internal static void CompleteInitialization(SafeCloseSocketAndEvent socketAndEventHandle)
{
SafeWaitHandle safeWaitHandle = socketAndEventHandle.waitHandle.SafeWaitHandle;
bool success = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
safeWaitHandle.DangerousAddRef(ref success);
}
catch
{
if (success)
{
safeWaitHandle.DangerousRelease();
socketAndEventHandle.waitHandle = null;
success = false;
}
}
finally
{
if (success)
{
safeWaitHandle.Dispose();
}
}
}
internal static SafeCloseSocketAndEvent CreateWSASocketWithEvent(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType, bool autoReset, bool signaled)
{
SafeCloseSocketAndEvent target = new SafeCloseSocketAndEvent();
SafeCloseSocket.CreateSocket(SafeCloseSocket.InnerSafeCloseSocket.CreateWSASocket(addressFamily, socketType, protocolType), target);
if (target.IsInvalid)
{
throw new SocketException();
}
target.waitHandle = new AutoResetEvent(false);
CompleteInitialization(target);
return(target);
}
internal NetworkAddressChangePolled()
{
int num;
Socket.InitializeSockets();
if (Socket.OSSupportsIPv4)
{
num = -1;
this.ipv4Socket = SafeCloseSocketAndEvent.CreateWSASocketWithEvent(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.IP, true, false);
UnsafeNclNativeMethods.OSSOCK.ioctlsocket(this.ipv4Socket, -2147195266, ref num);
}
if (Socket.OSSupportsIPv6)
{
num = -1;
this.ipv6Socket = SafeCloseSocketAndEvent.CreateWSASocketWithEvent(AddressFamily.InterNetworkV6, SocketType.Dgram, ProtocolType.IP, true, false);
UnsafeNclNativeMethods.OSSOCK.ioctlsocket(this.ipv6Socket, -2147195266, ref num);
}
this.Setup(StartIPOptions.Both);
}
public void Dispose()
{
if (!this.disposed)
{
lock (this)
{
if (!this.disposed)
{
if (this.ipv6Socket != null)
{
this.ipv6Socket.Close();
this.ipv6Socket = null;
}
if (this.ipv4Socket != null)
{
this.ipv4Socket.Close();
this.ipv6Socket = null;
}
this.disposed = true;
}
}
}
}