def send_packet(self, packet):
logger.debug(format_long("Sending packet: %s", packet))
items = self.parser.encode(packet)
binary = False
for item in items:
self.engine.send(item, binary)
binary = True # Attachments are always considered binary
def callback(*args):
if callback.sent:
logger.warning("Ack already sent")
return
callback.sent = True
logger.debug(format_long("Sending ack: %s", args))
self.send_packet(Packet(type=Packet.ACK, id=id, data=args))
def handle_ack(self, packet):
args = packet.data or []
logger.debug(format_long("Received ack: %s", args))
try:
callback = self.acks.pop(packet.id)
except KeyError:
logger.warning("Invalid ack id")
else:
callback(*args)
def handle_event(self, packet):
args = packet.data or []
logger.debug(format_long("Received event: %s", args))
kwargs = {}
if packet.id:
kwargs['callback'] = self.create_ack_callback(packet.id)
self.event_handlers.emit(*args, **kwargs)
self.socket_handlers.emit('event', *args, **kwargs)
def emit(self, *args, **kwargs):
"""Send event-type message
If callback is provided, it will be called when the server want to
respond to the event (maybe never).
"""
logger.debug(format_long("Sending event: %s", args))
packet = Packet(type=Packet.EVENT, data=args)
callback = kwargs.get('callback', None)
if callback:
packet.id = self.ids
self.acks[packet.id] = callback
self.ids += 1
self.send_packet(packet)
def handle_packet(self, packet):
if self.state != 'open':
return
logger.debug(format_long("Received packet: %s", packet))
self.emit('packet', packet)