(in-package :sb-bsd-sockets) ;;; Our class and constructor (eval-when (:compile-toplevel :load-toplevel :execute)   (defclass inet-socket (socket)     ((family :initform sockint::AF-INET))     (:documentation "Class representing TCP and UDP sockets. Examples:  (make-instance 'inet-socket :type :stream :protocol :tcp)  (make-instance 'inet-socket :type :datagram :protocol :udp) "))) ;;; XXX should we *...* this? (defparameter inet-address-any (vector 0 0 0 0)) ;;; binding a socket to an address and port.  Doubt that anyone's ;;; actually using this much, to be honest. (defun make-inet-address (dotted-quads)   "Return a vector of octets given a string DOTTED-QUADS in the format \"127.0.0.1\""   (map 'vector        #'parse-integer        (split dotted-quads nil '(#\.)))) (define-condition unknown-protocol ()   ((name :initarg :name          :reader unknown-protocol-name))   (:report (lambda (c s)              (format s "Protocol not found: ~a" (prin1-to-string                                                  (unknown-protocol-name c)))))) ;;; getprotobyname only works in the internet domain, which is why this ;;; is here (defun get-protocol-by-name (name)      ;exported  "Returns the network protocol number associated with the string NAME, using getprotobyname(2) which typically looks in NIS or /etc/protocols"   ;; for extra brownie points, could return canonical protocol name  ;; and aliases as extra values  (let ((ent (sockint::getprotobyname name)))     (if (sb-alien::null-alien ent)         (error 'unknown-protocol :name name))     (sockint::protoent-proto ent))) ;;; our protocol provides make-sockaddr-for, size-of-sockaddr, ;;; bits-of-sockaddr (defmethod make-sockaddr-for ((socket inet-socket) &optional sockaddr &rest address &aux (host (first address)) (port (second address)))   (let ((sockaddr (or sockaddr (sockint::allocate-sockaddr-in))))     (when (and host port)       (setf host (coerce host '(simple-array (unsigned-byte 8) (4))))       ;; port and host are represented in C as "network-endian" unsigned      ;; integers of various lengths.  This is stupid.  The value of the      ;; integer doesn't matter (and will change depending on your      ;; machine's endianness); what the bind(2) call is interested in      ;; is the pattern of bytes within that integer.       ;; We have no truck with such dreadful type punning.  Octets to      ;; octets, dust to dust.       (setf (sockint::sockaddr-in-family sockaddr) sockint::af-inet)       (setf (sb-alien:deref (sockint::sockaddr-in-port sockaddr) 0) (ldb (byte 8 8) port))       (setf (sb-alien:deref (sockint::sockaddr-in-port sockaddr) 1) (ldb (byte 8 0) port))       (setf (sb-alien:deref (sockint::sockaddr-in-addr sockaddr) 0) (elt host 0))       (setf (sb-alien:deref (sockint::sockaddr-in-addr sockaddr) 1) (elt host 1))       (setf (sb-alien:deref (sockint::sockaddr-in-addr sockaddr) 2) (elt host 2))       (setf (sb-alien:deref (sockint::sockaddr-in-addr sockaddr) 3) (elt host 3)))     sockaddr)) (defmethod free-sockaddr-for ((socket inet-socket) sockaddr)   (sockint::free-sockaddr-in sockaddr)) (defmethod size-of-sockaddr ((socket inet-socket))   sockint::size-of-sockaddr-in) (defmethod bits-of-sockaddr ((socket inet-socket) sockaddr)   "Returns address and port of SOCKADDR as multiple values"   (values    (coerce (loop for i from 0 below 4                  collect (sb-alien:deref (sockint::sockaddr-in-addr sockaddr) i))            '(vector (unsigned-byte 8) 4))    (+ (* 256 (sb-alien:deref (sockint::sockaddr-in-port sockaddr) 0))       (sb-alien:deref (sockint::sockaddr-in-port sockaddr) 1)))) (defun make-inet-socket (type protocol)   "Make an INET socket.  Deprecated in favour of make-instance"   (make-instance 'inet-socket :type type :protocol protocol))