/**
* The user closes the connection.
*
* <p>Note: you can't send messages to the client from this method
*/
@OnClose
public void onClose(Session session) {
serverStateHolder.removeSession(session);
}
/**
* @OnOpen allows us to intercept the creation of a new session. The session class allows us to
* send data to the user. In the method onOpen, we'll let the user know that the handshake was
* successful.
*/
@OnOpen
public void onOpen(Session session) {
serverStateHolder.addInitSession(session);
}