Websocket connection is lost without notifying client

[rgupt102]

I am using async http websocket client to send requests and I have observed many times that connection is lost without calling onClose callback. websocket stays open (websokcet.isOpen still true)but no requests are sent to server. A connection interrupt doesn't close the Netty websocket and doesn't trigger the disconnected event.
It is difficult to catch the disconnection , so i am not able to retry for the connection. I have retrial logic in onClose callback but for this issue onClose is not event called.
I see there is no support for onConnectionLost as we have in - TooTallNate/Java-WebSocket#473
implementing custom heartbeats through ping/pong would be tricky. please help.