System.Net.Sockets.SocketPal.GetSockName C# (CSharp) Method

        public static unsafe SocketError GetSockName(SafeCloseSocket handle, byte[] buffer, ref int nameLen)
        {
            Interop.Error err;
            int addrLen = nameLen;
            fixed (byte* rawBuffer = buffer)
            {
                err = Interop.Sys.GetSockName(handle, rawBuffer, &addrLen);
            }

            nameLen = addrLen;
            return err == Interop.Error.SUCCESS ? SocketError.Success : GetSocketErrorForErrorCode(err);
        }