sockets/make-socket.lisp

   1 ;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp -*-
   2
   3 ;;   Copyright (C) 2006, 2007 Stelian Ionescu
   4 ;;
   5 ;;   This code is free software; you can redistribute it and/or
   6 ;;   modify it under the terms of the version 2.1 of
   7 ;;   the GNU Lesser General Public License as published by
   8 ;;   the Free Software Foundation, as clarified by the
   9 ;;   preamble found here:
  10 ;;       http://opensource.franz.com/preamble.html
  11 ;;
  12 ;;   This program is distributed in the hope that it will be useful,
  13 ;;   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;;   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;;   GNU General Public License for more details.
  16 ;;
  17 ;;   You should have received a copy of the GNU Lesser General
  18 ;;   Public License along with this library; if not, write to the
  19 ;;   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  20 ;;   Boston, MA 02110-1301, USA
  21
  22 (in-package :net.sockets)
  23
  24 (defun create-socket (&key
  25                       (address-family :internet)
  26                       (type :stream)
  27                       (connect :active)
  28                       (protocol :default)
  29                       (ipv6 *ipv6*)
  30                       (external-format :default))
  31   (check-type address-family (member :internet :local))
  32   (check-type type (member :stream :datagram))
  33   (check-type connect (member :active :passive))
  34   (check-type ipv6 (member nil t :ipv6))
  35   (when (eq address-family :internet)
  36     (setf address-family (if ipv6 :ipv6 :ipv4)))
  37   (let ((socket-class
  38          (select-socket-type address-family type connect protocol)))
  39     (make-instance socket-class :family address-family
  40                    :external-format external-format)))
  41
  42 (declaim (inline %make-internet-stream-socket))
  43 (defun %make-internet-stream-socket (args connect ipv6 ef)
  44   (let (socket address)
  45     (destructuring-bind (&key local-host local-port remote-host remote-port
  46                               backlog reuse-address keepalive nodelay &allow-other-keys) args
  47       (ecase connect
  48         (:active
  49          (assert (xnor local-host local-port))
  50          (assert (xnor remote-host remote-port))
  51          (setf socket (create-socket :address-family :internet :type :stream
  52                                      :connect :active :ipv6 ipv6
  53                                      :external-format ef))
  54          (when keepalive (set-socket-option socket :keep-alive :value t))
  55          (when nodelay (set-socket-option socket :tcp-nodelay :value t))
  56          (when local-host
  57            (setf address (convert-or-lookup-inet-address local-host ipv6))
  58            (bind-address socket address :port local-port
  59                          :reuse-address reuse-address))
  60          (when remote-host
  61            (setf address (convert-or-lookup-inet-address remote-host ipv6))
  62            (connect socket address :port remote-port)))
  63         (:passive
  64          (assert (xnor local-host local-port))
  65          (setf socket (create-socket :address-family :internet :type :stream
  66                                      :connect :passive :ipv6 ipv6))
  67          (when local-host
  68            (setf address (convert-or-lookup-inet-address local-host ipv6))
  69            (bind-address socket address :port local-port
  70                          :reuse-address reuse-address)
  71            (socket-listen socket :backlog backlog)))))
  72     (values socket)))
  73
  74 (declaim (inline %make-local-stream-socket))
  75 (defun %make-local-stream-socket (args connect ef)
  76   (let (socket)
  77     (destructuring-bind (&key local-filename remote-filename backlog &allow-other-keys) args
  78       (ecase connect
  79         (:active
  80          (assert remote-filename)
  81          (setf socket (create-socket :address-family :local :type :stream
  82                                      :connect :active :external-format ef))
  83          (connect socket (make-address remote-filename)))
  84         (:passive
  85          (assert local-filename)
  86          (setf socket (create-socket :address-family :local :type :stream
  87                                      :connect :passive))
  88          (bind-address socket (make-address local-filename))
  89          (socket-listen socket :backlog backlog))))
  90     (values socket)))
  91
  92 (declaim (inline %make-internet-datagram-socket))
  93 (defun %make-internet-datagram-socket (args ipv6 ef)
  94   (let (socket address)
  95     (destructuring-bind (&key local-host local-port remote-host remote-port
  96                               reuse-address broadcast &allow-other-keys) args
  97       (assert (xnor local-host local-port))
  98       (assert (xnor remote-host remote-port))
  99       (setf socket (create-socket :address-family :internet :type :datagram
 100                                   :connect :active :ipv6 ipv6
 101                                   :external-format ef))
 102       (when broadcast (set-socket-option socket :broadcast :value t))
 103       (when local-host
 104         (setf address (convert-or-lookup-inet-address local-host ipv6))
 105         (bind-address socket address :port local-port
 106                       :reuse-address reuse-address))
 107       (when remote-host
 108         (setf address (convert-or-lookup-inet-address remote-host ipv6))
 109         (connect socket address :port remote-port)))
 110     (values socket)))
 111
 112 (declaim (inline %make-local-datagram-socket))
 113 (defun %make-local-datagram-socket (args ef)
 114   (let (socket address)
 115     (destructuring-bind (&key local-filename remote-filename &allow-other-keys) args
 116       (setf socket (create-socket :address-family :local :type :datagram
 117                                   :connect :active :external-format ef))
 118       (when local-filename
 119         (bind-address socket (make-address address)))
 120       (when remote-filename
 121         (connect socket (make-address address))))
 122     (values socket)))
 123
 124 (defun make-socket (&rest args &key address-family type connect (ipv6 *ipv6*)
 125                     format eol (external-format :default) scope-id &allow-other-keys)
 126   (declare (ignore format eol scope-id))
 127   (cond
 128     ((and (eq address-family :internet) (eq type :stream))
 129      (%make-internet-stream-socket args connect ipv6 external-format))
 130     ((and (eq address-family :local) (eq type :stream))
 131      (%make-local-stream-socket args connect external-format))
 132     ((and (eq address-family :internet) (eq type :datagram))
 133      (%make-internet-datagram-socket args ipv6 external-format))
 134     ((and (eq address-family :local) (eq type :datagram))
 135      (%make-local-datagram-socket args external-format))))
 136
 137 (defmacro with-socket ((var &rest args) &body body)
 138   `(with-open-stream (,var (make-socket ,@args)) ,@body))