AngularConnection.java

package com.ev3.brick;

import java.io.IOException;

import javax.ejb.Singleton;
import javax.inject.Inject;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;

@Singleton
@ServerEndpoint("/angular")
public class AngularConnection {

    @Inject
    BrickConnection BC;

    private Session 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) {
        this.session = session;
        System.out.println(session.getId() + " has opened an angular connection");
        try {
            session.getBasicRemote().sendText("Connection Established");
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    public void sendCommand(String command) throws IOException {
        try {
            session.getBasicRemote().sendText(command);
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    @OnMessage
    public void onMessage(String message, Session session) {
        System.out.println("Message from " + session.getId() + ": " + message);

    }

    @OnClose
    public void onClose(Session session) {
        System.out.println("Session " + session.getId() + " has ended");
    }

}