def __init__(self, parent, hostname, port, ssh_tunnel=None):
QtCore.QObject.__init__(self, parent)
self._hostname = hostname
self._port = port
self._ssh_tunnel = ssh_tunnel
self.connected = False
self._plotdata = {}
self._subscribed_titles = {}
self._recorded_titles = {}
self._recorder = None
self._data_socket = ZmqSocket(SUB, self)
self.conf = {}
self._group_structure = {None: []}
try:
self._connect()
self.connected = True
self._get_data_port()
self.titles = None
self.data_type = None
except (RuntimeError, zmq.error.ZMQError):
QtGui.QMessageBox.warning(self.parent(), "Connection failed!", "Could not connect to %s" % self.name())
raise
def _connect(self):
"""Connect to the configured backend"""
self._ctrl_socket = ZmqSocket(REQ)
addr = "tcp://%s:%d" % (self._hostname, self._port)
self._ctrl_socket.ready_read.connect(self._get_request_reply)
self._ctrl_socket.connect_socket(addr, self._ssh_tunnel)
