I'm trying to consume an IBM MQ (version 8.0.0.8) with SSL using a Java client built basically with:
- Oracle JKD 8 and IBM JRE 7 (for testing purposes I have one client for each of them)
- com.ibm.mq.allclient-9.1.0.0.jar
- javax.jms-api-2.0.1.jarspring-jms-4.3.7.RELEASE.jar
- spring-jms-4.3.7.RELEASE.jar
The MQ is a Request/Reply type.
I have the correct certificate and all MQ properties set, but for some reason the connection “drops” and I get no errors on my client side and my requests never get any response and keeps running “forever”, never getting any response. The only clue that I have is an error message in the MQ log that says:
Process(31600.16) User(QMQM) Jobname(JOB_NAME) Host(HOST_NAME) VRMF(8.0.0.8) QMgr(MANAGER_NAME) AMQ9638: SSL communications error for channel 'CHANNEL_NAME'. EXPLANATION: Cause . . . . . : An unexpected SSL communications error occurred for a channel, as reported in the preceding messages. The channel is 'CHANNEL_NAME';
The strange thing is that the SSL Handshake happens, my certificate is accepted by the MQ, but for some reason something happens after this. I’m trying using both Oracle JRE 8 and IBM JRE 7. Maybe is something on MQ side (IBM MQ v8.0.0.8) or some configuration that I’m missing on my side.
I have already installed the JCE Unlimited Policies, so the problem is not CipherSpec X CipherSuite.
I'm using -Djavax.net.debug=all and I can see that my certificate is being used correctly and I can't see any problems there...
My contact point on the MQ Team told me that for some reason my application is revoking the certificate (something related with CLR), but I have no idea why this would happen.
My Java code:
public Message callMQ() {
Message message = null;
try {
MQConnectionFactory factory = mqQueueConnectionFactory();
JMSContext context = factory.createContext();
Destination requestQueue = context.createQueue("queue:///REQUEST_QUEUE");
Destination replyQueue = context.createQueue("queue:///REPLY_QUEUE");
JmsTemplate jmsTemplate = new JmsTemplate(factory);
FIXMLRootInbound inbound = new FIXMLRootInbound();
String xml = XmlUtil.xmlObjectToString(inbound);
message = jmsTemplate.sendAndReceive(requestQueue,
session -> {
Message req = session.createTextMessage(xml);
req.setJMSCorrelationID(UUID.randomUUID().toString());
req.setJMSDestination(requestQueue);
req.setJMSReplyTo(replyQueue);
return req;
});
} catch (Throwable e) {
e.printStackTrace();
}
return message;
}
private MQConnectionFactory mqQueueConnectionFactory() throws NoSuchAlgorithmException, KeyStoreException,
IOException, CertificateException, UnrecoverableKeyException, KeyManagementException, JmsException {
SSLSocketFactory sslSocketFactory = sslContext().getSocketFactory();
MQEnvironment.sslSocketFactory = sslSocketFactory;
MQEnvironment.sslCipherSuite = "TLS_RSA_WITH_AES_256_CBC_SHA";
MQEnvironment.sslFipsRequired = false;
MQConnectionFactory mqQueueConnectionFactory = new MQQueueConnectionFactory();
mqQueueConnectionFactory.setHostName(host);
try {
mqQueueConnectionFactory.setTransportType(JMSC.MQJMS_TP_CLIENT_MQ_TCPIP);
mqQueueConnectionFactory.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE,
WMQConstants.WMQ_CM_CLIENT);
mqQueueConnectionFactory.setQueueManager(queueManager);
mqQueueConnectionFactory.setSSLCipherSuite("TLS_RSA_WITH_AES_256_CBC_SHA");
mqQueueConnectionFactory.setCCSID(285);
mqQueueConnectionFactory.setChannel(channel);
mqQueueConnectionFactory.setPort(port);
mqQueueConnectionFactory.setSSLSocketFactory(sslSocketFactory);
mqQueueConnectionFactory.setSSLFipsRequired(false);
} catch (Exception e) {
log.error("Error creating MQQueueConnectionFactory.", e);
}
return mqQueueConnectionFactory;
}
private SSLContext sslContext() throws KeyStoreException, IOException, CertificateException, NoSuchAlgorithmException, UnrecoverableKeyException, KeyManagementException {
try (InputStream cert = new FileInputStream("C:\myplace\Dev\Certificates\MY_KEYSTORE.jks")) {
final KeyStore caCertsKeyStore = KeyStore.getInstance("JKS");
caCertsKeyStore.load(cert, "changeit".toCharArray());
final KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
final TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
CertPathBuilder cpb = CertPathBuilder.getInstance("PKIX");
PKIXRevocationChecker rc = (PKIXRevocationChecker)cpb.getRevocationChecker();
rc.setOptions(EnumSet.of(
PKIXRevocationChecker.Option.PREFER_CRLS,
PKIXRevocationChecker.Option.ONLY_END_ENTITY,
PKIXRevocationChecker.Option.SOFT_FAIL,
PKIXRevocationChecker.Option.NO_FALLBACK));
PKIXBuilderParameters pkixParams = new PKIXBuilderParameters(caCertsKeyStore, new X509CertSelector());
pkixParams.addCertPathChecker(rc);
kmf.init(caCertsKeyStore, "changeit".toCharArray());
tmf.init( new CertPathTrustManagerParameters(pkixParams) );
final SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(kmf.getKeyManagers(), tmf.getTrustManagers(), new SecureRandom());
return sslContext;
} catch (Exception e) {
throw new RuntimeException("Exception creating SSLContext", e);
}
}
