lib/sockets.h

   1 /* sockets.h - wrappers for Windows socket functions
   2
   3    Copyright (C) 2008-2024 Free Software Foundation, Inc.
   4
   5    This file is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    This file is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 /* Written by Simon Josefsson */
  19
  20 #ifndef SOCKETS_H
  21 #define SOCKETS_H 1
  22
  23 /* This file uses _GL_ATTRIBUTE_CONST.  */
  24 #if !_GL_CONFIG_H_INCLUDED
  25  #error "Please include config.h first."
  26 #endif
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #define SOCKETS_1_0 0x0001
  33 #define SOCKETS_1_1 0x0101
  34 #define SOCKETS_2_0 0x0002
  35 #define SOCKETS_2_1 0x0102
  36 #define SOCKETS_2_2 0x0202
  37
  38 int gl_sockets_startup (int version)
  39 #ifndef WINDOWS_SOCKETS
  40   _GL_ATTRIBUTE_CONST
  41 #endif
  42   ;
  43
  44 int gl_sockets_cleanup (void)
  45 #ifndef WINDOWS_SOCKETS
  46   _GL_ATTRIBUTE_CONST
  47 #endif
  48   ;
  49
  50 #ifdef __cplusplus
  51 }
  52 #endif
  53
  54
  55 /* This function is useful it you create a socket using gnulib's
  56    Winsock wrappers but needs to pass on the socket handle to some
  57    other library that only accepts sockets. */
  58 #ifdef WINDOWS_SOCKETS
  59
  60 # include <sys/socket.h>
  61
  62 # if GNULIB_MSVC_NOTHROW
  63 #  include "msvc-nothrow.h"
  64 # else
  65 #  include <io.h>
  66 # endif
  67
  68 static inline SOCKET
  69 gl_fd_to_handle (int fd)
  70 {
  71   return _get_osfhandle (fd);
  72 }
  73
  74 #else
  75
  76 # define gl_fd_to_handle(x) (x)
  77
  78 #endif /* WINDOWS_SOCKETS */
  79
  80 #endif /* SOCKETS_H */