %maximum-backlog-conns)
59 ;; Throw a system-error rather than block on an (accept)
60 ;; that has nothing to do
65 ;; @@: This is used in Guile's http server under the commit:
66 ;; * module/web/server/http.scm (http-open): Ignore SIGPIPE. Keeps the
67 ;; server from dying in some circumstances.
68 ;; (sigaction SIGPIPE SIG_IGN)
69 ;; Will this break other things that use pipes for us though?
71 (set! (nm-server-socket nm) s)
73 (format #t "Listening for clients in pid: ~s\n" (getpid))
74 (8sync-port s #:read (lambda (s) (nm-new-client nm s)))
75 ;; TODO: set up periodic close of idle connections
78 (define-method (nm-new-client (nm <network-manager>) s)
79 (let* ((client-connection (accept s))
80 (client-details (cdr client-connection))
81 (client (car client-connection)))
82 (format #t "New client: ~s\n" client-details)
83 (format #t "Client address: ~s\n"
85 (sockaddr:addr client-details)))
87 (hash-set! (nm-clients nm) client #f)
88 (8sync-port client #:read (nm-make-client-receive nm))))
90 (define-method (nm-make-client-receive (nm <network-manager>))
92 (define (reset-buffer)
94 (define (should-read-char client)
95 (and (not (port-closed? client))
97 (not (eof-object? (peek-char client)))))
98 (define (receive-handler client)
99 (display "Horray, we got something!\n")
100 (while (should-read-char client)
101 (set! buffer (cons (read-char client) buffer))
103 (;; @@: Do we need the "char?"
104 (#\newline #\newline (? char? line-chars) ...)
105 (let ((ready-line (list->string (reverse line-chars))))
109 (nm-handle-line nm client ready-line)))
111 ;; Shut things down on closed port or EOF object
113 ((port-closed? client)
114 ;; TODO: replace with nm-handle-port-closed
115 (display "port closed time\n")
116 (8sync-port-remove client))
117 ((and (char-ready? client)
118 (eof-object? (peek-char client)))
119 (display "port eof time\n")
120 ;; TODO: replace with nm-handle-port-eof
122 (8sync-port-remove client))))
125 (define-method (nm-handle-line (nm <network-manager>) client line)
126 "Handle an incoming line of input from a client"
127 (format #t "Got line: ~s\n" line))
130 ;; (define-method (nm-close-port (nm <network-manager>)))
133 (define-generic gm-init-world)
134 (define-class <game-master> (<actor>)
137 (make-action-dispatch