<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_hp8v8eal5qt88kbbct86216ipr, 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 />
// -1 in case of error
static int returnCodeHttpHEAD(int timeout, String url) {
  url = absoluteURL(url);
  HttpURLConnection conn = null;
  InputStream in = null;
  try {
    conn = (HttpURLConnection) new URL(url).openConnection();
    setURLConnectionTimeouts(conn, timeout);
    conn.setRequestMethod("HEAD");
    conn.setRequestProperty("X-No-Cookies", "1");
    in = conn.getInputStream();
    ret conn.getResponseCode();
  } catch (IOException e) {
    ret -1;
  } finally {
    closeURLConnection(conn, in);
  }
}