From 9425990f532b1152c2d73db96c0f07ef5216a3d1 Mon Sep 17 00:00:00 2001
From: lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>
Date: Thu, 12 Nov 2009 00:43:48 +0000
Subject: Moving 2.x contribs

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835178 13f79535-47bb-0310-9956-ffa450edef68
---
 .../src/test/resources/apache-80/conf/httpd.conf   |  28 ++
 .../resources/apache-80/conf/workers.properties    |  18 +
 .../src/test/resources/tomcat-8085/conf/server.xml | 391 +++++++++++++++++++++
 .../webapps/balancer/WEB-INF/config/rules.xml      |  26 ++
 .../src/test/resources/tomcat-8086/conf/server.xml | 391 +++++++++++++++++++++
 .../src/test/resources/tomcat-8087/conf/server.xml | 391 +++++++++++++++++++++
 6 files changed, 1245 insertions(+)
 create mode 100644 sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/httpd.conf
 create mode 100644 sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/workers.properties
 create mode 100644 sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/conf/server.xml
 create mode 100644 sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/webapps/balancer/WEB-INF/config/rules.xml
 create mode 100644 sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8086/conf/server.xml
 create mode 100644 sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8087/conf/server.xml

(limited to 'sca-java-2.x/contrib/demos/load-balancing-webapp/src/test')

diff --git a/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/httpd.conf b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/httpd.conf
new file mode 100644
index 0000000000..37cf284d35
--- /dev/null
+++ b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/httpd.conf
@@ -0,0 +1,28 @@
+# Load mod_jk module
+# Update this path to match your modules location
+LoadModule    jk_module  modules/mod_jk.so
+
+# Declare the module for <IfModule directive> (remove this line on Apache 2.x)
+# AddModule     mod_jk.c
+# Where to find workers.properties
+# Update this path to match your conf directory location (put workers.properties next to httpd.conf)
+JkWorkersFile conf/workers.properties
+
+# Where to put jk shared memory
+# Update this path to match your local state directory or logs directory
+JkShmFile     logs/mod_jk.shm
+
+# Where to put jk logs
+# Update this path to match your logs directory location (put mod_jk.log next to access_log)
+JkLogFile     logs/mod_jk.log
+
+# Set the jk log level [debug/error/info]
+JkLogLevel    info
+
+# Select the timestamp log format
+JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
+
+# Send everything for context /examples to worker named worker1 (ajp13)
+# JkMount  /examples/* worker1
+# Send everything for context /* to the router
+JkMount  /* router
diff --git a/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/workers.properties b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/workers.properties
new file mode 100644
index 0000000000..9228c4fd8e
--- /dev/null
+++ b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/apache-80/conf/workers.properties
@@ -0,0 +1,18 @@
+  # Load balancer looks after the workers
+  worker.list=router
+  
+  # The load balacer
+  worker.router.type=lb
+  worker.router.balance_workers=worker1,worker2
+
+  # Set properties for worker1 (ajp13)
+  worker.worker1.type=ajp13
+  worker.worker1.host=localhost
+  worker.worker1.port=8010
+  worker.worker1.lbfactor=1
+
+  # Set properties for worker1 (ajp13)
+  worker.worker2.type=ajp13
+  worker.worker2.host=localhost
+  worker.worker2.port=8011
+  worker.worker2.lbfactor=1
diff --git a/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/conf/server.xml b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/conf/server.xml
new file mode 100644
index 0000000000..920fa7b037
--- /dev/null
+++ b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/conf/server.xml
@@ -0,0 +1,391 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  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.
+-->
+<!-- Example Server Configuration File -->
+<!-- Note that component elements are nested corresponding to their
+     parent-child relationships with each other -->
+
+<!-- A "Server" is a singleton element that represents the entire JVM,
+     which may contain one or more "Service" instances.  The Server
+     listens for a shutdown command on the indicated port.
+
+     Note:  A "Server" is not itself a "Container", so you may not
+     define subcomponents such as "Valves" or "Loggers" at this level.
+ -->
+
+<Server port="8005" shutdown="SHUTDOWN">
+
+  <!-- Comment these entries out to disable JMX MBeans support used for the 
+       administration web application -->
+  <Listener className="org.apache.catalina.core.AprLifecycleListener" />
+  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
+  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
+  <Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/>
+
+  <!-- Global JNDI resources -->
+  <GlobalNamingResources>
+
+    <!-- Test entry for demonstration purposes -->
+    <Environment name="simpleValue" type="java.lang.Integer" value="30"/>
+
+    <!-- Editable user database that can also be used by
+         UserDatabaseRealm to authenticate users -->
+    <Resource name="UserDatabase" auth="Container"
+              type="org.apache.catalina.UserDatabase"
+       description="User database that can be updated and saved"
+           factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
+          pathname="conf/tomcat-users.xml" />
+
+  </GlobalNamingResources>
+
+  <!-- A "Service" is a collection of one or more "Connectors" that share
+       a single "Container" (and therefore the web applications visible
+       within that Container).  Normally, that Container is an "Engine",
+       but this is not required.
+
+       Note:  A "Service" is not itself a "Container", so you may not
+       define subcomponents such as "Valves" or "Loggers" at this level.
+   -->
+
+  <!-- Define the Tomcat Stand-Alone Service -->
+  <Service name="Catalina">
+
+    <!-- A "Connector" represents an endpoint by which requests are received
+         and responses are returned.  Each Connector passes requests on to the
+         associated "Container" (normally an Engine) for processing.
+
+         By default, a non-SSL HTTP/1.1 Connector is established on port 8080.
+         You can also enable an SSL HTTP/1.1 Connector on port 8443 by
+         following the instructions below and uncommenting the second Connector
+         entry.  SSL support requires the following steps (see the SSL Config
+         HOWTO in the Tomcat 5 documentation bundle for more detailed
+         instructions):
+         * If your JDK version 1.3 or prior, download and install JSSE 1.0.2 or
+           later, and put the JAR files into "$JAVA_HOME/jre/lib/ext".
+         * Execute:
+             %JAVA_HOME%\bin\keytool -genkey -alias tomcat -keyalg RSA (Windows)
+             $JAVA_HOME/bin/keytool -genkey -alias tomcat -keyalg RSA  (Unix)
+           with a password value of "changeit" for both the certificate and
+           the keystore itself.
+
+         By default, DNS lookups are enabled when a web application calls
+         request.getRemoteHost().  This can have an adverse impact on
+         performance, so you can disable it by setting the
+         "enableLookups" attribute to "false".  When DNS lookups are disabled,
+         request.getRemoteHost() will return the String version of the
+         IP address of the remote client.
+    -->
+
+    <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
+    <Connector port="8085" maxHttpHeaderSize="8192"
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" redirectPort="8443" acceptCount="100"
+               connectionTimeout="20000" disableUploadTimeout="true" />
+    <!-- Note : To disable connection timeouts, set connectionTimeout value
+     to 0 -->
+	
+	<!-- Note : To use gzip compression you could set the following properties :
+	
+			   compression="on" 
+			   compressionMinSize="2048" 
+			   noCompressionUserAgents="gozilla, traviata" 
+			   compressableMimeType="text/html,text/xml"
+	-->
+
+    <!-- Define a SSL HTTP/1.1 Connector on port 8443 -->
+    <!--
+    <Connector port="8443" maxHttpHeaderSize="8192"
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" disableUploadTimeout="true"
+               acceptCount="100" scheme="https" secure="true"
+               clientAuth="false" sslProtocol="TLS" />
+    -->
+
+    <!-- Define an AJP 1.3 Connector on port 8009 -->
+    <Connector port="8009" 
+               enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />
+
+    <!-- Define a Proxied HTTP/1.1 Connector on port 8082 -->
+    <!-- See proxy documentation for more information about using this. -->
+    <!--
+    <Connector port="8082" 
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" acceptCount="100" connectionTimeout="20000"
+               proxyPort="80" disableUploadTimeout="true" />
+    -->
+
+    <!-- An Engine represents the entry point (within Catalina) that processes
+         every request.  The Engine implementation for Tomcat stand alone
+         analyzes the HTTP headers included with the request, and passes them
+         on to the appropriate Host (virtual host). -->
+
+    <!-- You should set jvmRoute to support load-balancing via AJP ie :
+    <Engine name="Standalone" defaultHost="localhost" jvmRoute="jvm1">         
+    --> 
+         
+    <!-- Define the top level container in our container hierarchy -->
+    <Engine name="Catalina" defaultHost="localhost">
+
+      <!-- The request dumper valve dumps useful debugging information about
+           the request headers and cookies that were received, and the response
+           headers and cookies that were sent, for all requests received by
+           this instance of Tomcat.  If you care only about requests to a
+           particular virtual host, or a particular application, nest this
+           element inside the corresponding <Host> or <Context> entry instead.
+
+           For a similar mechanism that is portable to all Servlet 2.4
+           containers, check out the "RequestDumperFilter" Filter in the
+           example application (the source for this filter may be found in
+           "$CATALINA_HOME/webapps/examples/WEB-INF/classes/filters").
+
+           Note that this Valve uses the platform's default character encoding.
+           This may cause problems for developers in another encoding, e.g.
+           UTF-8.  Use the RequestDumperFilter instead.
+
+           Also note that enabling this Valve will write a ton of stuff to your
+           logs.  They are likely to grow quite large.  This extensive log writing
+           will definitely slow down your server.
+
+           Request dumping is disabled by default.  Uncomment the following
+           element to enable it. -->
+      <!--
+      <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
+      -->
+
+      <!-- Because this Realm is here, an instance will be shared globally -->
+
+      <!-- This Realm uses the UserDatabase configured in the global JNDI
+           resources under the key "UserDatabase".  Any edits
+           that are performed against this UserDatabase are immediately
+           available for use by the Realm.  -->
+      <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
+             resourceName="UserDatabase"/>
+
+      <!-- Comment out the old realm but leave here for now in case we
+           need to go back quickly -->
+      <!--
+      <Realm className="org.apache.catalina.realm.MemoryRealm" />
+      -->
+
+      <!-- Replace the above Realm with one of the following to get a Realm
+           stored in a database and accessed via JDBC -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="org.gjt.mm.mysql.Driver"
+          connectionURL="jdbc:mysql://localhost/authority"
+         connectionName="test" connectionPassword="test"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="oracle.jdbc.driver.OracleDriver"
+          connectionURL="jdbc:oracle:thin:@ntserver:1521:ORCL"
+         connectionName="scott" connectionPassword="tiger"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="sun.jdbc.odbc.JdbcOdbcDriver"
+          connectionURL="jdbc:odbc:CATALINA"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!-- Define the default virtual host
+           Note: XML Schema validation will not work with Xerces 2.2.
+       -->
+      <Host name="localhost" appBase="webapps"
+       unpackWARs="true" autoDeploy="true"
+       xmlValidation="false" xmlNamespaceAware="false">
+
+        <!-- Defines a cluster for this node,
+             By defining this element, means that every manager will be changed.
+             So when running a cluster, only make sure that you have webapps in there
+             that need to be clustered and remove the other ones.
+             A cluster has the following parameters:
+
+             className = the fully qualified name of the cluster class
+
+             clusterName = a descriptive name for your cluster, can be anything
+
+             mcastAddr = the multicast address, has to be the same for all the nodes
+
+             mcastPort = the multicast port, has to be the same for all the nodes
+             
+             mcastBindAddress = bind the multicast socket to a specific address
+             
+             mcastTTL = the multicast TTL if you want to limit your broadcast
+             
+             mcastSoTimeout = the multicast readtimeout 
+
+             mcastFrequency = the number of milliseconds in between sending a "I'm alive" heartbeat
+
+             mcastDropTime = the number a milliseconds before a node is considered "dead" if no heartbeat is received
+
+             tcpThreadCount = the number of threads to handle incoming replication requests, optimal would be the same amount of threads as nodes 
+
+             tcpListenAddress = the listen address (bind address) for TCP cluster request on this host, 
+                                in case of multiple ethernet cards.
+                                auto means that address becomes
+                                InetAddress.getLocalHost().getHostAddress()
+
+             tcpListenPort = the tcp listen port
+
+             tcpSelectorTimeout = the timeout (ms) for the Selector.select() method in case the OS
+                                  has a wakup bug in java.nio. Set to 0 for no timeout
+
+             printToScreen = true means that managers will also print to std.out
+
+             expireSessionsOnShutdown = true means that 
+
+             useDirtyFlag = true means that we only replicate a session after setAttribute,removeAttribute has been called.
+                            false means to replicate the session after each request.
+                            false means that replication would work for the following piece of code: (only for SimpleTcpReplicationManager)
+                            <%
+                            HashMap map = (HashMap)session.getAttribute("map");
+                            map.put("key","value");
+                            %>
+             replicationMode = can be either 'pooled', 'synchronous' or 'asynchronous'.
+                               * Pooled means that the replication happens using several sockets in a synchronous way. Ie, the data gets replicated, then the request return. This is the same as the 'synchronous' setting except it uses a pool of sockets, hence it is multithreaded. This is the fastest and safest configuration. To use this, also increase the nr of tcp threads that you have dealing with replication.
+                               * Synchronous means that the thread that executes the request, is also the
+                               thread the replicates the data to the other nodes, and will not return until all
+                               nodes have received the information.
+                               * Asynchronous means that there is a specific 'sender' thread for each cluster node,
+                               so the request thread will queue the replication request into a "smart" queue,
+                               and then return to the client.
+                               The "smart" queue is a queue where when a session is added to the queue, and the same session
+                               already exists in the queue from a previous request, that session will be replaced
+                               in the queue instead of replicating two requests. This almost never happens, unless there is a 
+                               large network delay.
+        -->             
+        <!--
+            When configuring for clustering, you also add in a valve to catch all the requests
+            coming in, at the end of the request, the session may or may not be replicated.
+            A session is replicated if and only if all the conditions are met:
+            1. useDirtyFlag is true or setAttribute or removeAttribute has been called AND
+            2. a session exists (has been created)
+            3. the request is not trapped by the "filter" attribute
+
+            The filter attribute is to filter out requests that could not modify the session,
+            hence we don't replicate the session after the end of this request.
+            The filter is negative, ie, anything you put in the filter, you mean to filter out,
+            ie, no replication will be done on requests that match one of the filters.
+            The filter attribute is delimited by ;, so you can't escape out ; even if you wanted to.
+
+            filter=".*\.gif;.*\.js;" means that we will not replicate the session after requests with the URI
+            ending with .gif and .js are intercepted.
+            
+            The deployer element can be used to deploy apps cluster wide.
+            Currently the deployment only deploys/undeploys to working members in the cluster
+            so no WARs are copied upons startup of a broken node.
+            The deployer watches a directory (watchDir) for WAR files when watchEnabled="true"
+            When a new war file is added the war gets deployed to the local instance,
+            and then deployed to the other instances in the cluster.
+            When a war file is deleted from the watchDir the war is undeployed locally 
+            and cluster wide
+        -->
+        
+        <!--
+        <Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
+                 managerClassName="org.apache.catalina.cluster.session.DeltaManager"
+                 expireSessionsOnShutdown="false"
+                 useDirtyFlag="true"
+                 notifyListenersOnReplication="true">
+
+            <Membership 
+                className="org.apache.catalina.cluster.mcast.McastService"
+                mcastAddr="228.0.0.4"
+                mcastPort="45564"
+                mcastFrequency="500"
+                mcastDropTime="3000"/>
+
+            <Receiver 
+                className="org.apache.catalina.cluster.tcp.ReplicationListener"
+                tcpListenAddress="auto"
+                tcpListenPort="4001"
+                tcpSelectorTimeout="100"
+                tcpThreadCount="6"/>
+
+            <Sender
+                className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
+                replicationMode="pooled"
+                ackTimeout="15000"
+                waitForAck="true"/>
+
+            <Valve className="org.apache.catalina.cluster.tcp.ReplicationValve"
+                   filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
+                   
+            <Deployer className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
+                      tempDir="/tmp/war-temp/"
+                      deployDir="/tmp/war-deploy/"
+                      watchDir="/tmp/war-listen/"
+                      watchEnabled="false"/>
+                      
+            <ClusterListener className="org.apache.catalina.cluster.session.ClusterSessionListener"/>
+        </Cluster>
+        -->        
+
+
+
+        <!-- Normally, users must authenticate themselves to each web app
+             individually.  Uncomment the following entry if you would like
+             a user to be authenticated the first time they encounter a
+             resource protected by a security constraint, and then have that
+             user identity maintained across *all* web applications contained
+             in this virtual host. -->
+        <!--
+        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
+        -->
+
+        <!-- Access log processes all requests for this virtual host.  By
+             default, log files are created in the "logs" directory relative to
+             $CATALINA_HOME.  If you wish, you can specify a different
+             directory with the "directory" attribute.  Specify either a relative
+             (to $CATALINA_HOME) or absolute path to the desired directory.
+        -->
+        <!--
+        <Valve className="org.apache.catalina.valves.AccessLogValve"
+                 directory="logs"  prefix="localhost_access_log." suffix=".txt"
+                 pattern="common" resolveHosts="false"/>
+        -->
+
+        <!-- Access log processes all requests for this virtual host.  By
+             default, log files are created in the "logs" directory relative to
+             $CATALINA_HOME.  If you wish, you can specify a different
+             directory with the "directory" attribute.  Specify either a relative
+             (to $CATALINA_HOME) or absolute path to the desired directory.
+             This access log implementation is optimized for maximum performance,
+             but is hardcoded to support only the "common" and "combined" patterns.
+        -->
+        <!--
+        <Valve className="org.apache.catalina.valves.FastCommonAccessLogValve"
+                 directory="logs"  prefix="localhost_access_log." suffix=".txt"
+                 pattern="common" resolveHosts="false"/>
+        -->
+
+      </Host>
+
+    </Engine>
+
+  </Service>
+
+</Server>
diff --git a/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/webapps/balancer/WEB-INF/config/rules.xml b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/webapps/balancer/WEB-INF/config/rules.xml
new file mode 100644
index 0000000000..7486dc8148
--- /dev/null
+++ b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8085/webapps/balancer/WEB-INF/config/rules.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  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.
+-->
+<rules>
+  <rule className="org.apache.tuscany.sca.demos.loadbalancer.rule.RoundRobinRule"
+    workerCount="2"
+    redirectUrl="http://localhost:8086" />
+
+  <rule className="org.apache.tuscany.sca.demos.loadbalancer.rule.RoundRobinRule"
+    workerCount="1"
+    redirectUrl="http://localhost:8087" />
+</rules>
diff --git a/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8086/conf/server.xml b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8086/conf/server.xml
new file mode 100644
index 0000000000..5ecb8fe5c4
--- /dev/null
+++ b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8086/conf/server.xml
@@ -0,0 +1,391 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  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.
+-->
+<!-- Example Server Configuration File -->
+<!-- Note that component elements are nested corresponding to their
+     parent-child relationships with each other -->
+
+<!-- A "Server" is a singleton element that represents the entire JVM,
+     which may contain one or more "Service" instances.  The Server
+     listens for a shutdown command on the indicated port.
+
+     Note:  A "Server" is not itself a "Container", so you may not
+     define subcomponents such as "Valves" or "Loggers" at this level.
+ -->
+
+<Server port="8006" shutdown="SHUTDOWN">
+
+  <!-- Comment these entries out to disable JMX MBeans support used for the 
+       administration web application -->
+  <Listener className="org.apache.catalina.core.AprLifecycleListener" />
+  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
+  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
+  <Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/>
+
+  <!-- Global JNDI resources -->
+  <GlobalNamingResources>
+
+    <!-- Test entry for demonstration purposes -->
+    <Environment name="simpleValue" type="java.lang.Integer" value="30"/>
+
+    <!-- Editable user database that can also be used by
+         UserDatabaseRealm to authenticate users -->
+    <Resource name="UserDatabase" auth="Container"
+              type="org.apache.catalina.UserDatabase"
+       description="User database that can be updated and saved"
+           factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
+          pathname="conf/tomcat-users.xml" />
+
+  </GlobalNamingResources>
+
+  <!-- A "Service" is a collection of one or more "Connectors" that share
+       a single "Container" (and therefore the web applications visible
+       within that Container).  Normally, that Container is an "Engine",
+       but this is not required.
+
+       Note:  A "Service" is not itself a "Container", so you may not
+       define subcomponents such as "Valves" or "Loggers" at this level.
+   -->
+
+  <!-- Define the Tomcat Stand-Alone Service -->
+  <Service name="Catalina">
+
+    <!-- A "Connector" represents an endpoint by which requests are received
+         and responses are returned.  Each Connector passes requests on to the
+         associated "Container" (normally an Engine) for processing.
+
+         By default, a non-SSL HTTP/1.1 Connector is established on port 8080.
+         You can also enable an SSL HTTP/1.1 Connector on port 8443 by
+         following the instructions below and uncommenting the second Connector
+         entry.  SSL support requires the following steps (see the SSL Config
+         HOWTO in the Tomcat 5 documentation bundle for more detailed
+         instructions):
+         * If your JDK version 1.3 or prior, download and install JSSE 1.0.2 or
+           later, and put the JAR files into "$JAVA_HOME/jre/lib/ext".
+         * Execute:
+             %JAVA_HOME%\bin\keytool -genkey -alias tomcat -keyalg RSA (Windows)
+             $JAVA_HOME/bin/keytool -genkey -alias tomcat -keyalg RSA  (Unix)
+           with a password value of "changeit" for both the certificate and
+           the keystore itself.
+
+         By default, DNS lookups are enabled when a web application calls
+         request.getRemoteHost().  This can have an adverse impact on
+         performance, so you can disable it by setting the
+         "enableLookups" attribute to "false".  When DNS lookups are disabled,
+         request.getRemoteHost() will return the String version of the
+         IP address of the remote client.
+    -->
+
+    <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
+    <Connector port="8086" maxHttpHeaderSize="8192"
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" redirectPort="8443" acceptCount="100"
+               connectionTimeout="20000" disableUploadTimeout="true" />
+    <!-- Note : To disable connection timeouts, set connectionTimeout value
+     to 0 -->
+	
+	<!-- Note : To use gzip compression you could set the following properties :
+	
+			   compression="on" 
+			   compressionMinSize="2048" 
+			   noCompressionUserAgents="gozilla, traviata" 
+			   compressableMimeType="text/html,text/xml"
+	-->
+
+    <!-- Define a SSL HTTP/1.1 Connector on port 8443 -->
+    <!--
+    <Connector port="8443" maxHttpHeaderSize="8192"
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" disableUploadTimeout="true"
+               acceptCount="100" scheme="https" secure="true"
+               clientAuth="false" sslProtocol="TLS" />
+    -->
+
+    <!-- Define an AJP 1.3 Connector on port 8010 -->
+    <Connector port="8010" 
+               enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />
+
+    <!-- Define a Proxied HTTP/1.1 Connector on port 8082 -->
+    <!-- See proxy documentation for more information about using this. -->
+    <!--
+    <Connector port="8082" 
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" acceptCount="100" connectionTimeout="20000"
+               proxyPort="80" disableUploadTimeout="true" />
+    -->
+
+    <!-- An Engine represents the entry point (within Catalina) that processes
+         every request.  The Engine implementation for Tomcat stand alone
+         analyzes the HTTP headers included with the request, and passes them
+         on to the appropriate Host (virtual host). -->
+
+    <!-- You should set jvmRoute to support load-balancing via AJP ie :
+    <Engine name="Standalone" defaultHost="localhost" jvmRoute="jvm1">         
+    --> 
+         
+    <!-- Define the top level container in our container hierarchy -->
+    <Engine name="Catalina" defaultHost="localhost">
+
+      <!-- The request dumper valve dumps useful debugging information about
+           the request headers and cookies that were received, and the response
+           headers and cookies that were sent, for all requests received by
+           this instance of Tomcat.  If you care only about requests to a
+           particular virtual host, or a particular application, nest this
+           element inside the corresponding <Host> or <Context> entry instead.
+
+           For a similar mechanism that is portable to all Servlet 2.4
+           containers, check out the "RequestDumperFilter" Filter in the
+           example application (the source for this filter may be found in
+           "$CATALINA_HOME/webapps/examples/WEB-INF/classes/filters").
+
+           Note that this Valve uses the platform's default character encoding.
+           This may cause problems for developers in another encoding, e.g.
+           UTF-8.  Use the RequestDumperFilter instead.
+
+           Also note that enabling this Valve will write a ton of stuff to your
+           logs.  They are likely to grow quite large.  This extensive log writing
+           will definitely slow down your server.
+
+           Request dumping is disabled by default.  Uncomment the following
+           element to enable it. -->
+      <!--
+      <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
+      -->
+
+      <!-- Because this Realm is here, an instance will be shared globally -->
+
+      <!-- This Realm uses the UserDatabase configured in the global JNDI
+           resources under the key "UserDatabase".  Any edits
+           that are performed against this UserDatabase are immediately
+           available for use by the Realm.  -->
+      <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
+             resourceName="UserDatabase"/>
+
+      <!-- Comment out the old realm but leave here for now in case we
+           need to go back quickly -->
+      <!--
+      <Realm className="org.apache.catalina.realm.MemoryRealm" />
+      -->
+
+      <!-- Replace the above Realm with one of the following to get a Realm
+           stored in a database and accessed via JDBC -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="org.gjt.mm.mysql.Driver"
+          connectionURL="jdbc:mysql://localhost/authority"
+         connectionName="test" connectionPassword="test"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="oracle.jdbc.driver.OracleDriver"
+          connectionURL="jdbc:oracle:thin:@ntserver:1521:ORCL"
+         connectionName="scott" connectionPassword="tiger"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="sun.jdbc.odbc.JdbcOdbcDriver"
+          connectionURL="jdbc:odbc:CATALINA"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!-- Define the default virtual host
+           Note: XML Schema validation will not work with Xerces 2.2.
+       -->
+      <Host name="localhost" appBase="webapps"
+       unpackWARs="true" autoDeploy="true"
+       xmlValidation="false" xmlNamespaceAware="false">
+
+        <!-- Defines a cluster for this node,
+             By defining this element, means that every manager will be changed.
+             So when running a cluster, only make sure that you have webapps in there
+             that need to be clustered and remove the other ones.
+             A cluster has the following parameters:
+
+             className = the fully qualified name of the cluster class
+
+             clusterName = a descriptive name for your cluster, can be anything
+
+             mcastAddr = the multicast address, has to be the same for all the nodes
+
+             mcastPort = the multicast port, has to be the same for all the nodes
+             
+             mcastBindAddress = bind the multicast socket to a specific address
+             
+             mcastTTL = the multicast TTL if you want to limit your broadcast
+             
+             mcastSoTimeout = the multicast readtimeout 
+
+             mcastFrequency = the number of milliseconds in between sending a "I'm alive" heartbeat
+
+             mcastDropTime = the number a milliseconds before a node is considered "dead" if no heartbeat is received
+
+             tcpThreadCount = the number of threads to handle incoming replication requests, optimal would be the same amount of threads as nodes 
+
+             tcpListenAddress = the listen address (bind address) for TCP cluster request on this host, 
+                                in case of multiple ethernet cards.
+                                auto means that address becomes
+                                InetAddress.getLocalHost().getHostAddress()
+
+             tcpListenPort = the tcp listen port
+
+             tcpSelectorTimeout = the timeout (ms) for the Selector.select() method in case the OS
+                                  has a wakup bug in java.nio. Set to 0 for no timeout
+
+             printToScreen = true means that managers will also print to std.out
+
+             expireSessionsOnShutdown = true means that 
+
+             useDirtyFlag = true means that we only replicate a session after setAttribute,removeAttribute has been called.
+                            false means to replicate the session after each request.
+                            false means that replication would work for the following piece of code: (only for SimpleTcpReplicationManager)
+                            <%
+                            HashMap map = (HashMap)session.getAttribute("map");
+                            map.put("key","value");
+                            %>
+             replicationMode = can be either 'pooled', 'synchronous' or 'asynchronous'.
+                               * Pooled means that the replication happens using several sockets in a synchronous way. Ie, the data gets replicated, then the request return. This is the same as the 'synchronous' setting except it uses a pool of sockets, hence it is multithreaded. This is the fastest and safest configuration. To use this, also increase the nr of tcp threads that you have dealing with replication.
+                               * Synchronous means that the thread that executes the request, is also the
+                               thread the replicates the data to the other nodes, and will not return until all
+                               nodes have received the information.
+                               * Asynchronous means that there is a specific 'sender' thread for each cluster node,
+                               so the request thread will queue the replication request into a "smart" queue,
+                               and then return to the client.
+                               The "smart" queue is a queue where when a session is added to the queue, and the same session
+                               already exists in the queue from a previous request, that session will be replaced
+                               in the queue instead of replicating two requests. This almost never happens, unless there is a 
+                               large network delay.
+        -->             
+        <!--
+            When configuring for clustering, you also add in a valve to catch all the requests
+            coming in, at the end of the request, the session may or may not be replicated.
+            A session is replicated if and only if all the conditions are met:
+            1. useDirtyFlag is true or setAttribute or removeAttribute has been called AND
+            2. a session exists (has been created)
+            3. the request is not trapped by the "filter" attribute
+
+            The filter attribute is to filter out requests that could not modify the session,
+            hence we don't replicate the session after the end of this request.
+            The filter is negative, ie, anything you put in the filter, you mean to filter out,
+            ie, no replication will be done on requests that match one of the filters.
+            The filter attribute is delimited by ;, so you can't escape out ; even if you wanted to.
+
+            filter=".*\.gif;.*\.js;" means that we will not replicate the session after requests with the URI
+            ending with .gif and .js are intercepted.
+            
+            The deployer element can be used to deploy apps cluster wide.
+            Currently the deployment only deploys/undeploys to working members in the cluster
+            so no WARs are copied upons startup of a broken node.
+            The deployer watches a directory (watchDir) for WAR files when watchEnabled="true"
+            When a new war file is added the war gets deployed to the local instance,
+            and then deployed to the other instances in the cluster.
+            When a war file is deleted from the watchDir the war is undeployed locally 
+            and cluster wide
+        -->
+        
+        <!--
+        <Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
+                 managerClassName="org.apache.catalina.cluster.session.DeltaManager"
+                 expireSessionsOnShutdown="false"
+                 useDirtyFlag="true"
+                 notifyListenersOnReplication="true">
+
+            <Membership 
+                className="org.apache.catalina.cluster.mcast.McastService"
+                mcastAddr="228.0.0.4"
+                mcastPort="45564"
+                mcastFrequency="500"
+                mcastDropTime="3000"/>
+
+            <Receiver 
+                className="org.apache.catalina.cluster.tcp.ReplicationListener"
+                tcpListenAddress="auto"
+                tcpListenPort="4001"
+                tcpSelectorTimeout="100"
+                tcpThreadCount="6"/>
+
+            <Sender
+                className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
+                replicationMode="pooled"
+                ackTimeout="15000"
+                waitForAck="true"/>
+
+            <Valve className="org.apache.catalina.cluster.tcp.ReplicationValve"
+                   filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
+                   
+            <Deployer className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
+                      tempDir="/tmp/war-temp/"
+                      deployDir="/tmp/war-deploy/"
+                      watchDir="/tmp/war-listen/"
+                      watchEnabled="false"/>
+                      
+            <ClusterListener className="org.apache.catalina.cluster.session.ClusterSessionListener"/>
+        </Cluster>
+        -->        
+
+
+
+        <!-- Normally, users must authenticate themselves to each web app
+             individually.  Uncomment the following entry if you would like
+             a user to be authenticated the first time they encounter a
+             resource protected by a security constraint, and then have that
+             user identity maintained across *all* web applications contained
+             in this virtual host. -->
+        <!--
+        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
+        -->
+
+        <!-- Access log processes all requests for this virtual host.  By
+             default, log files are created in the "logs" directory relative to
+             $CATALINA_HOME.  If you wish, you can specify a different
+             directory with the "directory" attribute.  Specify either a relative
+             (to $CATALINA_HOME) or absolute path to the desired directory.
+        -->
+        <!--
+        <Valve className="org.apache.catalina.valves.AccessLogValve"
+                 directory="logs"  prefix="localhost_access_log." suffix=".txt"
+                 pattern="common" resolveHosts="false"/>
+        -->
+
+        <!-- Access log processes all requests for this virtual host.  By
+             default, log files are created in the "logs" directory relative to
+             $CATALINA_HOME.  If you wish, you can specify a different
+             directory with the "directory" attribute.  Specify either a relative
+             (to $CATALINA_HOME) or absolute path to the desired directory.
+             This access log implementation is optimized for maximum performance,
+             but is hardcoded to support only the "common" and "combined" patterns.
+        -->
+        <!--
+        <Valve className="org.apache.catalina.valves.FastCommonAccessLogValve"
+                 directory="logs"  prefix="localhost_access_log." suffix=".txt"
+                 pattern="common" resolveHosts="false"/>
+        -->
+
+      </Host>
+
+    </Engine>
+
+  </Service>
+
+</Server>
diff --git a/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8087/conf/server.xml b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8087/conf/server.xml
new file mode 100644
index 0000000000..f83c68191c
--- /dev/null
+++ b/sca-java-2.x/contrib/demos/load-balancing-webapp/src/test/resources/tomcat-8087/conf/server.xml
@@ -0,0 +1,391 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  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.
+-->
+<!-- Example Server Configuration File -->
+<!-- Note that component elements are nested corresponding to their
+     parent-child relationships with each other -->
+
+<!-- A "Server" is a singleton element that represents the entire JVM,
+     which may contain one or more "Service" instances.  The Server
+     listens for a shutdown command on the indicated port.
+
+     Note:  A "Server" is not itself a "Container", so you may not
+     define subcomponents such as "Valves" or "Loggers" at this level.
+ -->
+
+<Server port="8007" shutdown="SHUTDOWN">
+
+  <!-- Comment these entries out to disable JMX MBeans support used for the 
+       administration web application -->
+  <Listener className="org.apache.catalina.core.AprLifecycleListener" />
+  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
+  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
+  <Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/>
+
+  <!-- Global JNDI resources -->
+  <GlobalNamingResources>
+
+    <!-- Test entry for demonstration purposes -->
+    <Environment name="simpleValue" type="java.lang.Integer" value="30"/>
+
+    <!-- Editable user database that can also be used by
+         UserDatabaseRealm to authenticate users -->
+    <Resource name="UserDatabase" auth="Container"
+              type="org.apache.catalina.UserDatabase"
+       description="User database that can be updated and saved"
+           factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
+          pathname="conf/tomcat-users.xml" />
+
+  </GlobalNamingResources>
+
+  <!-- A "Service" is a collection of one or more "Connectors" that share
+       a single "Container" (and therefore the web applications visible
+       within that Container).  Normally, that Container is an "Engine",
+       but this is not required.
+
+       Note:  A "Service" is not itself a "Container", so you may not
+       define subcomponents such as "Valves" or "Loggers" at this level.
+   -->
+
+  <!-- Define the Tomcat Stand-Alone Service -->
+  <Service name="Catalina">
+
+    <!-- A "Connector" represents an endpoint by which requests are received
+         and responses are returned.  Each Connector passes requests on to the
+         associated "Container" (normally an Engine) for processing.
+
+         By default, a non-SSL HTTP/1.1 Connector is established on port 8080.
+         You can also enable an SSL HTTP/1.1 Connector on port 8443 by
+         following the instructions below and uncommenting the second Connector
+         entry.  SSL support requires the following steps (see the SSL Config
+         HOWTO in the Tomcat 5 documentation bundle for more detailed
+         instructions):
+         * If your JDK version 1.3 or prior, download and install JSSE 1.0.2 or
+           later, and put the JAR files into "$JAVA_HOME/jre/lib/ext".
+         * Execute:
+             %JAVA_HOME%\bin\keytool -genkey -alias tomcat -keyalg RSA (Windows)
+             $JAVA_HOME/bin/keytool -genkey -alias tomcat -keyalg RSA  (Unix)
+           with a password value of "changeit" for both the certificate and
+           the keystore itself.
+
+         By default, DNS lookups are enabled when a web application calls
+         request.getRemoteHost().  This can have an adverse impact on
+         performance, so you can disable it by setting the
+         "enableLookups" attribute to "false".  When DNS lookups are disabled,
+         request.getRemoteHost() will return the String version of the
+         IP address of the remote client.
+    -->
+
+    <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
+    <Connector port="8087" maxHttpHeaderSize="8192"
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" redirectPort="8443" acceptCount="100"
+               connectionTimeout="20000" disableUploadTimeout="true" />
+    <!-- Note : To disable connection timeouts, set connectionTimeout value
+     to 0 -->
+	
+	<!-- Note : To use gzip compression you could set the following properties :
+	
+			   compression="on" 
+			   compressionMinSize="2048" 
+			   noCompressionUserAgents="gozilla, traviata" 
+			   compressableMimeType="text/html,text/xml"
+	-->
+
+    <!-- Define a SSL HTTP/1.1 Connector on port 8443 -->
+    <!--
+    <Connector port="8443" maxHttpHeaderSize="8192"
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" disableUploadTimeout="true"
+               acceptCount="100" scheme="https" secure="true"
+               clientAuth="false" sslProtocol="TLS" />
+    -->
+
+    <!-- Define an AJP 1.3 Connector on port 8009 -->
+    <Connector port="8011" 
+               enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />
+
+    <!-- Define a Proxied HTTP/1.1 Connector on port 8082 -->
+    <!-- See proxy documentation for more information about using this. -->
+    <!--
+    <Connector port="8082" 
+               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
+               enableLookups="false" acceptCount="100" connectionTimeout="20000"
+               proxyPort="80" disableUploadTimeout="true" />
+    -->
+
+    <!-- An Engine represents the entry point (within Catalina) that processes
+         every request.  The Engine implementation for Tomcat stand alone
+         analyzes the HTTP headers included with the request, and passes them
+         on to the appropriate Host (virtual host). -->
+
+    <!-- You should set jvmRoute to support load-balancing via AJP ie :
+    <Engine name="Standalone" defaultHost="localhost" jvmRoute="jvm1">         
+    --> 
+         
+    <!-- Define the top level container in our container hierarchy -->
+    <Engine name="Catalina" defaultHost="localhost">
+
+      <!-- The request dumper valve dumps useful debugging information about
+           the request headers and cookies that were received, and the response
+           headers and cookies that were sent, for all requests received by
+           this instance of Tomcat.  If you care only about requests to a
+           particular virtual host, or a particular application, nest this
+           element inside the corresponding <Host> or <Context> entry instead.
+
+           For a similar mechanism that is portable to all Servlet 2.4
+           containers, check out the "RequestDumperFilter" Filter in the
+           example application (the source for this filter may be found in
+           "$CATALINA_HOME/webapps/examples/WEB-INF/classes/filters").
+
+           Note that this Valve uses the platform's default character encoding.
+           This may cause problems for developers in another encoding, e.g.
+           UTF-8.  Use the RequestDumperFilter instead.
+
+           Also note that enabling this Valve will write a ton of stuff to your
+           logs.  They are likely to grow quite large.  This extensive log writing
+           will definitely slow down your server.
+
+           Request dumping is disabled by default.  Uncomment the following
+           element to enable it. -->
+      <!--
+      <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
+      -->
+
+      <!-- Because this Realm is here, an instance will be shared globally -->
+
+      <!-- This Realm uses the UserDatabase configured in the global JNDI
+           resources under the key "UserDatabase".  Any edits
+           that are performed against this UserDatabase are immediately
+           available for use by the Realm.  -->
+      <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
+             resourceName="UserDatabase"/>
+
+      <!-- Comment out the old realm but leave here for now in case we
+           need to go back quickly -->
+      <!--
+      <Realm className="org.apache.catalina.realm.MemoryRealm" />
+      -->
+
+      <!-- Replace the above Realm with one of the following to get a Realm
+           stored in a database and accessed via JDBC -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="org.gjt.mm.mysql.Driver"
+          connectionURL="jdbc:mysql://localhost/authority"
+         connectionName="test" connectionPassword="test"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="oracle.jdbc.driver.OracleDriver"
+          connectionURL="jdbc:oracle:thin:@ntserver:1521:ORCL"
+         connectionName="scott" connectionPassword="tiger"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!--
+      <Realm  className="org.apache.catalina.realm.JDBCRealm"
+             driverName="sun.jdbc.odbc.JdbcOdbcDriver"
+          connectionURL="jdbc:odbc:CATALINA"
+              userTable="users" userNameCol="user_name" userCredCol="user_pass"
+          userRoleTable="user_roles" roleNameCol="role_name" />
+      -->
+
+      <!-- Define the default virtual host
+           Note: XML Schema validation will not work with Xerces 2.2.
+       -->
+      <Host name="localhost" appBase="webapps"
+       unpackWARs="true" autoDeploy="true"
+       xmlValidation="false" xmlNamespaceAware="false">
+
+        <!-- Defines a cluster for this node,
+             By defining this element, means that every manager will be changed.
+             So when running a cluster, only make sure that you have webapps in there
+             that need to be clustered and remove the other ones.
+             A cluster has the following parameters:
+
+             className = the fully qualified name of the cluster class
+
+             clusterName = a descriptive name for your cluster, can be anything
+
+             mcastAddr = the multicast address, has to be the same for all the nodes
+
+             mcastPort = the multicast port, has to be the same for all the nodes
+             
+             mcastBindAddress = bind the multicast socket to a specific address
+             
+             mcastTTL = the multicast TTL if you want to limit your broadcast
+             
+             mcastSoTimeout = the multicast readtimeout 
+
+             mcastFrequency = the number of milliseconds in between sending a "I'm alive" heartbeat
+
+             mcastDropTime = the number a milliseconds before a node is considered "dead" if no heartbeat is received
+
+             tcpThreadCount = the number of threads to handle incoming replication requests, optimal would be the same amount of threads as nodes 
+
+             tcpListenAddress = the listen address (bind address) for TCP cluster request on this host, 
+                                in case of multiple ethernet cards.
+                                auto means that address becomes
+                                InetAddress.getLocalHost().getHostAddress()
+
+             tcpListenPort = the tcp listen port
+
+             tcpSelectorTimeout = the timeout (ms) for the Selector.select() method in case the OS
+                                  has a wakup bug in java.nio. Set to 0 for no timeout
+
+             printToScreen = true means that managers will also print to std.out
+
+             expireSessionsOnShutdown = true means that 
+
+             useDirtyFlag = true means that we only replicate a session after setAttribute,removeAttribute has been called.
+                            false means to replicate the session after each request.
+                            false means that replication would work for the following piece of code: (only for SimpleTcpReplicationManager)
+                            <%
+                            HashMap map = (HashMap)session.getAttribute("map");
+                            map.put("key","value");
+                            %>
+             replicationMode = can be either 'pooled', 'synchronous' or 'asynchronous'.
+                               * Pooled means that the replication happens using several sockets in a synchronous way. Ie, the data gets replicated, then the request return. This is the same as the 'synchronous' setting except it uses a pool of sockets, hence it is multithreaded. This is the fastest and safest configuration. To use this, also increase the nr of tcp threads that you have dealing with replication.
+                               * Synchronous means that the thread that executes the request, is also the
+                               thread the replicates the data to the other nodes, and will not return until all
+                               nodes have received the information.
+                               * Asynchronous means that there is a specific 'sender' thread for each cluster node,
+                               so the request thread will queue the replication request into a "smart" queue,
+                               and then return to the client.
+                               The "smart" queue is a queue where when a session is added to the queue, and the same session
+                               already exists in the queue from a previous request, that session will be replaced
+                               in the queue instead of replicating two requests. This almost never happens, unless there is a 
+                               large network delay.
+        -->             
+        <!--
+            When configuring for clustering, you also add in a valve to catch all the requests
+            coming in, at the end of the request, the session may or may not be replicated.
+            A session is replicated if and only if all the conditions are met:
+            1. useDirtyFlag is true or setAttribute or removeAttribute has been called AND
+            2. a session exists (has been created)
+            3. the request is not trapped by the "filter" attribute
+
+            The filter attribute is to filter out requests that could not modify the session,
+            hence we don't replicate the session after the end of this request.
+            The filter is negative, ie, anything you put in the filter, you mean to filter out,
+            ie, no replication will be done on requests that match one of the filters.
+            The filter attribute is delimited by ;, so you can't escape out ; even if you wanted to.
+
+            filter=".*\.gif;.*\.js;" means that we will not replicate the session after requests with the URI
+            ending with .gif and .js are intercepted.
+            
+            The deployer element can be used to deploy apps cluster wide.
+            Currently the deployment only deploys/undeploys to working members in the cluster
+            so no WARs are copied upons startup of a broken node.
+            The deployer watches a directory (watchDir) for WAR files when watchEnabled="true"
+            When a new war file is added the war gets deployed to the local instance,
+            and then deployed to the other instances in the cluster.
+            When a war file is deleted from the watchDir the war is undeployed locally 
+            and cluster wide
+        -->
+        
+        <!--
+        <Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
+                 managerClassName="org.apache.catalina.cluster.session.DeltaManager"
+                 expireSessionsOnShutdown="false"
+                 useDirtyFlag="true"
+                 notifyListenersOnReplication="true">
+
+            <Membership 
+                className="org.apache.catalina.cluster.mcast.McastService"
+                mcastAddr="228.0.0.4"
+                mcastPort="45564"
+                mcastFrequency="500"
+                mcastDropTime="3000"/>
+
+            <Receiver 
+                className="org.apache.catalina.cluster.tcp.ReplicationListener"
+                tcpListenAddress="auto"
+                tcpListenPort="4001"
+                tcpSelectorTimeout="100"
+                tcpThreadCount="6"/>
+
+            <Sender
+                className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
+                replicationMode="pooled"
+                ackTimeout="15000"
+                waitForAck="true"/>
+
+            <Valve className="org.apache.catalina.cluster.tcp.ReplicationValve"
+                   filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
+                   
+            <Deployer className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
+                      tempDir="/tmp/war-temp/"
+                      deployDir="/tmp/war-deploy/"
+                      watchDir="/tmp/war-listen/"
+                      watchEnabled="false"/>
+                      
+            <ClusterListener className="org.apache.catalina.cluster.session.ClusterSessionListener"/>
+        </Cluster>
+        -->        
+
+
+
+        <!-- Normally, users must authenticate themselves to each web app
+             individually.  Uncomment the following entry if you would like
+             a user to be authenticated the first time they encounter a
+             resource protected by a security constraint, and then have that
+             user identity maintained across *all* web applications contained
+             in this virtual host. -->
+        <!--
+        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
+        -->
+
+        <!-- Access log processes all requests for this virtual host.  By
+             default, log files are created in the "logs" directory relative to
+             $CATALINA_HOME.  If you wish, you can specify a different
+             directory with the "directory" attribute.  Specify either a relative
+             (to $CATALINA_HOME) or absolute path to the desired directory.
+        -->
+        <!--
+        <Valve className="org.apache.catalina.valves.AccessLogValve"
+                 directory="logs"  prefix="localhost_access_log." suffix=".txt"
+                 pattern="common" resolveHosts="false"/>
+        -->
+
+        <!-- Access log processes all requests for this virtual host.  By
+             default, log files are created in the "logs" directory relative to
+             $CATALINA_HOME.  If you wish, you can specify a different
+             directory with the "directory" attribute.  Specify either a relative
+             (to $CATALINA_HOME) or absolute path to the desired directory.
+             This access log implementation is optimized for maximum performance,
+             but is hardcoded to support only the "common" and "combined" patterns.
+        -->
+        <!--
+        <Valve className="org.apache.catalina.valves.FastCommonAccessLogValve"
+                 directory="logs"  prefix="localhost_access_log." suffix=".txt"
+                 pattern="common" resolveHosts="false"/>
+        -->
+
+      </Host>
+
+    </Engine>
+
+  </Service>
+
+</Server>
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