ENT-9806: Prevent Netty threads being blocked due to unresponsive CRL endpoints

core-tests/src/test/kotlin/net/corda/coretests/crypto/internal/ProviderMapTest.kt

@@ -0,0 +1,29 @@
+package net.corda.coretests.crypto.internal
+
+import net.corda.coretesting.internal.DEV_ROOT_CA
+import net.corda.testing.core.createCRL
+import org.assertj.core.api.Assertions.assertThatIllegalArgumentException
+import org.junit.Test
+
+class ProviderMapTest {
+    // https://github.com/corda/corda/pull/3997
+    @Test(timeout = 300_000)
+    fun `verify CRL algorithms`() {
+        val crl = createCRL(
+                issuer = DEV_ROOT_CA,
+                revokedCerts = emptyList(),
+                signatureAlgorithm = "SHA256withECDSA"
+        )
+        // This should pass.
+        crl.verify(DEV_ROOT_CA.keyPair.public)
+
+        // Try changing the algorithm to EC will fail.
+        assertThatIllegalArgumentException().isThrownBy {
+            createCRL(
+                    issuer = DEV_ROOT_CA,
+                    revokedCerts = emptyList(),
+                    signatureAlgorithm = "EC"
+            )
+        }.withMessage("Unknown signature type requested: EC")
+    }
+}

node-api-tests/src/test/kotlin/net/corda/nodeapitests/internal/crypto/X509UtilitiesTest.kt

@@ -21,14 +21,29 @@ import net.corda.core.serialization.deserialize
 import net.corda.core.serialization.serialize
 import net.corda.core.utilities.days
 import net.corda.core.utilities.hours
-import net.corda.nodeapi.internal.serialization.amqp.AMQPServerSerializationScheme
+import net.corda.coretesting.internal.NettyTestClient
+import net.corda.coretesting.internal.NettyTestHandler
+import net.corda.coretesting.internal.NettyTestServer
+import net.corda.coretesting.internal.stubs.CertificateStoreStubs
 import net.corda.nodeapi.internal.config.MutualSslConfiguration
 import net.corda.nodeapi.internal.createDevNodeCa
+import net.corda.nodeapi.internal.crypto.CertificateType
+import net.corda.nodeapi.internal.crypto.X509CertificateFactory
+import net.corda.nodeapi.internal.crypto.X509Utilities
 import net.corda.nodeapi.internal.crypto.X509Utilities.DEFAULT_IDENTITY_SIGNATURE_SCHEME
 import net.corda.nodeapi.internal.crypto.X509Utilities.DEFAULT_TLS_SIGNATURE_SCHEME
+import net.corda.nodeapi.internal.crypto.checkValidity
+import net.corda.nodeapi.internal.crypto.getSupportedKey
+import net.corda.nodeapi.internal.crypto.loadOrCreateKeyStore
+import net.corda.nodeapi.internal.crypto.save
+import net.corda.nodeapi.internal.crypto.toBc
+import net.corda.nodeapi.internal.crypto.x509
+import net.corda.nodeapi.internal.crypto.x509Certificates
 import net.corda.nodeapi.internal.installDevNodeCaCertPath
-import net.corda.nodeapi.internal.protonwrapper.netty.init
+import net.corda.nodeapi.internal.protonwrapper.netty.keyManagerFactory
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactory
 import net.corda.nodeapi.internal.registerDevP2pCertificates
+import net.corda.nodeapi.internal.serialization.amqp.AMQPServerSerializationScheme
 import net.corda.serialization.internal.AllWhitelist
 import net.corda.serialization.internal.SerializationContextImpl
 import net.corda.serialization.internal.SerializationFactoryImpl
@@ -37,25 +52,16 @@ import net.corda.testing.core.ALICE_NAME
 import net.corda.testing.core.BOB_NAME
 import net.corda.testing.core.TestIdentity
 import net.corda.testing.driver.internal.incrementalPortAllocation
-import net.corda.coretesting.internal.NettyTestClient
-import net.corda.coretesting.internal.NettyTestHandler
-import net.corda.coretesting.internal.NettyTestServer
-import net.corda.testing.internal.createDevIntermediateCaCertPath
-import net.corda.coretesting.internal.stubs.CertificateStoreStubs
-import net.corda.nodeapi.internal.crypto.CertificateType
-import net.corda.nodeapi.internal.crypto.X509CertificateFactory
-import net.corda.nodeapi.internal.crypto.X509Utilities
-import net.corda.nodeapi.internal.crypto.checkValidity
-import net.corda.nodeapi.internal.crypto.getSupportedKey
-import net.corda.nodeapi.internal.crypto.loadOrCreateKeyStore
-import net.corda.nodeapi.internal.crypto.save
-import net.corda.nodeapi.internal.crypto.toBc
-import net.corda.nodeapi.internal.crypto.x509
-import net.corda.nodeapi.internal.crypto.x509Certificates
 import net.corda.testing.internal.IS_OPENJ9
+import net.corda.testing.internal.createDevIntermediateCaCertPath
 import net.i2p.crypto.eddsa.EdDSAPrivateKey
 import org.assertj.core.api.Assertions.assertThat
-import org.bouncycastle.asn1.x509.*
+import org.bouncycastle.asn1.x509.AuthorityKeyIdentifier
+import org.bouncycastle.asn1.x509.BasicConstraints
+import org.bouncycastle.asn1.x509.CRLDistPoint
+import org.bouncycastle.asn1.x509.Extension
+import org.bouncycastle.asn1.x509.KeyUsage
+import org.bouncycastle.asn1.x509.SubjectKeyIdentifier
 import org.bouncycastle.jcajce.provider.asymmetric.edec.BCEdDSAPrivateKey
 import org.bouncycastle.pqc.jcajce.provider.sphincs.BCSphincs256PrivateKey
 import org.junit.Assume
@@ -74,10 +80,19 @@ import java.security.PrivateKey
 import java.security.cert.CertPath
 import java.security.cert.X509Certificate
 import java.util.*
-import javax.net.ssl.*
+import javax.net.ssl.SSLContext
+import javax.net.ssl.SSLParameters
+import javax.net.ssl.SSLServerSocket
+import javax.net.ssl.SSLSocket
 import javax.security.auth.x500.X500Principal
 import kotlin.concurrent.thread
-import kotlin.test.*
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertFalse
+import kotlin.test.assertNotNull
+import kotlin.test.assertNull
+import kotlin.test.assertTrue
+import kotlin.test.fail
 
 class X509UtilitiesTest {
     private companion object {
@@ -295,15 +310,10 @@ class X509UtilitiesTest {
         sslConfig.keyStore.get(true).registerDevP2pCertificates(MEGA_CORP.name, rootCa.certificate, intermediateCa)
         sslConfig.createTrustStore(rootCa.certificate)
 
-        val keyStore = sslConfig.keyStore.get()
-        val trustStore = sslConfig.trustStore.get()
-
         val context = SSLContext.getInstance("TLS")
-        val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        keyManagerFactory.init(keyStore)
+        val keyManagerFactory = keyManagerFactory(sslConfig.keyStore.get())
         val keyManagers = keyManagerFactory.keyManagers
-        val trustMgrFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
-        trustMgrFactory.init(trustStore)
+        val trustMgrFactory = trustManagerFactory(sslConfig.trustStore.get())
         val trustManagers = trustMgrFactory.trustManagers
         context.init(keyManagers, trustManagers, newSecureRandom())
 
@@ -388,15 +398,8 @@ class X509UtilitiesTest {
         sslConfig.keyStore.get(true).registerDevP2pCertificates(MEGA_CORP.name, rootCa.certificate, intermediateCa)
         sslConfig.createTrustStore(rootCa.certificate)
 
-        val keyStore = sslConfig.keyStore.get()
-        val trustStore = sslConfig.trustStore.get()
-
-        val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        keyManagerFactory.init(keyStore)
-
-        val trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
-        trustManagerFactory.init(trustStore)
-
+        val keyManagerFactory = keyManagerFactory(sslConfig.keyStore.get())
+        val trustManagerFactory = trustManagerFactory(sslConfig.trustStore.get())
 
         val sslServerContext = SslContextBuilder
                 .forServer(keyManagerFactory)

node-api/src/main/kotlin/net/corda/nodeapi/internal/ArtemisTcpTransport.kt

@@ -1,16 +1,18 @@
+@file:Suppress("LongParameterList")
+
 package net.corda.nodeapi.internal
 
 import net.corda.core.messaging.ClientRpcSslOptions
 import net.corda.core.serialization.internal.nodeSerializationEnv
 import net.corda.core.utilities.NetworkHostAndPort
 import net.corda.nodeapi.BrokerRpcSslOptions
-import net.corda.nodeapi.internal.config.CertificateStore
 import net.corda.nodeapi.internal.config.DEFAULT_SSL_HANDSHAKE_TIMEOUT
 import net.corda.nodeapi.internal.config.MutualSslConfiguration
 import net.corda.nodeapi.internal.config.SslConfiguration
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactory
 import org.apache.activemq.artemis.api.core.TransportConfiguration
 import org.apache.activemq.artemis.core.remoting.impl.netty.TransportConstants
-import java.nio.file.Path
+import javax.net.ssl.TrustManagerFactory
 
 @Suppress("LongParameterList")
 class ArtemisTcpTransport {
@@ -23,6 +25,7 @@ class ArtemisTcpTransport {
         val TLS_VERSIONS = listOf("TLSv1.2")
 
         const val SSL_HANDSHAKE_TIMEOUT_NAME = "Corda-SSLHandshakeTimeout"
+        const val TRUST_MANAGER_FACTORY_NAME = "Corda-TrustManagerFactory"
         const val TRACE_NAME = "Corda-Trace"
         const val THREAD_POOL_NAME_NAME = "Corda-ThreadPoolName"
 
@@ -30,7 +33,6 @@ class ArtemisTcpTransport {
         // Unfortunately we cannot disable core protocol as artemis only uses AMQP for interop.
         // It does not use AMQP messages for its own messages e.g. topology and heartbeats.
         private const val P2P_PROTOCOLS = "CORE,AMQP"
-
         private const val RPC_PROTOCOLS = "CORE"
 
         private fun defaultArtemisOptions(hostAndPort: NetworkHostAndPort, protocols: String) = mapOf(
@@ -39,46 +41,35 @@ class ArtemisTcpTransport {
                 TransportConstants.PORT_PROP_NAME to hostAndPort.port,
                 TransportConstants.PROTOCOLS_PROP_NAME to protocols,
                 TransportConstants.USE_GLOBAL_WORKER_POOL_PROP_NAME to (nodeSerializationEnv != null),
-                TransportConstants.REMOTING_THREADS_PROPNAME to (if (nodeSerializationEnv != null) -1 else 1),
                 // turn off direct delivery in Artemis - this is latency optimisation that can lead to
                 //hick-ups under high load (CORDA-1336)
                 TransportConstants.DIRECT_DELIVER to false)
 
-        private val defaultSSLOptions = mapOf(
-                TransportConstants.ENABLED_CIPHER_SUITES_PROP_NAME to CIPHER_SUITES.joinToString(","),
-                TransportConstants.ENABLED_PROTOCOLS_PROP_NAME to TLS_VERSIONS.joinToString(","))
-
         private fun SslConfiguration.addToTransportOptions(options: MutableMap<String, Any>) {
+            if (keyStore != null || trustStore != null) {
+                options[TransportConstants.SSL_ENABLED_PROP_NAME] = true
+                options[TransportConstants.NEED_CLIENT_AUTH_PROP_NAME] = true
+            }
             keyStore?.let {
                 with (it) {
                     path.requireOnDefaultFileSystem()
-                    options.putAll(get().toKeyStoreTransportOptions(path))
+                    options[TransportConstants.KEYSTORE_PROVIDER_PROP_NAME] = "JKS"
+                    options[TransportConstants.KEYSTORE_PATH_PROP_NAME] = path
+                    options[TransportConstants.KEYSTORE_PASSWORD_PROP_NAME] = get().password
                 }
             }
             trustStore?.let {
                 with (it) {
                     path.requireOnDefaultFileSystem()
-                    options.putAll(get().toTrustStoreTransportOptions(path))
+                    options[TransportConstants.TRUSTSTORE_PROVIDER_PROP_NAME] = "JKS"
+                    options[TransportConstants.TRUSTSTORE_PATH_PROP_NAME] = path
+                    options[TransportConstants.TRUSTSTORE_PASSWORD_PROP_NAME] = get().password
                 }
             }
             options[TransportConstants.SSL_PROVIDER] = if (useOpenSsl) TransportConstants.OPENSSL_PROVIDER else TransportConstants.DEFAULT_SSL_PROVIDER
             options[SSL_HANDSHAKE_TIMEOUT_NAME] = handshakeTimeout ?: DEFAULT_SSL_HANDSHAKE_TIMEOUT
         }
 
-        private fun CertificateStore.toKeyStoreTransportOptions(path: Path) = mapOf(
-                TransportConstants.SSL_ENABLED_PROP_NAME to true,
-                TransportConstants.KEYSTORE_PROVIDER_PROP_NAME to "JKS",
-                TransportConstants.KEYSTORE_PATH_PROP_NAME to path,
-                TransportConstants.KEYSTORE_PASSWORD_PROP_NAME to password,
-                TransportConstants.NEED_CLIENT_AUTH_PROP_NAME to true)
-
-        private fun CertificateStore.toTrustStoreTransportOptions(path: Path) = mapOf(
-                TransportConstants.SSL_ENABLED_PROP_NAME to true,
-                TransportConstants.TRUSTSTORE_PROVIDER_PROP_NAME to "JKS",
-                TransportConstants.TRUSTSTORE_PATH_PROP_NAME to path,
-                TransportConstants.TRUSTSTORE_PASSWORD_PROP_NAME to password,
-                TransportConstants.NEED_CLIENT_AUTH_PROP_NAME to true)
-
         private fun ClientRpcSslOptions.toTransportOptions() = mapOf(
                 TransportConstants.SSL_ENABLED_PROP_NAME to true,
                 TransportConstants.TRUSTSTORE_PROVIDER_PROP_NAME to trustStoreProvider,
@@ -94,50 +85,64 @@ class ArtemisTcpTransport {
 
         fun p2pAcceptorTcpTransport(hostAndPort: NetworkHostAndPort,
                                     config: MutualSslConfiguration?,
+                                    trustManagerFactory: TrustManagerFactory?,
                                     enableSSL: Boolean = true,
                                     threadPoolName: String = "P2PServer",
-                                    trace: Boolean = false): TransportConfiguration {
+                                    trace: Boolean = false,
+                                    remotingThreads: Int? = null): TransportConfiguration {
             val options = mutableMapOf<String, Any>()
             if (enableSSL) {
                 config?.addToTransportOptions(options)
             }
-            return createAcceptorTransport(hostAndPort, P2P_PROTOCOLS, options, enableSSL, threadPoolName, trace)
+            return createAcceptorTransport(
+                    hostAndPort,
+                    P2P_PROTOCOLS,
+                    options,
+                    trustManagerFactory,
+                    enableSSL,
+                    threadPoolName,
+                    trace,
+                    remotingThreads
+            )
         }
 
         fun p2pConnectorTcpTransport(hostAndPort: NetworkHostAndPort,
                                      config: MutualSslConfiguration?,
                                      enableSSL: Boolean = true,
                                      threadPoolName: String = "P2PClient",
-                                     trace: Boolean = false): TransportConfiguration {
+                                     trace: Boolean = false,
+                                     remotingThreads: Int? = null): TransportConfiguration {
             val options = mutableMapOf<String, Any>()
             if (enableSSL) {
                 config?.addToTransportOptions(options)
             }
-            return createConnectorTransport(hostAndPort, P2P_PROTOCOLS, options, enableSSL, threadPoolName, trace)
+            return createConnectorTransport(hostAndPort, P2P_PROTOCOLS, options, enableSSL, threadPoolName, trace, remotingThreads)
         }
 
         fun rpcAcceptorTcpTransport(hostAndPort: NetworkHostAndPort,
                                     config: BrokerRpcSslOptions?,
                                     enableSSL: Boolean = true,
-                                    trace: Boolean = false): TransportConfiguration {
+                                    trace: Boolean = false,
+                                    remotingThreads: Int? = null): TransportConfiguration {
             val options = mutableMapOf<String, Any>()
             if (config != null && enableSSL) {
                 config.keyStorePath.requireOnDefaultFileSystem()
                 options.putAll(config.toTransportOptions())
             }
-            return createAcceptorTransport(hostAndPort, RPC_PROTOCOLS, options, enableSSL, "RPCServer", trace)
+            return createAcceptorTransport(hostAndPort, RPC_PROTOCOLS, options, null, enableSSL, "RPCServer", trace, remotingThreads)
         }
 
         fun rpcConnectorTcpTransport(hostAndPort: NetworkHostAndPort,
                                      config: ClientRpcSslOptions?,
                                      enableSSL: Boolean = true,
-                                     trace: Boolean = false): TransportConfiguration {
+                                     trace: Boolean = false,
+                                     remotingThreads: Int? = null): TransportConfiguration {
             val options = mutableMapOf<String, Any>()
             if (config != null && enableSSL) {
                 config.trustStorePath.requireOnDefaultFileSystem()
                 options.putAll(config.toTransportOptions())
             }
-            return createConnectorTransport(hostAndPort, RPC_PROTOCOLS, options, enableSSL, "RPCClient", trace)
+            return createConnectorTransport(hostAndPort, RPC_PROTOCOLS, options, enableSSL, "RPCClient", trace, remotingThreads)
         }
 
         fun rpcInternalClientTcpTransport(hostAndPort: NetworkHostAndPort,
@@ -145,25 +150,45 @@ class ArtemisTcpTransport {
                                           trace: Boolean = false): TransportConfiguration {
             val options = mutableMapOf<String, Any>()
             config.addToTransportOptions(options)
-            return createConnectorTransport(hostAndPort, RPC_PROTOCOLS, options, true, "Internal-RPCClient", trace)
+            return createConnectorTransport(hostAndPort, RPC_PROTOCOLS, options, true, "Internal-RPCClient", trace, null)
         }
 
         fun rpcInternalAcceptorTcpTransport(hostAndPort: NetworkHostAndPort,
                                             config: SslConfiguration,
-                                            trace: Boolean = false): TransportConfiguration {
+                                            trace: Boolean = false,
+                                            remotingThreads: Int? = null): TransportConfiguration {
             val options = mutableMapOf<String, Any>()
             config.addToTransportOptions(options)
-            return createAcceptorTransport(hostAndPort, RPC_PROTOCOLS, options, true, "Internal-RPCServer", trace)
+            return createAcceptorTransport(
+                    hostAndPort,
+                    RPC_PROTOCOLS,
+                    options,
+                    trustManagerFactory(requireNotNull(config.trustStore).get()),
+                    true,
+                    "Internal-RPCServer",
+                    trace,
+                    remotingThreads
+            )
         }
 
         private fun createAcceptorTransport(hostAndPort: NetworkHostAndPort,
                                             protocols: String,
                                             options: MutableMap<String, Any>,
+                                            trustManagerFactory: TrustManagerFactory?,
                                             enableSSL: Boolean,
                                             threadPoolName: String,
-                                            trace: Boolean): TransportConfiguration {
+                                            trace: Boolean,
+                                            remotingThreads: Int?): TransportConfiguration {
             // Suppress core.server.lambda$channelActive$0 - AMQ224088 error from load balancer type connections
             options[TransportConstants.HANDSHAKE_TIMEOUT] = 0
+            if (trustManagerFactory != null) {
+                // NettyAcceptor only creates default TrustManagerFactorys with the provided trust store details. However, we need to use
+                // more customised instances which use our revocation checkers, which we pass directly into NodeNettyAcceptorFactory.
+                //
+                // This, however, requires copying a lot of code from NettyAcceptor into NodeNettyAcceptor. The version of Artemis in
+                // Corda 4.9 solves this problem by introducing a "trustManagerFactoryPlugin" config option.
+                options[TRUST_MANAGER_FACTORY_NAME] = trustManagerFactory
+            }
             return createTransport(
                     "net.corda.node.services.messaging.NodeNettyAcceptorFactory",
                     hostAndPort,
@@ -171,7 +196,8 @@ class ArtemisTcpTransport {
                     options,
                     enableSSL,
                     threadPoolName,
-                    trace
+                    trace,
+                    remotingThreads
             )
         }
 
@@ -180,7 +206,8 @@ class ArtemisTcpTransport {
                                              options: MutableMap<String, Any>,
                                              enableSSL: Boolean,
                                              threadPoolName: String,
-                                             trace: Boolean): TransportConfiguration {
+                                             trace: Boolean,
+                                             remotingThreads: Int?): TransportConfiguration {
             return createTransport(
                     "net.corda.node.services.messaging.NodeNettyConnectorFactory",
                     hostAndPort,
@@ -188,7 +215,8 @@ class ArtemisTcpTransport {
                     options,
                     enableSSL,
                     threadPoolName,
-                    trace
+                    trace,
+                    remotingThreads
             )
         }
 
@@ -198,11 +226,15 @@ class ArtemisTcpTransport {
                                     options: MutableMap<String, Any>,
                                     enableSSL: Boolean,
                                     threadPoolName: String,
-                                    trace: Boolean): TransportConfiguration {
+                                    trace: Boolean,
+                                    remotingThreads: Int?): TransportConfiguration {
             options += defaultArtemisOptions(hostAndPort, protocols)
             if (enableSSL) {
-                options += defaultSSLOptions
+                options[TransportConstants.ENABLED_CIPHER_SUITES_PROP_NAME] = CIPHER_SUITES.joinToString(",")
+                options[TransportConstants.ENABLED_PROTOCOLS_PROP_NAME] = TLS_VERSIONS.joinToString(",")
             }
+            // By default, use only one remoting thread in tests (https://github.com/corda/corda/pull/2357)
+            options[TransportConstants.REMOTING_THREADS_PROPNAME] = remotingThreads ?: if (nodeSerializationEnv == null) 1 else -1
             options[THREAD_POOL_NAME_NAME] = threadPoolName
             options[TRACE_NAME] = trace
             return TransportConfiguration(className, options)

node-api/src/main/kotlin/net/corda/nodeapi/internal/NodeApiUtils.kt

@@ -0,0 +1,32 @@
+@file:Suppress("LongParameterList", "MagicNumber")
+
+package net.corda.nodeapi.internal
+
+import io.netty.util.concurrent.DefaultThreadFactory
+import net.corda.core.utilities.seconds
+import java.time.Duration
+import java.util.concurrent.BlockingQueue
+import java.util.concurrent.LinkedBlockingQueue
+import java.util.concurrent.ThreadPoolExecutor
+import java.util.concurrent.TimeUnit
+
+/**
+ * Creates a [ThreadPoolExecutor] which will use a maximum of [maxPoolSize] threads at any given time and will by default idle down to 0
+ * threads.
+ */
+fun namedThreadPoolExecutor(maxPoolSize: Int,
+                            corePoolSize: Int = 0,
+                            idleKeepAlive: Duration = 30.seconds,
+                            workQueue: BlockingQueue<Runnable> = LinkedBlockingQueue(),
+                            poolName: String = "pool",
+                            daemonThreads: Boolean = false,
+                            threadPriority: Int = Thread.NORM_PRIORITY): ThreadPoolExecutor {
+    return ThreadPoolExecutor(
+            corePoolSize,
+            maxPoolSize,
+            idleKeepAlive.toNanos(),
+            TimeUnit.NANOSECONDS,
+            workQueue,
+            DefaultThreadFactory(poolName, daemonThreads, threadPriority)
+    )
+}

node-api/src/main/kotlin/net/corda/nodeapi/internal/bridging/AMQPBridgeManager.kt

@@ -100,7 +100,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
     private class AMQPBridge(val sourceX500Name: String,
                              val queueName: String,
                              val targets: List<NetworkHostAndPort>,
-                             val legalNames: Set<CordaX500Name>,
+                             val allowedRemoteLegalNames: Set<CordaX500Name>,
                              private val amqpConfig: AMQPConfiguration,
                              sharedEventGroup: EventLoopGroup,
                              private val artemis: ArtemisSessionProvider,
@@ -116,7 +116,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
                 MDC.put("queueName", queueName)
                 MDC.put("source", amqpConfig.sourceX500Name)
                 MDC.put("targets", targets.joinToString(separator = ";") { it.toString() })
-                MDC.put("legalNames", legalNames.joinToString(separator = ";") { it.toString() })
+                MDC.put("allowedRemoteLegalNames", allowedRemoteLegalNames.joinToString(separator = ";") { it.toString() })
                 MDC.put("maxMessageSize", amqpConfig.maxMessageSize.toString())
                 block()
             } finally {
@@ -134,7 +134,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
 
         private fun logWarnWithMDC(msg: String) = withMDC { log.warn(msg) }
 
-        val amqpClient = AMQPClient(targets, legalNames, amqpConfig, sharedThreadPool = sharedEventGroup)
+        val amqpClient = AMQPClient(targets, allowedRemoteLegalNames, amqpConfig, sharedThreadPool = sharedEventGroup)
         private var session: ClientSession? = null
         private var consumer: ClientConsumer? = null
         private var connectedSubscription: Subscription? = null
@@ -231,7 +231,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
                 }
                 ArtemisState.STOPPING
             }
-            bridgeMetricsService?.bridgeDisconnected(targets, legalNames)
+            bridgeMetricsService?.bridgeDisconnected(targets, allowedRemoteLegalNames)
             connectedSubscription?.unsubscribe()
             connectedSubscription = null
             // Do this last because we already scheduled the Artemis stop, so it's okay to unsubscribe onConnected first.
@@ -243,7 +243,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
             if (connected) {
                 logInfoWithMDC("Bridge Connected")
 
-                bridgeMetricsService?.bridgeConnected(targets, legalNames)
+                bridgeMetricsService?.bridgeConnected(targets, allowedRemoteLegalNames)
                 if (bridgeConnectionTTLSeconds > 0) {
                     // AMQP outbound connection will be restarted periodically with bridgeConnectionTTLSeconds interval
                     amqpRestartEvent = scheduledArtemisInExecutor(bridgeConnectionTTLSeconds.toLong(), TimeUnit.SECONDS,
@@ -286,7 +286,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
                 logInfoWithMDC("Bridge Disconnected")
                 amqpRestartEvent?.cancel(false)
                 if (artemisState != ArtemisState.AMQP_STARTING && artemisState != ArtemisState.STOPPED) {
-                    bridgeMetricsService?.bridgeDisconnected(targets, legalNames)
+                    bridgeMetricsService?.bridgeDisconnected(targets, allowedRemoteLegalNames)
                 }
                 artemis(ArtemisState.STOPPING) { precedingState: ArtemisState ->
                     logInfoWithMDC("Stopping Artemis because AMQP bridge disconnected")
@@ -418,10 +418,10 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
                     properties[key] = value
                 }
             }
-            logDebugWithMDC { "Bridged Send to ${legalNames.first()} uuid: ${artemisMessage.getObjectProperty(MESSAGE_ID_KEY)}" }
+            logDebugWithMDC { "Bridged Send to ${allowedRemoteLegalNames.first()} uuid: ${artemisMessage.getObjectProperty(MESSAGE_ID_KEY)}" }
             val peerInbox = translateLocalQueueToInboxAddress(queueName)
             val sendableMessage = amqpClient.createMessage(artemisMessage.payload(), peerInbox,
-                    legalNames.first().toString(),
+                    allowedRemoteLegalNames.first().toString(),
                     properties)
             sendableMessage.onComplete.then {
                 logDebugWithMDC { "Bridge ACK ${sendableMessage.onComplete.get()}" }
@@ -486,7 +486,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
                         queueNamesToBridgesMap.remove(queueName)
                     }
                     bridge.stop()
-                    bridgeMetricsService?.bridgeDestroyed(bridge.targets, bridge.legalNames)
+                    bridgeMetricsService?.bridgeDestroyed(bridge.targets, bridge.allowedRemoteLegalNames)
                 }
             }
         }
@@ -498,7 +498,7 @@ open class AMQPBridgeManager(keyStore: CertificateStore,
             val bridges = queueNamesToBridgesMap[queueName]?.toList()
             destroyBridge(queueName, bridges?.flatMap { it.targets } ?: emptyList())
             bridges?.map {
-                it.sourceX500Name to BridgeEntry(it.queueName, it.targets, it.legalNames.toList(), serviceAddress = false)
+                it.sourceX500Name to BridgeEntry(it.queueName, it.targets, it.allowedRemoteLegalNames.toList(), serviceAddress = false)
             }?.toMap() ?: emptyMap()
         }
     }

node-api/src/main/kotlin/net/corda/nodeapi/internal/crypto/X509Utilities.kt

@@ -5,16 +5,37 @@ package net.corda.nodeapi.internal.crypto
 import net.corda.core.CordaOID
 import net.corda.core.crypto.Crypto
 import net.corda.core.crypto.newSecureRandom
-import net.corda.core.internal.*
+import net.corda.core.internal.CertRole
+import net.corda.core.internal.SignedDataWithCert
+import net.corda.core.internal.reader
+import net.corda.core.internal.signWithCert
+import net.corda.core.internal.uncheckedCast
+import net.corda.core.internal.validate
+import net.corda.core.internal.writer
 import net.corda.core.utilities.days
 import net.corda.core.utilities.millis
 import net.corda.core.utilities.toHex
 import net.corda.nodeapi.internal.protonwrapper.netty.distributionPointsToString
-import org.bouncycastle.asn1.*
+import org.bouncycastle.asn1.ASN1EncodableVector
+import org.bouncycastle.asn1.ASN1ObjectIdentifier
+import org.bouncycastle.asn1.ASN1Sequence
+import org.bouncycastle.asn1.DERSequence
+import org.bouncycastle.asn1.DERUTF8String
 import org.bouncycastle.asn1.x500.X500Name
 import org.bouncycastle.asn1.x500.style.BCStyle
-import org.bouncycastle.asn1.x509.*
+import org.bouncycastle.asn1.x509.AuthorityKeyIdentifier
+import org.bouncycastle.asn1.x509.BasicConstraints
+import org.bouncycastle.asn1.x509.CRLDistPoint
+import org.bouncycastle.asn1.x509.DistributionPoint
+import org.bouncycastle.asn1.x509.DistributionPointName
 import org.bouncycastle.asn1.x509.Extension
+import org.bouncycastle.asn1.x509.GeneralName
+import org.bouncycastle.asn1.x509.GeneralNames
+import org.bouncycastle.asn1.x509.KeyPurposeId
+import org.bouncycastle.asn1.x509.KeyUsage
+import org.bouncycastle.asn1.x509.NameConstraints
+import org.bouncycastle.asn1.x509.SubjectKeyIdentifier
+import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo
 import org.bouncycastle.cert.X509CertificateHolder
 import org.bouncycastle.cert.X509v3CertificateBuilder
 import org.bouncycastle.cert.bc.BcX509ExtensionUtils
@@ -32,8 +53,13 @@ import java.nio.file.Path
 import java.security.KeyPair
 import java.security.PublicKey
 import java.security.SignatureException
-import java.security.cert.*
+import java.security.cert.CertPath
 import java.security.cert.Certificate
+import java.security.cert.CertificateException
+import java.security.cert.CertificateFactory
+import java.security.cert.TrustAnchor
+import java.security.cert.X509CRL
+import java.security.cert.X509Certificate
 import java.time.Duration
 import java.time.Instant
 import java.time.temporal.ChronoUnit
@@ -359,7 +385,7 @@ object X509Utilities {
 
     private fun addCrlInfo(builder: X509v3CertificateBuilder, crlDistPoint: String?, crlIssuer: X500Name?) {
         if (crlDistPoint != null) {
-            val distPointName = DistributionPointName(GeneralNames(GeneralName(GeneralName.uniformResourceIdentifier, crlDistPoint)))
+            val distPointName = DistributionPointName(toGeneralNames(crlDistPoint, GeneralName.uniformResourceIdentifier))
             val crlIssuerGeneralNames = crlIssuer?.let {
                 GeneralNames(GeneralName(crlIssuer))
             }
@@ -379,6 +405,8 @@ object X509Utilities {
         bytes[0] = bytes[0].and(0x3F).or(0x40)
         return BigInteger(bytes)
     }
+
+    fun toGeneralNames(string: String, tag: Int = GeneralName.directoryName): GeneralNames = GeneralNames(GeneralName(tag, string))
 }
 
 // Assuming cert type to role is 1:1

node-api/src/main/kotlin/net/corda/nodeapi/internal/protonwrapper/netty/AMQPClient.kt

@@ -27,15 +27,14 @@ import net.corda.nodeapi.internal.protonwrapper.messages.SendableMessage
 import net.corda.nodeapi.internal.protonwrapper.messages.impl.SendableMessageImpl
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPChannelHandler.Companion.PROXY_LOGGER_NAME
 import net.corda.nodeapi.internal.requireMessageSize
+import net.corda.nodeapi.internal.revocation.CertDistPointCrlSource
 import rx.Observable
 import rx.subjects.PublishSubject
 import java.lang.Long.min
 import java.net.InetSocketAddress
-import java.security.cert.CertPathValidatorException
+import java.util.concurrent.ExecutorService
 import java.util.concurrent.TimeUnit
 import java.util.concurrent.locks.ReentrantLock
-import javax.net.ssl.KeyManagerFactory
-import javax.net.ssl.TrustManagerFactory
 import kotlin.concurrent.withLock
 
 enum class ProxyVersion {
@@ -63,7 +62,8 @@ class AMQPClient(private val targets: List<NetworkHostAndPort>,
                  val allowedRemoteLegalNames: Set<CordaX500Name>,
                  private val configuration: AMQPConfiguration,
                  private val sharedThreadPool: EventLoopGroup? = null,
-                 private val threadPoolName: String = "AMQPClient") : AutoCloseable {
+                 private val threadPoolName: String = "AMQPClient",
+                 private val distPointCrlSource: CertDistPointCrlSource = CertDistPointCrlSource.SINGLETON) : AutoCloseable {
     companion object {
         init {
             InternalLoggerFactory.setDefaultFactory(Slf4JLoggerFactory.INSTANCE)
@@ -89,12 +89,12 @@ class AMQPClient(private val targets: List<NetworkHostAndPort>,
     private var targetIndex = 0
     private var currentTarget: NetworkHostAndPort = targets.first()
     private var retryInterval = MIN_RETRY_INTERVAL
-    private val revocationChecker = configuration.revocationConfig.createPKIXRevocationChecker()
     private val badCertTargets = mutableSetOf<NetworkHostAndPort>()
     @Volatile
     private var amqpActive = false
     @Volatile
     private var amqpChannelHandler: ChannelHandler? = null
+    private var sslDelegatedTaskExecutor: ExecutorService? = null
 
     val localAddressString: String
         get() = clientChannel?.localAddress()?.toString() ?: "<unknownLocalAddress>"
@@ -150,17 +150,16 @@ class AMQPClient(private val targets: List<NetworkHostAndPort>,
     }
 
     private class ClientChannelInitializer(val parent: AMQPClient) : ChannelInitializer<SocketChannel>() {
-        private val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        private val trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+        private val keyManagerFactory = keyManagerFactory(parent.configuration.keyStore)
+        private val trustManagerFactory = trustManagerFactoryWithRevocation(
+                parent.configuration.trustStore,
+                parent.configuration.revocationConfig,
+                parent.distPointCrlSource
+        )
         private val conf = parent.configuration
         @Volatile
         private lateinit var amqpChannelHandler: AMQPChannelHandler
 
-        init {
-            keyManagerFactory.init(conf.keyStore)
-            trustManagerFactory.init(initialiseTrustStoreAndEnableCrlChecking(conf.trustStore, parent.revocationChecker))
-        }
-
         @Suppress("ComplexMethod")
         override fun initChannel(ch: SocketChannel) {
             val pipeline = ch.pipeline()
@@ -199,10 +198,24 @@ class AMQPClient(private val targets: List<NetworkHostAndPort>,
 
             val wrappedKeyManagerFactory = CertHoldingKeyManagerFactoryWrapper(keyManagerFactory, parent.configuration)
             val target = parent.currentTarget
+            val delegatedTaskExecutor = checkNotNull(parent.sslDelegatedTaskExecutor)
             val handler = if (parent.configuration.useOpenSsl) {
-                createClientOpenSslHandler(target, parent.allowedRemoteLegalNames, wrappedKeyManagerFactory, trustManagerFactory, ch.alloc())
+                createClientOpenSslHandler(
+                        target,
+                        parent.allowedRemoteLegalNames,
+                        wrappedKeyManagerFactory,
+                        trustManagerFactory,
+                        ch.alloc(),
+                        delegatedTaskExecutor
+                )
             } else {
-                createClientSslHandler(target, parent.allowedRemoteLegalNames, wrappedKeyManagerFactory, trustManagerFactory)
+                createClientSslHandler(
+                        target,
+                        parent.allowedRemoteLegalNames,
+                        wrappedKeyManagerFactory,
+                        trustManagerFactory,
+                        delegatedTaskExecutor
+                )
             }
             handler.handshakeTimeoutMillis = conf.sslHandshakeTimeout.toMillis()
             pipeline.addLast("sslHandler", handler)
@@ -260,6 +273,7 @@ class AMQPClient(private val targets: List<NetworkHostAndPort>,
                 return
             }
             log.info("Connect to: $currentTarget")
+            sslDelegatedTaskExecutor = sslDelegatedTaskExecutor(threadPoolName)
             workerGroup = sharedThreadPool ?: NioEventLoopGroup(NUM_CLIENT_THREADS, DefaultThreadFactory(threadPoolName, Thread.MAX_PRIORITY))
             started = true
             restart()
@@ -294,6 +308,8 @@ class AMQPClient(private val targets: List<NetworkHostAndPort>,
             }
             clientChannel = null
             workerGroup = null
+            sslDelegatedTaskExecutor?.shutdown()
+            sslDelegatedTaskExecutor = null
             log.info("Stopped connection to $currentTarget")
         }
     }
@@ -334,6 +350,4 @@ class AMQPClient(private val targets: List<NetworkHostAndPort>,
     private val _onConnection = PublishSubject.create<ConnectionChange>().toSerialized()
     val onConnection: Observable<ConnectionChange>
         get() = _onConnection
-
-    val softFailExceptions: List<CertPathValidatorException> get() = revocationChecker.softFailExceptions
-}
+}

node-api/src/main/kotlin/net/corda/nodeapi/internal/protonwrapper/netty/AMQPServer.kt

@@ -21,16 +21,15 @@ import net.corda.nodeapi.internal.protonwrapper.messages.ReceivedMessage
 import net.corda.nodeapi.internal.protonwrapper.messages.SendableMessage
 import net.corda.nodeapi.internal.protonwrapper.messages.impl.SendableMessageImpl
 import net.corda.nodeapi.internal.requireMessageSize
+import net.corda.nodeapi.internal.revocation.CertDistPointCrlSource
 import org.apache.qpid.proton.engine.Delivery
 import rx.Observable
 import rx.subjects.PublishSubject
 import java.net.BindException
 import java.net.InetSocketAddress
-import java.security.cert.CertPathValidatorException
 import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.ExecutorService
 import java.util.concurrent.locks.ReentrantLock
-import javax.net.ssl.KeyManagerFactory
-import javax.net.ssl.TrustManagerFactory
 import kotlin.concurrent.withLock
 
 /**
@@ -39,37 +38,34 @@ import kotlin.concurrent.withLock
 class AMQPServer(val hostName: String,
                  val port: Int,
                  private val configuration: AMQPConfiguration,
-                 private val threadPoolName: String = "AMQPServer") : AutoCloseable {
+                 private val threadPoolName: String = "AMQPServer",
+                 private val distPointCrlSource: CertDistPointCrlSource = CertDistPointCrlSource.SINGLETON,
+                 private val remotingThreads: Int? = null) : AutoCloseable {
     companion object {
         init {
             InternalLoggerFactory.setDefaultFactory(Slf4JLoggerFactory.INSTANCE)
         }
 
-        private const val CORDA_AMQP_NUM_SERVER_THREAD_PROP_NAME = "net.corda.nodeapi.amqpserver.NumServerThreads"
-
         private val log = contextLogger()
-        private val NUM_SERVER_THREADS = Integer.getInteger(CORDA_AMQP_NUM_SERVER_THREAD_PROP_NAME, 4)
+        private val DEFAULT_REMOTING_THREADS = Integer.getInteger("net.corda.nodeapi.amqpserver.NumServerThreads", 4)
     }
 
     private val lock = ReentrantLock()
-    @Volatile
-    private var stopping: Boolean = false
     private var bossGroup: EventLoopGroup? = null
     private var workerGroup: EventLoopGroup? = null
     private var serverChannel: Channel? = null
-    private val revocationChecker = configuration.revocationConfig.createPKIXRevocationChecker()
+    private var sslDelegatedTaskExecutor: ExecutorService? = null
     private val clientChannels = ConcurrentHashMap<InetSocketAddress, SocketChannel>()
 
     private class ServerChannelInitializer(val parent: AMQPServer) : ChannelInitializer<SocketChannel>() {
-        private val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        private val trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+        private val keyManagerFactory = keyManagerFactory(parent.configuration.keyStore)
+        private val trustManagerFactory = trustManagerFactoryWithRevocation(
+                parent.configuration.trustStore,
+                parent.configuration.revocationConfig,
+                parent.distPointCrlSource
+        )
         private val conf = parent.configuration
 
-        init {
-            keyManagerFactory.init(conf.keyStore.value.internal, conf.keyStore.entryPassword.toCharArray())
-            trustManagerFactory.init(initialiseTrustStoreAndEnableCrlChecking(conf.trustStore, parent.revocationChecker))
-        }
-
         override fun initChannel(ch: SocketChannel) {
             val amqpConfiguration = parent.configuration
             val pipeline = ch.pipeline()
@@ -116,11 +112,12 @@ class AMQPServer(val hostName: String,
                 Pair(createServerSNIOpenSniHandler(keyManagerFactoriesMap, trustManagerFactory), keyManagerFactoriesMap)
             } else {
                 val keyManagerFactory = CertHoldingKeyManagerFactoryWrapper(keyManagerFactory, amqpConfig)
+                val delegatedTaskExecutor = checkNotNull(parent.sslDelegatedTaskExecutor)
                 val handler = if (amqpConfig.useOpenSsl) {
-                    createServerOpenSslHandler(keyManagerFactory, trustManagerFactory, ch.alloc())
+                    createServerOpenSslHandler(keyManagerFactory, trustManagerFactory, ch.alloc(), delegatedTaskExecutor)
                 } else {
                     // For javaSSL, SNI matching is handled at key manager level.
-                    createServerSslHandler(amqpConfig.keyStore, keyManagerFactory, trustManagerFactory)
+                    createServerSslHandler(amqpConfig.keyStore, keyManagerFactory, trustManagerFactory, delegatedTaskExecutor)
                 }
                 handler.handshakeTimeoutMillis = amqpConfig.sslHandshakeTimeout.toMillis()
                 Pair(handler, mapOf(DEFAULT to keyManagerFactory))
@@ -132,8 +129,13 @@ class AMQPServer(val hostName: String,
         lock.withLock {
             stop()
 
+            sslDelegatedTaskExecutor = sslDelegatedTaskExecutor(threadPoolName)
+
             bossGroup = NioEventLoopGroup(1, DefaultThreadFactory("$threadPoolName-boss", Thread.MAX_PRIORITY))
-            workerGroup = NioEventLoopGroup(NUM_SERVER_THREADS, DefaultThreadFactory("$threadPoolName-worker", Thread.MAX_PRIORITY))
+            workerGroup = NioEventLoopGroup(
+                    remotingThreads ?: DEFAULT_REMOTING_THREADS,
+                    DefaultThreadFactory("$threadPoolName-worker", Thread.MAX_PRIORITY)
+            )
 
             val server = ServerBootstrap()
             // TODO Needs more configuration control when we profile. e.g. to use EPOLL on Linux
@@ -154,22 +156,19 @@ class AMQPServer(val hostName: String,
 
     fun stop() {
         lock.withLock {
-            try {
-                stopping = true
-                serverChannel?.apply { close() }
-                serverChannel = null
+            serverChannel?.close()
+            serverChannel = null
 
-                workerGroup?.shutdownGracefully()
-                workerGroup?.terminationFuture()?.sync()
+            workerGroup?.shutdownGracefully()
+            workerGroup?.terminationFuture()?.sync()
+            workerGroup = null
 
-                bossGroup?.shutdownGracefully()
-                bossGroup?.terminationFuture()?.sync()
+            bossGroup?.shutdownGracefully()
+            bossGroup?.terminationFuture()?.sync()
+            bossGroup = null
 
-                workerGroup = null
-                bossGroup = null
-            } finally {
-                stopping = false
-            }
+            sslDelegatedTaskExecutor?.shutdown()
+            sslDelegatedTaskExecutor = null
         }
     }
 
@@ -226,6 +225,4 @@ class AMQPServer(val hostName: String,
     private val _onConnection = PublishSubject.create<ConnectionChange>().toSerialized()
     val onConnection: Observable<ConnectionChange>
         get() = _onConnection
-    
-    val softFailExceptions: List<CertPathValidatorException> get() = revocationChecker.softFailExceptions
 }

node-api/src/main/kotlin/net/corda/nodeapi/internal/protonwrapper/netty/AllowAllRevocationChecker.kt

@@ -31,4 +31,6 @@ object AllowAllRevocationChecker : PKIXRevocationChecker() {
     override fun getSoftFailExceptions(): List<CertPathValidatorException> {
         return Collections.emptyList()
     }
+
+    override fun clone(): AllowAllRevocationChecker = this
 }

node-api/src/main/kotlin/net/corda/nodeapi/internal/protonwrapper/netty/RevocationConfig.kt

@@ -3,9 +3,6 @@ package net.corda.nodeapi.internal.protonwrapper.netty
 import com.typesafe.config.Config
 import net.corda.nodeapi.internal.config.ConfigParser
 import net.corda.nodeapi.internal.config.CustomConfigParser
-import net.corda.nodeapi.internal.revocation.CertDistPointCrlSource
-import net.corda.nodeapi.internal.revocation.CordaRevocationChecker
-import java.security.cert.PKIXRevocationChecker
 
 /**
  * Data structure for controlling the way how Certificate Revocation Lists are handled.
@@ -45,18 +42,6 @@ interface RevocationConfig {
      * Optional [CrlSource] which only makes sense with `mode` = `EXTERNAL_SOURCE`
      */
     val externalCrlSource: CrlSource?
-
-    fun createPKIXRevocationChecker(): PKIXRevocationChecker {
-        return when (mode) {
-            Mode.OFF -> AllowAllRevocationChecker
-            Mode.EXTERNAL_SOURCE -> {
-                val externalCrlSource = requireNotNull(externalCrlSource) { "externalCrlSource must be specfied for EXTERNAL_SOURCE" }
-                CordaRevocationChecker(externalCrlSource, softFail = true)
-            }
-            Mode.SOFT_FAIL -> CordaRevocationChecker(CertDistPointCrlSource(), softFail = true)
-            Mode.HARD_FAIL -> CordaRevocationChecker(CertDistPointCrlSource(), softFail = false)
-        }
-    }
 }
 
 /**

node-api/src/main/kotlin/net/corda/nodeapi/internal/protonwrapper/netty/SSLHelper.kt

@@ -1,3 +1,5 @@
+@file:Suppress("ComplexMethod", "LongParameterList")
+
 package net.corda.nodeapi.internal.protonwrapper.netty
 
 import io.netty.buffer.ByteBufAllocator
@@ -18,6 +20,8 @@ import net.corda.nodeapi.internal.ArtemisTcpTransport
 import net.corda.nodeapi.internal.config.CertificateStore
 import net.corda.nodeapi.internal.crypto.toSimpleString
 import net.corda.nodeapi.internal.crypto.x509
+import net.corda.nodeapi.internal.namedThreadPoolExecutor
+import net.corda.nodeapi.internal.revocation.CordaRevocationChecker
 import org.bouncycastle.asn1.ASN1InputStream
 import org.bouncycastle.asn1.ASN1Primitive
 import org.bouncycastle.asn1.DERIA5String
@@ -34,10 +38,10 @@ import java.net.URI
 import java.security.KeyStore
 import java.security.cert.CertificateException
 import java.security.cert.PKIXBuilderParameters
-import java.security.cert.PKIXRevocationChecker
 import java.security.cert.X509CertSelector
 import java.security.cert.X509Certificate
 import java.util.concurrent.Executor
+import java.util.concurrent.ThreadPoolExecutor
 import javax.net.ssl.CertPathTrustManagerParameters
 import javax.net.ssl.KeyManagerFactory
 import javax.net.ssl.SNIHostName
@@ -46,7 +50,6 @@ import javax.net.ssl.SSLEngine
 import javax.net.ssl.TrustManagerFactory
 import javax.net.ssl.X509ExtendedTrustManager
 import javax.security.auth.x500.X500Principal
-import kotlin.system.measureTimeMillis
 
 private const val HOSTNAME_FORMAT = "%s.corda.net"
 internal const val DEFAULT = "default"
@@ -58,7 +61,6 @@ internal val logger = LoggerFactory.getLogger("net.corda.nodeapi.internal.proton
 /**
  * Returns all the CRL distribution points in the certificate as [URI]s along with the CRL issuer names, if any.
  */
-@Suppress("ComplexMethod")
 fun X509Certificate.distributionPoints(): Map<URI, List<X500Principal>?> {
     logger.debug { "Checking CRLDPs for $subjectX500Principal" }
 
@@ -117,6 +119,14 @@ fun certPathToString(certPath: Array<out X509Certificate>?): String {
     return certPath.joinToString(System.lineSeparator()) { "  ${it.toSimpleString()}" }
 }
 
+/**
+ * Create an executor for processing SSL handshake tasks asynchronously (see [SSLEngine.getDelegatedTask]). The max number of threads is 3,
+ * which is the typical number of CRLs expected in a Corda TLS cert path. The executor needs to be passed to the [SslHandler] constructor.
+ */
+fun sslDelegatedTaskExecutor(parentPoolName: String): ThreadPoolExecutor {
+    return namedThreadPoolExecutor(maxPoolSize = 3, poolName = "$parentPoolName-ssltask")
+}
+
 @VisibleForTesting
 class LoggingTrustManagerWrapper(val wrapped: X509ExtendedTrustManager) : X509ExtendedTrustManager() {
     companion object {
@@ -179,32 +189,11 @@ class LoggingTrustManagerWrapper(val wrapped: X509ExtendedTrustManager) : X509Ex
 
 }
 
-private object LoggingImmediateExecutor : Executor {
-
-    override fun execute(command: Runnable) {
-        val log = LoggerFactory.getLogger(javaClass)
-
-        @Suppress("TooGenericExceptionCaught", "MagicNumber") // log and rethrow all exceptions
-        try {
-            val commandName = command::class.qualifiedName?.let { "[$it]" } ?: ""
-            log.debug("Entering SSL command $commandName")
-            val elapsedTime = measureTimeMillis { command.run() }
-            log.debug("Exiting SSL command $elapsedTime millis")
-            if (elapsedTime > 100) {
-                log.info("Command: $commandName took $elapsedTime millis to execute")
-            }
-        }
-        catch (ex: Exception) {
-            log.error("Caught exception in SSL handler executor", ex)
-            throw ex
-        }
-    }
-}
-
 internal fun createClientSslHandler(target: NetworkHostAndPort,
                                     expectedRemoteLegalNames: Set<CordaX500Name>,
                                     keyManagerFactory: KeyManagerFactory,
-                                    trustManagerFactory: TrustManagerFactory): SslHandler {
+                                    trustManagerFactory: TrustManagerFactory,
+                                    delegateTaskExecutor: Executor): SslHandler {
     val sslContext = createAndInitSslContext(keyManagerFactory, trustManagerFactory)
     val sslEngine = sslContext.createSSLEngine(target.host, target.port)
     sslEngine.useClientMode = true
@@ -216,14 +205,15 @@ internal fun createClientSslHandler(target: NetworkHostAndPort,
         sslParameters.serverNames = listOf(SNIHostName(x500toHostName(expectedRemoteLegalNames.single())))
         sslEngine.sslParameters = sslParameters
     }
-    return SslHandler(sslEngine, false, LoggingImmediateExecutor)
+    return SslHandler(sslEngine, false, delegateTaskExecutor)
 }
 
 internal fun createClientOpenSslHandler(target: NetworkHostAndPort,
                                         expectedRemoteLegalNames: Set<CordaX500Name>,
                                         keyManagerFactory: KeyManagerFactory,
                                         trustManagerFactory: TrustManagerFactory,
-                                        alloc: ByteBufAllocator): SslHandler {
+                                        alloc: ByteBufAllocator,
+                                        delegateTaskExecutor: Executor): SslHandler {
     val sslContext = SslContextBuilder.forClient().sslProvider(SslProvider.OPENSSL).keyManager(keyManagerFactory).trustManager(LoggingTrustManagerFactoryWrapper(trustManagerFactory)).build()
     val sslEngine = sslContext.newEngine(alloc, target.host, target.port)
     sslEngine.enabledProtocols = ArtemisTcpTransport.TLS_VERSIONS.toTypedArray()
@@ -233,12 +223,13 @@ internal fun createClientOpenSslHandler(target: NetworkHostAndPort,
         sslParameters.serverNames = listOf(SNIHostName(x500toHostName(expectedRemoteLegalNames.single())))
         sslEngine.sslParameters = sslParameters
     }
-    return SslHandler(sslEngine, false, LoggingImmediateExecutor)
+    return SslHandler(sslEngine, false, delegateTaskExecutor)
 }
 
 internal fun createServerSslHandler(keyStore: CertificateStore,
                                     keyManagerFactory: KeyManagerFactory,
-                                    trustManagerFactory: TrustManagerFactory): SslHandler {
+                                    trustManagerFactory: TrustManagerFactory,
+                                    delegateTaskExecutor: Executor): SslHandler {
     val sslContext = createAndInitSslContext(keyManagerFactory, trustManagerFactory)
     val sslEngine = sslContext.createSSLEngine()
     sslEngine.useClientMode = false
@@ -249,39 +240,29 @@ internal fun createServerSslHandler(keyStore: CertificateStore,
     val sslParameters = sslEngine.sslParameters
     sslParameters.sniMatchers = listOf(ServerSNIMatcher(keyStore))
     sslEngine.sslParameters = sslParameters
-    return SslHandler(sslEngine, false, LoggingImmediateExecutor)
+    return SslHandler(sslEngine, false, delegateTaskExecutor)
 }
 
 internal fun createServerOpenSslHandler(keyManagerFactory: KeyManagerFactory,
                                         trustManagerFactory: TrustManagerFactory,
-                                        alloc: ByteBufAllocator): SslHandler {
+                                        alloc: ByteBufAllocator,
+                                        delegateTaskExecutor: Executor): SslHandler {
     val sslContext = getServerSslContextBuilder(keyManagerFactory, trustManagerFactory).build()
     val sslEngine = sslContext.newEngine(alloc)
     sslEngine.useClientMode = false
-    return SslHandler(sslEngine, false, LoggingImmediateExecutor)
+    return SslHandler(sslEngine, false, delegateTaskExecutor)
 }
 
-fun createAndInitSslContext(keyManagerFactory: KeyManagerFactory, trustManagerFactory: TrustManagerFactory): SSLContext {
+fun createAndInitSslContext(keyManagerFactory: KeyManagerFactory, trustManagerFactory: TrustManagerFactory?): SSLContext {
     val sslContext = SSLContext.getInstance("TLS")
-    val keyManagers = keyManagerFactory.keyManagers
-    val trustManagers = trustManagerFactory.trustManagers.filterIsInstance(X509ExtendedTrustManager::class.java)
-            .map { LoggingTrustManagerWrapper(it) }.toTypedArray()
-    sslContext.init(keyManagers, trustManagers, newSecureRandom())
+    val trustManagers = trustManagerFactory
+            ?.trustManagers
+            ?.map { if (it is X509ExtendedTrustManager) LoggingTrustManagerWrapper(it) else it }
+            ?.toTypedArray()
+    sslContext.init(keyManagerFactory.keyManagers, trustManagers, newSecureRandom())
     return sslContext
 }
 
-fun initialiseTrustStoreAndEnableCrlChecking(trustStore: CertificateStore,
-                                             revocationConfig: RevocationConfig): CertPathTrustManagerParameters {
-    return initialiseTrustStoreAndEnableCrlChecking(trustStore, revocationConfig.createPKIXRevocationChecker())
-}
-
-fun initialiseTrustStoreAndEnableCrlChecking(trustStore: CertificateStore,
-                                             revocationChecker: PKIXRevocationChecker): CertPathTrustManagerParameters {
-    val pkixParams = PKIXBuilderParameters(trustStore.value.internal, X509CertSelector())
-    pkixParams.addCertPathChecker(revocationChecker)
-    return CertPathTrustManagerParameters(pkixParams)
-}
-
 /**
  * Creates a special SNI handler used only when openSSL is used for AMQPServer
  */
@@ -296,14 +277,13 @@ internal fun createServerSNIOpenSniHandler(keyManagerFactoriesMap: Map<String, K
     return SniHandler(mapping.build())
 }
 
-@Suppress("SpreadOperator")
 private fun getServerSslContextBuilder(keyManagerFactory: KeyManagerFactory, trustManagerFactory: TrustManagerFactory): SslContextBuilder {
     return SslContextBuilder.forServer(keyManagerFactory)
             .sslProvider(SslProvider.OPENSSL)
             .trustManager(LoggingTrustManagerFactoryWrapper(trustManagerFactory))
             .clientAuth(ClientAuth.REQUIRE)
             .ciphers(ArtemisTcpTransport.CIPHER_SUITES)
-            .protocols(*ArtemisTcpTransport.TLS_VERSIONS.toTypedArray())
+            .protocols(ArtemisTcpTransport.TLS_VERSIONS)
 }
 
 internal fun splitKeystore(config: AMQPConfiguration): Map<String, CertHoldingKeyManagerFactoryWrapper> {
@@ -325,9 +305,38 @@ internal fun splitKeystore(config: AMQPConfiguration): Map<String, CertHoldingKe
 
 // As per Javadoc in: https://docs.oracle.com/javase/8/docs/api/javax/net/ssl/KeyManagerFactory.html `init` method
 // 2nd parameter `password` - the password for recovering keys in the KeyStore
-fun KeyManagerFactory.init(keyStore: CertificateStore) = init(keyStore.value.internal, keyStore.entryPassword.toCharArray())
+fun keyManagerFactory(keyStore: CertificateStore): KeyManagerFactory {
+    val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
+    keyManagerFactory.init(keyStore.value.internal, keyStore.entryPassword.toCharArray())
+    return keyManagerFactory
+}
 
-fun TrustManagerFactory.init(trustStore: CertificateStore) = init(trustStore.value.internal)
+fun trustManagerFactory(trustStore: CertificateStore): TrustManagerFactory {
+    val trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+    trustManagerFactory.init(trustStore.value.internal)
+    return trustManagerFactory
+}
+
+fun trustManagerFactoryWithRevocation(trustStore: CertificateStore,
+                                      revocationConfig: RevocationConfig,
+                                      crlSource: CrlSource): TrustManagerFactory {
+    val revocationChecker = when (revocationConfig.mode) {
+        RevocationConfig.Mode.OFF -> AllowAllRevocationChecker
+        RevocationConfig.Mode.EXTERNAL_SOURCE -> {
+            val externalCrlSource = requireNotNull(revocationConfig.externalCrlSource) {
+                "externalCrlSource must be specfied for EXTERNAL_SOURCE"
+            }
+            CordaRevocationChecker(externalCrlSource, softFail = true)
+        }
+        RevocationConfig.Mode.SOFT_FAIL -> CordaRevocationChecker(crlSource, softFail = true)
+        RevocationConfig.Mode.HARD_FAIL -> CordaRevocationChecker(crlSource, softFail = false)
+    }
+    val pkixParams = PKIXBuilderParameters(trustStore.value.internal, X509CertSelector())
+    pkixParams.addCertPathChecker(revocationChecker)
+    val trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+    trustManagerFactory.init(CertPathTrustManagerParameters(pkixParams))
+    return trustManagerFactory
+}
 
 /**
  * Method that converts a [CordaX500Name] to a a valid hostname (RFC-1035). It's used for SNI to indicate the target

node-api/src/main/kotlin/net/corda/nodeapi/internal/revocation/CertDistPointCrlSource.kt

@@ -5,6 +5,9 @@ import com.github.benmanes.caffeine.cache.LoadingCache
 import net.corda.core.internal.readFully
 import net.corda.core.utilities.contextLogger
 import net.corda.core.utilities.debug
+import net.corda.core.utilities.contextLogger
+import net.corda.core.utilities.minutes
+import net.corda.core.utilities.seconds
 import net.corda.nodeapi.internal.crypto.X509CertificateFactory
 import net.corda.nodeapi.internal.crypto.toSimpleString
 import net.corda.nodeapi.internal.protonwrapper.netty.CrlSource
@@ -12,60 +15,71 @@ import net.corda.nodeapi.internal.protonwrapper.netty.distributionPoints
 import java.net.URI
 import java.security.cert.X509CRL
 import java.security.cert.X509Certificate
-import java.util.concurrent.TimeUnit
+import java.time.Duration
 import javax.security.auth.x500.X500Principal
 
 /**
- * [CrlSource] which downloads CRLs from the distribution points in the X509 certificate.
+ * [CrlSource] which downloads CRLs from the distribution points in the X509 certificate and caches them.
  */
 @Suppress("TooGenericExceptionCaught")
-class CertDistPointCrlSource : CrlSource {
+class CertDistPointCrlSource(cacheSize: Long = DEFAULT_CACHE_SIZE,
+                             cacheExpiry: Duration = DEFAULT_CACHE_EXPIRY,
+                             private val connectTimeout: Duration = DEFAULT_CONNECT_TIMEOUT,
+                             private val readTimeout: Duration = DEFAULT_READ_TIMEOUT) : CrlSource {
     companion object {
         private val logger = contextLogger()
 
         // The default SSL handshake timeout is 60s (DEFAULT_SSL_HANDSHAKE_TIMEOUT). Considering there are 3 CRLs endpoints to check in a
         // node handshake, we want to keep the total timeout within that.
-        private const val DEFAULT_CONNECT_TIMEOUT = 9_000
-        private const val DEFAULT_READ_TIMEOUT = 9_000
+        private val DEFAULT_CONNECT_TIMEOUT = 9.seconds
+        private val DEFAULT_READ_TIMEOUT = 9.seconds
         private const val DEFAULT_CACHE_SIZE = 185L  // Same default as the JDK (URICertStore)
-        private const val DEFAULT_CACHE_EXPIRY = 5 * 60 * 1000L
+        private val DEFAULT_CACHE_EXPIRY = 5.minutes
 
-        private val cache: LoadingCache<URI, X509CRL> = Caffeine.newBuilder()
-                .maximumSize(java.lang.Long.getLong("net.corda.dpcrl.cache.size", DEFAULT_CACHE_SIZE))
-                .expireAfterWrite(java.lang.Long.getLong("net.corda.dpcrl.cache.expiry", DEFAULT_CACHE_EXPIRY), TimeUnit.MILLISECONDS)
-                .build(::retrieveCRL)
+        val SINGLETON = CertDistPointCrlSource(
+                cacheSize = java.lang.Long.getLong("net.corda.dpcrl.cache.size", DEFAULT_CACHE_SIZE),
+                cacheExpiry = java.lang.Long.getLong("net.corda.dpcrl.cache.expiry")?.let(Duration::ofMillis) ?: DEFAULT_CACHE_EXPIRY,
+                connectTimeout = java.lang.Long.getLong("net.corda.dpcrl.connect.timeout")?.let(Duration::ofMillis) ?: DEFAULT_CONNECT_TIMEOUT,
+                readTimeout = java.lang.Long.getLong("net.corda.dpcrl.read.timeout")?.let(Duration::ofMillis) ?: DEFAULT_READ_TIMEOUT
+        )
+    }
 
-        private val connectTimeout = Integer.getInteger("net.corda.dpcrl.connect.timeout", DEFAULT_CONNECT_TIMEOUT)
-        private val readTimeout = Integer.getInteger("net.corda.dpcrl.read.timeout", DEFAULT_READ_TIMEOUT)
+    private val cache: LoadingCache<URI, X509CRL> = Caffeine.newBuilder()
+            .maximumSize(cacheSize)
+            .expireAfterWrite(cacheExpiry)
+            .build(::retrieveCRL)
 
-        private fun retrieveCRL(uri: URI): X509CRL {
-            val start = System.currentTimeMillis()
-            val bytes = try {
-                val conn = uri.toURL().openConnection()
-                conn.connectTimeout = connectTimeout
-                conn.readTimeout = readTimeout
-                // Read all bytes first and then pass them into the CertificateFactory. This may seem unnecessary when generateCRL already takes
-                // in an InputStream, but the JDK implementation (sun.security.provider.X509Factory.engineGenerateCRL) converts any IOException
-                // into CRLException and drops the cause chain.
-                conn.getInputStream().readFully()
-            } catch (e: Exception) {
-                if (logger.isDebugEnabled) {
-                    logger.debug("Unable to download CRL from $uri (${System.currentTimeMillis() - start}ms)", e)
-                }
-                throw e
+    private fun retrieveCRL(uri: URI): X509CRL {
+        val start = System.currentTimeMillis()
+        val bytes = try {
+            val conn = uri.toURL().openConnection()
+            conn.connectTimeout = connectTimeout.toMillis().toInt()
+            conn.readTimeout = readTimeout.toMillis().toInt()
+            // Read all bytes first and then pass them into the CertificateFactory. This may seem unnecessary when generateCRL already takes
+            // in an InputStream, but the JDK implementation (sun.security.provider.X509Factory.engineGenerateCRL) converts any IOException
+            // into CRLException and drops the cause chain.
+            conn.getInputStream().readFully()
+        } catch (e: Exception) {
+            if (logger.isDebugEnabled) {
+                logger.debug("Unable to download CRL from $uri (${System.currentTimeMillis() - start}ms)", e)
             }
-            val duration = System.currentTimeMillis() - start
-            val crl = try {
-                X509CertificateFactory().generateCRL(bytes.inputStream())
-            } catch (e: Exception) {
-                if (logger.isDebugEnabled) {
-                    logger.debug("Invalid CRL from $uri (${duration}ms)", e)
-                }
-                throw e
-            }
-            logger.debug { "CRL from $uri (${duration}ms): ${crl.toSimpleString()}" }
-            return crl
+            throw e
         }
+        val duration = System.currentTimeMillis() - start
+        val crl = try {
+            X509CertificateFactory().generateCRL(bytes.inputStream())
+        } catch (e: Exception) {
+            if (logger.isDebugEnabled) {
+                logger.debug("Invalid CRL from $uri (${duration}ms)", e)
+            }
+            throw e
+        }
+        logger.debug { "CRL from $uri (${duration}ms): ${crl.toSimpleString()}" }
+        return crl
+    }
+
+    fun clearCache() {
+        cache.invalidateAll()
     }
 
     override fun fetch(certificate: X509Certificate): Set<X509CRL> {

node-api/src/test/kotlin/net/corda/nodeapi/internal/crypto/TlsDiffAlgorithmsTest.kt

@@ -4,7 +4,8 @@ import net.corda.core.crypto.newSecureRandom
 import net.corda.core.utilities.Try
 import net.corda.core.utilities.contextLogger
 import net.corda.nodeapi.internal.config.CertificateStore
-import net.corda.nodeapi.internal.protonwrapper.netty.init
+import net.corda.nodeapi.internal.protonwrapper.netty.keyManagerFactory
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactory
 import org.assertj.core.api.Assertions
 import org.junit.Rule
 import org.junit.Test
@@ -161,11 +162,9 @@ class TlsDiffAlgorithmsTest(private val serverAlgo: String, private val clientAl
 
     private fun createSslContext(keyStore: CertificateStore, trustStore: CertificateStore): SSLContext {
         return SSLContext.getInstance("TLS").apply {
-            val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-            keyManagerFactory.init(keyStore)
+            val keyManagerFactory = keyManagerFactory(keyStore)
             val keyManagers = keyManagerFactory.keyManagers
-            val trustMgrFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
-            trustMgrFactory.init(trustStore)
+            val trustMgrFactory = trustManagerFactory(trustStore)
             val trustManagers = trustMgrFactory.trustManagers
             init(keyManagers, trustManagers, newSecureRandom())
         }

node-api/src/test/kotlin/net/corda/nodeapi/internal/crypto/TlsDiffProtocolsTest.kt

@@ -4,7 +4,8 @@ import net.corda.core.crypto.newSecureRandom
 import net.corda.core.utilities.Try
 import net.corda.core.utilities.contextLogger
 import net.corda.nodeapi.internal.config.CertificateStore
-import net.corda.nodeapi.internal.protonwrapper.netty.init
+import net.corda.nodeapi.internal.protonwrapper.netty.keyManagerFactory
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactory
 import org.assertj.core.api.Assertions
 import org.junit.Ignore
 import org.junit.Rule
@@ -18,7 +19,6 @@ import java.io.IOException
 import java.net.InetAddress
 import java.net.InetSocketAddress
 import javax.net.ssl.*
-import javax.net.ssl.SNIHostName
 import kotlin.concurrent.thread
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
@@ -209,11 +209,9 @@ class TlsDiffProtocolsTest(private val serverAlgo: String, private val clientAlg
 
     private fun createSslContext(keyStore: CertificateStore, trustStore: CertificateStore): SSLContext {
         return SSLContext.getInstance("TLS").apply {
-            val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-            keyManagerFactory.init(keyStore)
+            val keyManagerFactory = keyManagerFactory(keyStore)
             val keyManagers = keyManagerFactory.keyManagers
-            val trustMgrFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
-            trustMgrFactory.init(trustStore)
+            val trustMgrFactory = trustManagerFactory(trustStore)
             val trustManagers = trustMgrFactory.trustManagers
             init(keyManagers, trustManagers, newSecureRandom())
         }

node-api/src/test/kotlin/net/corda/nodeapi/internal/protonwrapper/netty/SSLHelperTest.kt

@@ -1,5 +1,6 @@
 package net.corda.nodeapi.internal.protonwrapper.netty
 
+import io.netty.util.concurrent.ImmediateExecutor
 import net.corda.core.crypto.SecureHash
 import net.corda.core.identity.CordaX500Name
 import net.corda.core.utilities.NetworkHostAndPort
@@ -8,10 +9,9 @@ import net.corda.nodeapi.internal.DEV_CA_KEY_STORE_PASS
 import net.corda.nodeapi.internal.DEV_CA_PRIVATE_KEY_PASS
 import net.corda.nodeapi.internal.config.CertificateStore
 import net.corda.nodeapi.internal.crypto.X509Utilities.CORDA_CLIENT_TLS
+import net.corda.testing.internal.fixedCrlSource
 import org.junit.Test
-import javax.net.ssl.KeyManagerFactory
 import javax.net.ssl.SNIHostName
-import javax.net.ssl.TrustManagerFactory
 import kotlin.test.assertEquals
 
 class SSLHelperTest {
@@ -20,15 +20,21 @@ class SSLHelperTest {
         val legalName = CordaX500Name("Test", "London", "GB")
         val sslConfig = configureTestSSL(legalName)
 
-        val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        val trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+        val keyManagerFactory = keyManagerFactory(sslConfig.keyStore.get())
 
-        val keyStore = sslConfig.keyStore
-        keyManagerFactory.init(CertificateStore.fromFile(keyStore.path, keyStore.storePassword, keyStore.entryPassword, false))
-        val trustStore = sslConfig.trustStore
-        trustManagerFactory.init(initialiseTrustStoreAndEnableCrlChecking(CertificateStore.fromFile(trustStore.path, trustStore.storePassword, trustStore.entryPassword, false), RevocationConfigImpl(RevocationConfig.Mode.HARD_FAIL)))
+        val trustManagerFactory = trustManagerFactoryWithRevocation(
+                sslConfig.trustStore.get(),
+                RevocationConfigImpl(RevocationConfig.Mode.HARD_FAIL),
+                fixedCrlSource(emptySet())
+        )
 
-        val sslHandler = createClientSslHandler(NetworkHostAndPort("localhost", 1234), setOf(legalName), keyManagerFactory, trustManagerFactory)
+        val sslHandler = createClientSslHandler(
+                NetworkHostAndPort("localhost", 1234),
+                setOf(legalName),
+                keyManagerFactory,
+                trustManagerFactory,
+                ImmediateExecutor.INSTANCE
+        )
         val legalNameHash = SecureHash.sha256(legalName.toString()).toString().take(32).toLowerCase()
 
         // These hardcoded values must not be changed, something is broken if you have to change these hardcoded values.

node-api/src/test/kotlin/net/corda/nodeapi/internal/revocation/CertDistPointCrlSourceTest.kt

@@ -2,15 +2,13 @@ package net.corda.nodeapi.internal.revocation
 
 import net.corda.core.crypto.Crypto
 import net.corda.core.utilities.NetworkHostAndPort
-import net.corda.nodeapi.internal.createDevNodeCa
-import net.corda.testing.core.ALICE_NAME
+import net.corda.nodeapi.internal.DEV_INTERMEDIATE_CA
 import net.corda.testing.node.internal.network.CrlServer
 import org.assertj.core.api.Assertions.assertThat
 import org.bouncycastle.jce.provider.BouncyCastleProvider
 import org.junit.After
 import org.junit.Before
 import org.junit.Test
-import java.math.BigInteger
 
 class CertDistPointCrlSourceTest {
     private lateinit var crlServer: CrlServer
@@ -39,13 +37,14 @@ class CertDistPointCrlSourceTest {
             assertThat(single().revokedCertificates).isNull()
         }
 
-        val nodeCaCert = crlServer.replaceNodeCertDistPoint(createDevNodeCa(crlServer.intermediateCa, ALICE_NAME).certificate)
+        crlSource.clearCache()
 
-        crlServer.revokedNodeCerts += listOf(BigInteger.ONE, BigInteger.TEN)
-        with(crlSource.fetch(nodeCaCert)) {  // Use a different cert to avoid the cache
+        crlServer.revokedIntermediateCerts += DEV_INTERMEDIATE_CA.certificate
+        with(crlSource.fetch(crlServer.intermediateCa.certificate)) {
             assertThat(size).isEqualTo(1)
             val revokedCertificates = single().revokedCertificates
-            assertThat(revokedCertificates.map { it.serialNumber }).containsExactlyInAnyOrder(BigInteger.ONE, BigInteger.TEN)
+            // This also tests clearCache() works.
+            assertThat(revokedCertificates.map { it.serialNumber }).containsExactly(DEV_INTERMEDIATE_CA.certificate.serialNumber)
         }
     }
 }

node-api/src/test/kotlin/net/corda/nodeapi/internal/revocation/CordaRevocationCheckerTest.kt

@@ -5,7 +5,7 @@ import net.corda.nodeapi.internal.DEV_CA_KEY_STORE_PASS
 import net.corda.nodeapi.internal.DEV_CA_PRIVATE_KEY_PASS
 import net.corda.nodeapi.internal.config.CertificateStore
 import net.corda.nodeapi.internal.crypto.X509Utilities
-import net.corda.nodeapi.internal.protonwrapper.netty.CrlSource
+import net.corda.testing.internal.fixedCrlSource
 import org.bouncycastle.jcajce.provider.asymmetric.x509.CertificateFactory
 import org.junit.Test
 import java.math.BigInteger
@@ -41,10 +41,8 @@ class CordaRevocationCheckerTest {
         val resourceAsStream = javaClass.getResourceAsStream("/net/corda/nodeapi/internal/protonwrapper/netty/doorman.crl")
         val crl = CertificateFactory().engineGenerateCRL(resourceAsStream) as X509CRL
 
-        val crlSource = object : CrlSource {
-            override fun fetch(certificate: X509Certificate): Set<X509CRL> = setOf(crl)
-        }
-        val checker = CordaRevocationChecker(crlSource,
+        val checker = CordaRevocationChecker(
+                crlSource = fixedCrlSource(setOf(crl)),
                 softFail = true,
                 dateSource = { Date.from(date.atStartOfDay().toInstant(ZoneOffset.UTC)) }
         )

node-api/src/test/kotlin/net/corda/nodeapi/internal/revocation/RevocationTest.kt

@@ -1,20 +1,16 @@
-package net.corda.node.internal.artemis
+package net.corda.nodeapi.internal.revocation
 
 import net.corda.core.crypto.Crypto
-import net.corda.core.utilities.days
-import net.corda.node.internal.artemis.CertificateChainCheckPolicy.RevocationCheck
+import net.corda.nodeapi.internal.config.CertificateStore
+import net.corda.nodeapi.internal.crypto.CertificateAndKeyPair
 import net.corda.nodeapi.internal.crypto.CertificateType
+import net.corda.nodeapi.internal.crypto.X509KeyStore
 import net.corda.nodeapi.internal.crypto.X509Utilities
 import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfig
+import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfigImpl
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactoryWithRevocation
+import net.corda.testing.core.createCRL
 import org.bouncycastle.asn1.x500.X500Name
-import org.bouncycastle.asn1.x509.CRLReason
-import org.bouncycastle.asn1.x509.Extension
-import org.bouncycastle.asn1.x509.ExtensionsGenerator
-import org.bouncycastle.asn1.x509.GeneralName
-import org.bouncycastle.asn1.x509.GeneralNames
-import org.bouncycastle.asn1.x509.IssuingDistributionPoint
-import org.bouncycastle.cert.jcajce.JcaX509v2CRLBuilder
-import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -22,15 +18,18 @@ import org.junit.rules.TemporaryFolder
 import org.junit.runner.RunWith
 import org.junit.runners.Parameterized
 import java.io.File
+import java.security.KeyPair
 import java.security.KeyStore
 import java.security.PrivateKey
+import java.security.cert.CertificateException
 import java.security.cert.X509Certificate
 import java.util.*
+import javax.net.ssl.X509TrustManager
 import javax.security.auth.x500.X500Principal
-import kotlin.test.assertFails
+import kotlin.test.assertFailsWith
 
 @RunWith(Parameterized::class)
-class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
+class RevocationTest(private val revocationMode: RevocationConfig.Mode) {
     companion object {
         @JvmStatic
         @Parameterized.Parameters(name = "revocationMode = {0}")
@@ -45,8 +44,7 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
     private lateinit var doormanCRL: File
     private lateinit var tlsCRL: File
 
-    private val keyStore = KeyStore.getInstance("JKS")
-    private val trustStore = KeyStore.getInstance("JKS")
+    private lateinit var trustManager: X509TrustManager
 
     private val rootKeyPair = Crypto.generateKeyPair(Crypto.ECDSA_SECP256R1_SHA256)
     private val tlsCRLIssuerKeyPair = Crypto.generateKeyPair(Crypto.ECDSA_SECP256R1_SHA256)
@@ -61,9 +59,7 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
     private lateinit var tlsCert: X509Certificate
 
     private val chain
-        get() = listOf(tlsCert, nodeCACert, doormanCert, rootCert).map {
-            javax.security.cert.X509Certificate.getInstance(it.encoded)
-        }.toTypedArray()
+        get() = arrayOf(tlsCert, nodeCACert, doormanCert, rootCert)
 
     @Before
     fun before() {
@@ -74,10 +70,18 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
         rootCert = X509Utilities.createSelfSignedCACertificate(X500Principal("CN=root"), rootKeyPair)
         tlsCRLIssuerCert = X509Utilities.createSelfSignedCACertificate(X500Principal("CN=issuer"), tlsCRLIssuerKeyPair)
 
+        val trustStore = KeyStore.getInstance("JKS")
         trustStore.load(null, null)
         trustStore.setCertificateEntry("cordatlscrlsigner", tlsCRLIssuerCert)
         trustStore.setCertificateEntry("cordarootca", rootCert)
 
+        val trustManagerFactory = trustManagerFactoryWithRevocation(
+                CertificateStore.of(X509KeyStore(trustStore, "pass"), "pass", "pass"),
+                RevocationConfigImpl(revocationMode),
+                CertDistPointCrlSource()
+        )
+        trustManager = trustManagerFactory.trustManagers.single() as X509TrustManager
+
         doormanCert = X509Utilities.createCertificate(
                 CertificateType.INTERMEDIATE_CA, rootCert, rootKeyPair, X500Principal("CN=doorman"), doormanKeyPair.public,
                 crlDistPoint = rootCRL.toURI().toString()
@@ -91,43 +95,34 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
                 crlDistPoint = tlsCRL.toURI().toString(), crlIssuer = X500Name.getInstance(tlsCRLIssuerCert.issuerX500Principal.encoded)
         )
 
-        rootCRL.createCRL(rootCert, rootKeyPair.private, false)
-        doormanCRL.createCRL(doormanCert, doormanKeyPair.private, false)
-        tlsCRL.createCRL(tlsCRLIssuerCert, tlsCRLIssuerKeyPair.private, true)
+        rootCRL.writeCRL(rootCert, rootKeyPair.private, false)
+        doormanCRL.writeCRL(doormanCert, doormanKeyPair.private, false)
+        tlsCRL.writeCRL(tlsCRLIssuerCert, tlsCRLIssuerKeyPair.private, true)
     }
 
-    private fun File.createCRL(certificate: X509Certificate, privateKey: PrivateKey, indirect: Boolean, vararg revoked: X509Certificate) {
-        val builder = JcaX509v2CRLBuilder(certificate.subjectX500Principal, Date())
-        builder.setNextUpdate(Date.from(Date().toInstant() + 7.days))
-        builder.addExtension(Extension.issuingDistributionPoint, true, IssuingDistributionPoint(null, indirect, false))
-        revoked.forEach {
-            val extensionsGenerator = ExtensionsGenerator()
-            extensionsGenerator.addExtension(Extension.reasonCode, false, CRLReason.lookup(CRLReason.keyCompromise))
-            // Certificate issuer is required for indirect CRL
-            val certificateIssuerName = X500Name.getInstance(it.issuerX500Principal.encoded)
-            extensionsGenerator.addExtension(Extension.certificateIssuer, true, GeneralNames(GeneralName(certificateIssuerName)))
-            builder.addCRLEntry(it.serialNumber, Date(), extensionsGenerator.generate())
-        }
-        val holder = builder.build(JcaContentSignerBuilder("SHA256withECDSA").setProvider(Crypto.findProvider("BC")).build(privateKey))
-        outputStream().use { it.write(holder.encoded) }
+    private fun File.writeCRL(certificate: X509Certificate, privateKey: PrivateKey, indirect: Boolean, vararg revoked: X509Certificate) {
+        val crl = createCRL(
+                CertificateAndKeyPair(certificate, KeyPair(certificate.publicKey, privateKey)),
+                revoked.asList(),
+                indirect = indirect
+        )
+        writeBytes(crl.encoded)
     }
 
-    private fun assertFailsFor(vararg modes: RevocationConfig.Mode, block: () -> Unit) {
-        if (revocationMode in modes) assertFails(block) else block()
+    private fun assertFailsFor(vararg modes: RevocationConfig.Mode) {
+        if (revocationMode in modes) assertFailsWith(CertificateException::class, ::doRevocationCheck) else doRevocationCheck()
     }
 
     @Test(timeout = 300_000)
     fun `ok with empty CRLs`() {
-        RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
+        doRevocationCheck()
     }
 
     @Test(timeout = 300_000)
     fun `soft fail with revoked TLS certificate`() {
-        tlsCRL.createCRL(tlsCRLIssuerCert, tlsCRLIssuerKeyPair.private, true, tlsCert)
+        tlsCRL.writeCRL(tlsCRLIssuerCert, tlsCRLIssuerKeyPair.private, true, tlsCert)
 
-        assertFailsFor(RevocationConfig.Mode.SOFT_FAIL, RevocationConfig.Mode.HARD_FAIL) {
-            RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
-        }
+        assertFailsFor(RevocationConfig.Mode.SOFT_FAIL, RevocationConfig.Mode.HARD_FAIL)
     }
 
     @Test(timeout = 300_000)
@@ -138,9 +133,7 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
                 crlIssuer = X500Name.getInstance(tlsCRLIssuerCert.issuerX500Principal.encoded)
         )
 
-        assertFailsFor(RevocationConfig.Mode.HARD_FAIL) {
-            RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
-        }
+        assertFailsFor(RevocationConfig.Mode.HARD_FAIL)
     }
 
     @Test(timeout = 300_000)
@@ -150,9 +143,7 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
                 crlDistPoint = tlsCRL.toURI().toString(), crlIssuer = X500Name("CN=unknown")
         )
 
-        assertFailsFor(RevocationConfig.Mode.HARD_FAIL) {
-            RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
-        }
+        assertFailsFor(RevocationConfig.Mode.HARD_FAIL)
     }
 
     @Test(timeout = 300_000)
@@ -162,9 +153,7 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
                 crlDistPoint = tlsCRL.toURI().toString()
         )
 
-        assertFailsFor(RevocationConfig.Mode.HARD_FAIL) {
-            RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
-        }
+        assertFailsFor(RevocationConfig.Mode.HARD_FAIL)
     }
 
     @Test(timeout = 300_000)
@@ -174,18 +163,16 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
                 CertificateType.TLS, nodeCACert, nodeCAKeyPair, X500Principal("CN=other"), otherKeyPair.public,
                 crlDistPoint = tlsCRL.toURI().toString(), crlIssuer = X500Name.getInstance(tlsCRLIssuerCert.issuerX500Principal.encoded)
         )
-        tlsCRL.createCRL(tlsCRLIssuerCert, tlsCRLIssuerKeyPair.private, true, otherCert)
+        tlsCRL.writeCRL(tlsCRLIssuerCert, tlsCRLIssuerKeyPair.private, true, otherCert)
 
-        RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
+        doRevocationCheck()
     }
 
     @Test(timeout = 300_000)
     fun `soft fail with revoked node CA certificate`() {
-        doormanCRL.createCRL(doormanCert, doormanKeyPair.private, false, nodeCACert)
+        doormanCRL.writeCRL(doormanCert, doormanKeyPair.private, false, nodeCACert)
 
-        assertFailsFor(RevocationConfig.Mode.SOFT_FAIL, RevocationConfig.Mode.HARD_FAIL) {
-            RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
-        }
+        assertFailsFor(RevocationConfig.Mode.SOFT_FAIL, RevocationConfig.Mode.HARD_FAIL)
     }
 
     @Test(timeout = 300_000)
@@ -195,9 +182,7 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
                 crlDistPoint = "http://unknown-host:10000/certificate-revocation-list/doorman"
         )
 
-        assertFailsFor(RevocationConfig.Mode.HARD_FAIL) {
-            RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
-        }
+        assertFailsFor(RevocationConfig.Mode.HARD_FAIL)
     }
 
     @Test(timeout = 300_000)
@@ -207,8 +192,12 @@ class RevocationCheckTest(private val revocationMode: RevocationConfig.Mode) {
                 CertificateType.NODE_CA, doormanCert, doormanKeyPair, X500Principal("CN=other"), otherKeyPair.public,
                 crlDistPoint = doormanCRL.toURI().toString()
         )
-        doormanCRL.createCRL(doormanCert, doormanKeyPair.private, false, otherCert)
+        doormanCRL.writeCRL(doormanCert, doormanKeyPair.private, false, otherCert)
 
-        RevocationCheck(revocationMode).createCheck(keyStore, trustStore).checkCertificateChain(chain)
+        doRevocationCheck()
+    }
+
+    private fun doRevocationCheck() {
+        trustManager.checkClientTrusted(chain, "ECDHE_ECDSA")
     }
 }

node/build.gradle

@@ -264,8 +264,6 @@ tasks.register('integrationTest', Test) {
     testClassesDirs = sourceSets.integrationTest.output.classesDirs
     classpath = sourceSets.integrationTest.runtimeClasspath
     maxParallelForks = (System.env.CORDA_NODE_INT_TESTING_FORKS == null) ? 1 : "$System.env.CORDA_NODE_INT_TESTING_FORKS".toInteger()
-    // CertificateRevocationListNodeTests
-    systemProperty 'net.corda.dpcrl.connect.timeout', '4000'
 }
 
 tasks.register('slowIntegrationTest', Test) {

node/src/integration-test/kotlin/net/corda/node/amqp/AMQPClientSslErrorsTest.kt

@@ -14,12 +14,15 @@ import net.corda.node.services.config.NodeConfiguration
 import net.corda.node.services.config.configureWithDevSSLCertificate
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPClient
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPConfiguration
-import net.corda.nodeapi.internal.protonwrapper.netty.init
-import net.corda.nodeapi.internal.protonwrapper.netty.initialiseTrustStoreAndEnableCrlChecking
+import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfig
+import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfigImpl
+import net.corda.nodeapi.internal.protonwrapper.netty.keyManagerFactory
 import net.corda.nodeapi.internal.protonwrapper.netty.toRevocationConfig
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactoryWithRevocation
 import net.corda.testing.core.ALICE_NAME
 import net.corda.testing.core.BOB_NAME
 import net.corda.testing.driver.internal.incrementalPortAllocation
+import net.corda.testing.internal.fixedCrlSource
 import org.junit.Assume.assumeFalse
 import org.junit.Before
 import org.junit.Rule
@@ -96,11 +99,13 @@ class AMQPClientSslErrorsTest(@Suppress("unused") private val iteration: Int) {
             override val maxMessageSize: Int = MAX_MESSAGE_SIZE
         }
 
-        serverKeyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        serverTrustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+        serverKeyManagerFactory = keyManagerFactory(keyStore)
 
-        serverKeyManagerFactory.init(keyStore)
-        serverTrustManagerFactory.init(initialiseTrustStoreAndEnableCrlChecking(serverAmqpConfig.trustStore, serverAmqpConfig.revocationConfig))
+        serverTrustManagerFactory = trustManagerFactoryWithRevocation(
+                serverAmqpConfig.trustStore,
+                RevocationConfigImpl(RevocationConfig.Mode.SOFT_FAIL),
+                fixedCrlSource(emptySet())
+        )
     }
 
     private fun setupClientCertificates() {
@@ -127,11 +132,13 @@ class AMQPClientSslErrorsTest(@Suppress("unused") private val iteration: Int) {
             override val sslHandshakeTimeout: Duration = 3.seconds
         }
 
-        clientKeyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        clientTrustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+        clientKeyManagerFactory = keyManagerFactory(keyStore)
 
-        clientKeyManagerFactory.init(keyStore)
-        clientTrustManagerFactory.init(initialiseTrustStoreAndEnableCrlChecking(clientAmqpConfig.trustStore, clientAmqpConfig.revocationConfig))
+        clientTrustManagerFactory = trustManagerFactoryWithRevocation(
+                clientAmqpConfig.trustStore,
+                RevocationConfigImpl(RevocationConfig.Mode.SOFT_FAIL),
+                fixedCrlSource(emptySet())
+        )
     }
 
     @Test(timeout = 300_000)

node/src/integration-test/kotlin/net/corda/node/amqp/CertificateRevocationListNodeTests.kt

@@ -1,3 +1,5 @@
+@file:Suppress("LongParameterList")
+
 package net.corda.node.amqp
 
 import com.nhaarman.mockito_kotlin.doReturn
@@ -5,10 +7,10 @@ import com.nhaarman.mockito_kotlin.whenever
 import net.corda.core.crypto.Crypto
 import net.corda.core.identity.CordaX500Name
 import net.corda.core.internal.div
-import net.corda.core.internal.rootCause
 import net.corda.core.internal.times
-import net.corda.core.toFuture
 import net.corda.core.utilities.NetworkHostAndPort
+import net.corda.core.utilities.minutes
+import net.corda.core.utilities.seconds
 import net.corda.coretesting.internal.rigorousMock
 import net.corda.coretesting.internal.stubs.CertificateStoreStubs
 import net.corda.node.services.config.NodeConfiguration
@@ -18,63 +20,67 @@ import net.corda.nodeapi.internal.ArtemisMessagingClient
 import net.corda.nodeapi.internal.ArtemisMessagingComponent.Companion.P2P_PREFIX
 import net.corda.nodeapi.internal.config.CertificateStoreSupplier
 import net.corda.nodeapi.internal.config.MutualSslConfiguration
-import net.corda.nodeapi.internal.crypto.X509Utilities
+import net.corda.nodeapi.internal.crypto.X509Utilities.CORDA_CLIENT_CA
+import net.corda.nodeapi.internal.crypto.X509Utilities.CORDA_CLIENT_TLS
 import net.corda.nodeapi.internal.protonwrapper.messages.MessageStatus
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPClient
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPConfiguration
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPServer
+import net.corda.nodeapi.internal.protonwrapper.netty.ConnectionChange
 import net.corda.nodeapi.internal.protonwrapper.netty.toRevocationConfig
+import net.corda.nodeapi.internal.revocation.CertDistPointCrlSource
 import net.corda.testing.core.ALICE_NAME
 import net.corda.testing.core.CHARLIE_NAME
 import net.corda.testing.core.MAX_MESSAGE_SIZE
 import net.corda.testing.driver.internal.incrementalPortAllocation
 import net.corda.testing.node.internal.network.CrlServer
 import net.corda.testing.node.internal.network.CrlServer.Companion.EMPTY_CRL
-import net.corda.testing.node.internal.network.CrlServer.Companion.FORBIDDEN_CRL
 import net.corda.testing.node.internal.network.CrlServer.Companion.NODE_CRL
 import net.corda.testing.node.internal.network.CrlServer.Companion.withCrlDistPoint
 import org.apache.activemq.artemis.api.core.RoutingType
 import org.assertj.core.api.Assertions.assertThat
-import org.assertj.core.api.Assertions.assertThatIllegalArgumentException
 import org.bouncycastle.jce.provider.BouncyCastleProvider
 import org.junit.After
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
 import org.junit.rules.TemporaryFolder
-import java.net.SocketTimeoutException
+import java.io.Closeable
 import java.security.cert.X509Certificate
 import java.time.Duration
+import java.util.concurrent.BlockingQueue
+import java.util.concurrent.LinkedBlockingQueue
+import java.util.concurrent.TimeUnit
 import java.util.concurrent.atomic.AtomicInteger
-import kotlin.test.assertEquals
+import java.util.stream.IntStream
 
-@Suppress("LongParameterList")
-class CertificateRevocationListNodeTests {
+abstract class AbstractServerRevocationTest {
     @Rule
     @JvmField
     val temporaryFolder = TemporaryFolder()
 
     private val portAllocation = incrementalPortAllocation()
-    private val serverPort = portAllocation.nextPort()
+    protected val serverPort = portAllocation.nextPort()
 
-    private lateinit var crlServer: CrlServer
-    private lateinit var amqpServer: AMQPServer
-    private lateinit var amqpClient: AMQPClient
+    protected lateinit var crlServer: CrlServer
+    private val amqpClients = ArrayList<AMQPClient>()
 
-    private abstract class AbstractNodeConfiguration : NodeConfiguration
+    protected lateinit var defaultCrlDistPoints: CrlDistPoints
+
+    protected abstract class AbstractNodeConfiguration : NodeConfiguration
 
     companion object {
         private val unreachableIpCounter = AtomicInteger(1)
 
-        private val crlConnectTimeout = Duration.ofMillis(System.getProperty("net.corda.dpcrl.connect.timeout").toLong())
+         val crlConnectTimeout = 2.seconds
 
         /**
          * Use this method to get a unqiue unreachable IP address. Subsequent uses of the same IP for connection timeout testing purposes
          * may not work as the OS process may cache the timeout result.
          */
-        private fun newUnreachableIpAddress(): String {
+        private fun newUnreachableIpAddress(): NetworkHostAndPort {
             check(unreachableIpCounter.get() != 255)
-            return "10.255.255.${unreachableIpCounter.getAndIncrement()}"
+            return NetworkHostAndPort("10.255.255", unreachableIpCounter.getAndIncrement())
         }
     }
 
@@ -84,252 +90,190 @@ class CertificateRevocationListNodeTests {
         Crypto.findProvider(BouncyCastleProvider.PROVIDER_NAME)
         crlServer = CrlServer(NetworkHostAndPort("localhost", 0))
         crlServer.start()
+        defaultCrlDistPoints = CrlDistPoints(crlServer.hostAndPort)
     }
 
     @After
     fun tearDown() {
-        if (::amqpClient.isInitialized) {
-            amqpClient.close()
-        }
-        if (::amqpServer.isInitialized) {
-            amqpServer.close()
-        }
+        amqpClients.parallelStream().forEach(AMQPClient::close)
         if (::crlServer.isInitialized) {
             crlServer.close()
         }
     }
 
     @Test(timeout=300_000)
-	fun `AMQP server connection works and soft fail is enabled`() {
-        verifyAMQPConnection(
+	fun `connection succeeds when soft fail is enabled`() {
+        verifyConnection(
                 crlCheckSoftFail = true,
-                expectedConnectStatus = true
+                expectedConnectedStatus = true
         )
     }
 
     @Test(timeout=300_000)
-	fun `AMQP server connection works and soft fail is disabled`() {
-        verifyAMQPConnection(
+	fun `connection succeeds when soft fail is disabled`() {
+        verifyConnection(
                 crlCheckSoftFail = false,
-                expectedConnectStatus = true
+                expectedConnectedStatus = true
         )
     }
 
     @Test(timeout=300_000)
-	fun `AMQP server connection fails when client's certificate is revoked and soft fail is enabled`() {
-        verifyAMQPConnection(
+	fun `connection fails when client's certificate is revoked and soft fail is enabled`() {
+        verifyConnection(
                 crlCheckSoftFail = true,
                 revokeClientCert = true,
-                expectedConnectStatus = false
+                expectedConnectedStatus = false
         )
     }
 
     @Test(timeout=300_000)
-	fun `AMQP server connection fails when client's certificate is revoked and soft fail is disabled`() {
-        verifyAMQPConnection(
+	fun `connection fails when client's certificate is revoked and soft fail is disabled`() {
+        verifyConnection(
                 crlCheckSoftFail = false,
                 revokeClientCert = true,
-                expectedConnectStatus = false
+                expectedConnectedStatus = false
         )
     }
 
     @Test(timeout=300_000)
-	fun `AMQP server connection fails when servers's certificate is revoked and soft fail is enabled`() {
-        verifyAMQPConnection(
+	fun `connection fails when server's certificate is revoked and soft fail is enabled`() {
+        verifyConnection(
                 crlCheckSoftFail = true,
                 revokeServerCert = true,
-                expectedConnectStatus = false
+                expectedConnectedStatus = false
         )
     }
 
     @Test(timeout=300_000)
-    fun `AMQP server connection fails when servers's certificate is revoked and soft fail is disabled`() {
-        verifyAMQPConnection(
+    fun `connection fails when server's certificate is revoked and soft fail is disabled`() {
+        verifyConnection(
                 crlCheckSoftFail = false,
                 revokeServerCert = true,
-                expectedConnectStatus = false
+                expectedConnectedStatus = false
         )
     }
 
     @Test(timeout=300_000)
-	fun `AMQP server connection succeeds when CRL cannot be obtained and soft fail is enabled`() {
-        verifyAMQPConnection(
+	fun `connection succeeds when CRL cannot be obtained and soft fail is enabled`() {
+        verifyConnection(
                 crlCheckSoftFail = true,
-                nodeCrlDistPoint = "http://${crlServer.hostAndPort}/crl/invalid.crl",
-                expectedConnectStatus = true
+                clientCrlDistPoints = defaultCrlDistPoints.copy(nodeCa = "non-existent.crl"),
+                expectedConnectedStatus = true
         )
     }
 
     @Test(timeout=300_000)
-    fun `AMQP server connection fails when CRL cannot be obtained and soft fail is disabled`() {
-        verifyAMQPConnection(
+    fun `connection fails when CRL cannot be obtained and soft fail is disabled`() {
+        verifyConnection(
                 crlCheckSoftFail = false,
-                nodeCrlDistPoint = "http://${crlServer.hostAndPort}/crl/invalid.crl",
-                expectedConnectStatus = false
+                clientCrlDistPoints = defaultCrlDistPoints.copy(nodeCa = "non-existent.crl"),
+                expectedConnectedStatus = false
         )
     }
 
     @Test(timeout=300_000)
-    fun `AMQP server connection succeeds when CRL is not defined and soft fail is enabled`() {
-        verifyAMQPConnection(
+    fun `connection succeeds when CRL is not defined for node CA cert and soft fail is enabled`() {
+        verifyConnection(
                 crlCheckSoftFail = true,
-                nodeCrlDistPoint = null,
-                expectedConnectStatus = true
+                clientCrlDistPoints = defaultCrlDistPoints.copy(nodeCa = null),
+                expectedConnectedStatus = true
         )
     }
 
     @Test(timeout=300_000)
-	fun `AMQP server connection fails when CRL is not defined and soft fail is disabled`() {
-        verifyAMQPConnection(
+	fun `connection fails when CRL is not defined for node CA cert and soft fail is disabled`() {
+        verifyConnection(
                 crlCheckSoftFail = false,
-                nodeCrlDistPoint = null,
-                expectedConnectStatus = false
+                clientCrlDistPoints = defaultCrlDistPoints.copy(nodeCa = null),
+                expectedConnectedStatus = false
         )
     }
 
     @Test(timeout=300_000)
-    fun `AMQP server connection succeeds when CRL retrieval is forbidden and soft fail is enabled`() {
-        verifyAMQPConnection(
+    fun `connection succeeds when CRL is not defined for TLS cert and soft fail is enabled`() {
+        verifyConnection(
                 crlCheckSoftFail = true,
-                nodeCrlDistPoint = "http://${crlServer.hostAndPort}/crl/$FORBIDDEN_CRL",
-                expectedConnectStatus = true
+                clientCrlDistPoints = defaultCrlDistPoints.copy(tls = null),
+                expectedConnectedStatus = true
         )
     }
 
     @Test(timeout=300_000)
-    fun `AMQP server connection succeeds when CRL endpoint is unreachable, soft fail is enabled and CRL timeouts are within SSL handshake timeout`() {
-        verifyAMQPConnection(
-                crlCheckSoftFail = true,
-                nodeCrlDistPoint = "http://${newUnreachableIpAddress()}/crl/unreachable.crl",
-                sslHandshakeTimeout = crlConnectTimeout * 3,
-                expectedConnectStatus = true
+    fun `connection fails when CRL is not defined for TLS cert and soft fail is disabled`() {
+        verifyConnection(
+                crlCheckSoftFail = false,
+                clientCrlDistPoints = defaultCrlDistPoints.copy(tls = null),
+                expectedConnectedStatus = false
         )
-        val timeoutExceptions = (amqpServer.softFailExceptions + amqpClient.softFailExceptions)
-                .map { it.rootCause }
-                .filterIsInstance<SocketTimeoutException>()
-        assertThat(timeoutExceptions).isNotEmpty
     }
 
     @Test(timeout=300_000)
-    fun `AMQP server connection fails when CRL endpoint is unreachable, despite soft fail enabled, when CRL timeouts are not within SSL handshake timeout`() {
-        verifyAMQPConnection(
+    fun `connection succeeds when CRL endpoint is unreachable, soft fail is enabled and CRL timeouts are within SSL handshake timeout`() {
+        verifyConnection(
+                crlCheckSoftFail = true,
+                sslHandshakeTimeout = crlConnectTimeout * 4,
+                clientCrlDistPoints = defaultCrlDistPoints.copy(crlServerAddress = newUnreachableIpAddress()),
+                expectedConnectedStatus = true
+        )
+    }
+
+    @Test(timeout=300_000)
+    fun `connection fails when CRL endpoint is unreachable, despite soft fail enabled, when CRL timeouts are not within SSL handshake timeout`() {
+        verifyConnection(
                 crlCheckSoftFail = true,
-                nodeCrlDistPoint = "http://${newUnreachableIpAddress()}/crl/unreachable.crl",
                 sslHandshakeTimeout = crlConnectTimeout / 2,
-                expectedConnectStatus = false
+                clientCrlDistPoints = defaultCrlDistPoints.copy(crlServerAddress = newUnreachableIpAddress()),
+                expectedConnectedStatus = false
         )
     }
 
-    @Test(timeout=300_000)
-	fun `verify CRL algorithms`() {
-        val crl = crlServer.createRevocationList(
-                "SHA256withECDSA",
-                crlServer.rootCa,
-                EMPTY_CRL,
-                true,
-                emptyList()
+    @Test(timeout = 300_000)
+    fun `influx of new clients during CRL endpoint downtime does not cause existing connections to drop`() {
+        val serverCrlSource = CertDistPointCrlSource()
+        // Start the server and verify the first client has connected
+        val firstClientConnectionChangeStatus = verifyConnection(
+                crlCheckSoftFail = true,
+                crlSource = serverCrlSource,
+                // In general, N remoting threads will naturally support N-1 new handshaking clients plus one thread for heartbeating with
+                // existing clients. The trick is to make sure at least N new clients are also supported.
+                remotingThreads = 2,
+                expectedConnectedStatus = true
         )
-        // This should pass.
-        crl.verify(crlServer.rootCa.keyPair.public)
 
-        // Try changing the algorithm to EC will fail.
-        assertThatIllegalArgumentException().isThrownBy {
-            crlServer.createRevocationList(
-                    "EC",
-                    crlServer.rootCa,
-                    EMPTY_CRL,
-                    true,
-                    emptyList()
+        // Now simulate the CRL endpoint becoming very slow/unreachable
+        crlServer.delay = 10.minutes
+        // And pretend enough time has elapsed that the cached CRLs have expired and need downloading again
+        serverCrlSource.clearCache()
+
+        // Now a bunch of new clients have arrived and want to handshake with the server, which will potentially cause the server's Netty
+        // threads to be tied up in trying to download the CRLs.
+        IntStream.range(0, 2).parallel().forEach { clientIndex ->
+            val (newClient, _) = createAMQPClient(
+                    serverPort,
+                    crlCheckSoftFail = true,
+                    legalName = CordaX500Name("NewClient$clientIndex", "London", "GB"),
+                    crlDistPoints = defaultCrlDistPoints
             )
-        }.withMessage("Unknown signature type requested: EC")
+            newClient.start()
+        }
+
+        // Make sure there are no further connection change updates, i.e. the first client stays connected throughout this whole saga
+        assertThat(firstClientConnectionChangeStatus.poll(30, TimeUnit.SECONDS)).isNull()
     }
 
-    @Test(timeout = 300_000)
-    fun `Artemis server connection succeeds with soft fail CRL check`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = true,
-                crlCheckArtemisServer = true,
-                expectedStatus = MessageStatus.Acknowledged
-        )
-    }
+    protected abstract fun verifyConnection(crlCheckSoftFail: Boolean,
+                                            crlSource: CertDistPointCrlSource = CertDistPointCrlSource(connectTimeout = crlConnectTimeout),
+                                            sslHandshakeTimeout: Duration? = null,
+                                            remotingThreads: Int? = null,
+                                            clientCrlDistPoints: CrlDistPoints = defaultCrlDistPoints,
+                                            revokeClientCert: Boolean = false,
+                                            revokeServerCert: Boolean = false,
+                                            expectedConnectedStatus: Boolean): BlockingQueue<ConnectionChange>
 
-    @Test(timeout = 300_000)
-    fun `Artemis server connection succeeds with hard fail CRL check`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = false,
-                crlCheckArtemisServer = true,
-                expectedStatus = MessageStatus.Acknowledged
-        )
-    }
-
-    @Test(timeout = 300_000)
-    fun `Artemis server connection succeeds with soft fail CRL check on unavailable URL`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = true,
-                crlCheckArtemisServer = true,
-                expectedStatus = MessageStatus.Acknowledged,
-                nodeCrlDistPoint = "http://${crlServer.hostAndPort}/crl/$FORBIDDEN_CRL"
-        )
-    }
-
-    @Test(timeout = 300_000)
-    fun `Artemis server connection succeeds with soft fail CRL check on unreachable URL if CRL timeout is within SSL handshake timeout`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = true,
-                crlCheckArtemisServer = true,
-                expectedStatus = MessageStatus.Acknowledged,
-                nodeCrlDistPoint = "http://${newUnreachableIpAddress()}/crl/unreachable.crl",
-                sslHandshakeTimeout = crlConnectTimeout * 3
-        )
-    }
-
-    @Test(timeout = 300_000)
-    fun `Artemis server connection fails with soft fail CRL check on unreachable URL if CRL timeout is not within SSL handshake timeout`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = true,
-                crlCheckArtemisServer = true,
-                expectedConnected = false,
-                nodeCrlDistPoint = "http://${newUnreachableIpAddress()}/crl/unreachable.crl",
-                sslHandshakeTimeout = crlConnectTimeout / 2
-        )
-    }
-
-    @Test(timeout = 300_000)
-    fun `Artemis server connection fails with hard fail CRL check on unavailable URL`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = false,
-                crlCheckArtemisServer = true,
-                expectedStatus = MessageStatus.Rejected,
-                nodeCrlDistPoint = "http://${crlServer.hostAndPort}/crl/$FORBIDDEN_CRL"
-        )
-    }
-
-    @Test(timeout = 300_000)
-    fun `Artemis server connection fails with soft fail CRL check on revoked node certificate`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = true,
-                crlCheckArtemisServer = true,
-                expectedStatus = MessageStatus.Rejected,
-                revokedNodeCert = true
-        )
-    }
-
-    @Test(timeout = 300_000)
-    fun `Artemis server connection succeeds with disabled CRL check on revoked node certificate`() {
-        verifyArtemisConnection(
-                crlCheckSoftFail = false,
-                crlCheckArtemisServer = false,
-                expectedStatus = MessageStatus.Acknowledged,
-                revokedNodeCert = true
-        )
-    }
-
-    private fun createAMQPClient(targetPort: Int,
-                                 crlCheckSoftFail: Boolean,
-                                 legalName: CordaX500Name,
-                                 nodeCrlDistPoint: String? = "http://${crlServer.hostAndPort}/crl/$NODE_CRL",
-                                 tlsCrlDistPoint: String? = "http://${crlServer.hostAndPort}/crl/$EMPTY_CRL",
-                                 maxMessageSize: Int = MAX_MESSAGE_SIZE): X509Certificate {
+    protected fun createAMQPClient(targetPort: Int,
+                                   crlCheckSoftFail: Boolean,
+                                   legalName: CordaX500Name,
+                                   crlDistPoints: CrlDistPoints): Pair<AMQPClient, X509Certificate> {
         val baseDirectory = temporaryFolder.root.toPath() / legalName.organisation
         val certificatesDirectory = baseDirectory / "certificates"
         val p2pSslConfiguration = CertificateStoreStubs.P2P.withCertificatesDirectory(certificatesDirectory)
@@ -343,31 +287,128 @@ class CertificateRevocationListNodeTests {
             doReturn(crlCheckSoftFail).whenever(it).crlCheckSoftFail
         }
         clientConfig.configureWithDevSSLCertificate()
-        val nodeCert = recreateNodeCaAndTlsCertificates(signingCertificateStore, p2pSslConfiguration, nodeCrlDistPoint, tlsCrlDistPoint)
+        val nodeCert = crlDistPoints.recreateNodeCaAndTlsCertificates(signingCertificateStore, p2pSslConfiguration, crlServer)
         val keyStore = clientConfig.p2pSslOptions.keyStore.get()
 
         val amqpConfig = object : AMQPConfiguration {
             override val keyStore = keyStore
             override val trustStore = clientConfig.p2pSslOptions.trustStore.get()
-            override val maxMessageSize: Int = maxMessageSize
+            override val maxMessageSize: Int = MAX_MESSAGE_SIZE
+            override val trace: Boolean = true
         }
-        amqpClient = AMQPClient(
+        val amqpClient = AMQPClient(
                 listOf(NetworkHostAndPort("localhost", targetPort)),
                 setOf(CHARLIE_NAME),
                 amqpConfig,
-                threadPoolName = legalName.organisation
+                threadPoolName = legalName.organisation,
+                distPointCrlSource = CertDistPointCrlSource(connectTimeout = crlConnectTimeout)
         )
+        amqpClients += amqpClient
+        return Pair(amqpClient, nodeCert)
+    }
 
-        return nodeCert
+    protected fun AMQPClient.waitForInitialConnectionAndCaptureChanges(expectedConnectedStatus: Boolean): BlockingQueue<ConnectionChange> {
+        val connectionChangeStatus = LinkedBlockingQueue<ConnectionChange>()
+        onConnection.subscribe { connectionChangeStatus.add(it) }
+        start()
+        assertThat(connectionChangeStatus.take().connected).isEqualTo(expectedConnectedStatus)
+        return connectionChangeStatus
+    }
+
+    protected data class CrlDistPoints(val crlServerAddress: NetworkHostAndPort,
+                                       val nodeCa: String? = NODE_CRL,
+                                       val tls: String? = EMPTY_CRL) {
+        private val nodeCaCertCrlDistPoint: String? get() = nodeCa?.let { "http://$crlServerAddress/crl/$it" }
+        private val tlsCertCrlDistPoint: String? get() = tls?.let { "http://$crlServerAddress/crl/$it" }
+
+        fun recreateNodeCaAndTlsCertificates(signingCertificateStore: CertificateStoreSupplier,
+                                             p2pSslConfiguration: MutualSslConfiguration,
+                                             crlServer: CrlServer): X509Certificate {
+            val nodeKeyStore = signingCertificateStore.get()
+            val (nodeCert, nodeKeys) = nodeKeyStore.query { getCertificateAndKeyPair(CORDA_CLIENT_CA, nodeKeyStore.entryPassword) }
+            val newNodeCert = crlServer.replaceNodeCertDistPoint(nodeCert, nodeCaCertCrlDistPoint)
+            val nodeCertChain = listOf(newNodeCert, crlServer.intermediateCa.certificate) +
+                    nodeKeyStore.query { getCertificateChain(CORDA_CLIENT_CA) }.drop(2)
+
+            nodeKeyStore.update {
+                internal.deleteEntry(CORDA_CLIENT_CA)
+            }
+            nodeKeyStore.update {
+                setPrivateKey(CORDA_CLIENT_CA, nodeKeys.private, nodeCertChain, nodeKeyStore.entryPassword)
+            }
+
+            val sslKeyStore = p2pSslConfiguration.keyStore.get()
+            val (tlsCert, tlsKeys) = sslKeyStore.query { getCertificateAndKeyPair(CORDA_CLIENT_TLS, sslKeyStore.entryPassword) }
+            val newTlsCert = tlsCert.withCrlDistPoint(nodeKeys, tlsCertCrlDistPoint, crlServer.rootCa.certificate.subjectX500Principal)
+            val sslCertChain = listOf(newTlsCert, newNodeCert, crlServer.intermediateCa.certificate) +
+                    sslKeyStore.query { getCertificateChain(CORDA_CLIENT_TLS) }.drop(3)
+
+            sslKeyStore.update {
+                internal.deleteEntry(CORDA_CLIENT_TLS)
+            }
+            sslKeyStore.update {
+                setPrivateKey(CORDA_CLIENT_TLS, tlsKeys.private, sslCertChain, sslKeyStore.entryPassword)
+            }
+            return newNodeCert
+        }
+    }
+}
+
+
+class AMQPServerRevocationTest : AbstractServerRevocationTest() {
+    private lateinit var amqpServer: AMQPServer
+
+    @After
+    fun shutDown() {
+        if (::amqpServer.isInitialized) {
+            amqpServer.close()
+        }
+    }
+
+    override fun verifyConnection(crlCheckSoftFail: Boolean,
+                                  crlSource: CertDistPointCrlSource,
+                                  sslHandshakeTimeout: Duration?,
+                                  remotingThreads: Int?,
+                                  clientCrlDistPoints: CrlDistPoints,
+                                  revokeClientCert: Boolean,
+                                  revokeServerCert: Boolean,
+                                  expectedConnectedStatus: Boolean): BlockingQueue<ConnectionChange> {
+        val serverCert = createAMQPServer(
+                serverPort,
+                CHARLIE_NAME,
+                crlCheckSoftFail,
+                defaultCrlDistPoints,
+                crlSource,
+                sslHandshakeTimeout,
+                remotingThreads
+        )
+        if (revokeServerCert) {
+            crlServer.revokedNodeCerts.add(serverCert)
+        }
+        amqpServer.start()
+        amqpServer.onReceive.subscribe {
+            it.complete(true)
+        }
+        val (client, clientCert) = createAMQPClient(
+                serverPort,
+                crlCheckSoftFail = crlCheckSoftFail,
+                legalName = ALICE_NAME,
+                crlDistPoints = clientCrlDistPoints
+        )
+        if (revokeClientCert) {
+            crlServer.revokedNodeCerts.add(clientCert)
+        }
+
+        return client.waitForInitialConnectionAndCaptureChanges(expectedConnectedStatus)
     }
 
     private fun createAMQPServer(port: Int,
                                  legalName: CordaX500Name,
                                  crlCheckSoftFail: Boolean,
-                                 nodeCrlDistPoint: String? = "http://${crlServer.hostAndPort}/crl/$NODE_CRL",
-                                 tlsCrlDistPoint: String? = "http://${crlServer.hostAndPort}/crl/$EMPTY_CRL",
-                                 maxMessageSize: Int = MAX_MESSAGE_SIZE,
-                                 sslHandshakeTimeout: Duration? = null): X509Certificate {
+                                 crlDistPoints: CrlDistPoints,
+                                 distPointCrlSource: CertDistPointCrlSource,
+                                 sslHandshakeTimeout: Duration?,
+                                 remotingThreads: Int?): X509Certificate {
         check(!::amqpServer.isInitialized)
         val baseDirectory = temporaryFolder.root.toPath() / legalName.organisation
         val certificatesDirectory = baseDirectory / "certificates"
@@ -381,92 +422,101 @@ class CertificateRevocationListNodeTests {
             doReturn(signingCertificateStore).whenever(it).signingCertificateStore
         }
         serverConfig.configureWithDevSSLCertificate()
-        val nodeCert = recreateNodeCaAndTlsCertificates(signingCertificateStore, p2pSslConfiguration, nodeCrlDistPoint, tlsCrlDistPoint)
+        val serverCert = crlDistPoints.recreateNodeCaAndTlsCertificates(signingCertificateStore, p2pSslConfiguration, crlServer)
         val keyStore = serverConfig.p2pSslOptions.keyStore.get()
         val amqpConfig = object : AMQPConfiguration {
             override val keyStore = keyStore
             override val trustStore = serverConfig.p2pSslOptions.trustStore.get()
             override val revocationConfig = crlCheckSoftFail.toRevocationConfig()
-            override val maxMessageSize: Int = maxMessageSize
+            override val maxMessageSize: Int = MAX_MESSAGE_SIZE
             override val sslHandshakeTimeout: Duration = sslHandshakeTimeout ?: super.sslHandshakeTimeout
         }
-        amqpServer = AMQPServer("0.0.0.0", port, amqpConfig, threadPoolName = legalName.organisation)
-        return nodeCert
-    }
-
-    private fun recreateNodeCaAndTlsCertificates(signingCertificateStore: CertificateStoreSupplier,
-                                                 p2pSslConfiguration: MutualSslConfiguration,
-                                                 nodeCaCrlDistPoint: String?,
-                                                 tlsCrlDistPoint: String?): X509Certificate {
-        val nodeKeyStore = signingCertificateStore.get()
-        val (nodeCert, nodeKeys) = nodeKeyStore.query { getCertificateAndKeyPair(X509Utilities.CORDA_CLIENT_CA, nodeKeyStore.entryPassword) }
-        val newNodeCert = crlServer.replaceNodeCertDistPoint(nodeCert, nodeCaCrlDistPoint)
-        val nodeCertChain = listOf(newNodeCert, crlServer.intermediateCa.certificate) +
-                nodeKeyStore.query { getCertificateChain(X509Utilities.CORDA_CLIENT_CA) }.drop(2)
-
-        nodeKeyStore.update {
-            internal.deleteEntry(X509Utilities.CORDA_CLIENT_CA)
-        }
-        nodeKeyStore.update {
-            setPrivateKey(X509Utilities.CORDA_CLIENT_CA, nodeKeys.private, nodeCertChain, nodeKeyStore.entryPassword)
-        }
-
-        val sslKeyStore = p2pSslConfiguration.keyStore.get()
-        val (tlsCert, tlsKeys) = sslKeyStore.query { getCertificateAndKeyPair(X509Utilities.CORDA_CLIENT_TLS, sslKeyStore.entryPassword) }
-        val newTlsCert = tlsCert.withCrlDistPoint(nodeKeys, tlsCrlDistPoint, crlServer.rootCa.certificate.subjectX500Principal)
-        val sslCertChain = listOf(newTlsCert, newNodeCert, crlServer.intermediateCa.certificate) +
-                sslKeyStore.query { getCertificateChain(X509Utilities.CORDA_CLIENT_TLS) }.drop(3)
-
-        sslKeyStore.update {
-            internal.deleteEntry(X509Utilities.CORDA_CLIENT_TLS)
-        }
-        sslKeyStore.update {
-            setPrivateKey(X509Utilities.CORDA_CLIENT_TLS, tlsKeys.private, sslCertChain, sslKeyStore.entryPassword)
-        }
-        return newNodeCert
-    }
-
-    private fun verifyAMQPConnection(crlCheckSoftFail: Boolean,
-                                     nodeCrlDistPoint: String? = "http://${crlServer.hostAndPort}/crl/$NODE_CRL",
-                                     revokeServerCert: Boolean = false,
-                                     revokeClientCert: Boolean = false,
-                                     sslHandshakeTimeout: Duration? = null,
-                                     expectedConnectStatus: Boolean) {
-        val serverCert = createAMQPServer(
-                serverPort,
-                CHARLIE_NAME,
-                crlCheckSoftFail = crlCheckSoftFail,
-                nodeCrlDistPoint = nodeCrlDistPoint,
-                sslHandshakeTimeout = sslHandshakeTimeout
+        amqpServer = AMQPServer(
+                "0.0.0.0",
+                port,
+                amqpConfig,
+                threadPoolName = legalName.organisation,
+                distPointCrlSource = distPointCrlSource,
+                remotingThreads = remotingThreads
         )
-        if (revokeServerCert) {
-            crlServer.revokedNodeCerts.add(serverCert.serialNumber)
+        return serverCert
+    }
+}
+
+
+class ArtemisServerRevocationTest : AbstractServerRevocationTest() {
+    private lateinit var artemisNode: ArtemisNode
+    private var crlCheckArtemisServer = true
+
+    @After
+    fun shutDown() {
+        if (::artemisNode.isInitialized) {
+            artemisNode.close()
         }
-        amqpServer.start()
-        amqpServer.onReceive.subscribe {
-            it.complete(true)
-        }
-        val clientCert = createAMQPClient(
+    }
+
+    @Test(timeout = 300_000)
+    fun `connection succeeds with disabled CRL check on revoked node certificate`() {
+        crlCheckArtemisServer = false
+        verifyConnection(
+                crlCheckSoftFail = false,
+                revokeClientCert = true,
+                expectedConnectedStatus = true
+        )
+    }
+
+    override fun verifyConnection(crlCheckSoftFail: Boolean,
+                                  crlSource: CertDistPointCrlSource,
+                                  sslHandshakeTimeout: Duration?,
+                                  remotingThreads: Int?,
+                                  clientCrlDistPoints: CrlDistPoints,
+                                  revokeClientCert: Boolean,
+                                  revokeServerCert: Boolean,
+                                  expectedConnectedStatus: Boolean): BlockingQueue<ConnectionChange> {
+        val (client, clientCert) = createAMQPClient(
                 serverPort,
-                crlCheckSoftFail = crlCheckSoftFail,
+                crlCheckSoftFail = true,
                 legalName = ALICE_NAME,
-                nodeCrlDistPoint = nodeCrlDistPoint
+                crlDistPoints = clientCrlDistPoints
         )
         if (revokeClientCert) {
-            crlServer.revokedNodeCerts.add(clientCert.serialNumber)
+            crlServer.revokedNodeCerts.add(clientCert)
         }
-        val serverConnected = amqpServer.onConnection.toFuture()
-        amqpClient.start()
-        val serverConnect = serverConnected.get()
-        assertThat(serverConnect.connected).isEqualTo(expectedConnectStatus)
+
+        val nodeCert = startArtemisNode(
+                CHARLIE_NAME,
+                crlCheckSoftFail,
+                defaultCrlDistPoints,
+                crlSource,
+                sslHandshakeTimeout,
+                remotingThreads
+        )
+        if (revokeServerCert) {
+            crlServer.revokedNodeCerts.add(nodeCert)
+        }
+
+        val queueName = "${P2P_PREFIX}Test"
+        artemisNode.client.started!!.session.createQueue(queueName, RoutingType.ANYCAST, queueName, true)
+
+        val clientConnectionChangeStatus = client.waitForInitialConnectionAndCaptureChanges(expectedConnectedStatus)
+
+        if (expectedConnectedStatus) {
+            val msg = client.createMessage("Test".toByteArray(), queueName, CHARLIE_NAME.toString(), emptyMap())
+            client.write(msg)
+            assertThat(msg.onComplete.get()).isEqualTo(MessageStatus.Acknowledged)
+        }
+
+        return clientConnectionChangeStatus
     }
 
-    private fun createArtemisServerAndClient(legalName: CordaX500Name,
-                                             crlCheckSoftFail: Boolean,
-                                             crlCheckArtemisServer: Boolean,
-                                             nodeCrlDistPoint: String,
-                                             sslHandshakeTimeout: Duration?): Pair<ArtemisMessagingServer, ArtemisMessagingClient> {
-        val baseDirectory = temporaryFolder.root.toPath() / "artemis"
+    private fun startArtemisNode(legalName: CordaX500Name,
+                                 crlCheckSoftFail: Boolean,
+                                 crlDistPoints: CrlDistPoints,
+                                 distPointCrlSource: CertDistPointCrlSource,
+                                 sslHandshakeTimeout: Duration?,
+                                 remotingThreads: Int?): X509Certificate {
+        check(!::artemisNode.isInitialized)
+        val baseDirectory = temporaryFolder.root.toPath() / legalName.organisation
         val certificatesDirectory = baseDirectory / "certificates"
         val signingCertificateStore = CertificateStoreStubs.Signing.withCertificatesDirectory(certificatesDirectory)
         val p2pSslConfiguration = CertificateStoreStubs.P2P.withCertificatesDirectory(certificatesDirectory, sslHandshakeTimeout = sslHandshakeTimeout)
@@ -482,60 +532,34 @@ class CertificateRevocationListNodeTests {
             doReturn(crlCheckArtemisServer).whenever(it).crlCheckArtemisServer
         }
         artemisConfig.configureWithDevSSLCertificate()
-        recreateNodeCaAndTlsCertificates(signingCertificateStore, p2pSslConfiguration, nodeCrlDistPoint, null)
+        val nodeCert = crlDistPoints.recreateNodeCaAndTlsCertificates(signingCertificateStore, p2pSslConfiguration, crlServer)
 
         val server = ArtemisMessagingServer(
                 artemisConfig,
                 artemisConfig.p2pAddress,
                 MAX_MESSAGE_SIZE,
                 threadPoolName = "${legalName.organisation}-server",
-                trace = true
+                trace = true,
+                distPointCrlSource = distPointCrlSource,
+                remotingThreads = remotingThreads
         )
         val client = ArtemisMessagingClient(
                 artemisConfig.p2pSslOptions,
                 artemisConfig.p2pAddress,
                 MAX_MESSAGE_SIZE,
-                threadPoolName = "${legalName.organisation}-client",
-                trace = true
+                threadPoolName = "${legalName.organisation}-client"
         )
         server.start()
         client.start()
-        return server to client
+        val artemisNode = ArtemisNode(server, client)
+        this.artemisNode = artemisNode
+        return nodeCert
     }
 
-    private fun verifyArtemisConnection(crlCheckSoftFail: Boolean,
-                                        crlCheckArtemisServer: Boolean,
-                                        expectedConnected: Boolean = true,
-                                        expectedStatus: MessageStatus? = null,
-                                        revokedNodeCert: Boolean = false,
-                                        nodeCrlDistPoint: String = "http://${crlServer.hostAndPort}/crl/$NODE_CRL",
-                                        sslHandshakeTimeout: Duration? = null) {
-        val queueName = P2P_PREFIX + "Test"
-        val (artemisServer, artemisClient) = createArtemisServerAndClient(
-                CHARLIE_NAME,
-                crlCheckSoftFail,
-                crlCheckArtemisServer,
-                nodeCrlDistPoint,
-                sslHandshakeTimeout
-        )
-        artemisServer.use {
-            artemisClient.started!!.session.createQueue(queueName, RoutingType.ANYCAST, queueName, true)
-
-            val nodeCert = createAMQPClient(serverPort, true, ALICE_NAME, nodeCrlDistPoint)
-            if (revokedNodeCert) {
-                crlServer.revokedNodeCerts.add(nodeCert.serialNumber)
-            }
-            val clientConnected = amqpClient.onConnection.toFuture()
-            amqpClient.start()
-            val clientConnect = clientConnected.get()
-            assertThat(clientConnect.connected).isEqualTo(expectedConnected)
-
-            if (expectedConnected) {
-                val msg = amqpClient.createMessage("Test".toByteArray(), queueName, CHARLIE_NAME.toString(), emptyMap())
-                amqpClient.write(msg)
-                assertEquals(expectedStatus, msg.onComplete.get())
-            }
-            artemisClient.stop()
+    private class ArtemisNode(val server: ArtemisMessagingServer, val client: ArtemisMessagingClient) : Closeable {
+        override fun close() {
+            client.stop()
+            server.close()
         }
     }
 }

node/src/integration-test/kotlin/net/corda/node/amqp/ProtonWrapperTests.kt

@@ -4,12 +4,15 @@ import com.nhaarman.mockito_kotlin.doReturn
 import com.nhaarman.mockito_kotlin.whenever
 import io.netty.channel.EventLoopGroup
 import io.netty.channel.nio.NioEventLoopGroup
+import io.netty.util.concurrent.DefaultThreadFactory
 import net.corda.core.crypto.newSecureRandom
 import net.corda.core.identity.CordaX500Name
 import net.corda.core.internal.div
 import net.corda.core.toFuture
 import net.corda.core.utilities.NetworkHostAndPort
 import net.corda.core.utilities.contextLogger
+import net.corda.coretesting.internal.rigorousMock
+import net.corda.coretesting.internal.stubs.CertificateStoreStubs
 import net.corda.node.services.config.NodeConfiguration
 import net.corda.node.services.config.configureWithDevSSLCertificate
 import net.corda.node.services.messaging.ArtemisMessagingServer
@@ -23,7 +26,9 @@ import net.corda.nodeapi.internal.protonwrapper.messages.MessageStatus
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPClient
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPConfiguration
 import net.corda.nodeapi.internal.protonwrapper.netty.AMQPServer
-import net.corda.nodeapi.internal.protonwrapper.netty.init
+import net.corda.nodeapi.internal.protonwrapper.netty.keyManagerFactory
+import net.corda.nodeapi.internal.protonwrapper.netty.toRevocationConfig
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactory
 import net.corda.nodeapi.internal.registerDevP2pCertificates
 import net.corda.testing.core.ALICE_NAME
 import net.corda.testing.core.BOB_NAME
@@ -31,9 +36,6 @@ import net.corda.testing.core.CHARLIE_NAME
 import net.corda.testing.core.MAX_MESSAGE_SIZE
 import net.corda.testing.driver.internal.incrementalPortAllocation
 import net.corda.testing.internal.createDevIntermediateCaCertPath
-import net.corda.coretesting.internal.rigorousMock
-import net.corda.coretesting.internal.stubs.CertificateStoreStubs
-import net.corda.nodeapi.internal.protonwrapper.netty.toRevocationConfig
 import org.apache.activemq.artemis.api.core.RoutingType
 import org.assertj.core.api.Assertions.assertThatThrownBy
 import org.junit.Assert.assertArrayEquals
@@ -42,7 +44,11 @@ import org.junit.Test
 import org.junit.rules.TemporaryFolder
 import java.security.cert.X509Certificate
 import java.util.concurrent.TimeUnit
-import javax.net.ssl.*
+import javax.net.ssl.SSLContext
+import javax.net.ssl.SSLHandshakeException
+import javax.net.ssl.SSLParameters
+import javax.net.ssl.SSLServerSocket
+import javax.net.ssl.SSLSocket
 import kotlin.concurrent.thread
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue
@@ -144,15 +150,10 @@ class ProtonWrapperTests {
         sslConfig.keyStore.get(true).also { it.registerDevP2pCertificates(ALICE_NAME, rootCa.certificate, intermediateCa) }
         sslConfig.createTrustStore(rootCa.certificate)
 
-        val keyStore = sslConfig.keyStore.get()
-        val trustStore = sslConfig.trustStore.get()
-
         val context = SSLContext.getInstance("TLS")
-        val keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
-        keyManagerFactory.init(keyStore)
+        val keyManagerFactory = keyManagerFactory(sslConfig.keyStore.get())
         val keyManagers = keyManagerFactory.keyManagers
-        val trustMgrFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
-        trustMgrFactory.init(trustStore)
+        val trustMgrFactory = trustManagerFactory(sslConfig.trustStore.get())
         val trustManagers = trustMgrFactory.trustManagers
         context.init(keyManagers, trustManagers, newSecureRandom())
 
@@ -339,7 +340,7 @@ class ProtonWrapperTests {
         amqpServer.use {
             val connectionEvents = amqpServer.onConnection.toBlocking().iterator
             amqpServer.start()
-            val sharedThreads = NioEventLoopGroup()
+            val sharedThreads = NioEventLoopGroup(DefaultThreadFactory("sharedThreads"))
             val amqpClient1 = createSharedThreadsClient(sharedThreads, 0)
             val amqpClient2 = createSharedThreadsClient(sharedThreads, 1)
             amqpClient1.start()

node/src/main/kotlin/net/corda/node/internal/AbstractNode.kt

@@ -4,7 +4,6 @@ import co.paralleluniverse.fibers.instrument.Retransform
 import com.codahale.metrics.MetricRegistry
 import com.google.common.collect.MutableClassToInstanceMap
 import com.google.common.util.concurrent.MoreExecutors
-import com.google.common.util.concurrent.ThreadFactoryBuilder
 import com.zaxxer.hikari.pool.HikariPool
 import net.corda.common.logging.errorReporting.NodeDatabaseErrors
 import net.corda.confidential.SwapIdentitiesFlow
@@ -67,6 +66,7 @@ import net.corda.core.toFuture
 import net.corda.core.transactions.LedgerTransaction
 import net.corda.core.utilities.NetworkHostAndPort
 import net.corda.core.utilities.days
+import net.corda.core.utilities.millis
 import net.corda.core.utilities.minutes
 import net.corda.djvm.source.ApiSource
 import net.corda.djvm.source.EmptyApi
@@ -166,6 +166,7 @@ import net.corda.nodeapi.internal.persistence.RestrictedEntityManager
 import net.corda.nodeapi.internal.persistence.SchemaMigration
 import net.corda.nodeapi.internal.persistence.contextDatabase
 import net.corda.nodeapi.internal.persistence.withoutDatabaseAccess
+import net.corda.nodeapi.internal.namedThreadPoolExecutor
 import net.corda.tools.shell.InteractiveShell
 import org.apache.activemq.artemis.utils.ReusableLatch
 import org.jolokia.jvmagent.JolokiaServer
@@ -181,9 +182,6 @@ import java.time.format.DateTimeParseException
 import java.util.Properties
 import java.util.concurrent.ExecutorService
 import java.util.concurrent.Executors
-import java.util.concurrent.LinkedBlockingQueue
-import java.util.concurrent.ThreadPoolExecutor
-import java.util.concurrent.TimeUnit
 import java.util.concurrent.TimeUnit.MINUTES
 import java.util.concurrent.TimeUnit.SECONDS
 import java.util.function.Consumer
@@ -881,13 +879,12 @@ abstract class AbstractNode<S>(val configuration: NodeConfiguration,
         }
         // Start with 1 thread and scale up to the configured thread pool size if needed
         // Parameters of [ThreadPoolExecutor] based on [Executors.newFixedThreadPool]
-        return ThreadPoolExecutor(
-            1,
-            numberOfThreads,
-            0L,
-            TimeUnit.MILLISECONDS,
-            LinkedBlockingQueue<Runnable>(),
-            ThreadFactoryBuilder().setNameFormat("flow-external-operation-thread").setDaemon(true).build()
+        return namedThreadPoolExecutor(
+                corePoolSize = 1,
+                maxPoolSize = numberOfThreads,
+                idleKeepAlive = 0.millis,
+                poolName = "flow-external-operation-thread",
+                daemonThreads = true
         )
     }
 

node/src/main/kotlin/net/corda/node/internal/artemis/BrokerJaasLoginModule.kt

@@ -135,12 +135,12 @@ class BrokerJaasLoginModule : BaseBrokerJaasLoginModule() {
                 Pair(ArtemisMessagingComponent.NODE_RPC_USER, listOf(RolePrincipal(NODE_RPC_ROLE)))
             }
             ArtemisMessagingComponent.PEER_USER -> {
-                requireNotNull(p2pJaasConfig) { "Attempted to connect as a peer to the rpc broker." }
+                val p2pJaasConfig = requireNotNull(p2pJaasConfig) { "Attempted to connect as a peer to the rpc broker." }
                 requireTls(certificates)
                 // This check is redundant as it was performed already during the SSL handshake
-                CertificateChainCheckPolicy.RootMustMatch.createCheck(p2pJaasConfig!!.keyStore, p2pJaasConfig!!.trustStore).checkCertificateChain(certificates!!)
-                CertificateChainCheckPolicy.RevocationCheck(p2pJaasConfig!!.revocationMode)
-                        .createCheck(p2pJaasConfig!!.keyStore, p2pJaasConfig!!.trustStore).checkCertificateChain(certificates)
+                CertificateChainCheckPolicy.RootMustMatch
+                        .createCheck(p2pJaasConfig.keyStore, p2pJaasConfig.trustStore)
+                        .checkCertificateChain(certificates!!)
                 Pair(certificates.first().subjectDN.name, listOf(RolePrincipal(PEER_ROLE)))
             }
             else -> {

node/src/main/kotlin/net/corda/node/internal/artemis/CertificateChainCheckPolicy.kt

@@ -2,17 +2,9 @@ package net.corda.node.internal.artemis
 
 import net.corda.core.identity.CordaX500Name
 import net.corda.core.utilities.contextLogger
-import net.corda.nodeapi.internal.crypto.X509CertificateFactory
 import net.corda.nodeapi.internal.crypto.X509Utilities
-import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfig
-import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfigImpl
-import net.corda.nodeapi.internal.protonwrapper.netty.certPathToString
 import java.security.KeyStore
-import java.security.cert.CertPathValidator
-import java.security.cert.CertPathValidatorException
 import java.security.cert.CertificateException
-import java.security.cert.PKIXBuilderParameters
-import java.security.cert.X509CertSelector
 
 sealed class CertificateChainCheckPolicy {
     companion object {
@@ -92,33 +84,4 @@ sealed class CertificateChainCheckPolicy {
             }
         }
     }
-
-    class RevocationCheck(val revocationConfig: RevocationConfig) : CertificateChainCheckPolicy() {
-        constructor(revocationMode: RevocationConfig.Mode) : this(RevocationConfigImpl(revocationMode))
-
-        override fun createCheck(keyStore: KeyStore, trustStore: KeyStore): Check {
-            return object : Check {
-                override fun checkCertificateChain(theirChain: Array<javax.security.cert.X509Certificate>) {
-                    // Convert javax.security.cert.X509Certificate to java.security.cert.X509Certificate.
-                    val chain = theirChain.map { X509CertificateFactory().generateCertificate(it.encoded.inputStream()) }
-                    log.info("Check Client Certpath:\r\n${certPathToString(chain.toTypedArray())}")
-
-                    // Drop the last certificate which must be a trusted root (validated by RootMustMatch).
-                    // Assume that there is no more trusted roots (or corresponding public keys) in the remaining chain.
-                    // See PKIXValidator.engineValidate() for reference implementation.
-                    val certPath = X509Utilities.buildCertPath(chain.dropLast(1))
-                    val certPathValidator = CertPathValidator.getInstance("PKIX")
-                    val pkixRevocationChecker = revocationConfig.createPKIXRevocationChecker()
-                    val params = PKIXBuilderParameters(trustStore, X509CertSelector())
-                    params.addCertPathChecker(pkixRevocationChecker)
-                    try {
-                        certPathValidator.validate(certPath, params)
-                    } catch (ex: CertPathValidatorException) {
-                        log.error("Bad certificate path", ex)
-                        throw ex
-                    }
-                }
-            }
-        }
-    }
 }

node/src/main/kotlin/net/corda/node/services/messaging/ArtemisMessagingServer.kt

@@ -7,9 +7,16 @@ import net.corda.core.serialization.SingletonSerializeAsToken
 import net.corda.core.utilities.NetworkHostAndPort
 import net.corda.core.utilities.contextLogger
 import net.corda.core.utilities.debug
-import net.corda.node.internal.artemis.*
+import net.corda.node.internal.artemis.ArtemisBroker
+import net.corda.node.internal.artemis.BrokerAddresses
+import net.corda.node.internal.artemis.BrokerJaasLoginModule
 import net.corda.node.internal.artemis.BrokerJaasLoginModule.Companion.NODE_P2P_ROLE
 import net.corda.node.internal.artemis.BrokerJaasLoginModule.Companion.PEER_ROLE
+import net.corda.node.internal.artemis.NodeJaasConfig
+import net.corda.node.internal.artemis.P2PJaasConfig
+import net.corda.node.internal.artemis.SecureArtemisConfiguration
+import net.corda.node.internal.artemis.UserValidationPlugin
+import net.corda.node.internal.artemis.isBindingError
 import net.corda.node.services.config.NodeConfiguration
 import net.corda.nodeapi.internal.AmqpMessageSizeChecksInterceptor
 import net.corda.nodeapi.internal.ArtemisMessageSizeChecksInterceptor
@@ -20,7 +27,10 @@ import net.corda.nodeapi.internal.ArtemisMessagingComponent.Companion.P2P_PREFIX
 import net.corda.nodeapi.internal.ArtemisMessagingComponent.Companion.SECURITY_INVALIDATION_INTERVAL
 import net.corda.nodeapi.internal.ArtemisTcpTransport.Companion.p2pAcceptorTcpTransport
 import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfig
+import net.corda.nodeapi.internal.protonwrapper.netty.RevocationConfigImpl
+import net.corda.nodeapi.internal.protonwrapper.netty.trustManagerFactoryWithRevocation
 import net.corda.nodeapi.internal.requireOnDefaultFileSystem
+import net.corda.nodeapi.internal.revocation.CertDistPointCrlSource
 import org.apache.activemq.artemis.api.config.ActiveMQDefaultConfiguration
 import org.apache.activemq.artemis.api.core.SimpleString
 import org.apache.activemq.artemis.api.core.management.ActiveMQServerControl
@@ -33,7 +43,6 @@ import org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl
 import org.apache.activemq.artemis.spi.core.security.ActiveMQJAASSecurityManager
 import java.io.IOException
 import java.lang.Long.max
-import java.security.KeyStoreException
 import javax.annotation.concurrent.ThreadSafe
 import javax.security.auth.login.AppConfigurationEntry
 import javax.security.auth.login.AppConfigurationEntry.LoginModuleControlFlag.REQUIRED
@@ -57,7 +66,9 @@ class ArtemisMessagingServer(private val config: NodeConfiguration,
                              private val maxMessageSize: Int,
                              private val journalBufferTimeout : Int? = null,
                              private val threadPoolName: String = "ArtemisServer",
-                             private val trace: Boolean = false) : ArtemisBroker, SingletonSerializeAsToken() {
+                             private val trace: Boolean = false,
+                             private val distPointCrlSource: CertDistPointCrlSource = CertDistPointCrlSource.SINGLETON,
+                             private val remotingThreads: Int? = null) : ArtemisBroker, SingletonSerializeAsToken() {
     companion object {
         private val log = contextLogger()
     }
@@ -91,9 +102,7 @@ class ArtemisMessagingServer(private val config: NodeConfiguration,
     override val started: Boolean
         get() = activeMQServer.isStarted
 
-    // TODO: Maybe wrap [IOException] on a key store load error so that it's clearly splitting key store loading from
-    // Artemis IO errors
-    @Throws(IOException::class, AddressBindingException::class, KeyStoreException::class)
+    @Suppress("ThrowsCount")
     private fun configureAndStartServer() {
         val artemisConfig = createArtemisConfig()
         val securityManager = createArtemisSecurityManager()
@@ -133,11 +142,23 @@ class ArtemisMessagingServer(private val config: NodeConfiguration,
         // The transaction cache is configurable, and drives other cache sizes.
         globalMaxSize = max(config.transactionCacheSizeBytes, 10L * maxMessageSize)
 
+        val revocationMode = if (config.crlCheckArtemisServer) {
+            if (config.crlCheckSoftFail) RevocationConfig.Mode.SOFT_FAIL else RevocationConfig.Mode.HARD_FAIL
+        } else {
+            RevocationConfig.Mode.OFF
+        }
+        val trustManagerFactory = trustManagerFactoryWithRevocation(
+                config.p2pSslOptions.trustStore.get(),
+                RevocationConfigImpl(revocationMode),
+                distPointCrlSource
+        )
         addAcceptorConfiguration(p2pAcceptorTcpTransport(
                 NetworkHostAndPort(messagingServerAddress.host, messagingServerAddress.port),
                 config.p2pSslOptions,
+                trustManagerFactory,
                 threadPoolName = threadPoolName,
-                trace = trace
+                trace = trace,
+                remotingThreads = remotingThreads
         ))
         // Enable built in message deduplication. Note we still have to do our own as the delayed commits
         // and our own definition of commit mean that the built in deduplication cannot remove all duplicates.

node/src/main/kotlin/net/corda/node/services/messaging/NodeNettyAcceptorFactory.kt

@@ -5,13 +5,24 @@ import io.netty.channel.ChannelHandlerContext
 import io.netty.channel.group.ChannelGroup
 import io.netty.handler.logging.LogLevel
 import io.netty.handler.logging.LoggingHandler
+import io.netty.handler.ssl.SslContext
+import io.netty.handler.ssl.SslContextBuilder
 import io.netty.handler.ssl.SslHandler
 import io.netty.handler.ssl.SslHandshakeTimeoutException
+import io.netty.handler.ssl.SslProvider
 import net.corda.core.internal.declaredField
 import net.corda.core.utilities.contextLogger
 import net.corda.nodeapi.internal.ArtemisTcpTransport
+import net.corda.nodeapi.internal.config.CertificateStore
+import net.corda.nodeapi.internal.protonwrapper.netty.createAndInitSslContext
+import net.corda.nodeapi.internal.protonwrapper.netty.keyManagerFactory
+import net.corda.nodeapi.internal.protonwrapper.netty.sslDelegatedTaskExecutor
+import org.apache.activemq.artemis.api.config.ActiveMQDefaultConfiguration
 import org.apache.activemq.artemis.api.core.BaseInterceptor
 import org.apache.activemq.artemis.core.remoting.impl.netty.NettyAcceptor
+import org.apache.activemq.artemis.core.remoting.impl.netty.TransportConstants
+import org.apache.activemq.artemis.core.remoting.impl.ssl.SSLSupport
+import org.apache.activemq.artemis.core.server.ActiveMQServerLogger
 import org.apache.activemq.artemis.core.server.cluster.ClusterConnection
 import org.apache.activemq.artemis.spi.core.protocol.ProtocolManager
 import org.apache.activemq.artemis.spi.core.remoting.Acceptor
@@ -21,13 +32,19 @@ import org.apache.activemq.artemis.spi.core.remoting.ServerConnectionLifeCycleLi
 import org.apache.activemq.artemis.utils.ConfigurationHelper
 import org.apache.activemq.artemis.utils.actors.OrderedExecutor
 import java.nio.channels.ClosedChannelException
+import java.nio.file.Paths
+import java.security.PrivilegedExceptionAction
 import java.time.Duration
 import java.util.concurrent.Executor
 import java.util.concurrent.ScheduledExecutorService
 import java.util.regex.Pattern
+import javax.net.ssl.KeyManagerFactory
+import javax.net.ssl.SSLContext
 import javax.net.ssl.SSLEngine
+import javax.net.ssl.TrustManagerFactory
+import javax.security.auth.Subject
 
-@Suppress("unused")  // Used via reflection in ArtemisTcpTransport
+@Suppress("unused", "TooGenericExceptionCaught", "ComplexMethod", "MagicNumber", "TooManyFunctions")
 class NodeNettyAcceptorFactory : AcceptorFactory {
     override fun createAcceptor(name: String?,
                                 clusterConnection: ClusterConnection?,
@@ -57,6 +74,7 @@ class NodeNettyAcceptorFactory : AcceptorFactory {
         }
 
         private val threadPoolName = ConfigurationHelper.getStringProperty(ArtemisTcpTransport.THREAD_POOL_NAME_NAME, "NodeNettyAcceptor", configuration)
+        private val sslDelegatedTaskExecutor = sslDelegatedTaskExecutor(threadPoolName)
         private val trace = ConfigurationHelper.getBooleanProperty(ArtemisTcpTransport.TRACE_NAME, false, configuration)
 
         @Synchronized
@@ -70,11 +88,17 @@ class NodeNettyAcceptorFactory : AcceptorFactory {
             }
         }
 
+        @Synchronized
+        override fun stop() {
+            super.stop()
+            sslDelegatedTaskExecutor.shutdown()
+        }
+
         @Synchronized
         override fun getSslHandler(alloc: ByteBufAllocator?): SslHandler {
             applyThreadPoolName()
-            val engine = super.getSslHandler(alloc).engine()
-            val sslHandler = NodeAcceptorSslHandler(engine, trace)
+            val engine = getSSLEngine(alloc)
+            val sslHandler = NodeAcceptorSslHandler(engine, sslDelegatedTaskExecutor, trace)
             val handshakeTimeout = configuration[ArtemisTcpTransport.SSL_HANDSHAKE_TIMEOUT_NAME] as Duration?
             if (handshakeTimeout != null) {
                 sslHandler.handshakeTimeoutMillis = handshakeTimeout.toMillis()
@@ -91,10 +115,117 @@ class NodeNettyAcceptorFactory : AcceptorFactory {
                 Thread.currentThread().name = "$threadPoolName-${matcher.group(1)}" // Preserve the pool thread number
             }
         }
+
+        /**
+         * This is a copy of [NettyAcceptor.getSslHandler] so that we can provide different implementations for [loadOpenSslEngine] and
+         * [loadJdkSslEngine]. [NodeNettyAcceptor], instead of creating a default [TrustManagerFactory], will simply use the provided one in
+         * the [ArtemisTcpTransport.TRUST_MANAGER_FACTORY_NAME] configuration.
+         */
+        private fun getSSLEngine(alloc: ByteBufAllocator?): SSLEngine {
+            val engine = if (sslProvider == TransportConstants.OPENSSL_PROVIDER) {
+                loadOpenSslEngine(alloc)
+            } else {
+                loadJdkSslEngine()
+            }
+            engine.useClientMode = false
+            if (needClientAuth) {
+                engine.needClientAuth = true
+            }
+
+            // setting the enabled cipher suites resets the enabled protocols so we need
+            // to save the enabled protocols so that after the customer cipher suite is enabled
+            // we can reset the enabled protocols if a customer protocol isn't specified
+            val originalProtocols = engine.enabledProtocols
+            if (enabledCipherSuites != null) {
+                try {
+                    engine.enabledCipherSuites = SSLSupport.parseCommaSeparatedListIntoArray(enabledCipherSuites)
+                } catch (e: IllegalArgumentException) {
+                    ActiveMQServerLogger.LOGGER.invalidCipherSuite(SSLSupport.parseArrayIntoCommandSeparatedList(engine.supportedCipherSuites))
+                    throw e
+                }
+            }
+            if (enabledProtocols != null) {
+                try {
+                    engine.enabledProtocols = SSLSupport.parseCommaSeparatedListIntoArray(enabledProtocols)
+                } catch (e: IllegalArgumentException) {
+                    ActiveMQServerLogger.LOGGER.invalidProtocol(SSLSupport.parseArrayIntoCommandSeparatedList(engine.supportedProtocols))
+                    throw e
+                }
+            } else {
+                engine.enabledProtocols = originalProtocols
+            }
+            return engine
+        }
+
+        /**
+         * Copy of [NettyAcceptor.loadOpenSslEngine] which invokes our custom [createOpenSslContext].
+         */
+        private fun loadOpenSslEngine(alloc: ByteBufAllocator?): SSLEngine {
+            val context = try {
+                // We copied all this code just so we could replace the SSLSupport.createNettyContext method call with our own one.
+                createOpenSslContext()
+            } catch (e: Exception) {
+                throw IllegalStateException("Unable to create NodeNettyAcceptor", e)
+            }
+            return Subject.doAs<SSLEngine>(null, PrivilegedExceptionAction {
+                context.newEngine(alloc)
+            })
+        }
+
+        /**
+         * Copy of [NettyAcceptor.loadJdkSslEngine] which invokes our custom [createJdkSSLContext].
+         */
+        private fun loadJdkSslEngine(): SSLEngine {
+            val context = try {
+                // We copied all this code just so we could replace the SSLHelper.createContext method call with our own one.
+                createJdkSSLContext()
+            } catch (e: Exception) {
+                throw IllegalStateException("Unable to create NodeNettyAcceptor", e)
+            }
+            return Subject.doAs<SSLEngine>(null, PrivilegedExceptionAction {
+                context.createSSLEngine()
+            })
+        }
+
+        /**
+         * Create an [SSLContext] using the [TrustManagerFactory] provided on the [ArtemisTcpTransport.TRUST_MANAGER_FACTORY_NAME] config.
+         */
+        private fun createJdkSSLContext(): SSLContext {
+            return createAndInitSslContext(
+                    createKeyManagerFactory(),
+                    configuration[ArtemisTcpTransport.TRUST_MANAGER_FACTORY_NAME] as TrustManagerFactory?
+            )
+        }
+
+        /**
+         * Create an [SslContext] using the the [TrustManagerFactory] provided on the [ArtemisTcpTransport.TRUST_MANAGER_FACTORY_NAME] config.
+         */
+        private fun createOpenSslContext(): SslContext {
+            return SslContextBuilder
+                    .forServer(createKeyManagerFactory())
+                    .sslProvider(SslProvider.OPENSSL)
+                    .trustManager(configuration[ArtemisTcpTransport.TRUST_MANAGER_FACTORY_NAME] as TrustManagerFactory?)
+                    .build()
+        }
+
+        private fun createKeyManagerFactory(): KeyManagerFactory {
+            return keyManagerFactory(CertificateStore.fromFile(Paths.get(keyStorePath), keyStorePassword, keyStorePassword, false))
+        }
+
+        // Replicate the fields which are private in NettyAcceptor
+        private val sslProvider = ConfigurationHelper.getStringProperty(TransportConstants.SSL_PROVIDER, TransportConstants.DEFAULT_SSL_PROVIDER, configuration)
+        private val needClientAuth = ConfigurationHelper.getBooleanProperty(TransportConstants.NEED_CLIENT_AUTH_PROP_NAME, TransportConstants.DEFAULT_NEED_CLIENT_AUTH, configuration)
+        private val enabledCipherSuites = ConfigurationHelper.getStringProperty(TransportConstants.ENABLED_CIPHER_SUITES_PROP_NAME, TransportConstants.DEFAULT_ENABLED_CIPHER_SUITES, configuration)
+        private val enabledProtocols = ConfigurationHelper.getStringProperty(TransportConstants.ENABLED_PROTOCOLS_PROP_NAME, TransportConstants.DEFAULT_ENABLED_PROTOCOLS, configuration)
+        private val keyStorePath = ConfigurationHelper.getStringProperty(TransportConstants.KEYSTORE_PATH_PROP_NAME, TransportConstants.DEFAULT_KEYSTORE_PATH, configuration)
+        private val keyStoreProvider = ConfigurationHelper.getStringProperty(TransportConstants.KEYSTORE_PROVIDER_PROP_NAME, TransportConstants.DEFAULT_KEYSTORE_PROVIDER, configuration)
+        private val keyStorePassword = ConfigurationHelper.getPasswordProperty(TransportConstants.KEYSTORE_PASSWORD_PROP_NAME, TransportConstants.DEFAULT_KEYSTORE_PASSWORD, configuration, ActiveMQDefaultConfiguration.getPropMaskPassword(), ActiveMQDefaultConfiguration.getPropPasswordCodec())
     }
 
 
-    private class NodeAcceptorSslHandler(engine: SSLEngine, private val trace: Boolean) : SslHandler(engine) {
+    private class NodeAcceptorSslHandler(engine: SSLEngine,
+                                         delegatedTaskExecutor: Executor,
+                                         private val trace: Boolean) : SslHandler(engine, delegatedTaskExecutor) {
         companion object {
             private val logger = contextLogger()
         }

node/src/main/kotlin/net/corda/node/services/rpc/RpcBrokerConfiguration.kt

@@ -30,7 +30,7 @@ internal class RpcBrokerConfiguration(baseDirectory: Path, maxMessageSize: Int,
         setDirectories(baseDirectory)
 
         val acceptorConfigurationsSet = mutableSetOf(
-                rpcAcceptorTcpTransport(address, sslOptions, useSsl)
+                rpcAcceptorTcpTransport(address, sslOptions, enableSSL = useSsl)
         )
         adminAddress?.let {
             acceptorConfigurationsSet += rpcInternalAcceptorTcpTransport(it, nodeConfiguration)

testing/core-test-utils/src/main/kotlin/net/corda/testing/core/TestUtils.kt

@@ -1,30 +1,50 @@
-@file:Suppress("UNUSED_PARAMETER")
 @file:JvmName("TestUtils")
+@file:Suppress("TooGenericExceptionCaught", "MagicNumber", "ComplexMethod", "LongParameterList")
 
 package net.corda.testing.core
 
 import net.corda.core.contracts.PartyAndReference
 import net.corda.core.contracts.StateRef
-import net.corda.core.crypto.*
+import net.corda.core.crypto.Crypto
+import net.corda.core.crypto.SecureHash
+import net.corda.core.crypto.SignatureScheme
+import net.corda.core.crypto.toStringShort
 import net.corda.core.identity.CordaX500Name
 import net.corda.core.identity.Party
 import net.corda.core.identity.PartyAndCertificate
+import net.corda.core.internal.toX500Name
 import net.corda.core.internal.unspecifiedCountry
 import net.corda.core.node.NodeInfo
 import net.corda.core.utilities.NetworkHostAndPort
 import net.corda.core.utilities.millis
+import net.corda.core.utilities.minutes
+import net.corda.coretesting.internal.DEV_INTERMEDIATE_CA
+import net.corda.coretesting.internal.DEV_ROOT_CA
 import net.corda.nodeapi.internal.createDevNodeCa
 import net.corda.nodeapi.internal.crypto.CertificateAndKeyPair
 import net.corda.nodeapi.internal.crypto.CertificateType
 import net.corda.nodeapi.internal.crypto.X509Utilities
-import net.corda.coretesting.internal.DEV_INTERMEDIATE_CA
-import net.corda.coretesting.internal.DEV_ROOT_CA
+import net.corda.nodeapi.internal.crypto.X509Utilities.toGeneralNames
+import org.bouncycastle.asn1.x509.CRLReason
+import org.bouncycastle.asn1.x509.DistributionPointName
+import org.bouncycastle.asn1.x509.Extension
+import org.bouncycastle.asn1.x509.ExtensionsGenerator
+import org.bouncycastle.asn1.x509.GeneralName
+import org.bouncycastle.asn1.x509.GeneralNames
+import org.bouncycastle.asn1.x509.IssuingDistributionPoint
+import org.bouncycastle.cert.jcajce.JcaX509CRLConverter
+import org.bouncycastle.cert.jcajce.JcaX509ExtensionUtils
+import org.bouncycastle.cert.jcajce.JcaX509v2CRLBuilder
+import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder
 import java.math.BigInteger
+import java.net.URI
 import java.security.KeyPair
 import java.security.PublicKey
+import java.security.cert.X509CRL
 import java.security.cert.X509Certificate
 import java.time.Duration
 import java.time.Instant
+import java.util.*
 import java.util.concurrent.atomic.AtomicInteger
 import kotlin.test.fail
 
@@ -109,6 +129,44 @@ fun getTestPartyAndCertificate(name: CordaX500Name, publicKey: PublicKey): Party
     return getTestPartyAndCertificate(Party(name, publicKey))
 }
 
+fun createCRL(issuer: CertificateAndKeyPair,
+              revokedCerts: List<X509Certificate>,
+              issuingDistPoint: URI? = null,
+              thisUpdate: Instant = Instant.now(),
+              nextUpdate: Instant = thisUpdate + 5.minutes,
+              indirect: Boolean = false,
+              revocationDate: Instant = thisUpdate,
+              crlReason: Int = CRLReason.keyCompromise,
+              signatureAlgorithm: String = "SHA256withECDSA"): X509CRL {
+    val builder = JcaX509v2CRLBuilder(issuer.certificate.subjectX500Principal, Date.from(thisUpdate))
+    val extensionUtils = JcaX509ExtensionUtils()
+    builder.addExtension(Extension.authorityKeyIdentifier, false, extensionUtils.createAuthorityKeyIdentifier(issuer.certificate))
+    // This is required and needs to match the certificate settings with respect to being indirect
+    builder.addExtension(
+            Extension.issuingDistributionPoint,
+            true,
+            IssuingDistributionPoint(
+                    issuingDistPoint?.let { DistributionPointName(toGeneralNames(it.toString(), GeneralName.uniformResourceIdentifier)) },
+                    indirect,
+                    false
+            )
+    )
+    builder.setNextUpdate(Date.from(nextUpdate))
+    for (revokedCert in revokedCerts) {
+        val extensionsGenerator = ExtensionsGenerator()
+        extensionsGenerator.addExtension(Extension.reasonCode, false, CRLReason.lookup(crlReason))
+        // Certificate issuer is required for indirect CRL
+        extensionsGenerator.addExtension(
+                Extension.certificateIssuer,
+                true,
+                GeneralNames(GeneralName(revokedCert.issuerX500Principal.toX500Name()))
+        )
+        builder.addCRLEntry(revokedCert.serialNumber, Date.from(revocationDate), extensionsGenerator.generate())
+    }
+    val bcProvider = Crypto.findProvider("BC")
+    val signer = JcaContentSignerBuilder(signatureAlgorithm).setProvider(bcProvider).build(issuer.keyPair.private)
+    return JcaX509CRLConverter().setProvider(bcProvider).getCRL(builder.build(signer))
+}
 
 private val count = AtomicInteger(0)
 /**
@@ -188,7 +246,6 @@ fun NodeInfo.singleIdentity(): Party = singleIdentityAndCert().party
  * The above will test our expectation that the getWaitingFlows action was executed successfully considering
  * that it may take a few hundreds of milliseconds for the flow state machine states to settle.
  */
-@Suppress("TooGenericExceptionCaught", "MagicNumber", "ComplexMethod")
 fun <T> executeTest(
         timeout: Duration,
         cleanup: (() -> Unit)? = null,

testing/node-driver/src/main/kotlin/net/corda/testing/node/internal/network/CrlServer.kt

@@ -4,30 +4,26 @@ package net.corda.testing.node.internal.network
 
 import net.corda.core.crypto.Crypto
 import net.corda.core.internal.CertRole
+import net.corda.core.internal.toX500Name
 import net.corda.core.utilities.NetworkHostAndPort
+import net.corda.core.utilities.contextLogger
 import net.corda.core.utilities.days
 import net.corda.core.utilities.minutes
-import net.corda.core.utilities.seconds
 import net.corda.coretesting.internal.DEV_INTERMEDIATE_CA
 import net.corda.coretesting.internal.DEV_ROOT_CA
 import net.corda.nodeapi.internal.crypto.CertificateAndKeyPair
 import net.corda.nodeapi.internal.crypto.ContentSignerBuilder
 import net.corda.nodeapi.internal.crypto.X509Utilities
+import net.corda.nodeapi.internal.crypto.X509Utilities.toGeneralNames
 import net.corda.nodeapi.internal.crypto.certificateType
 import net.corda.nodeapi.internal.crypto.toJca
-import org.bouncycastle.asn1.x500.X500Name
+import net.corda.testing.core.createCRL
 import org.bouncycastle.asn1.x509.CRLDistPoint
 import org.bouncycastle.asn1.x509.DistributionPoint
 import org.bouncycastle.asn1.x509.DistributionPointName
 import org.bouncycastle.asn1.x509.Extension
 import org.bouncycastle.asn1.x509.GeneralName
 import org.bouncycastle.asn1.x509.GeneralNames
-import org.bouncycastle.asn1.x509.IssuingDistributionPoint
-import org.bouncycastle.asn1.x509.ReasonFlags
-import org.bouncycastle.cert.jcajce.JcaX509CRLConverter
-import org.bouncycastle.cert.jcajce.JcaX509ExtensionUtils
-import org.bouncycastle.cert.jcajce.JcaX509v2CRLBuilder
-import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder
 import org.eclipse.jetty.server.Server
 import org.eclipse.jetty.server.ServerConnector
 import org.eclipse.jetty.server.handler.HandlerCollection
@@ -36,11 +32,12 @@ import org.eclipse.jetty.servlet.ServletHolder
 import org.glassfish.jersey.server.ResourceConfig
 import org.glassfish.jersey.servlet.ServletContainer
 import java.io.Closeable
-import java.math.BigInteger
 import java.net.InetSocketAddress
+import java.net.URI
 import java.security.KeyPair
 import java.security.cert.X509CRL
 import java.security.cert.X509Certificate
+import java.time.Duration
 import java.util.*
 import javax.security.auth.x500.X500Principal
 import javax.ws.rs.GET
@@ -51,7 +48,7 @@ import kotlin.collections.ArrayList
 
 class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
     companion object {
-        private const val SIGNATURE_ALGORITHM = "SHA256withECDSA"
+        private val logger = contextLogger()
 
         const val NODE_CRL = "node.crl"
         const val FORBIDDEN_CRL = "forbidden.crl"
@@ -72,8 +69,8 @@ class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
                     null
             )
             if (crlDistPoint != null) {
-                val distPointName = DistributionPointName(GeneralNames(GeneralName(GeneralName.uniformResourceIdentifier, crlDistPoint)))
-                val crlIssuerGeneralNames = crlIssuer?.let { GeneralNames(GeneralName(X500Name.getInstance(it.encoded))) }
+                val distPointName = DistributionPointName(toGeneralNames(crlDistPoint, GeneralName.uniformResourceIdentifier))
+                val crlIssuerGeneralNames = crlIssuer?.let { GeneralNames(GeneralName(it.toX500Name())) }
                 val distPoint = DistributionPoint(distPointName, null, crlIssuerGeneralNames)
                 builder.addExtension(Extension.cRLDistributionPoints, false, CRLDistPoint(arrayOf(distPoint)))
             }
@@ -87,14 +84,17 @@ class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
         }
     }
 
-    val revokedNodeCerts: MutableList<BigInteger> = ArrayList()
-    val revokedIntermediateCerts: MutableList<BigInteger> = ArrayList()
+    val revokedNodeCerts: MutableList<X509Certificate> = ArrayList()
+    val revokedIntermediateCerts: MutableList<X509Certificate> = ArrayList()
 
     val rootCa: CertificateAndKeyPair = DEV_ROOT_CA
 
     private lateinit var _intermediateCa: CertificateAndKeyPair
     val intermediateCa: CertificateAndKeyPair get() = _intermediateCa
 
+    @Volatile
+    var delay: Duration? = null
+
     val hostAndPort: NetworkHostAndPort
         get() = server.connectors.mapNotNull { it as? ServerConnector }
                 .map { NetworkHostAndPort(it.host, it.localPort) }
@@ -106,7 +106,7 @@ class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
                 DEV_INTERMEDIATE_CA.certificate.withCrlDistPoint(rootCa.keyPair, "http://$hostAndPort/crl/$INTERMEDIATE_CRL"),
                 DEV_INTERMEDIATE_CA.keyPair
         )
-        println("Network management web services started on $hostAndPort")
+        logger.info("Network management web services started on $hostAndPort")
     }
 
     fun replaceNodeCertDistPoint(nodeCaCert: X509Certificate,
@@ -115,29 +115,20 @@ class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
         return nodeCaCert.withCrlDistPoint(intermediateCa.keyPair, nodeCaCrlDistPoint, crlIssuer)
     }
 
-    fun createRevocationList(signatureAlgorithm: String,
-                             ca: CertificateAndKeyPair,
-                             endpoint: String,
-                             indirect: Boolean,
-                             serialNumbers: List<BigInteger>): X509CRL {
-        println("Generating CRL for $endpoint")
-        val builder = JcaX509v2CRLBuilder(ca.certificate.subjectX500Principal, Date(System.currentTimeMillis() - 1.minutes.toMillis()))
-        val extensionUtils = JcaX509ExtensionUtils()
-        builder.addExtension(Extension.authorityKeyIdentifier, false, extensionUtils.createAuthorityKeyIdentifier(ca.certificate))
-        val issuingDistPointName = GeneralName(GeneralName.uniformResourceIdentifier, "http://$hostAndPort/crl/$endpoint")
-        // This is required and needs to match the certificate settings with respect to being indirect
-        val issuingDistPoint = IssuingDistributionPoint(DistributionPointName(GeneralNames(issuingDistPointName)), indirect, false)
-        builder.addExtension(Extension.issuingDistributionPoint, true, issuingDistPoint)
-        builder.setNextUpdate(Date(System.currentTimeMillis() + 1.seconds.toMillis()))
-        serialNumbers.forEach {
-            builder.addCRLEntry(it, Date(System.currentTimeMillis() - 10.minutes.toMillis()), ReasonFlags.certificateHold)
-        }
-        val signer = JcaContentSignerBuilder(signatureAlgorithm).setProvider(Crypto.findProvider("BC")).build(ca.keyPair.private)
-        return JcaX509CRLConverter().setProvider(Crypto.findProvider("BC")).getCRL(builder.build(signer))
+    private fun createServerCRL(issuer: CertificateAndKeyPair,
+                                endpoint: String,
+                                indirect: Boolean,
+                                revokedCerts: List<X509Certificate>): X509CRL {
+        logger.info("Generating CRL for /$endpoint: ${revokedCerts.map { it.serialNumber }}")
+        return createCRL(
+                issuer,
+                revokedCerts,
+                issuingDistPoint = URI("http://$hostAndPort/crl/$endpoint"),
+                indirect = indirect
+        )
     }
 
     override fun close() {
-        println("Shutting down network management web services...")
         server.stop()
         server.join()
     }
@@ -159,8 +150,8 @@ class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
         @Path(NODE_CRL)
         @Produces("application/pkcs7-crl")
         fun getNodeCRL(): Response {
-            return Response.ok(crlServer.createRevocationList(
-                    SIGNATURE_ALGORITHM,
+            crlServer.delay?.toMillis()?.let(Thread::sleep)
+            return Response.ok(crlServer.createServerCRL(
                     crlServer.intermediateCa,
                     NODE_CRL,
                     false,
@@ -179,8 +170,8 @@ class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
         @Path(INTERMEDIATE_CRL)
         @Produces("application/pkcs7-crl")
         fun getIntermediateCRL(): Response {
-            return Response.ok(crlServer.createRevocationList(
-                    SIGNATURE_ALGORITHM,
+            crlServer.delay?.toMillis()?.let(Thread::sleep)
+            return Response.ok(crlServer.createServerCRL(
                     crlServer.rootCa,
                     INTERMEDIATE_CRL,
                     false,
@@ -192,11 +183,11 @@ class CrlServer(hostAndPort: NetworkHostAndPort) : Closeable {
         @Path(EMPTY_CRL)
         @Produces("application/pkcs7-crl")
         fun getEmptyCRL(): Response {
-            return Response.ok(crlServer.createRevocationList(
-                    SIGNATURE_ALGORITHM,
+            return Response.ok(crlServer.createServerCRL(
                     crlServer.rootCa,
                     EMPTY_CRL,
-                    true, emptyList()
+                    true,
+                    emptyList()
             ).encoded).build()
         }
     }

testing/test-utils/src/main/kotlin/net/corda/testing/internal/InternalTestUtils.kt

@@ -42,6 +42,7 @@ import net.corda.nodeapi.internal.crypto.X509Utilities
 import net.corda.nodeapi.internal.persistence.CordaPersistence
 import net.corda.nodeapi.internal.persistence.DatabaseConfig
 import net.corda.nodeapi.internal.persistence.SchemaMigration
+import net.corda.nodeapi.internal.protonwrapper.netty.CrlSource
 import net.corda.nodeapi.internal.registerDevP2pCertificates
 import net.corda.serialization.internal.amqp.AMQP_ENABLED
 import net.corda.testing.core.ALICE_NAME
@@ -52,6 +53,8 @@ import java.io.IOException
 import java.net.ServerSocket
 import java.nio.file.Path
 import java.security.KeyPair
+import java.security.cert.X509CRL
+import java.security.cert.X509Certificate
 import java.util.*
 import java.util.jar.JarOutputStream
 import java.util.jar.Manifest
@@ -147,6 +150,12 @@ fun p2pSslOptions(path: Path, name: CordaX500Name = CordaX500Name("MegaCorp", "L
     return sslConfig
 }
 
+fun fixedCrlSource(crls: Set<X509CRL>): CrlSource {
+    return object : CrlSource {
+        override fun fetch(certificate: X509Certificate): Set<X509CRL> = crls
+    }
+}
+
 /** This is the same as the deprecated [WireTransaction] c'tor but avoids the deprecation warning. */
 @SuppressWarnings("LongParameterList")
 fun createWireTransaction(inputs: List<StateRef>,