(session
:accessor session
:initarg :session
- :documentation "web session to which this connection belongs")))
+ :documentation "web session to which this connection belongs")
+ (send-queue
+ :accessor send-queue
+ :initform (locked-queue:create)
+ :documentation "lines outstanding to be sent at next prompt")))
(defun make-connection (&key (user nil)
(password nil)
(handler (spawn-with-name (format nil "empire-handler-~a" user)
#'handle-connection connection)))
(setf (connection-handler connection) handler)
- (empire-log:info "empire:connect: ~a" connection)
+ (empire-log:info "~a: connect" connection)
connection))
(defgeneric quit (connection))
(defgeneric handle-connection (connection))
(defgeneric read-message (connection))
-(defgeneric send-message (connection message))
+(defgeneric send-message (connection message &key next-mode))
+(defgeneric connected-p (connection))
(defgeneric reconnect (conncetion))
+(defmethod connected-p ((c connection))
+ (sb-thread:thread-alive-p (connection-handler c)))
+
(defmethod reconnect ((c connection))
(with-slots (server-name server-port user password socket stream connection-handler) c
(let* ((sock (usocket:socket-connect server-name server-port))
- (s (usocket:socket-stream sock))
- (handler (spawn-with-name (format nil "empire-handler-~a" user)
- #'handle-connection c)))
+ (s (usocket:socket-stream sock)))
(setf socket sock
stream s
- connection-handler handler)))
- (empire-log:info "empire:reconnect: ~a" c))
+ connection-handler (spawn-with-name (format nil "empire-handler-~a" user)
+ #'handle-connection c))))
+ (empire-log:info "~a: reconnect" c))
(defparameter +C_CMDOK+ "0")
(defparameter +C_DATA+ "1")
(defmethod set-new-mode ((m base-mode) new-mode)
(let* ((c (connection m))
(mode (make-mode c new-mode)))
+ (empire-log:info "~a: set-new-mode ~a -> ~a" c (connection-mode c) new-mode)
(setf (connection-mode c) mode)))
(defgeneric handle-data (base-mode message))
(defgeneric handle-prompt (base-mode message))
(defgeneric handle-flush (base-mode message))
(defgeneric handle-simple-message (base-mode message))
+(defgeneric handle-ignore (base-mode message))
(defmethod handle-init ((m init-mode) message)
(declare (ignorable message))
(with-slots (play-sent-p) m
(if (not play-sent-p)
- (progn
- (play (connection m))
+ (let ((c (connection m)))
+ (login-and-play c)
(setf play-sent-p t))
(set-new-mode m 'play-mode))))
(defmethod handle-exit ((m init-mode) message)
(declare (ignorable message))
- (quit (connection m)))
+ t)
(defmethod handle-exit ((m play-mode) message)
(declare (ignorable message))
(defmethod handle-flush ((m play-mode) message)
(let* ((c (connection m)))
- (empire-web:prompt (session c) message)))
+ (empire-web:prompt (session c) message)
+ (send-next-line c)))
+
+(defmethod send-next-line ((c connection))
+ (let ((next-event (locked-queue:dequeue (send-queue c))))
+ (typecase next-event
+ (string (send-message-one c next-event))
+ (cons (let ((message (car next-event))
+ (mode (cdr next-event)))
+ (send-message-one c message)
+ (set-new-mode c mode))))))
(defmethod handle-prompt ((m play-mode) message)
(let* ((c (connection m)))
(let* ((minutes (read s)) ;;FIXME DANGEROUS
(btus (read s)))
(empire-web:prompt (session c)
- (format nil "[~a,~a]: " minutes btus))))))
+ (format nil "[~a,~a]: " minutes btus))))
+ (send-next-line c)))
+
+(defmethod handle-ignore ((m init-mode) message)
+ (declare (ignorable message))
+ t)
(defparameter *line-type-dispatch*
(list `(,+C_DATA+ . handle-data)
`(,+C_FLUSH+ . handle-flush)
`(,+C_BADCMD+ . handle-simple-message)
`(,+C_FLASH+ . handle-simple-message)
+ `(,+C_CMDOK+ . handle-ignore)
`(,+C_PROMPT+ . handle-prompt)))
(defun parse-server-line (line)
(handler-case
(let* ((s (network-stream c))
(line (read-line s)))
- (empire-log:info "< ~a~%" line)
+ (empire-log:info "~a: < ~a" c line)
(multiple-value-bind (message type) (parse-server-line line)
(let ((handler (lookup-handler type))
(mode (connection-mode c)))
(write-sequence message s)
(terpri s)
(force-output s))
-
-(defmethod send-message ((c connection) message)
+
+(defgeneric send-message-one (connection string))
+(defmethod send-message-one ((c connection) message)
+ (empire-log:info "~a: > ~a" c message)
(let ((s (network-stream c)))
- (empire-log:info "> ~a~%" message)
- (let ((sent-p nil)
- (tries 3))
- (loop
- while (and (not sent-p)
- (> tries 0))
- do (handler-case
- (progn
- (raw-send-message s message)
- (setf sent-p t))
- (sb-int:closed-stream-error ()
- (progn
- (decf tries)
- (empire-log:info "Connection close - retrying (~a tries left)" tries)
- (reconnect c))))))
- message))
-
-(defgeneric play (connection))
-(defmethod play ((c connection))
+ (raw-send-message s message)))
+
+(defmethod send-message ((c connection) message &key next-mode)
+ (if (not (connected-p c))
+ (reconnect c))
+ (if next-mode
+ (locked-queue:enqueue (send-queue c) (cons message next-mode))
+ (locked-queue:enqueue (send-queue c) message)))
+
+(defparameter +special-command-char+ #\;)
+
+(defun special-command-p (line)
+ (and (> (length line) 0)
+ (char= +special-command-char+ (aref line 0))))
+
+(defmethod special-xup ((c connection))
+ t)
+
+(defmethod special-command ((c connection) line)
+ (cond ((string= line "xup") (special-xup c))
+ (t (empire-web:data (session c) "Unknown special command")))
+ line)
+
+(defmethod command ((c connection) line)
+ (cond ((special-command-p line) (special-command c (subseq line 1)))
+ (t (send-message c line))))
+
+(defgeneric login-and-play (connection))
+(defmethod login-and-play ((c connection))
+ (send-message-one c (format nil "client eow ~a" *version*))
+ (send-message-one c "user FIXME")
(with-slots (user password) c
- (send-message c (format nil "play FIXME ~a ~a" user password))))
+ (send-message-one c (format nil "coun ~a" user))
+ (send-message-one c (format nil "pass ~a" password)))
+ (send-message-one c "kill")
+ (send-message-one c "play"))
(defmethod quit ((c connection))
(usocket:socket-close (socket c)))
projects / eow / blobdiff