Ros_CSharp.TcpTransport.socketUpdate C# (CSharp) Method

        private void socketUpdate(int events)
        {
            ScopedTimer.Ping();
            lock (close_mutex)
            {
                if (closed) return;
            }

            if (is_server)
            {
                TcpTransport transport = accept();
                if (transport != null)
                {
                    if (accept_cb == null) throw new Exception("NULL ACCEPT_CB FTL!");
                    accept_cb(transport);
                }
            }
            else
            {
                if ((events & POLLIN) != 0 && expecting_read) //POLL IN FLAG
                {
                    if (read_cb != null)
                    {
                        read_cb(this);
                    }
                }

                if ((events & POLLOUT) != 0 && expecting_write)
                {
                    if (write_cb != null)
                        write_cb(this);
                }

                if ((events & POLLERR) != 0 || (events & POLLHUP) != 0 || (events & POLLNVAL) != 0)
                {
                    int error = 0;
                    try
                    {
                        error = (int) sock.GetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Error);
                    }
                    catch (Exception e)
                    {
                        EDB.WriteLine("Failed to get sock options! (error: " + error + ")" + e);
                    }
                    if (error != 0)
                        EDB.WriteLine("SOCKET ERROR = " + error);
                    close();
                }
            }
        }