56 lines
2.5 KiB
C
56 lines
2.5 KiB
C
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/*
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* Copyright (C) 2015 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <cutils/sockets.h>
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// https://msdn.microsoft.com/en-us/library/windows/desktop/ms741549(v=vs.85).aspx
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// claims WSACleanup() should be called before program exit, but general
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// consensus seems to be that it hasn't actually been necessary for a long time,
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// likely since Windows 3.1. Additionally, trying to properly use WSACleanup()
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// can be extremely tricky and cause deadlock when using threads or atexit().
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//
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// Both adb (1) and Chrome (2) purposefully avoid WSACleanup() with no issues.
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// (1) https://android.googlesource.com/platform/system/core.git/+/master/adb/sysdeps_win32.cpp
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// (2) https://code.google.com/p/chromium/codesearch#chromium/src/net/base/winsock_init.cc
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bool initialize_windows_sockets() {
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// There's no harm in calling WSAStartup() multiple times but no benefit
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// either, we may as well skip it after the first.
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static bool init_success = false;
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if (!init_success) {
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WSADATA wsaData;
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init_success = (WSAStartup(MAKEWORD(2, 2), &wsaData) == 0);
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}
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return init_success;
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}
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int socket_close(cutils_socket_t sock) {
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return closesocket(sock);
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}
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