code: private static void logSession(final Session session, boolean async, final String activity) {
  		final TransportStrategy transportStrategy = TransportStrategy.findStrategyForSession(session);
  		final Properties properties = session.getProperties();
  		final String sessionDetails = (transportStrategy != null) ? transportStrategy.toString(properties) : properties.toString();
  		LOGGER.debug("starting{} {} with {}", async ? " async" : "", activity, sessionDetails);
  	}
docs: Simply logs host details, credentials used and whether authentication will take place and finally the transport protocol used.