Examples with Configuration org.eclipse.californium.elements.config.Configuration used on opensource projects

Example 26 with Configuration

use of org.eclipse.californium.elements.config.Configuration in project californium by eclipse.

the class MbedTlsServerInteroperabilityTest method testMbedTlsServerMultiFragments.

@Test
public void testMbedTlsServerMultiFragments() throws Exception {
    processUtil.setTag("mbedtls-server, multifragments per record, " + cipherSuite.name());
    String certificate = cipherSuite.getCertificateKeyAlgorithm() == CertificateKeyAlgorithm.RSA ? SERVER_RSA_CERTIFICATE : SERVER_CERTIFICATE;
    String cipher = processUtil.startupServer(ACCEPT, ScandiumUtil.PORT, CHAIN, certificate, null, cipherSuite);
    DtlsConnectorConfig.Builder builder = DtlsConnectorConfig.builder(new Configuration()).set(DtlsConfig.DTLS_ROLE, DtlsRole.CLIENT_ONLY).set(DtlsConfig.DTLS_USE_MULTI_HANDSHAKE_MESSAGE_RECORDS, true);
    scandiumUtil.start(BIND, builder, null, cipherSuite);
    String message = "Hello MbedTLS!";
    scandiumUtil.send(message, DESTINATION, HANDSHAKE_TIMEOUT_MILLIS);
    assertTrue(processUtil.waitConsole("Ciphersuite is " + cipher, TIMEOUT_MILLIS));
    assertTrue(processUtil.waitConsole(message, TIMEOUT_MILLIS));
    // Mbed TLS server responds with HTTP 200, even in DTLS mode
    scandiumUtil.assertContainsReceivedData("HTTP/1.0 200 OK", TIMEOUT_MILLIS);
    processUtil.stop(200);
}

Example 27 with Configuration

use of org.eclipse.californium.elements.config.Configuration in project californium by eclipse.

the class OpenSslServerInteroperabilityTest method testOpenSslServerMultiFragments.

@Test
public void testOpenSslServerMultiFragments() throws Exception {
    processUtil.setTag("openssl-server, multifragments per record, " + cipherSuite.name());
    String certificate = cipherSuite.getCertificateKeyAlgorithm() == CertificateKeyAlgorithm.RSA ? SERVER_RSA_CERTIFICATE : SERVER_CERTIFICATE;
    String cipher = processUtil.startupServer(ACCEPT, CERTIFICATE, certificate, null, null, cipherSuite);
    DtlsConnectorConfig.Builder builder = DtlsConnectorConfig.builder(new Configuration()).set(DtlsConfig.DTLS_ROLE, DtlsRole.CLIENT_ONLY).set(DtlsConfig.DTLS_USE_MULTI_HANDSHAKE_MESSAGE_RECORDS, true);
    scandiumUtil.start(BIND, builder, null, cipherSuite);
    String message = "Hello OpenSSL!";
    scandiumUtil.send(message, DESTINATION, HANDSHAKE_TIMEOUT_MILLIS);
    assertTrue(processUtil.waitConsole("CIPHER is " + cipher, TIMEOUT_MILLIS));
    assertTrue(processUtil.waitConsole(message, TIMEOUT_MILLIS));
    processUtil.send("ACK-" + message);
    scandiumUtil.assertReceivedData("ACK-" + message, TIMEOUT_MILLIS);
    processUtil.stop(TIMEOUT_MILLIS);
}

Example 28 with Configuration

use of org.eclipse.californium.elements.config.Configuration in project californium by eclipse.

the class ExtendedTestServer method addEndpoint.

private void addEndpoint(InetSocketAddress dtlsInterface, BaseConfig cliConfig) {
    InterfaceType interfaceType = dtlsInterface.getAddress().isLoopbackAddress() ? InterfaceType.LOCAL : InterfaceType.EXTERNAL;
    Configuration configuration = getConfig(Protocol.DTLS, interfaceType);
    String tag = "dtls:" + StringUtil.toString(dtlsInterface);
    int handshakeResultDelayMillis = configuration.getTimeAsInt(DTLS_HANDSHAKE_RESULT_DELAY, TimeUnit.MILLISECONDS);
    long healthStatusIntervalMillis = configuration.get(SystemConfig.HEALTH_STATUS_INTERVAL, TimeUnit.MILLISECONDS);
    Integer cidLength = configuration.get(DtlsConfig.DTLS_CONNECTION_ID_LENGTH);
    if (cidLength == null || cidLength < 6) {
        throw new IllegalArgumentException("cid length must be at least 6 for cluster!");
    }
    initCredentials();
    DtlsConnectorConfig.Builder dtlsConfigBuilder = DtlsConnectorConfig.builder(configuration);
    if (cliConfig.clientAuth != null) {
        dtlsConfigBuilder.set(DtlsConfig.DTLS_CLIENT_AUTHENTICATION_MODE, cliConfig.clientAuth);
    }
    AsyncAdvancedPskStore asyncPskStore = new AsyncAdvancedPskStore(new PlugPskStore());
    asyncPskStore.setDelay(handshakeResultDelayMillis);
    dtlsConfigBuilder.setAdvancedPskStore(asyncPskStore);
    dtlsConfigBuilder.setAddress(dtlsInterface);
    X509KeyManager keyManager = SslContextUtil.getX509KeyManager(serverCredentials);
    AsyncKeyManagerCertificateProvider certificateProvider = new AsyncKeyManagerCertificateProvider(keyManager, CertificateType.RAW_PUBLIC_KEY, CertificateType.X_509);
    certificateProvider.setDelay(handshakeResultDelayMillis);
    dtlsConfigBuilder.setCertificateIdentityProvider(certificateProvider);
    AsyncNewAdvancedCertificateVerifier.Builder verifierBuilder = AsyncNewAdvancedCertificateVerifier.builder();
    if (cliConfig.trustall) {
        verifierBuilder.setTrustAllCertificates();
    } else {
        verifierBuilder.setTrustedCertificates(trustedCertificates);
    }
    verifierBuilder.setTrustAllRPKs();
    AsyncNewAdvancedCertificateVerifier verifier = verifierBuilder.build();
    verifier.setDelay(handshakeResultDelayMillis);
    dtlsConfigBuilder.setAdvancedCertificateVerifier(verifier);
    dtlsConfigBuilder.setConnectionListener(new MdcConnectionListener());
    dtlsConfigBuilder.setLoggingTag(tag);
    if (healthStatusIntervalMillis > 0) {
        DtlsHealthLogger health = new DtlsHealthLogger(tag);
        dtlsConfigBuilder.setHealthHandler(health);
        add(health);
        // reset to prevent active logger
        dtlsConfigBuilder.set(SystemConfig.HEALTH_STATUS_INTERVAL, 0, TimeUnit.MILLISECONDS);
    }
    DtlsConnectorConfig dtlsConnectorConfig = dtlsConfigBuilder.build();
    CoapEndpoint.Builder builder = new CoapEndpoint.Builder();
    builder.setConnector(new DTLSConnector(dtlsConnectorConfig));
    builder.setConfiguration(dtlsConnectorConfig.getConfiguration());
    CoapEndpoint endpoint = builder.build();
    addEndpoint(endpoint);
    print(endpoint, interfaceType);
}

Example 29 with Configuration

use of org.eclipse.californium.elements.config.Configuration in project californium by eclipse.

the class ExtendedTestServer method main.

public static void main(String[] args) {
    CommandLine cmd = new CommandLine(config);
    config.register(cmd);
    try {
        ParseResult result = cmd.parseArgs(args);
        if (result.isVersionHelpRequested()) {
            System.out.println("\nCalifornium (Cf) " + cmd.getCommandName() + " " + PlugtestServer.CALIFORNIUM_BUILD_VERSION);
            cmd.printVersionHelp(System.out);
            System.out.println();
        }
        if (result.isUsageHelpRequested()) {
            cmd.usage(System.out);
            return;
        }
    } catch (ParameterException ex) {
        System.err.println(ex.getMessage());
        System.err.println();
        cmd.usage(System.err);
        System.exit(-1);
    }
    STATISTIC_LOGGER.error("start!");
    ManagementStatistic management = new ManagementStatistic(STATISTIC_LOGGER);
    try {
        K8sManagementClient k8sClient = null;
        K8sDiscoverClient k8sGroup = null;
        DtlsClusterConnectorConfig.Builder clusterConfigBuilder = DtlsClusterConnectorConfig.builder();
        Configuration configuration = Configuration.createWithFile(CONFIG_FILE, CONFIG_HEADER, DEFAULTS);
        if (config.cluster != null) {
            int nodeId = -1;
            clusterConfigBuilder.setBackwardMessage(config.cluster.backwardClusterMessages);
            if (config.cluster.clusterType.k8sCluster != null) {
                clusterConfigBuilder.setAddress(config.cluster.clusterType.k8sCluster.cluster);
                clusterConfigBuilder.setClusterMac(config.cluster.dtlsClusterMac);
                K8sDiscoverClient.setConfiguration(clusterConfigBuilder);
                k8sClient = new K8sManagementJdkClient();
                k8sGroup = new K8sDiscoverClient(k8sClient, config.cluster.clusterType.k8sCluster.externalPort);
                nodeId = k8sGroup.getNodeID();
                LOGGER.info("dynamic k8s-cluster!");
            } else if (config.cluster.clusterType.simpleCluster != null) {
                for (ClusterNode cluster : config.cluster.clusterType.simpleCluster.dtlsClusterNodes) {
                    if (cluster.dtls != null) {
                        nodeId = cluster.nodeId;
                        break;
                    }
                }
                if (nodeId < 0) {
                    throw new IllegalArgumentException("at least one cluster node must have a dtls interface!");
                }
                if (config.cluster.clusterType.simpleCluster.dtlsClusterGroup != null) {
                    LOGGER.info("dynamic dtls-cluster!");
                    String secret = config.cluster.clusterType.simpleCluster.dtlsClusterGroupSecurity;
                    if (secret != null) {
                        SecretKey key = SecretUtil.create(secret.getBytes(), "PSK");
                        clusterConfigBuilder.setSecure("dtls-mgmt", key);
                        SecretUtil.destroy(key);
                        clusterConfigBuilder.setClusterMac(config.cluster.dtlsClusterMac);
                    }
                } else {
                    LOGGER.info("static dtls-cluster!");
                }
            }
            configuration.set(DtlsConfig.DTLS_CONNECTION_ID_NODE_ID, nodeId);
        } else if (config.plugtest) {
            // start standard plugtest server
            PlugtestServer.init(config);
        }
        Configuration udpConfiguration = new Configuration(configuration).set(CoapConfig.MAX_MESSAGE_SIZE, configuration.get(EXTERNAL_UDP_MAX_MESSAGE_SIZE)).set(CoapConfig.PREFERRED_BLOCK_SIZE, configuration.get(EXTERNAL_UDP_PREFERRED_BLOCK_SIZE));
        Map<Select, Configuration> protocolConfig = new HashMap<>();
        protocolConfig.put(new Select(Protocol.UDP, InterfaceType.EXTERNAL), udpConfiguration);
        // create server
        List<Protocol> protocols = config.getProtocols();
        List<InterfaceType> types = config.getInterfaceTypes();
        ScheduledExecutorService executor = // 
        ExecutorsUtil.newScheduledThreadPool(// 
        configuration.get(CoapConfig.PROTOCOL_STAGE_THREAD_COUNT), // $NON-NLS-1$
        new NamedThreadFactory("ExtCoapServer(main)#"));
        ScheduledExecutorService secondaryExecutor = ExecutorsUtil.newDefaultSecondaryScheduler("ExtCoapServer(secondary)#");
        long notifyIntervalMillis = config.getNotifyIntervalMillis();
        final ExtendedTestServer server = new ExtendedTestServer(configuration, protocolConfig, config.benchmark, notifyIntervalMillis);
        server.setVersion(PlugtestServer.CALIFORNIUM_BUILD_VERSION);
        server.setTag("EXTENDED-TEST");
        server.setExecutors(executor, secondaryExecutor, false);
        server.add(new Echo(configuration.get(CoapConfig.MAX_RESOURCE_BODY_SIZE), config.echoDelay ? executor : null));
        if (config.diagnose) {
            server.add(new Diagnose(server));
        }
        server.add(new ReverseRequest(configuration, executor));
        ReverseObserve reverseObserver = new ReverseObserve(configuration, executor);
        server.add(reverseObserver);
        if (k8sGroup != null) {
            DtlsClusterConnectorConfig clusterConfig = clusterConfigBuilder.build();
            server.addClusterEndpoint(secondaryExecutor, config.cluster.clusterType.k8sCluster.dtls, k8sGroup.getNodeID(), clusterConfig, null, k8sGroup, config);
        } else if (config.cluster != null && config.cluster.clusterType.simpleCluster != null) {
            ClusterGroup group = null;
            DtlsClusterConnector.ClusterNodesProvider nodes = null;
            if (config.cluster.clusterType.simpleCluster.dtlsClusterGroup == null) {
                nodes = new DtlsClusterConnector.ClusterNodesProvider() {

                    @Override
                    public InetSocketAddress getClusterNode(int nodeId) {
                        for (ClusterNode node : config.cluster.clusterType.simpleCluster.dtlsClusterNodes) {
                            if (node.nodeId == nodeId) {
                                return node.cluster;
                            }
                        }
                        return null;
                    }

                    @Override
                    public boolean available(InetSocketAddress destinationConnector) {
                        return true;
                    }
                };
            }
            for (ClusterNode cluster : config.cluster.clusterType.simpleCluster.dtlsClusterNodes) {
                if (cluster.dtls != null) {
                    DtlsClusterConnectorConfig clusterConfig = DtlsClusterConnectorConfig.builder(clusterConfigBuilder.getIncompleteConfig()).setAddress(cluster.cluster).build();
                    if (config.cluster.clusterType.simpleCluster.dtlsClusterGroup != null) {
                        group = new ClusterGroup(config.cluster.clusterType.simpleCluster.dtlsClusterGroup);
                    }
                    server.addClusterEndpoint(secondaryExecutor, cluster.dtls, cluster.nodeId, clusterConfig, nodes, group, config);
                }
            }
        } else if (config.restore != null) {
            // restore the dtls state from an other host with different
            // local network addresses,
            // requires to use the wildcard address for the connector.
            int port = configuration.get(CoapConfig.COAP_SECURE_PORT);
            server.addEndpoint(new InetSocketAddress(port), config);
        }
        // Statistic for dropped udp messages
        final NetSocketHealthLogger socketLogger = new NetSocketHealthLogger("udp");
        EndpointNetSocketObserver socketObserver = null;
        long interval = configuration.get(SystemConfig.HEALTH_STATUS_INTERVAL, TimeUnit.MILLISECONDS);
        if (interval > 0 && socketLogger.isEnabled()) {
            server.add(socketLogger);
            long readInterval = configuration.get(UDP_DROPS_READ_INTERVAL, TimeUnit.MILLISECONDS);
            if (interval > readInterval) {
                secondaryExecutor.scheduleAtFixedRate(new Runnable() {

                    @Override
                    public void run() {
                        socketLogger.read();
                    }
                }, readInterval, readInterval, TimeUnit.MILLISECONDS);
            }
            socketObserver = new EndpointNetSocketObserver(socketLogger);
            server.addDefaultEndpointObserver(socketObserver);
            EndpointNetSocketObserver internalSocketObserver = new EndpointNetSocketObserver(socketLogger) {

                protected SimpleCounterStatistic getExternalStatistic(Endpoint endpoint) {
                    CounterStatisticManager dtlsStatisticManager = getDtlsStatisticManager(endpoint);
                    return dtlsStatisticManager != null ? dtlsStatisticManager.getByKey(DtlsClusterHealthLogger.DROPPED_INTERNAL_UDP_MESSAGES) : null;
                }

                @Override
                protected InetSocketAddress getAddress(Endpoint endpoint) {
                    if (endpoint instanceof CoapEndpoint) {
                        Connector connector = ((CoapEndpoint) endpoint).getConnector();
                        if (connector instanceof DtlsClusterConnector) {
                            return ((DtlsClusterConnector) connector).getClusterInternalAddress();
                        }
                    }
                    return null;
                }
            };
            server.addDefaultEndpointObserver(internalSocketObserver);
        }
        // using cluster removes dtls from protocols
        server.addEndpoints(config.interfacePatterns, types, protocols, config);
        if (server.getEndpoints().isEmpty()) {
            System.err.println("no endpoint available!");
            System.exit(PlugtestServer.ERR_INIT_FAILED);
        }
        for (Endpoint ep : server.getEndpoints()) {
            ep.addNotificationListener(reverseObserver);
        }
        InetSocketAddress httpLocal = config.k8sMonitor;
        InetSocketAddress httpsRestoreLocal = null;
        InetSocketAddress httpsRestoreOther = null;
        SSLContext context = null;
        K8sRestoreJdkHttpClient client = null;
        SSLContext clientContext = null;
        if (config.restore != null) {
            if (config.restore.restoreSource.restoreK8s != null) {
                httpsRestoreLocal = config.restore.restoreSource.restoreK8s;
                httpsRestoreOther = new InetSocketAddress(httpsRestoreLocal.getPort());
            } else if (config.restore.restoreSource.restorePair != null) {
                httpsRestoreLocal = config.restore.restoreSource.restorePair.restoreLocal;
                httpsRestoreOther = config.restore.restoreSource.restorePair.restoreOther;
            }
            context = CredentialsUtil.getClusterInternalHttpsServerContext();
        }
        if (httpLocal != null || httpsRestoreLocal != null) {
            long maxAgeSeconds = config.restore != null ? TimeUnit.HOURS.toSeconds(config.restore.maxAge) : 0;
            final JdkMonitorService monitor = new JdkMonitorService(httpLocal, httpsRestoreLocal, maxAgeSeconds, context);
            monitor.addServer(server);
            if (context != null) {
                clientContext = CredentialsUtil.getClusterInternalHttpsClientContext();
                if (clientContext != null) {
                    client = new K8sRestoreJdkHttpClient();
                    monitor.addComponent(client);
                }
            }
            monitor.start();
        }
        PlugtestServer.add(server);
        PlugtestServer.load(config);
        // start standard plugtest server and shutdown
        PlugtestServer.start(executor, secondaryExecutor, config, configuration, socketObserver, null);
        server.start();
        server.addLogger(!config.benchmark);
        List<CounterStatisticManager> statistics = new ArrayList<>();
        ObserveStatisticLogger obsStatLogger = new ObserveStatisticLogger(server.getTag());
        if (obsStatLogger.isEnabled()) {
            statistics.add(obsStatLogger);
            server.add(obsStatLogger);
            server.setObserveHealth(obsStatLogger);
        }
        Resource child = server.getRoot().getChild(Diagnose.RESOURCE_NAME);
        if (child instanceof Diagnose) {
            ((Diagnose) child).update(statistics);
        }
        PlugtestServer.ActiveInputReader reader = new PlugtestServer.ActiveInputReader();
        if (interval > 0) {
            if (config.ipv4) {
                NetStatLogger netStatLogger = new NetStatLogger("udp", false);
                if (netStatLogger.isEnabled()) {
                    server.add(netStatLogger);
                    LOGGER.info("udp health enabled.");
                } else {
                    LOGGER.warn("udp health not enabled!");
                }
            }
            if (config.ipv6) {
                NetStatLogger netStatLogger = new NetStatLogger("udp6", true);
                if (netStatLogger.isEnabled()) {
                    server.add(netStatLogger);
                    LOGGER.info("udp6 health enabled.");
                } else {
                    LOGGER.warn("udp6 health not enabled!");
                }
            }
        } else {
            interval = 30000;
        }
        Runtime runtime = Runtime.getRuntime();
        long max = runtime.maxMemory();
        StringBuilder builder = new StringBuilder(ExtendedTestServer.class.getSimpleName());
        if (!PlugtestServer.CALIFORNIUM_BUILD_VERSION.isEmpty()) {
            builder.append(", version ").append(PlugtestServer.CALIFORNIUM_BUILD_VERSION);
        }
        builder.append(", ").append(max / (1024 * 1024)).append("MB heap, started ...");
        LOGGER.info("{}", builder);
        while (!server.isReady()) {
            Thread.sleep(500);
        }
        if (httpsRestoreOther != null && client != null) {
            if (config.restore.restoreSource.restoreK8s != null) {
                if (k8sClient == null) {
                    k8sClient = new K8sManagementJdkClient();
                }
                if (k8sGroup != null) {
                    client.restoreCluster(k8sClient, httpsRestoreOther.getPort(), clientContext, server);
                } else {
                    client.restoreSingle(k8sClient, httpsRestoreOther.getPort(), clientContext, server);
                }
            } else {
                String host = StringUtil.toHostString(httpsRestoreOther);
                client.restore(InetAddress.getLocalHost().getHostName(), host, httpsRestoreOther.getPort(), clientContext, server);
            }
        }
        if (!config.benchmark) {
            LOGGER.info("{} without benchmark started ...", ExtendedTestServer.class.getSimpleName());
            for (; ; ) {
                if (PlugtestServer.console(reader, interval)) {
                    break;
                }
                server.dump();
            }
        } else {
            long inputTimeout = interval < 15000 ? interval : 15000;
            long lastGcCount = 0;
            long lastDumpNanos = ClockUtil.nanoRealtime();
            for (; ; ) {
                if (PlugtestServer.console(reader, inputTimeout)) {
                    break;
                }
                if (management.useWarningMemoryUsage()) {
                    long used = runtime.totalMemory() - runtime.freeMemory();
                    int fill = (int) ((used * 100L) / max);
                    if (fill > 80) {
                        LOGGER.info("Maxium heap size: {}M  {}% used.", max / MEGA, fill);
                        LOGGER.info("Heap may exceed! Enlarge the maxium heap size.");
                        LOGGER.info("Or consider to reduce the value of " + CoapConfig.EXCHANGE_LIFETIME);
                        LOGGER.info("in \"{}\" or set", CONFIG_FILE);
                        LOGGER.info("{} to {} or", CoapConfig.DEDUPLICATOR, CoapConfig.NO_DEDUPLICATOR);
                        LOGGER.info("{} in that file.", CoapConfig.PEERS_MARK_AND_SWEEP_MESSAGES);
                    }
                }
                long gcCount = management.getCollectionCount();
                if (lastGcCount < gcCount) {
                    management.printManagementStatistic();
                    lastGcCount = gcCount;
                    long clones = DatagramWriter.COPIES.get();
                    long takes = DatagramWriter.TAKES.get();
                    if (clones + takes > 0) {
                        STATISTIC_LOGGER.info("DatagramWriter {} clones, {} takes, {}%", clones, takes, (takes * 100L) / (takes + clones));
                    }
                }
                long now = ClockUtil.nanoRealtime();
                if ((now - lastDumpNanos - TimeUnit.MILLISECONDS.toNanos(interval)) > 0) {
                    lastDumpNanos = now;
                    server.dump();
                }
            }
        }
        PlugtestServer.shutdown();
        server.stop();
        LOGGER.info("Executor shutdown ...");
        ExecutorsUtil.shutdownExecutorGracefully(500, executor, secondaryExecutor);
        PlugtestServer.exit();
        LOGGER.info("Exit ...");
    } catch (Exception e) {
        System.err.printf("Failed to create " + ExtendedTestServer.class.getSimpleName() + ": %s\n", e.getMessage());
        e.printStackTrace(System.err);
        System.err.println("Exiting");
        System.exit(PlugtestServer.ERR_INIT_FAILED);
    }
}

Example 30 with Configuration

use of org.eclipse.californium.elements.config.Configuration in project californium by eclipse.

the class Diagnose method handleGET.

@Override
public void handleGET(CoapExchange exchange) {
    Response response = new Response(CHANGED);
    Integer maxConnections = null;
    Integer nodeId = null;
    List<CounterStatisticManager> healths = endpointHealth;
    Endpoint endpoint = exchange.advanced().getEndpoint();
    if (endpoint != null) {
        if (CoAP.COAP_SECURE_URI_SCHEME.equalsIgnoreCase(endpoint.getUri().getScheme())) {
            Configuration config = endpoint.getConfig();
            maxConnections = config.get(DtlsConfig.DTLS_MAX_CONNECTIONS);
            nodeId = config.get(DtlsConfig.DTLS_CONNECTION_ID_NODE_ID);
        }
        if (endpointsHealth != null) {
            healths = endpointsHealth.get(endpoint.getAddress());
        }
    }
    switch(exchange.getRequestOptions().getAccept()) {
        case UNDEFINED:
        case TEXT_PLAIN:
            response.getOptions().setContentFormat(TEXT_PLAIN);
            response.setPayload(toText(maxConnections, nodeId, healths));
            break;
        case APPLICATION_JSON:
            response.getOptions().setContentFormat(APPLICATION_JSON);
            response.setPayload(toJson(maxConnections, nodeId, healths));
            break;
        case APPLICATION_CBOR:
            response.getOptions().setContentFormat(APPLICATION_CBOR);
            response.setPayload(toCbor(maxConnections, nodeId, healths));
            break;
        default:
            response = new Response(NOT_ACCEPTABLE);
            break;
    }
    exchange.respond(response);
}