1  /* sockets.h - wrappers for Windows socket functions
       2  
       3     Copyright (C) 2008-2022 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  #define SOCKETS_1_0 0x0001
      24  #define SOCKETS_1_1 0x0101
      25  #define SOCKETS_2_0 0x0002
      26  #define SOCKETS_2_1 0x0102
      27  #define SOCKETS_2_2 0x0202
      28  
      29  int gl_sockets_startup (int version)
      30  #ifndef WINDOWS_SOCKETS
      31    _GL_ATTRIBUTE_CONST
      32  #endif
      33    ;
      34  
      35  int gl_sockets_cleanup (void)
      36  #ifndef WINDOWS_SOCKETS
      37    _GL_ATTRIBUTE_CONST
      38  #endif
      39    ;
      40  
      41  /* This function is useful it you create a socket using gnulib's
      42     Winsock wrappers but needs to pass on the socket handle to some
      43     other library that only accepts sockets. */
      44  #ifdef WINDOWS_SOCKETS
      45  
      46  # include <sys/socket.h>
      47  
      48  # if GNULIB_MSVC_NOTHROW
      49  #  include "msvc-nothrow.h"
      50  # else
      51  #  include <io.h>
      52  # endif
      53  
      54  static inline SOCKET
      55  gl_fd_to_handle (int fd)
      56  {
      57    return _get_osfhandle (fd);
      58  }
      59  
      60  #else
      61  
      62  # define gl_fd_to_handle(x) (x)
      63  
      64  #endif /* WINDOWS_SOCKETS */
      65  
      66  #endif /* SOCKETS_H */