disconnect method
void
disconnect()
Disconnect the WebSocket
Implementation
void disconnect() {
log.d('ByBitWebSocket.disconnect()');
if (pingTimer != null) {
pingTimer!.cancel();
}
if (websocket != null) {
websocket!.sink.close(status.goingAway);
} else {
log.e('was already disconnected');
}
pingTimer = null;
websocket = null;
controller = null;
transformer = null;
timeoutTimer = null;
}