System.Net.SafeCloseHandle.SafeLocalFree.SafeGlobalFree.SafeOverlappedFree.SafeCloseSocket.SafeCloseSocket.CreateSocket C# (CSharp) Method

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

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