'Send missed notifications to a client when webscoket connection is made

I am developing a chat application with django channels. But I have a problem. How can I make client application sync with the server. If the client application disconnect and reconnect it will lose the changes. How can I make the client application synced with the server. Sorry for bad english.



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source