1. Introduction
Secure Sockets Layer (SSL) is a standard security protocol for establishing encrypted links between a web server and a browser in an online communication. SSL was originally developed for securing web browser and server communications by Netscape in 1994. Subsequently, the protocol was adopted by the Internet Engineering Task Force (IETF) and renamed to Transport Layer Security (TLS) under RFC 2246 in 1999. SSL/TLS addresses the following security considerations:
- Authentication: During SSL Handshake process, the server and client make sure the computer speaking to is trusted
- Confidentiality: The data that is passed between the client and server is encrypted
- Integrity: The data that is passed between the client and server cannot be modified
Java Security Socket Extension (JSSE) is the Java implementation of SSL/TLS protocols. It includes functionality for data encryption, sever authentication, message integrity, and optional client-authentication.
Apache ActiveMQ (AMQ) is written in Java and implements JMS 1.1 specification from the Apache Software Foundation. ActiveMQ uses JSSE to support SSL.
Assuming you understand both AMQ and SSL. In this example, I will demonstrate how to configure an AMQ broker to support SSL and how to create a simple Java application which connects to it securely.
2. Technologies Used
The example code in this article was built and run using:
- Java 1.8.101 (1.8.x will do fine)
- Maven 3.3.9 (3.3.x will do fine)
- Apache ActiveMQ 5.15.3 (others will do fine)
- Eclipse Mars (Any Java IDE would work)
3. Configure ActiveMQ Server
In this step, we will configure an AMQ server to support the SSL transport in three steps:
- Install an AMQ server.
- Alter the configuration file to support SSL.
- Start the AMQ server and verify the SSL connector is started.
3.1 Activemq.xml
Install AMQ 5.15.3 at a Windows PC. Please check out my other article for more details. If you want to generate a new security key, please follow this article to do so.
In this step, we will use the security certificate that came with the installation and update activemq.xml to enable the SSL transport connector.
activemq.xml
001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094 095 096 097 098 099 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | <!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.--><!-- START SNIPPET: example --><beans xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd <!-- Allows us to use system properties as variables in this configuration file --> <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <value>file:${activemq.conf}/credentials.properties</value> </property> </bean> <!-- Allows accessing the server log --> <bean id="logQuery" class="io.fabric8.insight.log.log4j.Log4jLogQuery" lazy-init="false" scope="singleton" init-method="start" destroy-method="stop"> </bean> <!-- The <broker> element is used to configure the ActiveMQ broker. --> <broker xmlns="http://activemq.apache.org/schema/core" brokerName="localhost" dataDirectory="${activemq.data}"> <destinationPolicy> <policyMap> <policyEntries> <policyEntry topic=">" > <!-- The constantPendingMessageLimitStrategy is used to prevent slow topic consumers to block producers and affect other consumers by limiting the number of messages that are retained For more information, see: --> <pendingMessageLimitStrategy> <constantPendingMessageLimitStrategy limit="1000"/> </pendingMessageLimitStrategy> </policyEntry> </policyEntries> </policyMap> </destinationPolicy> <!-- The managementContext is used to configure how ActiveMQ is exposed in JMX. By default, ActiveMQ uses the MBean server that is started by the JVM. For more information, see: --> <managementContext> <managementContext createConnector="false"/> </managementContext> <sslContext> <sslContext keyStore="file:${activemq.base}/conf/broker.ks" keyStorePassword="password" trustStore="file:${activemq.base}/conf/broker.ts" trustStorePassword="password"/> </sslContext> <!-- Configure message persistence for the broker. The default persistence mechanism is the KahaDB store (identified by the kahaDB tag). For more information, see: --> <persistenceAdapter> <kahaDB directory="${activemq.data}/kahadb"/> </persistenceAdapter> <!-- The systemUsage controls the maximum amount of space the broker will use before disabling caching and/or slowing down producers. For more information, see: --> <systemUsage> <systemUsage> <memoryUsage> <memoryUsage percentOfJvmHeap="70" /> </memoryUsage> <storeUsage> <storeUsage limit="100 gb"/> </storeUsage> <tempUsage> <tempUsage limit="50 gb"/> </tempUsage> </systemUsage> </systemUsage> <!-- The transport connectors expose ActiveMQ over a given protocol to clients and other brokers. For more information, see: --> <transportConnectors> <!-- DOS protection, limit concurrent connections to 1000 and frame size to 100MB <transportConnector name="amqp" uri="amqp://0.0.0.0:5672?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/> <transportConnector name="stomp" uri="stomp://0.0.0.0:61613?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/> <transportConnector name="mqtt" uri="mqtt://0.0.0.0:1883?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/> <transportConnector name="ws" uri="ws://0.0.0.0:61614?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/> --> <transportConnector name="openwire" uri="tcp://0.0.0.0:61616?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/> <transportConnector name="ssl" uri="ssl://0.0.0.0:61714?transport.enabledProtocols=TLSv1.2"/> </transportConnectors> <!-- destroy the spring context on shutdown to stop jetty --> <shutdownHooks> <bean xmlns="http://www.springframework.org/schema/beans" class="org.apache.activemq.hooks.SpringContextHook" /> </shutdownHooks> </broker> <!-- Enable web consoles, REST and Ajax APIs and demos The web consoles requires by default login, you can disable this in the jetty.xml file Take a look at ${ACTIVEMQ_HOME}/conf/jetty.xml for more details --> <import resource="jetty.xml"/></beans><!-- END SNIPPET: example --> |
- line 73-77: Specify the AMQ server
keystoreproperties - line 126-127: Enable the SSL transport with TLS protocol
3.2 Server log
Start the AMQ server.
server.log
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | wrapper | --> Wrapper Started as Consolewrapper | Launching a JVM...jvm 1 | Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.orgjvm 1 | Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.jvm 1 |jvm 1 | Java Runtime: Oracle Corporation 1.8.0_40 C:\Program Files\Java\jre1.8.0_40jvm 1 | Heap sizes: current=251392k free=235655k max=932352kjvm 1 | JVM args: -Dactivemq.home=../.. -Dactivemq.base=../.. -Djavax.net.ssl.keyStorePassword=password -javax.net.ssl.trustStorePassword=password -Djavax.net.ssl.keyStore=../../conf/broker.ks -Djavax.net.ssl.trustStore=../../conf/broker.ts -Dcom.sun.management.jmxremote -Dorg.apache.activemq.UseDedicatedTaskRunner=true -Djava.util.logging.config.file=logging.properties -Dactivemq.conf=../../conf -Dactivemq.data=../../data -Djava.security.auth.login.config=../../conf/login.config -Xmx1024m -Djava.library.path=../../bin/win64 -Dwrapper.key=V4xc5qXB92bkkPap -Dwrapper.port=32000 -Dwrapper.jvm.port.min=31000 -Dwrapper.jvm.port.max=31999 -Dwrapper.pid=19168 -Dwrapper.version=3.2.3 -Dwrapper.native_library=wrapper -Dwrapper.cpu.timeout=10 -Dwrapper.jvmid=1jvm 1 | Extensions classpath:jvm 1 | [..\..\lib,..\..\lib\camel,..\..\lib\optional,..\..\lib\web,..\..\lib\extra]jvm 1 | ACTIVEMQ_HOME: ..\..jvm 1 | ACTIVEMQ_BASE: ..\..jvm 1 | ACTIVEMQ_CONF: ..\..\confjvm 1 | ACTIVEMQ_DATA: ..\..\datajvm 1 | Loading message broker from: xbean:activemq.xmljvm 1 | INFO | Refreshing org.apache.activemq.xbean.XBeanBrokerFactory$1@244a02d0: startup date [Mon May 14 19:42:09 CDT 2018]; root of context hierarchyjvm 1 | INFO | Using Persistence Adapter: KahaDBPersistenceAdapter[C:\MaryZheng\tools\apache-activemq-5.15.3\bin\win64\..\..\data\kahadb]jvm 1 | INFO | KahaDB is version 6jvm 1 | INFO | PListStore:[C:\MaryZheng\tools\apache-activemq-5.15.3\bin\win64\..\..\data\localhost\tmp_storage] startedjvm 1 | INFO | Apache ActiveMQ 5.15.3 (localhost, ID:SL2LS431841-55107-1526344932236-0:1) is startingjvm 1 | INFO | Listening for connections at: tcp://SL2LS431841:61616?maximumConnections=1000&wireFormat.maxFrameSize=104857600jvm 1 | INFO | Connector openwire startedjvm 1 | INFO | Listening for connections at: ssl://SL2LS431841:61714?transport.enabledProtocols=TLSv1.2jvm 1 | INFO | Connector ssl startedjvm 1 | INFO | Apache ActiveMQ 5.15.3 (localhost, ID:SL2LS431841-55107-1526344932236-0:1) startedjvm 1 | INFO | For help or more information please see: http://activemq.apache.orgjvm 1 | WARN | Store limit is 102400 mb (current store usage is 3 mb). The data directory: C:\MaryZheng\tools\apache-activemq-5.15.3\bin\win64\..\..\data\kahadb only has 58614 mb of usable space. - resetting to maximum available disk space: 58614 mbjvm 1 | INFO | No Spring WebApplicationInitializer types detected on classpathjvm 1 | INFO | ActiveMQ WebConsole available at http://0.0.0.0:8161/jvm 1 | INFO | ActiveMQ Jolokia REST API available at http://0.0.0.0:8161/api/jolokia/jvm 1 | INFO | Initializing Spring FrameworkServlet 'dispatcher'jvm 1 | INFO | No Spring WebApplicationInitializer types detected on classpathjvm 1 | INFO | jolokia-agent: Using policy access restrictor classpath:/jolokia-access.xml |
Note:
- line 8: Pay attention to the JVM options for the security properties
- line 21: AMQ server starts the
tcpconnector at port 61616 - line 23-24: AMQ server starts the
sslconnector at port 61714
3.3 AMQ Management Console
We can verify the AMQ server’s ssl connector via the AMQ management web console. Go to http://localhost:8161/admin/connections.jsp and confirm the ssl connector.
4. Connect to ActiveMQ Server
In this step, we will build two Java applications:
QueueMessageConsumer– connects to an AMQ server at an open wire port and consumes the messagesQueueMessageProducer– connects to an AMQ server at a secured port and publishes the messages
4.1 Publish Messages via a Secured Port
Imagine a customer sends sensitive data to your AMQ server, we need to secure the data by enabling the SSL connection. In this step, we will build a QueueMessageProducer class to publish the messages into a queue via a secured connection.
QueueMessageProducer.java
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | package jcg.demo.activemq.ssl;import javax.jms.Connection;import javax.jms.JMSException;import javax.jms.MessageProducer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQSslConnectionFactory;/** * A simple message producer which sends the message to ActiveMQ Broker * * @author Mary.Zheng * */public class QueueMessageProducer { private String activeMqBrokerUri; private String username; private String password; public static void main(String[] args) { QueueMessageProducer queProducer = new QueueMessageProducer("ssl://localhost:61714", "admin", "admin"); queProducer.sendDummyMessages("test.queue"); } public QueueMessageProducer(String activeMqBrokerUri, String username, String password) { super(); this.activeMqBrokerUri = activeMqBrokerUri; this.username = username; this.password = password; } public void sendDummyMessages(String queueName) { System.out.println("QueueMessageProducer started " + this.activeMqBrokerUri); ActiveMQSslConnectionFactory connFactory = null; Connection connection = null; Session session = null; MessageProducer msgProducer = null; try { connFactory = new ActiveMQSslConnectionFactory(activeMqBrokerUri); connFactory.setUserName(username); connFactory.setPassword(password); connection = connFactory.createConnection(); connection.start(); session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); msgProducer = session.createProducer(session.createQueue(queueName)); for (int i = 0; i < 10; i++) { TextMessage textMessage = session.createTextMessage(buildDummyMessage(i)); msgProducer.send(textMessage); try { Thread.sleep(10000); } catch (InterruptedException e) { } } System.out.println("QueueMessageProducer completed"); } catch (JMSException e) { e.printStackTrace(); System.out.println("Caught exception: " + e.getMessage()); } catch (Exception e1) { System.out.println("Caught exception: " + e1.getMessage()); } try { if (msgProducer != null) { msgProducer.close(); } if (session != null) { session.close(); } if (connection != null) { connection.close(); } } catch (Throwable ignore) { } } private String buildDummyMessage(int value) { return "dummy message " + value; }} |
- line 24: Pay attention to the
sslconnection
4.2 Consume Messages via a Non-Secured Port
Once the data is in the AMQ server, internal processes, which are protected by the IT firewall, can consume these messages via a non-secured connector for better performance. In this step, we will build a QueueMessageConsumer class to consume the messages from a queue via a non-secured connection.
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QueueMessageConsumer.java
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | package jcg.demo.activemq.ssl;import javax.jms.Connection;import javax.jms.Destination;import javax.jms.JMSException;import javax.jms.Message;import javax.jms.MessageConsumer;import javax.jms.MessageListener;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnectionFactory;/** * A simple message consumer which consumes the message from ActiveMQ Broker * * @author Mary.Zheng * */public class QueueMessageConsumer implements MessageListener { private String activeMqBrokerUri; private String username; private String password; private String destinationName; public static void main(String[] args) { QueueMessageConsumer queueMsgListener = new QueueMessageConsumer("tcp://localhost:61616", "admin", "admin"); queueMsgListener.setDestinationName("test.queue"); try { queueMsgListener.run(); } catch (JMSException e) { e.printStackTrace(); } } public QueueMessageConsumer(String activeMqBrokerUri, String username, String password) { super(); this.activeMqBrokerUri = activeMqBrokerUri; this.username = username; this.password = password; } public void run() throws JMSException { ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(username, password, activeMqBrokerUri); Connection connection = factory.createConnection(); connection.setClientID("MaryClient"); connection.start(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); Destination destination = session.createQueue(destinationName); MessageConsumer consumer = session.createConsumer(destination); consumer.setMessageListener(this); System.out.println(String.format("QueueMessageConsumer Waiting for messages at %s %s", destinationName, this.activeMqBrokerUri)); } @Override public void onMessage(Message message) { String msg; try { msg = String.format("QueueMessageConsumer Received message [ %s ]", ((TextMessage) message).getText()); Thread.sleep(10000);// sleep for 10 seconds System.out.println(msg); } catch (JMSException | InterruptedException e) { e.printStackTrace(); } } public String getDestinationName() { return destinationName; } public void setDestinationName(String destinationName) { this.destinationName = destinationName; }} |
- line 29: Pay attention to the open wire connection
4.3 Install Security Certificate
The client needs to install the security certificate to establish the secured connection. There are several ways to get the security certificate installed for a Java program. As a Java developer, I use the InstallCert class to do so. The source code is credited to Andreas Sterbenz.
InstallCert.java
001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094 095 096 097 098 099 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | /* * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Sun Microsystems nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *//** * Originally from: * Use: * java InstallCert hostname * Example: *% java InstallCert ecc.fedora.redhat.com */package jcg.demo.activemq.ssl.util;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.security.KeyStore;import java.security.MessageDigest;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import javax.net.ssl.SSLContext;import javax.net.ssl.SSLException;import javax.net.ssl.SSLSocket;import javax.net.ssl.SSLSocketFactory;import javax.net.ssl.TrustManager;import javax.net.ssl.TrustManagerFactory;import javax.net.ssl.X509TrustManager;public class InstallCert { public static void main(final String[] args) { InstallCert installCert = new InstallCert(); try { installCert.generateCert("localhost", 61714); } catch (Exception e) { e.printStackTrace(); } } public void generateCert(String host, int port) throws Exception { File file = getJsSecCertsFile(); System.out.println("Loading KeyStore " + file + "..."); final InputStream in = new FileInputStream(file); final KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType()); ks.load(in, passphrase); in.close(); final SSLContext context = SSLContext.getInstance("TLS"); final TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm()); tmf.init(ks); final X509TrustManager defaultTrustManager = (X509TrustManager) tmf.getTrustManagers()[0]; final SavingTrustManager tm = new SavingTrustManager(defaultTrustManager); context.init(null, new TrustManager[] { tm }, null); final SSLSocketFactory factory = context.getSocketFactory(); System.out.println("Opening connection to " + host + ":" + port + "..."); final SSLSocket socket = (SSLSocket) factory.createSocket(host, port); socket.setSoTimeout(10000); try { System.out.println("Starting SSL handshake..."); socket.startHandshake(); socket.close(); System.out.println(); System.out.println("No errors, certificate is already trusted"); } catch (final SSLException e) { System.out.println(); e.printStackTrace(System.out); } final X509Certificate[] chain = tm.chain; if (chain == null) { System.out.println("Could not obtain server certificate chain"); return; } final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); System.out.println(); System.out.println("Server sent " + chain.length + " certificate(s):"); System.out.println(); final MessageDigest sha1 = MessageDigest.getInstance("SHA1"); final MessageDigest md5 = MessageDigest.getInstance("MD5"); for (int i = 0; i > 4]); sb.append(HEXDIGITS[b & 15]); sb.append(' '); } return sb.toString(); } private static class SavingTrustManager implements X509TrustManager { private final X509TrustManager tm; private X509Certificate[] chain; SavingTrustManager(final X509TrustManager tm) { this.tm = tm; } @Override public X509Certificate[] getAcceptedIssuers() { return new X509Certificate[0]; } @Override public void checkClientTrusted(final X509Certificate[] chain, final String authType) throws CertificateException { throw new UnsupportedOperationException(); } @Override public void checkServerTrusted(final X509Certificate[] chain, final String authType) throws CertificateException { this.chain = chain; this.tm.checkServerTrusted(chain, authType); } }} |
- line 68: AMQ starts the SSL connector at port 61714. Client installs its certificate.
5. Demo
First, execute the InstallCert to install the certificate into Java keystore. You can try running the program twice to confirm that the certificate is installed correctly.
InstallCert output
01 02 03 04 05 06 07 08 09 10 11 12 13 14 | Loading KeyStore C:\MaryZheng\tools\java\jdk1.8.0_31\jre\lib\security\cacerts...Opening connection to localhost:61714...Starting SSL handshake...No errors, certificate is already trustedServer sent 1 certificate(s): 1 Subject CN=localhost, OU=broker, O=Unknown, L=Unknown, ST=Unknown, C=Unknown Issuer CN=localhost, OU=broker, O=Unknown, L=Unknown, ST=Unknown, C=Unknown sha1 f0 79 0d 04 38 5a 46 ce 86 e1 8a 20 1f 7b ab 3a 46 e4 34 5c md5 3f 6c 0c 89 a8 80 29 cc f5 2d da 5c d7 3f ab 37 Enter certificate to add to trusted keystore or 'q' to quit: [1] |
5.1 Execute both Applications
Start QueueMessageProducer as a Java application and capture the output:
QueueMessageProducer output
1 2 | QueueMessageProducer started ssl://localhost:61714QueueMessageProducer completed |
Start QueueMessageConsumer as a Java application and capture the output:
QueueMessageConsumeroutput
01 02 03 04 05 06 07 08 09 10 11 | QueueMessageConsumer Waiting for messages at test.queue tcp://localhost:61616QueueMessageConsumer Received message [ dummy message 0 ]QueueMessageConsumer Received message [ dummy message 1 ]QueueMessageConsumer Received message [ dummy message 2 ]QueueMessageConsumer Received message [ dummy message 3 ]QueueMessageConsumer Received message [ dummy message 4 ]QueueMessageConsumer Received message [ dummy message 5 ]QueueMessageConsumer Received message [ dummy message 6 ]QueueMessageConsumer Received message [ dummy message 7 ]QueueMessageConsumer Received message [ dummy message 8 ]QueueMessageConsumer Received message [ dummy message 9 ] |
Note: The QueueMessageProducer starts with an ssl connector.
Verify the ssl connector is enabled via the management web console.
6. Summary
In this tutorial, we outlined the steps to configure an AMQ server to enable the SSL/TLS transport. SSL must be enabled for Payment Card Industry (PCI) applications. Please check out this article for pro and cons about SSL for other type of applications.
7. Download the Source Code
This example builds two java applications to send and receive messages via the AMQ broker. One via secured SSL, the other not.
Download
You can download the full source code of this example here: Apache ActiveMQ SSL Example
You can download the full source code of this example here: Apache ActiveMQ SSL Example
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Thank you very much for the detailed article! When I ran the SSL code, it gave some error messages (InstallCert gives “PKIX path building failed”, QueueMessageProducer gives “could not connect to broker URL: ssl:….” and “PKIX path building failed”. I would like to get some advice as to what caused them. Thank you in advance for your time!