def close(self):
if self.in_websocket_mode:
try:
self.websocket_handler.handle_websocket_close(self.websocket_connection_id)
except Exception:
self.log.exception('Error in WebSocket close handler')
# Try to write a close frame, just once
try:
if self.send_buf is None and not self.ws_close_sent:
self.websocket_close(SHUTTING_DOWN, 'Shutting down')
with self.cf_lock:
self.write(self.control_frames.pop())
except Exception:
pass
Connection.close(self)
else:
HTTPConnection.close(self)
