session_start() in bootstrap.php overwrites default session from Drupal. That causes sometimes users can not login - in my case it had strong collision with Services ( https://www.drupal.org/project/services ), mobile clients were not able to perform any queries after login. Session was closed due to unclear reason.
I think those lines should be removed, because Drupal keeps the session itself.
session_start() in bootstrap.php overwrites default session from Drupal. That causes sometimes users can not login - in my case it had strong collision with Services ( https://www.drupal.org/project/services ), mobile clients were not able to perform any queries after login. Session was closed due to unclear reason.
I think those lines should be removed, because Drupal keeps the session itself.