Eu tentei migrar do Corda Server para o Spring Boot. Mencionei o Joel's Project (oficial do Corda) no Kotlin, mas obtendo essa exceção ao tentar usar o rpcOps.

RPCClientProxyHandler.artemisMessageHandler - RPC reply arrived to unknown RPC ID RpcRequestId(toLong=2111196934580277300), this indicates an internal RPC error.
        [ERROR] 2018-02-02T07:54:05,227 [Thread-0 (ActiveMQ-client-global-threads)] client - AMQ214000: Failed to call onMessage
    com.esotericsoftware.kryo.KryoException: java.lang.IllegalArgumentException: Privacy salt should be 32 bytes.
    Serialization trace:
    legalIdentitiesAndCerts (net.corda.core.node.NodeInfo)
    value (net.corda.core.utilities.Try$Success)
        at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:144) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.CompatibleFieldSerializer.read(CompatibleFieldSerializer.java:147) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:813) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.CompatibleFieldSerializer.read(CompatibleFieldSerializer.java:147) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:813) ~[kryo-4.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme$deserialize$inlined$use$lambdaAbaixo está o meu RPConnector:1.invoke(SerializationScheme.kt:209) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme$deserialize$inlined$use$lambdaAbaixo está o meu RPConnector:1.invoke(SerializationScheme.kt:152) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme.withContext(SerializationScheme.kt:191) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme.access$withContext(SerializationScheme.kt:152) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme$deserialize$inlined$use$lambda$1.execute(SerializationScheme.kt:206) ~[corda-node-api-2.0.0.jar:?]
        at com.esotericsoftware.kryo.pool.KryoPoolQueueImpl.run(KryoPoolQueueImpl.java:61) ~[kryo-4.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme.deserialize(SerializationScheme.kt:205) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$deserializeAbaixo está o meu RPConnector:1.invoke(SerializationScheme.kt:115) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.core.serialization.SerializationFactory.withCurrentContext(SerializationAPI.kt:53) ~[corda-core-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$deserialize$1.invoke(SerializationScheme.kt:115) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$deserialize$1.invoke(SerializationScheme.kt:95) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.core.serialization.SerializationFactory.asCurrent(SerializationAPI.kt:67) ~[corda-core-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl.deserialize(SerializationScheme.kt:115) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.RPCApi$ServerToClient$Companion.fromClientMessage(RPCApi.kt:234) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.client.rpc.internal.RPCClientProxyHandler.artemisMessageHandler(RPCClientProxyHandler.kt:242) ~[corda-rpc-2.0.0.jar:?]
        at net.corda.client.rpc.internal.RPCClientProxyHandler.access$artemisMessageHandler(RPCClientProxyHandler.kt:65) ~[corda-rpc-2.0.0.jar:?]
        at net.corda.client.rpc.internal.RPCClientProxyHandler$start$3.invoke(RPCClientProxyHandler.kt:192) ~[corda-rpc-2.0.0.jar:?]
        at net.corda.client.rpc.internal.RPCClientProxyHandler$start$3.invoke(RPCClientProxyHandler.kt:65) ~[corda-rpc-2.0.0.jar:?]
        at net.corda.client.rpc.internal.RPCClientProxyHandlerKt$sam$MessageHandler$cbde6789.onMessage(RPCClientProxyHandler.kt) ~[corda-rpc-2.0.0.jar:?]
        at org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.callOnMessage(ClientConsumerImpl.java:997) ~[artemis-core-client-2.1.0.jar:2.1.0]
        at org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.access$400(ClientConsumerImpl.java:49) ~[artemis-core-client-2.1.0.jar:2.1.0]
        at org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl$Runner.run(ClientConsumerImpl.java:1120) [artemis-core-client-2.1.0.jar:2.1.0]
        at org.apache.activemq.artemis.utils.OrderedExecutorFactory$OrderedExecutor$ExecutorTask.run(OrderedExecutorFactory.java:101) [artemis-commons-2.1.0.jar:2.1.0]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_144]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_144]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]
    Caused by: java.lang.IllegalArgumentException: Privacy salt should be 32 bytes.
        at net.corda.core.contracts.PrivacySalt.<init>(Structures.kt:272) ~[corda-core-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.DefaultKryoCustomizer$PrivacySaltSerializer.read(DefaultKryoCustomizer.kt:188) ~[corda-node-api-2.0.0.jar:?]
        at net.corda.nodeapi.internal.serialization.DefaultKryoCustomizer$PrivacySaltSerializer.read(DefaultKryoCustomizer.kt:182) ~[corda-node-api-2.0.0.jar:?]
        at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:813) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731) ~[kryo-4.0.0.jar:?]
        at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125) ~[kryo-4.0.0.jar:?]
        ... 34 more

Abaixo está o meu RPConnector:

private CordaRPCOps rpcOps;

    @PostConstruct
    private void init() {
        System.out.println("RPConnector [host=" + host + ", username=" + username + ", password=" + password
                + ", rpcPort=" + rpcPort + "]");
        NetworkHostAndPort rpcAddress = new NetworkHostAndPort(host, Integer.valueOf(rpcPort));
        CordaRPCClient rpcClient = new CordaRPCClient(rpcAddress);
        CordaRPCConnection rpcConnection = rpcClient.start(username, password);
        rpcOps = rpcConnection.getProxy();
    }

    public CordaRPCOps getRPCops() {
        return rpcOps;
    }

A conexão ocorre com êxito, mas quando tento usar o conector RPC, obtenho o seguinte erro: Abaixo está o meu controlador. Quando tento obter todos os nós, recebo o erro:

@Autowired
private RPConnector rpcOps;
private final List<String> serviceNames = ImmutableList.of("Controller", "Network Map Service");

@GetMapping("/allnodes")
@Produces(MediaType.APPLICATION_JSON)
public Map<String, List<CordaX500Name>> getAllNodes() {
    List<NodeInfo> nodeInfoSnapshot = rpcOps.getRPCops().networkMapSnapshot();
    return ImmutableMap.of("allnodes",
            nodeInfoSnapshot.stream().map(node -> node.getLegalIdentities().get(0).getName()).filter(
                    name -> !name.equals(rpcOps.getRPCops().nodeInfo().getLegalIdentities().get(0).getName())
                            && !serviceNames.contains(name.getOrganisation()))
                    .collect(toList()));
}

Obrigado.

Atualização em erro, há uma exceção de ponteiro nulo:

java.lang.NullPointerException
    at net.corda.core.serialization.SerializedBytes.getHash(SerializationAPI.kt)
    at net.corda.core.serialization.SerializedBytes.<init>(SerializationAPI.kt:201)
    at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme$serializeAbaixo está o meu RPConnector:1.invoke(SerializationScheme.kt:233)
    at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme$serializeAbaixo está o meu RPConnector:1.invoke(SerializationScheme.kt:152)
    at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme.withContext(SerializationScheme.kt:191)
    at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme.access$withContext(SerializationScheme.kt:152)
    at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme$serialize$1.execute(SerializationScheme.kt:221)
    at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme$serialize$1.execute(SerializationScheme.kt:152)
    at com.esotericsoftware.kryo.pool.KryoPoolQueueImpl.run(KryoPoolQueueImpl.java:61)
    at net.corda.nodeapi.internal.serialization.AbstractKryoSerializationScheme.serialize(SerializationScheme.kt:220)
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$serializeAbaixo está o meu RPConnector:1.invoke(SerializationScheme.kt:119)
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$serializeAbaixo está o meu RPConnector:1.invoke(SerializationScheme.kt:95)
    at net.corda.core.serialization.SerializationFactory.withCurrentContext(SerializationAPI.kt:53)
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$serialize$1.invoke(SerializationScheme.kt:119)
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$serialize$1.invoke(SerializationScheme.kt:95)
    at net.corda.core.serialization.SerializationFactory.asCurrent(SerializationAPI.kt:67)
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl.serialize(SerializationScheme.kt:119)
    at net.corda.core.serialization.SerializationAPIKt.serialize(SerializationAPI.kt:191)
    at net.corda.core.serialization.SerializationAPIKt.serialize$default(SerializationAPI.kt:190)
    at net.corda.nodeapi.RPCApi$ClientToServer$RpcRequest.writeToClientMessage(RPCApi.kt:113)
    at net.corda.client.rpc.internal.RPCClientProxyHandler.invoke(RPCClientProxyHandler.kt:215)
    at com.sun.proxy.$Proxy22.networkMapSnapshot(Unknown Source)