Java SockJS Spring客户端和消息大小

Question

使用SockJS Java客户端，我正在尝试连接到Spring sockjs服务器，并且收到错误消息209（无标题）（错误消息为1009）。Javascript库工作正常。

Transport closed with CloseStatus[code=1009, reason=The decoded text message was too big 
for the output buffer and the endpoint does not support partial messages] in WebSocketClientSockJsSession
[id='9fa30eb453e14a8c8612e1064640646a, url=ws://127.0.0.1:8083/user]

我在服务器上有几个配置类（目前我不知道是否配置这些东西的次数超过了必要）：

@Configuration
@EnableWebSocket
public class WebSocketTransportConfig implements WebSocketConfigurer {
    // Important web socket setup. If big message is coming through, it may overflow the buffer and this will lead in disconnect.
    // All messages that are coming through normally (including snapshots) must be order of magnitude smaller, or connection will be broken
    // sometimes
    // There is also MaxBinaryMessageSize that we do not employ as we use Stomp, but for completeness it is also set to same values.
    // Javadoc http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/socket/adapter/jetty/JettyWebSocketSession.html#setTextMessageSizeLimit-int-

    public static final int MAX_TEXT_MESSAGE_SIZE = 2048000; // 2 Megabytes.
    public static final int BUFFER_SIZE = MAX_TEXT_MESSAGE_SIZE * 5;


    private static final Logger LOGGER = LogManager.getLogger(WebSocketTransportConfig.class);

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {

    }

    @Bean
    public DefaultHandshakeHandler handshakeHandler() {
        LOGGER.info("Websocket buffer size: " + BUFFER_SIZE + " bytes.");
        WebSocketPolicy policy = new WebSocketPolicy(WebSocketBehavior.SERVER);
        policy.setMaxTextMessageBufferSize(BUFFER_SIZE);
        policy.setMaxTextMessageSize(MAX_TEXT_MESSAGE_SIZE);
        policy.setMaxBinaryMessageBufferSize(BUFFER_SIZE);
        policy.setMaxBinaryMessageSize(MAX_TEXT_MESSAGE_SIZE);
        policy.setInputBufferSize( BUFFER_SIZE);
        policy.setIdleTimeout(600000);

        return new DefaultHandshakeHandler(
                new JettyRequestUpgradeStrategy(new WebSocketServerFactory(policy)));
    }
}

和

@Configuration
@EnableWebSocketMessageBroker
@EnableScheduling
public class WebSocketBrokerConfig extends WebSocketMessageBrokerConfigurationSupport implements WebSocketMessageBrokerConfigurer {


    @Override
    public void configureWebSocketTransport(WebSocketTransportRegistration registry) {
        // Increase buffers. 
        // Too little buffers may result in fatal errros when transmitting relatively large messages.
        registry.setMessageSizeLimit(WebSocketTransportConfig.MAX_TEXT_MESSAGE_SIZE);
        registry.setSendBufferSizeLimit(WebSocketTransportConfig.BUFFER_SIZE);
        super.configureWebSocketTransport(registry);
    }
}

根据Stomp的Spring Web套接字消息超出了大小限制，这应该有所帮助，但是在连接Java Spring SockJS客户端时，我仍然收到错误1009（消息太大）。

我怀疑因此可能存在以下两个问题之一：

1. 还必须将Java SockJS客户端配置为接收较大的消息。
2. 或者，我仍然在服务器上配置错误。

如何在Java SockJS Spring客户端上增加缓冲区大小？

Answer 1

我偶然发现了同样的问题。这完全是关于客户端而不是服务器的配置。您可以创建WebSocketContainer实例并对其进行配置。

WebSocketContainer container = ContainerProvider.getWebSocketContainer();
container.setDefaultMaxBinaryMessageBufferSize(your_size);
container.setDefaultMaxTextMessageBufferSize(your_size);
WebSocketClient transport = new StandardWebSocketClient(container);
WebSocketStompClient stompClient = new WebSocketStompClient(transport);

your_size-字节大小。