def handle_sigusr1(self, signum, frame):
		"""Handle signal SIGUSR1 to reload server configuration"""

		logging.info('reload server configuration (by signal)')
		# Catch exception in the I{main} method caused by received signal
		self.__by_signal_do = 1
		config = get_conf(CFG_PATH)

		# PID file cannot be changed
		config['server']['pid'] = self._config['server']['pid']

		# Log file path changed
		if self._config['server']['log'] != config['server']['log']:
			logging.close(0)
			logging.init(0, filename=config['server']['log'])

		# Local socket path changed
		init_loc = (config['server']['sock'] != self._config['server']['sock'])

		# SSL option changed and/or server ip/port, we need to
		# shutdown current socket and open new one
		init_srv = (config['ssl'] != self._config['ssl'] \
			or config['server']['port'] != self._config['server']['port'] \
			or config['server']['ip'] != self._config['server']['ip'])

		self._config = config.copy()

		if init_srv:
			try:
				self.socket.shutdown(socket.SHUT_RDWR)
				self._create_bind_activate(1)
			except Exception as e:
				# @todo: fix: if cannot bind new socket, do not reload config
				self.__by_signal_do = 0
				logging.error(e)

		if init_loc:
			try:
				self._create_local_socket(1)
			except Exception as e:
				pass

		self.socket.settimeout(config['server']['timeout'])
		# Non-blocking mode
		self.__local_sock.settimeout(0.0)
		logging.info('server configuration reloaded')
		del config
def clean_on_exit(fp_sock):
	"""Method executed on process exit"""

	logging.info('clean up on process exit')
	try:	os.remove(fp_sock)
	except:	pass
	logging.info('shutdown logging system')
	logging.close()


if len(sys.argv) <2:
	print_usage()
	sys.exit()

# Init logging to console
logging.init(3)

try:
	config = get_conf(CFG_PATH)

	if sys.argv[1].lower() == 'start':
		msg_stdout('Running on Python %s' % sys.version.replace('\n', ''))

		aliases = get_aliases(config['get']['aliases_file'])
		check_aliases(config['get']['base_dir'], aliases)
		if not aliases:
			msg_stdout('File aliases absent', 1)
		else:
			msg_stdout('%d file aliases loaded' % len(aliases))

		server = AsyncHTTPServer(config, SFSHTTPHandler)