spring websocket：SubProtocolWebSocketHandler

Question

我有Spring网络套接字的稳定性问题。有时我会遇到与https://jira.spring.io/browse/SPR-12812中描述的类似的例外情况。

补丁不可用，然后我用自定义SubProtocolWebSocketHandler实现了我自己的代码。

public class WBSSubProtocolWebSocketHandler extends SubProtocolWebSocketHandler {

    private static final Logger LOG = LoggerFactory.getLogger(WBSSubProtocolWebSocketHandler.class);

    public WBSSubProtocolWebSocketHandler(MessageChannel clientInboundChannel, SubscribableChannel clientOutboundChannel) {
        super(clientInboundChannel, clientOutboundChannel);
    }

    @Override
    public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
        super.afterConnectionClosed(session, status);
        LOG.debug("WebSocket Connection closed for client with session ID {}", session.getId());
    }

    @Override
    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
        // WebSocketHandlerDecorator could close the session
        // https://jira.spring.io/browse/SPR-12812
        if (!session.isOpen()) {
            LOG.warn("WebSocket Connection established for client with session ID {} was closed.", session.getId());
            return;
        }

        super.afterConnectionEstablished(session);
        LOG.debug("WebSocket Connection established for client with session ID {}", session.getId());
    }

    @Override
    public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
        super.handleTransportError(session, exception);
        LOG.warn("WebSocket transport error for client with session ID {}", session.getId());
    }

    @Override
    public void handleMessage(WebSocketSession session, WebSocketMessage message) throws Exception {
        super.handleMessage(session, message);
        LOG.debug("Websocket incoming message ({}) from client with session ID {}", message.getPayload().toString(), session.getId());
    }

    @Override
    public void handleMessage(Message message) throws MessagingException {
        super.handleMessage(message);
        LOG.debug("Websocket incoming message : {}, header {}", message);
    }

}

现在我的问题是重现异常以查看问题是否已解决。我试过各种方法，但没有成功。我无法重现连接的关闭。有没有人有想法？

我们还有第二个问题。客户端应用程序（angularjs应用程序）有时会报告socket-web连接丢失。但我不明白为什么因为在服务器上我没有日志中的错误/警告。 如何识别问题并重现？