talk/base/win32socketinit.cc

/*
 * libjingle
 * Copyright 2009, Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "talk/base/win32socketinit.h"

#include "talk/base/win32.h"

namespace talk_base {

// Please don't remove this function.
void EnsureWinsockInit() {
  // The default implementation uses a global initializer, so WSAStartup
  // happens at module load time.  Thus we don't need to do anything here.
  // The hook is provided so that a client that statically links with
  // libjingle can override it, to provide its own initialization.
}

#ifdef WIN32
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_;
};
WinsockInitializer g_winsockinit;
#endif

}  // namespace talk_base