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| Configuring Transports |
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| Detecting Dead Connections |
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| Detecting Broker Issues (Critical Analysis) |
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| Resource Manager Configuration |
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| Flow Control |
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| Guarantees of sends and commits |
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| Message Redelivery and Undelivered Messages |
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| Message Expiry |
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| Large Messages |
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| Paging |
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| Scheduled Messages |
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| Last-Value Queues |
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| Ring Queues |
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| Retroactive Addresses |
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| Exclusive Queues |
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| Message Grouping |
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| Consumer Priority |
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| Extra Acknowledge Modes |
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| Management |
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| Management Console |
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| Metrics |
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| Security |
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| Masking Passwords |
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| Broker Plugins |
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| Resource Limits |
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| The JMS Bridge |
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| </a> |
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| Client Reconnection and Session Reattachment |
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| Diverting and Splitting Message Flows |
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| Core Bridges |
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| <a href="transformers.html"> |
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| Transformers |
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| <li class="chapter " data-level="1.58" data-path="duplicate-detection.html"> |
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| <a href="duplicate-detection.html"> |
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| Duplicate Message Detection |
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| </a> |
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| <li class="chapter " data-level="1.59" data-path="clusters.html"> |
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| Clusters |
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| <li class="chapter " data-level="1.60" data-path="federation.html"> |
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| <a href="federation.html"> |
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| Federation |
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| <a href="federation-address.html"> |
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| Address Federation |
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| </a> |
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| <li class="chapter " data-level="1.60.2" data-path="federation-queue.html"> |
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| <a href="federation-queue.html"> |
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| Queue Federation |
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| </a> |
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| High Availability and Failover |
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| </a> |
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| Graceful Server Shutdown |
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| </a> |
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| <a href="libaio.html"> |
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| Libaio Native Libraries |
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| </a> |
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| <li class="chapter " data-level="1.64" data-path="thread-pooling.html"> |
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| <a href="thread-pooling.html"> |
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| Thread management |
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| <a href="web-server.html"> |
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| Embedded Web Server |
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| <a href="logging.html"> |
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| Logging |
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| <a href="rest.html"> |
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| REST Interface |
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| </a> |
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| <li class="chapter " data-level="1.68" data-path="embedding-activemq.html"> |
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| <a href="embedding-activemq.html"> |
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| Embedding the Broker |
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| </a> |
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| <li class="chapter " data-level="1.69" data-path="karaf.html"> |
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| Apache Karaf |
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| </a> |
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| Apache Tomcat |
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| Spring Integration |
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| <a href="cdi-integration.html"> |
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| CDI Integration |
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| </a> |
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| <li class="chapter " data-level="1.73" data-path="intercepting-operations.html"> |
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| <a href="intercepting-operations.html"> |
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| Intercepting Operations |
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| <a href="data-tools.html"> |
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| Data Tools |
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| <a href="maven-plugin.html"> |
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| <a href="." >Configuring Transports</a> |
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| <h1 id="configuring-the-transport">Configuring the Transport</h1> |
| <p>In this chapter we'll describe the concepts required for understanding Apache |
| ActiveMQ Artemis transports and where and how they're configured.</p> |
| <h2 id="acceptors">Acceptors</h2> |
| <p>One of the most important concepts in Apache ActiveMQ Artemis transports is the |
| <em>acceptor</em>. Let's dive straight in and take a look at an acceptor defined in |
| xml in the configuration file <code>broker.xml</code>.</p> |
| <pre><code class="lang-xml"><span class="hljs-tag"><<span class="hljs-name">acceptor</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"netty"</span>></span>tcp://localhost:61617<span class="hljs-tag"></<span class="hljs-name">acceptor</span>></span> |
| </code></pre> |
| <p>Acceptors are always defined inside an <code>acceptors</code> element. There can be one or |
| more acceptors defined in the <code>acceptors</code> element. There's no upper limit to |
| the number of acceptors per server.</p> |
| <p>Each acceptor defines a way in which connections can be made to the Apache |
| ActiveMQ Artemis server.</p> |
| <p>In the above example we're defining an acceptor that uses |
| <a href="https://netty.io/" target="_blank">Netty</a> to listen for connections at port <code>61617</code>.</p> |
| <p>The <code>acceptor</code> element contains a <code>URL</code> that defines the kind of Acceptor to |
| create along with its configuration. The <code>schema</code> part of the <code>URL</code> defines the |
| Acceptor type which can either be <code>tcp</code> or <code>vm</code> which is <code>Netty</code> or an In VM |
| Acceptor respectively. For <code>Netty</code> the host and the port of the <code>URL</code> define |
| what host and port the <code>acceptor</code> will bind to. For In VM the <code>Authority</code> part |
| of the <code>URL</code> defines a unique server id.</p> |
| <p>The <code>acceptor</code> can also be configured with a set of key=value pairs used to |
| configure the specific transport, the set of valid key=value pairs depends on |
| the specific transport be used and are passed straight through to the |
| underlying transport. These are set on the <code>URL</code> as part of the query, like so:</p> |
| <pre><code class="lang-xml"><span class="hljs-tag"><<span class="hljs-name">acceptor</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"netty"</span>></span>tcp://localhost:61617?sslEnabled=true&keyStorePath=/path<span class="hljs-tag"></<span class="hljs-name">acceptor</span>></span> |
| </code></pre> |
| <h2 id="connectors">Connectors</h2> |
| <p>Whereas acceptors are used on the server to define how we accept connections, |
| connectors are used to define how to connect to a server.</p> |
| <p>Let's look at a connector defined in our <code>broker.xml</code> file:</p> |
| <pre><code class="lang-xml"><span class="hljs-tag"><<span class="hljs-name">connector</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"netty"</span>></span>tcp://localhost:61617<span class="hljs-tag"></<span class="hljs-name">connector</span>></span> |
| </code></pre> |
| <p>Connectors can be defined inside a <code>connectors</code> element. There can be one or |
| more connectors defined in the <code>connectors</code> element. There's no upper limit to |
| the number of connectors per server.</p> |
| <p>A <code>connector</code> is used when the server acts as a client itself, e.g.:</p> |
| <ul> |
| <li>When one server is bridged to another</li> |
| <li>When a server takes part in a cluster</li> |
| </ul> |
| <p>In these cases the server needs to know how to connect to other servers. |
| That's defined by <code>connectors</code>.</p> |
| <h2 id="configuring-the-transport-directly-from-the-client">Configuring the Transport Directly from the Client</h2> |
| <p>How do we configure a core <code>ClientSessionFactory</code> with the information that it |
| needs to connect with a server?</p> |
| <p>Connectors are also used indirectly when configuring a core |
| <code>ClientSessionFactory</code> to directly talk to a server. Although in this case |
| there's no need to define such a connector in the server side configuration, |
| instead we just specify the appropriate URI.</p> |
| <p>Here's an example of creating a <code>ClientSessionFactory</code> which will connect |
| directly to the acceptor we defined earlier in this chapter, it uses the |
| standard Netty TCP transport and will try and connect on port 61617 to |
| localhost (default):</p> |
| <pre><code class="lang-java">ServerLocator locator = ActiveMQClient.createServerLocator(<span class="hljs-string">"tcp://localhost:61617"</span>); |
| |
| ClientSessionFactory sessionFactory = locator.createClientSessionFactory(); |
| |
| ClientSession session = sessionFactory.createSession(...); |
| </code></pre> |
| <p>Similarly, if you're using JMS, you can configure the JMS connection factory |
| directly on the client side:</p> |
| <pre><code class="lang-java">ConnectionFactory connectionFactory = <span class="hljs-keyword">new</span> ActiveMQConnectionFactory(<span class="hljs-string">"tcp://localhost:61617"</span>); |
| |
| Connection jmsConnection = connectionFactory.createConnection(); |
| </code></pre> |
| <h2 id="configuring-the-netty-transport">Configuring the Netty transport</h2> |
| <p>Out of the box, Apache ActiveMQ Artemis currently uses |
| <a href="https://netty.io/" target="_blank">Netty</a>, a high performance low level network library.</p> |
| <p>Our Netty transport can be configured in several different ways; to use |
| straightforward TCP sockets, SSL, or to tunnel over HTTP or HTTPS..</p> |
| <p>We believe this caters for the vast majority of transport requirements.</p> |
| <h3 id="single-port-support">Single Port Support</h3> |
| <p>Apache ActiveMQ Artemis supports using a single port for all protocols, Apache |
| ActiveMQ Artemis will automatically detect which protocol is being used CORE, |
| AMQP, STOMP, MQTT or OPENWIRE and use the appropriate Apache ActiveMQ Artemis |
| handler. It will also detect whether protocols such as HTTP or Web Sockets are |
| being used and also use the appropriate decoders. Web Sockets are supported for |
| AMQP, STOMP, and MQTT.</p> |
| <p>It is possible to limit which protocols are supported by using the <code>protocols</code> |
| parameter on the Acceptor like so:</p> |
| <pre><code class="lang-xml"><span class="hljs-tag"><<span class="hljs-name">acceptor</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"netty"</span>></span>tcp://localhost:61617?protocols=CORE,AMQP<span class="hljs-tag"></<span class="hljs-name">acceptor</span>></span> |
| </code></pre> |
| <h3 id="configuring-netty-tcp">Configuring Netty TCP</h3> |
| <p>Netty TCP is a simple unencrypted TCP sockets based transport. If you're |
| running connections across an untrusted network please bear in mind this |
| transport is unencrypted. You may want to look at the SSL or HTTPS |
| configurations.</p> |
| <p>With the Netty TCP transport all connections are initiated from the client side |
| (i.e. the server does not initiate any connections to the client). This works |
| well with firewall policies that typically only allow connections to be |
| initiated in one direction.</p> |
| <p>All the valid keys for the <code>tcp</code> URL scheme used for Netty are defined in the |
| class |
| <code>org.apache.activemq.artemis.core.remoting.impl.netty.TransportConstants</code>. |
| Most parameters can be used either with acceptors or connectors, some only work |
| with acceptors. The following parameters can be used to configure Netty for |
| simple TCP:</p> |
| <blockquote> |
| <p><strong>Note:</strong></p> |
| <p>The <code>host</code> and <code>port</code> parameters are only used in the core API, in XML |
| configuration these are set in the URI host and port.</p> |
| </blockquote> |
| <ul> |
| <li><p><code>host</code>. This specifies the host name or IP address to connect to (when |
| configuring a connector) or to listen on (when configuring an acceptor). The |
| default value for this property is <code>localhost</code>. When configuring acceptors, |
| multiple hosts or IP addresses can be specified by separating them with commas. |
| It is also possible to specify <code>0.0.0.0</code> to accept connection from all the |
| host's network interfaces. It's not valid to specify multiple addresses when |
| specifying the host for a connector; a connector makes a connection to one |
| specific address.</p> |
| <blockquote> |
| <p><strong>Note:</strong></p> |
| <p>Don't forget to specify a host name or IP address! If you want your server |
| able to accept connections from other nodes you must specify a hostname or |
| IP address at which the acceptor will bind and listen for incoming |
| connections. The default is localhost which of course is not accessible |
| from remote nodes!</p> |
| </blockquote> |
| </li> |
| <li><p><code>port</code>. This specified the port to connect to (when configuring a connector) |
| or to listen on (when configuring an acceptor). The default value for this |
| property is <code>61616</code>.</p> |
| </li> |
| <li><p><code>tcpNoDelay</code>. If this is <code>true</code> then <a href="https://en.wikipedia.org/wiki/Nagle%27s_algorithm" target="_blank">Nagle's |
| algorithm</a> will be |
| disabled. This is a <a href="https://docs.oracle.com/javase/8/docs/technotes/guides/net/socketOpt.html" target="_blank">Java (client) socket |
| option</a>. |
| The default value for this property is <code>true</code>.</p> |
| </li> |
| <li><p><code>tcpSendBufferSize</code>. This parameter determines the size of the TCP send |
| buffer in bytes. The default value for this property is <code>32768</code> bytes |
| (32KiB).</p> |
| <p>TCP buffer sizes should be tuned according to the bandwidth and latency of |
| your network. Here's a good link that explains the theory behind |
| <a href="http://www-didc.lbl.gov/TCP-tuning/" target="_blank">this</a>.</p> |
| <p>In summary TCP send/receive buffer sizes should be calculated as:</p> |
| <pre><code>buffer_size = bandwidth * RTT. |
| </code></pre><p>Where bandwidth is in <em>bytes per second</em> and network round trip time (RTT) is |
| in seconds. RTT can be easily measured using the <code>ping</code> utility.</p> |
| <p>For fast networks you may want to increase the buffer sizes from the |
| defaults.</p> |
| </li> |
| <li><p><code>tcpReceiveBufferSize</code>. This parameter determines the size of the TCP receive |
| buffer in bytes. The default value for this property is <code>32768</code> bytes |
| (32KiB).</p> |
| </li> |
| <li><p><code>writeBufferLowWaterMark</code>. This parameter determines the low water mark of |
| the Netty write buffer. Once the number of bytes queued in the write buffer |
| exceeded the high water mark and then dropped down below this value, Netty's |
| channel will start to be writable again. The default value for this property is |
| <code>32768</code> bytes (32KiB).</p> |
| </li> |
| <li><p><code>writeBufferHighWaterMark</code>. This parameter determines the high water mark of |
| the Netty write buffer. If the number of bytes queued in the write buffer |
| exceeds this value, Netty's channel will start to be not writable. The default |
| value for this property is <code>131072</code> bytes (128KiB).</p> |
| </li> |
| <li><p><code>batchDelay</code>. Before writing packets to the transport, Apache ActiveMQ |
| Artemis can be configured to batch up writes for a maximum of <code>batchDelay</code> |
| milliseconds. This can increase overall throughput for very small messages. It |
| does so at the expense of an increase in average latency for message transfer. |
| The default value for this property is <code>0</code> ms.</p> |
| </li> |
| <li><p><code>directDeliver</code>. When a message arrives on the server and is delivered to |
| waiting consumers, by default, the delivery is done on the same thread as |
| that on which the message arrived. This gives good latency in environments with |
| relatively small messages and a small number of consumers, but at the cost of |
| overall throughput and scalability - especially on multi-core machines. If you |
| want the lowest latency and a possible reduction in throughput then you can use |
| the default value for <code>directDeliver</code> (i.e. <code>true</code>). If you are willing to take |
| some small extra hit on latency but want the highest throughput set |
| <code>directDeliver</code> to <code>false</code>.</p> |
| </li> |
| <li><p><code>nioRemotingThreads</code> This is deprecated. It is replaced by <code>remotingThreads</code>, |
| if you are using this please update your configuration</p> |
| </li> |
| <li><p><code>remotingThreads</code>. Apache ActiveMQ Artemis will, by default, use a number of |
| threads equal to three times the number of cores (or hyper-threads) as |
| reported by <code>Runtime.getRuntime().availableProcessors()</code> for processing |
| incoming packets. If you want to override this value, you can set the number of |
| threads by specifying this parameter. The default value for this parameter is |
| <code>-1</code> which means use the value from |
| <code>Runtime.getRuntime().availableProcessors()</code> * 3.</p> |
| </li> |
| <li><p><code>localAddress</code>. When configured a Netty Connector it is possible to specify |
| which local address the client will use when connecting to the remote |
| address. This is typically used in the Application Server or when running |
| Embedded to control which address is used for outbound connections. If the |
| local-address is not set then the connector will use any local address |
| available</p> |
| </li> |
| <li><p><code>localPort</code>. When configured a Netty Connector it is possible to specify |
| which local port the client will use when connecting to the remote address. |
| This is typically used in the Application Server or when running Embedded to |
| control which port is used for outbound connections. If the local-port default |
| is used, which is 0, then the connector will let the system pick up an |
| ephemeral port. valid ports are 0 to 65535</p> |
| </li> |
| <li><p><code>connectionsAllowed</code>. This is only valid for acceptors. It limits the number |
| of connections which the acceptor will allow. When this limit is reached a |
| DEBUG level message is issued to the log, and the connection is refused. The |
| type of client in use will determine what happens when the connection is |
| refused. In the case of a <code>core</code> client, it will result in a |
| <code>org.apache.activemq.artemis.api.core.ActiveMQConnectionTimedOutException</code>.</p> |
| </li> |
| <li><p><code>handshake-timeout</code>. Prevents an unauthorised client opening a large number |
| of connections and just keeping them open. As connections each require a file |
| handle this consumes resources that are then unavailable to other clients. Once |
| the connection is authenticated, the usual rules can be enforced regarding |
| resource consumption. Default value is set to 10 seconds. Each integer is valid |
| value. When set value to zero or negative integer this feature is turned off. |
| Changing value needs to restart server to take effect.</p> |
| </li> |
| </ul> |
| <h3 id="configuring-netty-native-transport">Configuring Netty Native Transport</h3> |
| <p>Netty Native Transport support exists for selected OS platforms. This allows |
| Apache ActiveMQ Artemis to use native sockets/io instead of Java NIO.</p> |
| <p>These Native transports add features specific to a particular platform, |
| generate less garbage, and generally improve performance when compared to Java |
| NIO based transport.</p> |
| <p>Both Clients and Server can benefit from this.</p> |
| <p>Current Supported Platforms.</p> |
| <ul> |
| <li>Linux running 64bit JVM</li> |
| <li>MacOS running 64bit JVM</li> |
| </ul> |
| <p>Apache ActiveMQ Artemis will by default enable the corresponding native |
| transport if a supported platform is detected.</p> |
| <p>If running on an unsupported platform or any issues loading native libs, Apache |
| ActiveMQ Artemis will fallback onto Java NIO.</p> |
| <h4 id="linux-native-transport">Linux Native Transport</h4> |
| <p>On supported Linux platforms Epoll is used, @see |
| <a href="https://en.wikipedia.org/wiki/Epoll" target="_blank">https://en.wikipedia.org/wiki/Epoll</a>. </p> |
| <p>The following properties are specific to this native transport:</p> |
| <ul> |
| <li><code>useEpoll</code> enables the use of epoll if a supported linux platform is running |
| a 64bit JVM is detected. Setting this to <code>false</code> will force the use of Java |
| NIO instead of epoll. Default is <code>true</code></li> |
| </ul> |
| <h4 id="macos-native-transport">MacOS Native Transport</h4> |
| <p>On supported MacOS platforms KQueue is used, @see |
| <a href="https://en.wikipedia.org/wiki/Kqueue" target="_blank">https://en.wikipedia.org/wiki/Kqueue</a>. </p> |
| <p>The following properties are specific to this native transport:</p> |
| <ul> |
| <li><code>useKQueue</code> enables the use of kqueue if a supported MacOS platform running a |
| 64bit JVM is detected. Setting this to <code>false</code> will force the use of Java |
| NIO instead of kqueue. Default is <code>true</code></li> |
| </ul> |
| <h3 id="configuring-netty-ssl">Configuring Netty SSL</h3> |
| <p>Netty SSL is similar to the Netty TCP transport but it provides additional |
| security by encrypting TCP connections using the Secure Sockets Layer SSL</p> |
| <p>Please see the examples for a full working example of using Netty SSL.</p> |
| <p>Netty SSL uses all the same properties as Netty TCP but adds the following |
| additional properties:</p> |
| <ul> |
| <li><p><code>sslEnabled</code></p> |
| <p>Must be <code>true</code> to enable SSL. Default is <code>false</code>.</p> |
| </li> |
| <li><p><code>keyStorePath</code></p> |
| <p>When used on an <code>acceptor</code> this is the path to the SSL key store on the |
| server which holds the server's certificates (whether self-signed or signed by |
| an authority).</p> |
| <p>When used on a <code>connector</code> this is the path to the client-side SSL key store |
| which holds the client certificates. This is only relevant for a <code>connector</code> if |
| you are using 2-way SSL (i.e. mutual authentication). Although this value is |
| configured on the server, it is downloaded and used by the client. If the |
| client needs to use a different path from that set on the server then it can |
| override the server-side setting by either using the customary |
| "javax.net.ssl.keyStore" system property or the ActiveMQ-specific |
| "org.apache.activemq.ssl.keyStore" system property. The ActiveMQ-specific |
| system property is useful if another component on client is already making use |
| of the standard, Java system property.</p> |
| </li> |
| <li><p><code>keyStorePassword</code></p> |
| <p>When used on an <code>acceptor</code> this is the password for the server-side keystore.</p> |
| <p>When used on a <code>connector</code> this is the password for the client-side keystore. |
| This is only relevant for a <code>connector</code> if you are using 2-way SSL (i.e. mutual |
| authentication). Although this value can be configured on the server, it is |
| downloaded and used by the client. If the client needs to use a different |
| password from that set on the server then it can override the server-side |
| setting by either using the customary "javax.net.ssl.keyStorePassword" system |
| property or the ActiveMQ-specific "org.apache.activemq.ssl.keyStorePassword" |
| system property. The ActiveMQ-specific system property is useful if another |
| component on client is already making use of the standard, Java system |
| property.</p> |
| </li> |
| <li><p><code>trustStorePath</code></p> |
| <p>When used on an <code>acceptor</code> this is the path to the server-side SSL key store |
| that holds the keys of all the clients that the server trusts. This is only |
| relevant for an <code>acceptor</code> if you are using 2-way SSL (i.e. mutual |
| authentication).</p> |
| <p>When used on a <code>connector</code> this is the path to the client-side SSL key store |
| which holds the public keys of all the servers that the client trusts. Although |
| this value can be configured on the server, it is downloaded and used by the |
| client. If the client needs to use a different path from that set on the server |
| then it can override the server-side setting by either using the customary |
| "javax.net.ssl.trustStore" system property or the ActiveMQ-specific |
| "org.apache.activemq.ssl.trustStore" system property. The ActiveMQ-specific |
| system property is useful if another component on client is already making use |
| of the standard, Java system property.</p> |
| </li> |
| <li><p><code>trustStorePassword</code></p> |
| <p>When used on an <code>acceptor</code> this is the password for the server-side trust |
| store. This is only relevant for an <code>acceptor</code> if you are using 2-way SSL (i.e. |
| mutual authentication).</p> |
| <p>When used on a <code>connector</code> this is the password for the client-side |
| truststore. Although this value can be configured on the server, it is |
| downloaded and used by the client. If the client needs to use a different |
| password from that set on the server then it can override the server-side |
| setting by either using the customary "javax.net.ssl.trustStorePassword" system |
| property or the ActiveMQ-specific "org.apache.activemq.ssl.trustStorePassword" |
| system property. The ActiveMQ-specific system property is useful if another |
| component on client is already making use of the standard, Java system |
| property.</p> |
| </li> |
| <li><p><code>enabledCipherSuites</code></p> |
| <p>Whether used on an <code>acceptor</code> or <code>connector</code> this is a comma separated list |
| of cipher suites used for SSL communication. The default value is <code>null</code> which |
| means the JVM's default will be used.</p> |
| </li> |
| <li><p><code>enabledProtocols</code></p> |
| <p>Whether used on an <code>acceptor</code> or <code>connector</code> this is a comma separated list |
| of protocols used for SSL communication. The default value is <code>null</code> which |
| means the JVM's default will be used.</p> |
| </li> |
| <li><p><code>needClientAuth</code></p> |
| <p>This property is only for an <code>acceptor</code>. It tells a client connecting to this |
| acceptor that 2-way SSL is required. Valid values are <code>true</code> or <code>false</code>. |
| Default is <code>false</code>.</p> |
| <p><strong>Note:</strong> This property takes precedence over <code>wantClientAuth</code> and if its |
| value is set to true then <code>wantClientAuth</code> will be ignored.</p> |
| </li> |
| <li><p><code>wantClientAuth</code></p> |
| <p>This property is only for an <code>acceptor</code>. It tells a client connecting to this |
| acceptor that 2-way SSL is requested but not required. Valid values are <code>true</code> |
| or <code>false</code>. Default is <code>false</code>. </p> |
| <p><strong>Note:</strong> If the property <code>needClientAuth</code> is set to <code>true</code> then that |
| property will take precedence and this property will be ignored.</p> |
| </li> |
| <li><p><code>verifyHost</code></p> |
| <p>When used on an <code>acceptor</code> the <code>CN</code> of the connecting client's SSL |
| certificate will be compared to its hostname to verify they match. This is |
| useful only for 2-way SSL.</p> |
| <p>When used on a <code>connector</code> the <code>CN</code> of the server's SSL certificate will be |
| compared to its hostname to verify they match. This is useful for both 1-way |
| and 2-way SSL.</p> |
| <p>Valid values are <code>true</code> or <code>false</code>. Default is <code>false</code>.</p> |
| </li> |
| <li><p><code>trustAll</code></p> |
| <p>When used on a <code>connector</code> the client will trust the provided server |
| certificate implicitly, regardless of any configured trust store. <strong>Warning:</strong> |
| This setting is primarily for testing purposes only and should not be used in |
| production.</p> |
| <p>Valid values are <code>true</code> or <code>false</code>. Default is <code>false</code>.</p> |
| </li> |
| <li><p><code>forceSSLParameters</code></p> |
| <p>When used on a <code>connector</code> any SSL settings that are set as parameters on the |
| connector will be used instead of JVM system properties including both |
| javax.net.ssl and ActiveMQ system properties to configure the SSL context for |
| this connector.</p> |
| <p>Valid values are <code>true</code> or <code>false</code>. Default is <code>false</code>.</p> |
| </li> |
| <li><p><code>useDefaultSslContext</code></p> |
| <p>Only valid on a <code>connector</code>. Allows the <code>connector</code> to use the "default" SSL |
| context (via <code>SSLContext.getDefault()</code>) which can be set programmatically by |
| the client (via <code>SSLContext.setDefault(SSLContext)</code>). If set to <code>true</code> all |
| other SSL related parameters except for <code>sslEnabled</code> are ignored.</p> |
| <p>Valid values are <code>true</code> or <code>false</code>. Default is <code>false</code>.</p> |
| </li> |
| <li><p><code>sslProvider</code></p> |
| <p>Used to change the SSL Provider between <code>JDK</code> and <code>OPENSSL</code>. The default is |
| <code>JDK</code>. If used with <code>OPENSSL</code> you can add <code>netty-tcnative</code> to your classpath |
| to use the native installed openssl. This can be useful if you want to use |
| special ciphersuite - elliptic curve combinations which are support through |
| openssl but not through the JDK provider. See |
| <a href="https://en.wikipedia.org/wiki/Comparison_of_TLS_implementations" target="_blank">https://en.wikipedia.org/wiki/Comparison_of_TLS_implementations</a> for more |
| information's.</p> |
| </li> |
| <li><p><code>sniHost</code></p> |
| <p>When used on an <code>acceptor</code> the <code>sniHost</code> is a <em>regular expression</em> used to |
| match the <a href="https://tools.ietf.org/html/rfc6066" target="_blank"><code>server_name</code></a> extension on |
| incoming SSL connections. If the name doesn't match then the connection to |
| the acceptor will be rejected. A WARN message will be logged if this happens. |
| If the incoming connection doesn't include the <code>server_name</code> extension then |
| the connection will be accepted.</p> |
| <p>When used on a <code>connector</code> the <code>sniHost</code> value is used for the <code>server_name</code> |
| extension on the SSL connection.</p> |
| </li> |
| <li><p><code>trustManagerFactoryPlugin</code></p> |
| <p>This is valid on either an <code>acceptor</code> or <code>connector</code>. It defines the name |
| of the class which implements <code>org.apache.activemq.artemis.api.core.TrustManagerFactoryPlugin</code>. |
| This is a simple interface with a single method which returns a |
| <code>javax.net.ssl.TrustManagerFactory</code>. The <code>TrustManagerFactory</code> will be used |
| when the underlying <code>javax.net.ssl.SSLContext</code> is initialized. This allows |
| fine-grained customization of who/what the broker & client trusts.</p> |
| <p>This value takes precedence of all other SSL parameters which apply to the |
| trust manager (i.e. <code>trustAll</code>, <code>truststoreProvider</code>, <code>truststorePath</code>, |
| <code>truststorePassword</code>, <code>crlPath</code>).</p> |
| <p>Any plugin specified will need to be placed on the |
| <a href="using-server.html#adding-runtime-dependencies">broker's classpath</a>.</p> |
| </li> |
| </ul> |
| <h3 id="configuring-netty-http">Configuring Netty HTTP</h3> |
| <p>Netty HTTP tunnels packets over the HTTP protocol. It can be useful in |
| scenarios where firewalls only allow HTTP traffic to pass.</p> |
| <p>Please see the examples for a full working example of using Netty HTTP.</p> |
| <p>Netty HTTP uses the same properties as Netty TCP but adds the following |
| additional properties:</p> |
| <ul> |
| <li><p><code>httpEnabled</code>. This is now no longer needed. With single port support Apache |
| ActiveMQ Artemis will now automatically detect if http is being used and |
| configure itself.</p> |
| </li> |
| <li><p><code>httpClientIdleTime</code>. How long a client can be idle before sending an empty |
| http request to keep the connection alive</p> |
| </li> |
| <li><p><code>httpClientIdleScanPeriod</code>. How often, in milliseconds, to scan for idle |
| clients</p> |
| </li> |
| <li><p><code>httpResponseTime</code>. How long the server can wait before sending an empty http |
| response to keep the connection alive</p> |
| </li> |
| <li><p><code>httpServerScanPeriod</code>. How often, in milliseconds, to scan for clients |
| needing responses</p> |
| </li> |
| <li><p><code>httpRequiresSessionId</code>. If <code>true</code> the client will wait after the first call |
| to receive a session id. Used the http connector is connecting to servlet |
| acceptor (not recommended)</p> |
| </li> |
| </ul> |
| |
| |
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