(eval-when (:load-toplevel :compile-toplevel :execute)
+
+;;; Winsock is different w.r.t errno
+(defun socket-errno ()
+ "Get socket error code, usually from errno, but see #+win32."
+ #+win32 (sockint::wsa-get-last-error)
+ #-win32 (sb-unix::get-errno))
+
(defclass socket ()
((file-descriptor :initarg :descriptor
:reader socket-file-descriptor)
(type :initarg :type
:reader socket-type
:documentation "Type of the socket: :STREAM or :DATAGRAM.")
+ #+win32
+ (non-blocking-p :type (member t nil) :initform nil)
(stream))
(:documentation "Common base class of all sockets, not meant to be
directly instantiated.")))
(setf (slot-value socket 'file-descriptor) fd
(slot-value socket 'protocol) proto-num
(slot-value socket 'type) type)
- (sb-ext:finalize socket (lambda () (sockint::close fd)))))
+ (sb-ext:finalize socket (lambda () (sockint::close fd))
+ :dont-save t)))
\f
(size-of-sockaddr socket))))
(cond
((and (= fd -1)
- (member (sb-unix::get-errno)
+ (member (socket-errno)
(list sockint::EAGAIN sockint::EINTR)))
nil)
((= fd -1) (socket-error "accept"))
:type (socket-type socket)
:protocol (socket-protocol socket)
:descriptor fd)))
- (sb-ext:finalize s (lambda () (sockint::close fd))))
+ (sb-ext:finalize s (lambda () (sockint::close fd))
+ :dont-save t))
(multiple-value-list (bits-of-sockaddr socket sockaddr))))))))
(defgeneric socket-connect (socket &rest address)
(sb-alien:addr sa-len))))
(cond
((and (= len -1)
- (member (sb-unix::get-errno)
+ (member (socket-errno)
(list sockint::EAGAIN sockint::EINTR)))
nil)
((= len -1) (socket-error "recvfrom"))
- (t (loop for i from 0 below len
+ (t (loop for i from 0 below (min len length)
do (setf (elt buffer i)
(cond
((or (eql element-type 'character) (eql element-type 'base-char))
flags)))))
(cond
((and (= len -1)
- (member (sb-unix::get-errno)
+ (member (socket-errno)
(list sockint::EAGAIN sockint::EINTR)))
nil)
((= len -1)
(declare (ignore r))
(drop-it))))))))
+(defgeneric socket-shutdown (socket &key direction)
+ (:documentation
+ "Indicate that no communication in DIRECTION will be performed on SOCKET.
+
+DIRECTION has to be one of :INPUT, :OUTPUT or :IO.
+
+After a shutdown, no input and/or output of the indicated DIRECTION
+can be performed on SOCKET."))
+
+(defmethod socket-shutdown ((socket socket) &key direction)
+ (let* ((fd (socket-file-descriptor socket))
+ (how (ecase direction
+ (:input sockint::SHUT_RD)
+ (:output sockint::SHUT_WR)
+ (:io sockint::SHUT_RDWR))))
+ (when (minusp (sockint::shutdown fd how))
+ (socket-error "shutdown"))))
+
(defgeneric socket-make-stream (socket &key input output
element-type external-format
buffering
(buffering :full)
(external-format :default)
timeout
- auto-close)
- "Default method for SOCKET objects. An ELEMENT-TYPE of :DEFAULT will
-construct a bivalent stream. Acceptable values for BUFFERING are :FULL, :LINE
-and :NONE. Streams will have no TIMEOUT by default. If AUTO-CLOSE is true, the
-underlying OS socket is automatically closed after the stream and the socket
-have been garbage collected.
-
-The stream for SOCKET will be cached, and a second invocation of this method
-will return the same stream. This may lead to oddities if this function is
-invoked with inconsistent arguments \(e.g., one might request an input stream
-and get an output stream in response\)."
+ auto-close
+ serve-events)
+ "Default method for SOCKET objects.
+
+ELEMENT-TYPE defaults to CHARACTER, to construct a bivalent stream,
+capable of both binary and character IO use :DEFAULT.
+
+Acceptable values for BUFFERING are :FULL, :LINE and :NONE, default
+is :FULL, ie. output is buffered till it is explicitly flushed using
+CLOSE or FINISH-OUTPUT. (FORCE-OUTPUT forces some output to be
+flushed: to ensure all buffered output is flused use FINISH-OUTPUT.)
+
+Streams have no TIMEOUT by default. If one is provided, it is the
+number of seconds the system will at most wait for input to appear on
+the socket stream when trying to read from it.
+
+If AUTO-CLOSE is true, the underlying OS socket is automatically
+closed after the stream and the socket have been garbage collected.
+Default is false.
+
+If SERVE-EVENTS is true, blocking IO on the socket will dispatch to
+the recursive event loop. Default is false.
+
+The stream for SOCKET will be cached, and a second invocation of this
+method will return the same stream. This may lead to oddities if this
+function is invoked with inconsistent arguments \(e.g., one might
+request an input stream and get an output stream in response\)."
(let ((stream
(and (slot-boundp socket 'stream) (slot-value socket 'stream))))
(unless stream
:buffering buffering
:external-format external-format
:timeout timeout
- :auto-close auto-close)))
- (setf (slot-value socket 'stream) stream)
+ :auto-close auto-close
+ :serve-events (and serve-events #+win32 nil)))
+ (setf (slot-value socket 'stream) stream))
(sb-ext:cancel-finalization socket)
stream))
(socket-error-syscall c)
(or (socket-error-symbol c) (socket-error-errno c))
#+cmu (sb-unix:get-unix-error-msg num)
- #+sbcl (sb-int:strerror num)))))
+ #+sbcl
+ #+win32 (sb-win32:format-system-message num)
+ #-win32 (sb-int:strerror num)))))
(:documentation "Common base class of socket related conditions."))
;;; watch out for slightly hacky symbol punning: we use both the value
;; FIXME: Our Texinfo documentation extracter need at least his to spit
;; out the signature. Real documentation would be better...
""
- (let* ((errno (sb-unix::get-errno))
+ (let* ((errno (socket-errno))
(condition (condition-for-errno errno)))
(error condition :errno errno :syscall where)))
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