|  | /* | 
|  | *  Copyright 2009 The WebRTC Project Authors. All rights reserved. | 
|  | * | 
|  | *  Use of this source code is governed by a BSD-style license | 
|  | *  that can be found in the LICENSE file in the root of the source | 
|  | *  tree. An additional intellectual property rights grant can be found | 
|  | *  in the file PATENTS.  All contributing project authors may | 
|  | *  be found in the AUTHORS file in the root of the source tree. | 
|  | */ | 
|  |  | 
|  | #ifndef RTC_BASE_WIN32_SOCKET_INIT_H_ | 
|  | #define RTC_BASE_WIN32_SOCKET_INIT_H_ | 
|  |  | 
|  | #ifndef WEBRTC_WIN | 
|  | #error "Only #include this header in Windows builds" | 
|  | #endif | 
|  |  | 
|  | #include "rtc_base/win32.h" | 
|  |  | 
|  | namespace rtc { | 
|  |  | 
|  | class WinsockInitializer { | 
|  | public: | 
|  | WinsockInitializer() { | 
|  | WSADATA wsaData; | 
|  | WORD wVersionRequested = MAKEWORD(1, 0); | 
|  | err_ = WSAStartup(wVersionRequested, &wsaData); | 
|  | } | 
|  | ~WinsockInitializer() { | 
|  | if (!err_) | 
|  | WSACleanup(); | 
|  | } | 
|  | int error() { return err_; } | 
|  |  | 
|  | private: | 
|  | int err_; | 
|  | }; | 
|  |  | 
|  | }  // namespace rtc | 
|  |  | 
|  | #endif  // RTC_BASE_WIN32_SOCKET_INIT_H_ |