def start(self, port=None, io_loop=None):
""" Start server if not yet started. Raise an exception if server is already started.
:param port: (optional) port where server must run. If not provided,
try to start on a random selected port. Use property `port` to get current server port.
:param io_loop: (optional) tornado IO lopp where server must run. If not provided, get
default IO loop instance (tornado.ioloop.IOLoop.instance()).
"""
if self.backend is not None:
raise exceptions.DiplomacyException(
'Server is already running on port %s.' % self.backend.port)
if port is None:
port = 8432
if io_loop is None:
io_loop = tornado.ioloop.IOLoop.instance()
handlers = [
tornado.web.url(r"/", ConnectionHandler, {'server': self}),
]
settings = {
'cookie_secret': common.generate_token(),
'xsrf_cookies': True,
'websocket_ping_interval': self.ping_seconds,
'websocket_ping_timeout': 2 * self.ping_seconds,
'websocket_max_message_size': 64 * 1024 * 1024
}
self.backend = _ServerBackend()
self.backend.application = tornado.web.Application(
handlers, **settings)
self.backend.http_server = self.backend.application.listen(port)
self.backend.io_loop = io_loop
self.backend.port = port
self.set_tasks(io_loop)
LOGGER.info('Running on port %d', self.backend.port)
if not io_loop.asyncio_loop.is_running():
io_loop.start()
def create_token(self):
""" Return a new token guaranteed to not exist in this Users object. """
token = generate_token()
while self.has_token(token):
token = generate_token()
return token
def test_generate_token():
""" Test token generation. """
for n_bytes in (128, 344):
token = common.generate_token(n_bytes)
assert isinstance(token, str) and len(token) == 2 * n_bytes