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      1 /*
      2  * libjingle
      3  * Copyright 2009, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "talk/base/win32socketinit.h"
     29 
     30 #include "talk/base/win32.h"
     31 
     32 namespace talk_base {
     33 
     34 // Please don't remove this function.
     35 void EnsureWinsockInit() {
     36   // The default implementation uses a global initializer, so WSAStartup
     37   // happens at module load time.  Thus we don't need to do anything here.
     38   // The hook is provided so that a client that statically links with
     39   // libjingle can override it, to provide its own initialization.
     40 }
     41 
     42 #ifdef WIN32
     43 class WinsockInitializer {
     44  public:
     45   WinsockInitializer() {
     46     WSADATA wsaData;
     47     WORD wVersionRequested = MAKEWORD(1, 0);
     48     err_ = WSAStartup(wVersionRequested, &wsaData);
     49   }
     50   ~WinsockInitializer() {
     51     if (!err_)
     52       WSACleanup();
     53   }
     54   int error() {
     55     return err_;
     56   }
     57  private:
     58   int err_;
     59 };
     60 WinsockInitializer g_winsockinit;
     61 #endif
     62 
     63 }  // namespace talk_base
     64