| 1 | (in-package :common-net) |
| 2 | |
| 3 | (require :gray-streams) |
| 4 | |
| 5 | ;;; Gray stream methods |
| 6 | |
| 7 | ;; Redefine stream-socket with Gray superclasses. I know it's ugly, |
| 8 | ;; but I just don't know of a better way to do it. |
| 9 | (defclass stream-socket (socket gray-streams:fundamental-character-input-stream gray-streams:fundamental-character-output-stream |
| 10 | gray-streams:fundamental-binary-input-stream gray-streams:fundamental-binary-output-stream) |
| 11 | ((mode :initform :byte) |
| 12 | (byte-buffer :initform (make-array '(16) :element-type '(unsigned-byte 8) :adjustable t) |
| 13 | :type (array (unsigned-byte 8))) |
| 14 | (byte-read-pos :initform 0 :type integer) |
| 15 | (byte-write-pos :initform 0 :type integer) |
| 16 | (char-buffer :initform (make-array '(16) :element-type 'character :adjustable t :fill-pointer 0) |
| 17 | :type (array character)) |
| 18 | (char-read-pos :initform 0 :type integer) |
| 19 | encoder decoder)) |
| 20 | |
| 21 | (macrolet ((simple (name) |
| 22 | `(defmethod |
| 23 | ,(intern (symbol-name name) (find-package :gray-streams)) ((socket stream-socket)) |
| 24 | (,(intern (concatenate 'string "GRAY-" (symbol-name name)) (symbol-package 'stream-socket)) socket))) |
| 25 | (simple-null (name) |
| 26 | `(defmethod |
| 27 | ,(intern (symbol-name name) (find-package :gray-streams)) ((socket stream-socket)) |
| 28 | nil))) |
| 29 | (simple stream-element-type) |
| 30 | (simple open-stream-p) |
| 31 | (simple stream-read-byte) |
| 32 | (simple stream-read-char) |
| 33 | (simple stream-read-char-no-hang) |
| 34 | (simple stream-peek-char) |
| 35 | (simple stream-listen) |
| 36 | (simple-null stream-line-column) |
| 37 | (simple-null stream-finish-output) |
| 38 | (simple-null stream-force-output) |
| 39 | (simple-null stream-clear-output)) |
| 40 | |
| 41 | (defmethod gray-streams:stream-write-byte ((socket stream-socket) byte) |
| 42 | (gray-stream-write-char socket byte)) |
| 43 | |
| 44 | (defmethod gray-streams:stream-unread-char ((socket stream-socket) char) |
| 45 | (gray-stream-unread-char socket char)) |
| 46 | |
| 47 | (defmethod gray-streams:stream-write-char ((socket stream-socket) char) |
| 48 | (gray-stream-write-char socket char)) |
| 49 | |
| 50 | (defmethod gray-streams:stream-close ((socket stream-socket) &key abort) |
| 51 | (declare (ignore abort)) |
| 52 | (prog1 |
| 53 | (call-next-method) |
| 54 | (close-socket socket))) |
| 55 | |
| 56 | (defmethod gray-streams:stream-start-line-p ((socket stream-socket)) |
| 57 | (eql (gray-streams:stream-line-column socket) 0)) |
| 58 | |
| 59 | (defmethod gray-streams:stream-fresh-line ((socket stream-socket)) |
| 60 | (unless (gray-streams:stream-start-line-p socket) |
| 61 | (gray-streams:stream-terpri socket) |
| 62 | t)) |
| 63 | |
| 64 | (defmethod gray-streams:stream-write-string ((socket stream-socket) string &optional (start 0) (end (length string))) |
| 65 | (gray-streams:stream-write-sequence socket string start end)) |
| 66 | |
| 67 | (defmethod gray-streams:stream-terpri ((socket stream-socket)) |
| 68 | (gray-streams:stream-write-char socket #\newline)) |
| 69 | |
| 70 | (defmethod gray-streams:stream-read-sequence ((socket stream-socket) seq &optional (start 0) (end (length seq))) |
| 71 | (gray-stream-read-sequence socket seq start end)) |
| 72 | |
| 73 | (defmethod gray-streams:stream-write-sequence ((socket stream-socket) seq &optional (start 0) (end (length seq))) |
| 74 | (gray-stream-write-sequence socket seq start end)) |
| 75 | |
| 76 | ;;; Networking implementation |
| 77 | |
| 78 | (defclass abcl-socket (socket) |
| 79 | ((java-socket :initarg :java-socket) |
| 80 | (java-channel :initarg :java-channel))) |
| 81 | (defclass abcl-listen-socket (listen-socket abcl-socket) ()) |
| 82 | (defclass abcl-stream-socket (stream-socket abcl-socket) ()) |
| 83 | (defclass abcl-datagram-socket (datagram-socket abcl-socket) ()) |
| 84 | |
| 85 | (defparameter *sk-jclass* (java:jclass "java.net.Socket")) |
| 86 | (defparameter *dsk-jclass* (java:jclass "java.net.ServerSocket")) |
| 87 | (defparameter *ssk-jclass* (java:jclass "java.net.DatagramSocket")) |
| 88 | (defparameter *sc-jclass* (java:jclass "java.nio.channels.SocketChannel")) |
| 89 | (defparameter *dc-jclass* (java:jclass "java.nio.channels.DatagramChannel")) |
| 90 | (defparameter *ssc-jclass* (java:jclass "java.nio.channels.ServerSocketChannel")) |
| 91 | (defparameter *selc-jclass* (java:jclass "java.nio.channels.SelectableChannel")) |
| 92 | (defparameter *wc-jclass* (java:jclass "java.nio.channels.WritableByteChannel")) |
| 93 | (defparameter *rc-jclass* (java:jclass "java.nio.channels.ReadableByteChannel")) |
| 94 | (defparameter *bbuf-jclass* (java:jclass "java.nio.ByteBuffer")) |
| 95 | (defparameter *ia-jclass* (java:jclass "java.net.InetAddress")) |
| 96 | (defparameter *i4a-jclass* (java:jclass "java.net.Inet4Address")) |
| 97 | (defparameter *i6a-jclass* (java:jclass "java.net.Inet6Address")) |
| 98 | (defparameter *sa-jclass* (java:jclass "java.net.SocketAddress")) |
| 99 | (defparameter *isa-jclass* (java:jclass "java.net.InetSocketAddress")) |
| 100 | (defparameter *int-jclass* (java:jclass "int")) |
| 101 | |
| 102 | (defun jclose-channel (jsk) |
| 103 | (let ((meth (java:jmethod *selc-jclass* "close"))) |
| 104 | (java:jcall meth jsk))) |
| 105 | |
| 106 | (defmacro with-java-channel ((var socket) &body body) |
| 107 | (let ((success (gensym "SUCCESS"))) |
| 108 | `(let ((,var ,socket) |
| 109 | (,success nil)) |
| 110 | (unwind-protect |
| 111 | (multiple-value-prog1 |
| 112 | (progn ,@body) |
| 113 | (setf ,success t)) |
| 114 | (unless ,success |
| 115 | (jclose-channel ,var)))))) |
| 116 | |
| 117 | ;; These are probably horribly inefficient, but I haven't found any |
| 118 | ;; better way of doing it. |
| 119 | (defun make-jarray (seq &optional (start 0) (end (length seq))) |
| 120 | (let ((byte (java:jclass "byte"))) |
| 121 | (let ((jarray (java:jnew-array byte (- end start)))) |
| 122 | (dotimes (i (- end start)) |
| 123 | (java:jcall (java:jmethod (java:jclass "java.lang.reflect.Array") "setByte" (java:jclass "java.lang.Object") *int-jclass* byte) |
| 124 | nil jarray i (elt seq (+ start i)))) |
| 125 | jarray))) |
| 126 | |
| 127 | (defun undo-jarray (jarray &optional (into (make-array (list (java:jarray-length jarray)))) (start 0) (end (length into))) |
| 128 | (dotimes (i (- end start)) |
| 129 | (setf (elt into (+ i start)) (java:jarray-ref jarray i))) |
| 130 | into) |
| 131 | |
| 132 | (defun map-socket-address (address) |
| 133 | (check-type address inet-port-address) |
| 134 | (java:jnew (java:jconstructor *isa-jclass* *ia-jclass* *int-jclass*) |
| 135 | (etypecase address |
| 136 | ((or ipv4-address ipv6-address) |
| 137 | (java:jcall (java:jmethod *ia-jclass* "getByAddress" (java:jclass "[B")) nil |
| 138 | (make-jarray (slot-value address 'host-bytes))))) |
| 139 | (slot-value address 'port))) |
| 140 | |
| 141 | (defun unmap-inet-address (jhost) |
| 142 | (cond ((java:jclass-of jhost "java.net.Inet4Address") |
| 143 | (let ((jbytes (java:jcall (java:jmethod *ia-jclass* "getAddress") jhost))) |
| 144 | (make-instance 'ipv4-host-address :host-bytes (undo-jarray jbytes)))) |
| 145 | ((java:jclass-of jhost "java.net.Inet6Address") |
| 146 | (let ((jbytes (java:jcall (java:jmethod *ia-jclass* "getAddress") jhost))) |
| 147 | (make-instance 'ipv6-host-address :host-bytes (undo-jarray jbytes)))) |
| 148 | (t (error "Unknown InetAddress class.")))) |
| 149 | |
| 150 | (defun unmap-socket-address (jaddress) |
| 151 | (assert (java:jclass-of jaddress "java.net.InetSocketAddress") (jaddress)) |
| 152 | (let ((port (java:jcall (java:jmethod *isa-jclass* "getPort") jaddress)) |
| 153 | (jhost (java:jcall (java:jmethod *isa-jclass* "getAddress") jaddress))) |
| 154 | (values (unmap-inet-address jhost) port))) |
| 155 | |
| 156 | (defmacro retry-loop ((format-string &rest format-args) &body body) |
| 157 | `(loop (with-simple-restart (:retry ,format-string ,@format-args) |
| 158 | (return ,@body)))) |
| 159 | |
| 160 | (defun check-not-closed (socket) |
| 161 | (declare (type abcl-socket socket)) |
| 162 | (when (null (slot-value socket 'java-channel)) |
| 163 | (error 'socket-closed :socket socket))) |
| 164 | |
| 165 | (defmethod close-socket ((socket abcl-socket)) |
| 166 | (threads:with-thread-lock (socket) |
| 167 | (with-slots (java-channel) socket |
| 168 | (unless (null java-channel) |
| 169 | (jclose-channel java-channel) |
| 170 | (setf java-channel nil))))) |
| 171 | |
| 172 | (defmethod socket-open-p ((socket abcl-socket)) |
| 173 | (threads:with-thread-lock (socket) |
| 174 | (if (slot-value socket 'java-channel) t nil))) |
| 175 | |
| 176 | (defmethod socket-local-address ((socket abcl-stream-socket)) |
| 177 | (multiple-value-bind (host port) |
| 178 | (unmap-socket-address |
| 179 | (threads:with-thread-lock (socket) |
| 180 | (check-not-closed socket) |
| 181 | (java:jcall (java:jmethod *sk-jclass* "getLocalSocketAddress") (slot-value socket 'java-socket)))) |
| 182 | (etypecase host |
| 183 | (ipv4-address (make-instance 'tcp4-address :port port :host-address host)) |
| 184 | (ipv6-address (make-instance 'tcp6-address :port port :host-address host))))) |
| 185 | |
| 186 | (defmethod socket-remote-address ((socket abcl-stream-socket)) |
| 187 | (multiple-value-bind (host port) |
| 188 | (unmap-socket-address |
| 189 | (threads:with-thread-lock (socket) |
| 190 | (check-not-closed socket) |
| 191 | (java:jcall (java:jmethod *sk-jclass* "getRemoteSocketAddress") (slot-value socket 'java-socket)))) |
| 192 | (etypecase host |
| 193 | (ipv4-address (make-instance 'tcp4-address :port port :host-address host)) |
| 194 | (ipv6-address (make-instance 'tcp6-address :port port :host-address host))))) |
| 195 | |
| 196 | (defmethod socket-send ((socket abcl-stream-socket) buf &key (start 0) (end (length buf)) no-hang) |
| 197 | (threads:with-thread-lock (socket) |
| 198 | (check-not-closed socket) |
| 199 | (with-slots (java-channel) socket |
| 200 | (unwind-protect |
| 201 | (progn |
| 202 | (when no-hang |
| 203 | (java:jcall (java:jmethod *selc-jclass* "configureBlocking" (java:jclass "boolean")) java-channel (java:make-immediate-object nil :boolean))) |
| 204 | (retry-loop ("Retry the send operation.") |
| 205 | (java:jcall (java:jmethod *wc-jclass* "write" *bbuf-jclass*) java-channel |
| 206 | (java:jcall (java:jmethod *bbuf-jclass* "wrap" (java:jclass "[B")) nil (make-jarray buf start end))))) |
| 207 | (java:jcall (java:jmethod *selc-jclass* "configureBlocking" (java:jclass "boolean")) java-channel (java:make-immediate-object t :boolean)))))) |
| 208 | |
| 209 | (defmethod socket-recv-into ((socket abcl-stream-socket) buf &key (start 0) (end (length buf)) no-hang) |
| 210 | (threads:with-thread-lock (socket) |
| 211 | (check-not-closed socket) |
| 212 | (with-slots (java-channel) socket |
| 213 | (unwind-protect |
| 214 | (progn |
| 215 | (when no-hang |
| 216 | (java:jcall (java:jmethod *selc-jclass* "configureBlocking" (java:jclass "boolean")) java-channel (java:make-immediate-object nil :boolean))) |
| 217 | (retry-loop ("Try receiving again.") |
| 218 | (let* ((jbuf (java:jnew-array (java:jclass "byte") (- end start))) |
| 219 | (ret (java:jcall (java:jmethod *rc-jclass* "read" *bbuf-jclass*) java-channel |
| 220 | (java:jcall (java:jmethod *bbuf-jclass* "wrap" (java:jclass "[B")) nil jbuf)))) |
| 221 | (if (< ret 0) |
| 222 | (values nil nil) |
| 223 | (progn |
| 224 | (undo-jarray jbuf buf start end) |
| 225 | (values ret nil)))))) |
| 226 | (java:jcall (java:jmethod *selc-jclass* "configureBlocking" (java:jclass "boolean")) java-channel (java:make-immediate-object t :boolean)))))) |
| 227 | |
| 228 | (defmethod connect-to-address ((address tcp-address) &key local) |
| 229 | (let ((ch |
| 230 | (retry-loop ("Try connecting again.") |
| 231 | (with-java-channel (ch (java:jcall (java:jmethod *sc-jclass* "open") nil)) |
| 232 | (let ((sk (java:jcall (java:jmethod *sc-jclass* "socket") ch))) |
| 233 | (when local |
| 234 | (java:jcall (java:jmethod *sk-jclass* "bind" *sa-jclass*) sk (map-socket-address local))) |
| 235 | (java:jcall (java:jmethod *sk-jclass* "connect" *sa-jclass*) sk (map-socket-address address))) |
| 236 | ch)))) |
| 237 | (make-instance 'abcl-stream-socket |
| 238 | :java-channel ch |
| 239 | :java-socket (java:jcall (java:jmethod *sc-jclass* "socket") ch)))) |