<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_vig9m7lvd0hcpprr3tqjijreht, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
static int hasOpenPort_timeout = 5000;
static bool isPortOpen(S ip, int port) {
  try {
    Socket socket = new Socket();
    socket.connect(new InetSocketAddress(ip, port), hasOpenPort_timeout);
    socket.close();
    true;
  } catch (Exception ex) {
    false;
  }
}