1  /* sockets.h - wrappers for Windows socket functions
       2  
       3     Copyright (C) 2008-2023 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  #define SOCKETS_1_0 0x0001
      29  #define SOCKETS_1_1 0x0101
      30  #define SOCKETS_2_0 0x0002
      31  #define SOCKETS_2_1 0x0102
      32  #define SOCKETS_2_2 0x0202
      33  
      34  int gl_sockets_startup (int version)
      35  #ifndef WINDOWS_SOCKETS
      36    _GL_ATTRIBUTE_CONST
      37  #endif
      38    ;
      39  
      40  int gl_sockets_cleanup (void)
      41  #ifndef WINDOWS_SOCKETS
      42    _GL_ATTRIBUTE_CONST
      43  #endif
      44    ;
      45  
      46  /* This function is useful it you create a socket using gnulib's
      47     Winsock wrappers but needs to pass on the socket handle to some
      48     other library that only accepts sockets. */
      49  #ifdef WINDOWS_SOCKETS
      50  
      51  # include <sys/socket.h>
      52  
      53  # if GNULIB_MSVC_NOTHROW
      54  #  include "msvc-nothrow.h"
      55  # else
      56  #  include <io.h>
      57  # endif
      58  
      59  static inline SOCKET
      60  gl_fd_to_handle (int fd)
      61  {
      62    return _get_osfhandle (fd);
      63  }
      64  
      65  #else
      66  
      67  # define gl_fd_to_handle(x) (x)
      68  
      69  #endif /* WINDOWS_SOCKETS */
      70  
      71  #endif /* SOCKETS_H */