| 1 | /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ |
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| 2 | |
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| 3 | /* GIO - GLib Input, Output and Streaming Library |
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| 4 | * |
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| 5 | * Copyright (C) 2011 Red Hat, Inc. |
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| 6 | * |
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| 7 | * This library is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * This library is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General |
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| 18 | * Public License along with this library; if not, see <http://www.gnu.org/licenses/>. |
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| 19 | */ |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #include "gnetworking.h" |
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| 24 | |
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| 25 | /** |
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| 26 | * SECTION:gnetworking |
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| 27 | * @title: gnetworking.h |
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| 28 | * @short_description: System networking includes |
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| 29 | * @include: gio/gnetworking.h |
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| 30 | * |
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| 31 | * The `<gio/gnetworking.h>` header can be included to get |
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| 32 | * various low-level networking-related system headers, automatically |
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| 33 | * taking care of certain portability issues for you. |
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| 34 | * |
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| 35 | * This can be used, for example, if you want to call setsockopt() |
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| 36 | * on a #GSocket. |
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| 37 | * |
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| 38 | * Note that while WinSock has many of the same APIs as the |
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| 39 | * traditional UNIX socket API, most of them behave at least slightly |
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| 40 | * differently (particularly with respect to error handling). If you |
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| 41 | * want your code to work under both UNIX and Windows, you will need |
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| 42 | * to take these differences into account. |
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| 43 | * |
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| 44 | * Also, under GNU libc, certain non-portable functions are only visible |
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| 45 | * in the headers if you define %_GNU_SOURCE before including them. Note |
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| 46 | * that this symbol must be defined before including any headers, or it |
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| 47 | * may not take effect. |
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| 48 | */ |
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| 49 | |
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| 50 | /** |
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| 51 | * g_networking_init: |
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| 52 | * |
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| 53 | * Initializes the platform networking libraries (eg, on Windows, this |
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| 54 | * calls WSAStartup()). GLib will call this itself if it is needed, so |
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| 55 | * you only need to call it if you directly call system networking |
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| 56 | * functions (without calling any GLib networking functions first). |
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| 57 | * |
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| 58 | * Since: 2.36 |
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| 59 | */ |
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| 60 | void |
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| 61 | g_networking_init (void) |
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| 62 | { |
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| 63 | #ifdef G_OS_WIN32 |
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| 64 | static gsize inited = 0; |
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| 65 | |
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| 66 | if (g_once_init_enter (&inited)) |
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| 67 | { |
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| 68 | WSADATA wsadata; |
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| 69 | |
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| 70 | if (WSAStartup (MAKEWORD (2, 0), &wsadata) != 0) |
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| 71 | g_error ("Windows Sockets could not be initialized" ); |
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| 72 | |
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| 73 | g_once_init_leave (&inited, 1); |
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| 74 | } |
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| 75 | #endif |
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| 76 | } |
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| 77 | |
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