def _init(self, data):
self.state = IPCProtocol.State.CONNECTED
self.protocol_version = min(struct.unpack('B', data)[0], 3)
self._writer = QWriter(stream=None,
protocol_version=self.protocol_version)
self._reader = QReader(stream=None)
self.factory.clientReady(self)
def open(self):
'''Initialises connection to q service.
If the connection hasn't been initialised yet, invoking the
:func:`.open` creates a new socket and performs a handshake with a q
service.
:raises: :class:`.QConnectionException`, :class:`.QAuthenticationException`
'''
if not self._connection:
if not self.host:
raise QConnectionException('Host cannot be None')
self._init_socket()
self._initialize()
self._writer = QWriter(self._connection, protocol_version = self._protocol_version)
self._reader = QReader(self._connection.makefile())
