netty-websocket-spring-boot-starter

	<dependency>
		<groupId>org.yeauty</groupId>
		<artifactId>netty-websocket-spring-boot-starter</artifactId>
		<version>0.12.0</version>
	</dependency>

@ServerEndpoint(path = "/ws/{arg}")
public class MyWebSocket {

    @BeforeHandshake
    public void handshake(Session session, HttpHeaders headers, @RequestParam String req, @RequestParam MultiValueMap reqMap, @PathVariable String arg, @PathVariable Map pathMap){
        session.setSubprotocols("stomp");
        if (!"ok".equals(req)){
            System.out.println("Authentication failed!");
            session.close();
        }
    }
    
    @OnOpen
    public void onOpen(Session session, HttpHeaders headers, @RequestParam String req, @RequestParam MultiValueMap reqMap, @PathVariable String arg, @PathVariable Map pathMap){
        System.out.println("new connection");
        System.out.println(req);
    }

    @OnClose
    public void onClose(Session session) throws IOException {
       System.out.println("one connection closed"); 
    }

    @OnError
    public void onError(Session session, Throwable throwable) {
        throwable.printStackTrace();
    }

    @OnMessage
    public void onMessage(Session session, String message) {
        System.out.println(message);
        session.sendText("Hello Netty!");
    }

    @OnBinary
    public void onBinary(Session session, byte[] bytes) {
        for (byte b : bytes) {
            System.out.println(b);
        }
        session.sendBinary(bytes); 
    }

    @OnEvent
    public void onEvent(Session session, Object evt) {
        if (evt instanceof IdleStateEvent) {
            IdleStateEvent idleStateEvent = (IdleStateEvent) evt;
            switch (idleStateEvent.state()) {
                case READER_IDLE:
                    System.out.println("read idle");
                    break;
                case WRITER_IDLE:
                    System.out.println("write idle");
                    break;
                case ALL_IDLE:
                    System.out.println("all idle");
                    break;
                default:
                    break;
            }
        }
    }

}

@ServerEndpoint(host = "${ws.host}",port = "${ws.port}")
public class MyWebSocket {
    ...
}

ws.host=0.0.0.0
ws.port=80

src/
  +- main/
    +- java/
    |   + <source code>
    +- resources/
        +- favicon.ico

src/
  +- main/
    +- java/
    |   + <source code>
    +- resources/
        +- public/
            +- error/
            |   +- 404.html
            |   +- 5xx.html
            +- <other public assets>