This is an example of how you can interact with WebSockets in android.

Basic information about libraries which I used in this project:

• OkHttp(v3.5): To call WebSocketsLower versions are not supported for this approach).
• ButterKnife: for binding views
• Android Design: for recyclerview

Quick Explanation:
You just need to extend a WebSocketListener class after that you can override methods to send and receive messages(See WebSocketEcho class in this example).

Here I used ws url(ws:https://echo.websocket.org) to setup websockets but if you want to see server side code you can check my nodejs based websockets implementation in websockets-nodejs repository.