System.Net.Sockets.SafeCloseSocket.CreateSocket C# (CSharp) Méthode

        protected static void CreateSocket(InnerSafeCloseSocket socket, SafeCloseSocket target)
        {
            if (socket != null && socket.IsInvalid)
            {
                target.SetHandleAsInvalid();
                return;
            }

            bool b = false;
            try
            {
                socket.DangerousAddRef(ref b);
            }
            catch
            {
                if (b)
                {
                    socket.DangerousRelease();
                    b = false;
                }
            }
            finally
            {
                if (b)
                {
                    target.SetInnerSocket(socket);
                    socket.Dispose();
                }
                else
                {
                    target.SetHandleAsInvalid();
                }
            }
        }

 private SocketError FinishOperationAccept(Internals.SocketAddress remoteSocketAddress)
 {
     System.Buffer.BlockCopy(_acceptBuffer, 0, remoteSocketAddress.Buffer, 0, _acceptAddressBufferCount);
     _acceptSocket = _currentSocket.CreateAcceptSocket(
         SafeCloseSocket.CreateSocket(_acceptedFileDescriptor),
         _currentSocket._rightEndPoint.Create(remoteSocketAddress));
     return(SocketError.Success);
 }