By providing CORE_SESSIONS_SESSION_LOG_PATH_PATTERN (e.g. "/log/%Y-%m-%d.log") all
finished sessions will be logged to a file according to the provided strftime-pattern. The
actual value is calculated from when the session closed. CORE_SESSIONS_PERSIST must
be set. Default: not set.
Set CORE_SESSIONS_SESSION_LOG_BUFFER_SEC to the number of seconds the log should be
buffered in memory before persisted to disk. Default 15 seconds.
This fixes a bug in the rtmp library where an error has been left
unchecked caused by a malformed app or playPath. This led to a nil
value for the URL of the publish or play request. However, this
URL should never be nil and accessing this URL caused a panic and
finally shutting the core down, resulting in a DoS.
Thanks to Johannes Frank
