| Hongqing Liu | fd5ee81 | 2014-05-10 16:32:51 +0800 | [diff] [blame^] | 1 | <html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat Configuration Reference (6.0.39) - The AJP Connector</title><meta name="author" content="Remy Maucherat"><meta name="author" content="Yoav Shapira"><meta name="author" content="Andrew R. Jaquith"><style type="text/css" media="print">
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| 4 | </style></head><body bgcolor="#ffffff" text="#000000" link="#525D76" alink="#525D76" vlink="#525D76"><table border="0" width="100%" cellspacing="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img src="../images/tomcat.gif" align="right" alt="
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| 6 | " border="0"></a></td><td><h1><font face="arial,helvetica,sanserif">Apache Tomcat 6.0</font></h1><font face="arial,helvetica,sanserif">Version 6.0.39, Jan 27 2014</font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img src="../images/asf-logo.gif" align="right" alt="Apache Logo" border="0"></a></td></tr></table><table border="0" width="100%" cellspacing="4"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><tr><!--LEFT SIDE NAVIGATION--><td width="20%" valign="top" nowrap="nowrap" class="noPrint"><p><strong>Links</strong></p><ul><li><a href="../index.html">Docs Home</a></li><li><a href="index.html">Config Ref. Home</a></li></ul><p><strong>Top Level Elements</strong></p><ul><li><a href="server.html">Server</a></li><li><a href="service.html">Service</a></li></ul><p><strong>Executors</strong></p><ul><li><a href="executor.html">Executor</a></li></ul><p><strong>Connectors</strong></p><ul><li><a href="http.html">HTTP</a></li><li><a href="ajp.html">AJP</a></li></ul><p><strong>Containers</strong></p><ul><li><a href="context.html">Context</a></li><li><a href="engine.html">Engine</a></li><li><a href="host.html">Host</a></li><li><a href="cluster.html">Cluster</a></li></ul><p><strong>Nested Components</strong></p><ul><li><a href="globalresources.html">Global Resources</a></li><li><a href="listeners.html">Listeners</a></li><li><a href="loader.html">Loader</a></li><li><a href="manager.html">Manager</a></li><li><a href="realm.html">Realm</a></li><li><a href="resources.html">Resources</a></li><li><a href="valve.html">Valve</a></li></ul><p><strong>Cluster Elements</strong></p><ul><li><a href="cluster.html">Cluster</a></li><li><a href="cluster-manager.html">Manager</a></li><li><a href="cluster-channel.html">Channel</a></li><li><a href="cluster-membership.html">Channel/Membership</a></li><li><a href="cluster-sender.html">Channel/Sender</a></li><li><a href="cluster-receiver.html">Channel/Receiver</a></li><li><a href="cluster-interceptor.html">Channel/Interceptor</a></li><li><a href="cluster-valve.html">Valve</a></li><li><a href="cluster-deployer.html">Deployer</a></li><li><a href="cluster-listener.html">ClusterListener</a></li></ul><p><strong>Other</strong></p><ul><li><a href="filter.html">Filter</a></li><li><a href="systemprops.html">System properties</a></li></ul></td><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left" id="mainBody"><h1>Apache Tomcat Configuration Reference</h1><h2>The AJP Connector</h2><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Table of Contents"><!--()--></a><a name="Table_of_Contents"><strong>Table of Contents</strong></a></font></td></tr><tr><td><blockquote>
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| 7 | <ul><li><a href="#Introduction">Introduction</a></li><li><a href="#Attributes">Attributes</a><ol><li><a href="#Common_Attributes">Common Attributes</a></li><li><a href="#Standard_Implementations">Standard Implementations</a></li></ol></li><li><a href="#Nested_Components">Nested Components</a></li></ul>
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| 8 | </blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote>
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| 9 |
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| 10 | <p>The <strong>AJP Connector</strong> element represents a
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| 11 | <strong>Connector</strong> component that communicates with a web
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| 12 | connector via the <code>AJP</code> protocol. This is used for cases
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| 13 | where you wish to invisibly integrate Tomcat 6 into an existing (or new)
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| 14 | Apache installation, and you want Apache to handle the static content
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| 15 | contained in the web application, and/or utilize Apache's SSL
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| 16 | processing.</p>
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| 17 |
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| 18 | <p>This connector supports load balancing when used in conjunction with
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| 19 | the <code>jvmRoute</code> attribute of the
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| 20 | <a href="engine.html">Engine</a>.</p>
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| 21 |
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| 22 | <p>The native connectors supported with this Tomcat release are:
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| 23 | <ul>
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| 24 | <li>JK 1.2.x with any of the supported servers</li>
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| 25 | <li>mod_proxy on Apache httpd 2.x (included by default in Apache HTTP Server 2.2),
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| 26 | with AJP enabled: see
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| 27 | <a href="http://httpd.apache.org/docs/2.2/mod/mod_proxy_ajp.html">the httpd docs</a>
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| 28 | for details.</li>
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| 29 | </ul>
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| 30 | </p>
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| 31 |
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| 32 | <p><b>Other native connectors supporting AJP may work, but are no longer supported.</b></p>
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| 33 |
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| 34 | </blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Attributes"><strong>Attributes</strong></a></font></td></tr><tr><td><blockquote>
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| 35 |
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| 36 | <table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Common Attributes"><!--()--></a><a name="Common_Attributes"><strong>Common Attributes</strong></a></font></td></tr><tr><td><blockquote>
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| 37 |
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| 38 | <p>All implementations of <strong>Connector</strong>
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| 39 | support the following attributes:</p>
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| 40 |
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| 41 | <table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><code>allowTrace</code></td><td align="left" valign="center">
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| 42 | <p>A boolean value which can be used to enable or disable the TRACE
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| 43 | HTTP method. If not specified, this attribute is set to false.</p>
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| 44 | </td></tr><tr><td align="left" valign="center"><code>emptySessionPath</code></td><td align="left" valign="center">
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| 45 | <p>If set to <code>true</code>, all paths for session cookies will be set
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| 46 | to <code>/</code>. This can be useful for portlet specification implementations.
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| 47 | If not specified, this attribute is set to <code>false</code>.</p>
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| 48 | </td></tr><tr><td align="left" valign="center"><code>enableLookups</code></td><td align="left" valign="center">
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| 49 | <p>Set to <code>true</code> if you want calls to
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| 50 | <code>request.getRemoteHost()</code> to perform DNS lookups in
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| 51 | order to return the actual host name of the remote client. Set
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| 52 | to <code>false</code> to skip the DNS lookup and return the IP
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| 53 | address in String form instead (thereby improving performance).
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| 54 | By default, DNS lookups are disabled.</p>
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| 55 | </td></tr><tr><td align="left" valign="center"><code>maxHeaderCount</code></td><td align="left" valign="center">
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| 56 | <p>The maximum number of headers in a request that are allowed by the
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| 57 | container. A request that contains more headers than the specified limit
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| 58 | will be rejected. A value of less than 0 means no limit.
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| 59 | If not specified, a default of 100 is used.</p>
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| 60 | </td></tr><tr><td align="left" valign="center"><code>maxParameterCount</code></td><td align="left" valign="center">
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| 61 | <p>The maximum number of parameters (GET plus POST) which will be
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| 62 | automatically parsed by the container. A value of less than 0 means no
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| 63 | limit. If not specified, a default of 10000 is used. Note that
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| 64 | <code>FailedRequestFilter</code> <a href="filter.html">filter</a> can be
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| 65 | used to reject requests that hit the limit.</p>
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| 66 | </td></tr><tr><td align="left" valign="center"><code>maxPostSize</code></td><td align="left" valign="center">
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| 67 | <p>The maximum size in bytes of the POST which will be handled by
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| 68 | the container FORM URL parameter parsing. The feature can be disabled by
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| 69 | setting this attribute to a value less than or equal to 0.
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| 70 | If not specified, this attribute is set to 2097152 (2 megabytes).</p>
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| 71 | </td></tr><tr><td align="left" valign="center"><code>maxSavePostSize</code></td><td align="left" valign="center">
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| 72 | <p>The maximum size in bytes of the POST which will be saved/buffered by
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| 73 | the container during FORM or CLIENT-CERT authentication. For both types
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| 74 | of authentication, the POST will be saved/buffered before the user is
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| 75 | authenticated. For CLIENT-CERT authentication, the POST is buffered for
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| 76 | the duration of the SSL handshake and the buffer emptied when the request
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| 77 | is processed. For FORM authentication the POST is saved whilst the user
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| 78 | is re-directed to the login form and is retained until the user
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| 79 | successfully authenticates or the session associated with the
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| 80 | authentication request expires. The limit can be disabled by setting this
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| 81 | attribute to -1. Setting the attribute to zero will disable the saving of
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| 82 | POST data during authentication. If not specified, this attribute is set
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| 83 | to 4096 (4 kilobytes).</p>
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| 84 | </td></tr><tr><td align="left" valign="center"><code>parseBodyMethods</code></td><td align="left" valign="center">
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| 85 | <p>A comma-separated list of HTTP methods for which request
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| 86 | bodies will be parsed for request parameters identically
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| 87 | to POST. This is useful in RESTful applications that want to
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| 88 | support POST-style semantics for PUT requests.
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| 89 | Note that any setting other than <code>POST</code> causes Tomcat
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| 90 | to behave in a way that does against the intent of the servlet
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| 91 | specification.
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| 92 | The HTTP method TRACE is specifically forbidden here in accordance
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| 93 | with the HTTP specification.
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| 94 | The default is <code>POST</code></p>
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| 95 | </td></tr><tr><td align="left" valign="center"><strong><code>port</code></strong></td><td align="left" valign="center">
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| 96 | <p>The TCP port number on which this <strong>Connector</strong>
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| 97 | will create a server socket and await incoming connections. Your
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| 98 | operating system will allow only one server application to listen
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| 99 | to a particular port number on a particular IP address.</p>
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| 100 | </td></tr><tr><td align="left" valign="center"><code>protocol</code></td><td align="left" valign="center">
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| 101 | <p>Sets the protocol to handle incoming traffic. The default value is
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| 102 | <code>AJP/1.3</code> and configures
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| 103 | <code>org.apache.jk.server.JkCoyoteHandler</code> the original blocking
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| 104 | Java connector by default.<br>
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| 105 | If the <code>PATH</code> (Windows) or <code>LD_LIBRARY_PATH</code>
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| 106 | (on most unix systems) environment variables contain the Tomcat
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| 107 | native library, the native/APR connector will automatically be
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| 108 | configured instead.<br>
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| 109 | To use an explicit protocol rather than rely on the auto-switching
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| 110 | mechanism described above, the following values may be used:<br>
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| 111 | <code>org.apache.jk.server.JkCoyoteHandler</code>
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| 112 | - original blocking Java connector<br>
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| 113 | <code>org.apache.coyote.ajp.AjpProtocol</code>
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| 114 | - new blocking Java connector that supports an executor<br>
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| 115 | <code>org.apache.coyote.ajp.AjpAprProtocol</code>
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| 116 | - the APR/native connector.<br>
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| 117 | Custom implementations may also be used.</p>
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| 118 | </td></tr><tr><td align="left" valign="center"><code>proxyName</code></td><td align="left" valign="center">
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| 119 | <p>If this <strong>Connector</strong> is being used in a proxy
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| 120 | configuration, configure this attribute to specify the server name
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| 121 | to be returned for calls to <code>request.getServerName()</code>.
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| 122 | See <a href="#Proxy Support">Proxy Support</a> for more
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| 123 | information.</p>
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| 124 | </td></tr><tr><td align="left" valign="center"><code>proxyPort</code></td><td align="left" valign="center">
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| 125 | <p>If this <strong>Connector</strong> is being used in a proxy
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| 126 | configuration, configure this attribute to specify the server port
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| 127 | to be returned for calls to <code>request.getServerPort()</code>.
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| 128 | See <a href="#Proxy Support">Proxy Support</a> for more
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| 129 | information.</p>
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| 130 | </td></tr><tr><td align="left" valign="center"><code>redirectPort</code></td><td align="left" valign="center">
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| 131 | <p>If this <strong>Connector</strong> is supporting non-SSL
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| 132 | requests, and a request is received for which a matching
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| 133 | <code><security-constraint></code> requires SSL transport,
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| 134 | Catalina will automatically redirect the request to the port
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| 135 | number specified here.</p>
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| 136 | </td></tr><tr><td align="left" valign="center"><code>request.registerRequests</code></td><td align="left" valign="center">
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| 137 | <p>This attribute controls request registration for JMX monitoring
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| 138 | of the Connector. It is enabled by default, but may be turned
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| 139 | it off to save a bit of memory.</p>
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| 140 | </td></tr><tr><td align="left" valign="center"><code>scheme</code></td><td align="left" valign="center">
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| 141 | <p>Set this attribute to the name of the protocol you wish to have
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| 142 | returned by calls to <code>request.getScheme()</code>. For
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| 143 | example, you would set this attribute to "<code>https</code>"
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| 144 | for an SSL Connector. The default value is "<code>http</code>".
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| 145 | See <a href="#SSL Support">SSL Support</a> for more information.</p>
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| 146 | </td></tr><tr><td align="left" valign="center"><code>secure</code></td><td align="left" valign="center">
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| 147 | <p>Set this attribute to <code>true</code> if you wish to have
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| 148 | calls to <code>request.isSecure()</code> to return <code>true</code>
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| 149 | for requests received by this Connector (you would want this on an
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| 150 | SSL Connector). The default value is <code>false</code>.</p>
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| 151 | </td></tr><tr><td align="left" valign="center"><code>URIEncoding</code></td><td align="left" valign="center">
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| 152 | <p>This specifies the character encoding used to decode the URI bytes,
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| 153 | after %xx decoding the URL. If not specified, ISO-8859-1 will be used.
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| 154 | </p>
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| 155 | </td></tr><tr><td align="left" valign="center"><code>useBodyEncodingForURI</code></td><td align="left" valign="center">
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| 156 | <p>This specifies if the encoding specified in contentType should be used
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| 157 | for URI query parameters, instead of using the URIEncoding. This
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| 158 | setting is present for compatibility with Tomcat 4.1.x, where the
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| 159 | encoding specified in the contentType, or explicitly set using
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| 160 | Request.setCharacterEncoding method was also used for the parameters from
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| 161 | the URL. The default value is <code>false</code>.
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| 162 | </p>
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| 163 | </td></tr><tr><td align="left" valign="center"><code>useIPVHosts</code></td><td align="left" valign="center">
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| 164 | <p>Set this attribute to <code>true</code> to cause Tomcat to use
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| 165 | the ServerName passed by the native web server to determine the Host
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| 166 | to send the request to. The default value is <code>false</code>.</p>
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| 167 | </td></tr><tr><td align="left" valign="center"><code>xpoweredBy</code></td><td align="left" valign="center">
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| 168 | <p>Set this attribute to <code>true</code> to cause Tomcat to advertise
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| 169 | support for the Servlet specification using the header recommended in the
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| 170 | specification. The default value is <code>false</code>.</p>
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| 171 | </td></tr></table>
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| 172 |
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| 173 | </blockquote></td></tr></table>
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| 174 |
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| 175 | <table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Standard Implementations"><!--()--></a><a name="Standard_Implementations"><strong>Standard Implementations</strong></a></font></td></tr><tr><td><blockquote>
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| 176 |
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| 177 | <p>To use AJP, you
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| 178 | must specify the protocol attribute (see above).</p>
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| 179 |
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| 180 | <p><strong>These implementations support the AJP 1.3 protocol.</strong></p>
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| 181 |
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| 182 | <p>They support the following additional attributes (in addition to the
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| 183 | common attributes listed above):</p>
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| 184 |
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| 185 | <table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><code>address</code></td><td align="left" valign="center">
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| 186 | <p>For servers with more than one IP address, this attribute
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| 187 | specifies which address will be used for listening on the specified
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| 188 | port. By default, this port will be used on all IP addresses
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| 189 | associated with the server. A value of <code>127.0.0.1</code>
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| 190 | indicates that the Connector will only listen on the loopback
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| 191 | interface.</p>
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| 192 | </td></tr><tr><td align="left" valign="center"><code>backlog</code></td><td align="left" valign="center">
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| 193 | <p>The maximum queue length for incoming connection requests when
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| 194 | all possible request processing threads are in use. Any requests
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| 195 | received when the queue is full will be refused. The default
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| 196 | value is 100.</p>
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| 197 | </td></tr><tr><td align="left" valign="center"><code>bufferSize</code></td><td align="left" valign="center">
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| 198 | <p>The size of the output buffer to use. If less than or equal to zero,
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| 199 | then output buffering is disabled. The default value is -1
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| 200 | (i.e. buffering disabled)</p>
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| 201 | </td></tr><tr><td align="left" valign="center"><code>clientCertProvider</code></td><td align="left" valign="center">
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| 202 | <p>When client certificate information is presented in a form other than
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| 203 | instances of <code>java.security.cert.X509Certificate</code> it needs to
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| 204 | be converted before it can be used and this property controls which JSSE
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| 205 | provider is used to perform the conversion. For example it is used with
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| 206 | the AJP connectors, the <a href="http.html">HTTP APR connector</a> and
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| 207 | with the <a href="valve.html#SSL_Authenticator_Valve">
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| 208 | org.apache.catalina.valves.SSLValve</a>.If not specified, the default
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| 209 | provider will be used.</p>
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| 210 | </td></tr><tr><td align="left" valign="center"><code>connectionTimeout</code></td><td align="left" valign="center">
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| 211 | <p>The number of milliseconds this <strong>Connector</strong> will wait,
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| 212 | after accepting a connection, for the request URI line to be
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| 213 | presented. The default value is infinite (i.e. no timeout).</p>
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| 214 | </td></tr><tr><td align="left" valign="center"><code>deferAccept</code></td><td align="left" valign="center">
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| 215 | <p>Sets the <code>TCP_DEFER_ACCEPT</code> flag on the listening socket for
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| 216 | this connector. The default value is <code>true</code> where
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| 217 | <code>TCP_DEFER_ACCEPT</code> is supported by the operating system,
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| 218 | otherwise it is <code>false</code>.</p>
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| 219 | </td></tr><tr><td align="left" valign="center"><code>executor</code></td><td align="left" valign="center">
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| 220 | <p>A reference to the name in an <a href="executor.html">Executor</a> element.
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| 221 | If this attribute is enabled, and the named executor exists, the connector will
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| 222 | use the executor, and all the other thread attributes will be ignored.
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| 223 | This attribute is not supported by the original blocking Java
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| 224 | connector.</p>
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| 225 | </td></tr><tr><td align="left" valign="center"><code>keepAliveTimeout</code></td><td align="left" valign="center">
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| 226 | <p>The number of milliseconds this <strong>Connector</strong> will wait for
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| 227 | another AJP request before closing the connection.
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| 228 | The default value is to use the value that has been set for the
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| 229 | connectionTimeout attribute.</p>
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| 230 | </td></tr><tr><td align="left" valign="center"><code>maxThreads</code></td><td align="left" valign="center">
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| 231 | <p>The maximum number of request processing threads to be created
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| 232 | by this <strong>Connector</strong>, which therefore determines the
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| 233 | maximum number of simultaneous requests that can be handled. If
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| 234 | not specified, this attribute is set to 200. If an executor is associated
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| 235 | with this connector, this attribute is ignored as the connector will
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| 236 | execute tasks using the executor rather than an internal thread pool.</p>
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| 237 | </td></tr><tr><td align="left" valign="center"><code>packetSize</code></td><td align="left" valign="center">
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| 238 | <p>This attribute sets the maximum AJP packet size in Bytes. The maximum
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| 239 | value is 65536. It should be the same as the <code>max_packet_size</code>
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| 240 | directive configured for mod_jk. Normally it is not necessary to change
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| 241 | the maximum packet size. Problems with the default value have been
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| 242 | reported when sending certificates or certificate chains. The default
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| 243 | value is 8192.</p>
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| 244 | </td></tr><tr><td align="left" valign="center"><strong><code>port</code></strong></td><td align="left" valign="center">
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| 245 | <p>The TCP port number on which this <strong>Connector</strong>
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| 246 | will create a server socket and await incoming connections. Your
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| 247 | operating system will allow only one server application to listen
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| 248 | to a particular port number on a particular IP address.</p>
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| 249 | </td></tr><tr><td align="left" valign="center"><code>request.secret</code></td><td align="left" valign="center">
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| 250 | <p>Only requests from workers with this secret keyword will be accepted.
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| 251 | </p>
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| 252 | </td></tr><tr><td align="left" valign="center"><code>request.shutdownEnabled</code></td><td align="left" valign="center">
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| 253 | <p>If true and a secret has been configured, a correctly formatted AJP
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| 254 | request (that includes the secret) will shutdown the Tomcat instance
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| 255 | associated with this connector. This is set to <code>false</code> by
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| 256 | default.</p>
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| 257 | </td></tr><tr><td align="left" valign="center"><code>request.useSecret</code></td><td align="left" valign="center">
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| 258 | <p>If set to <code>true</code>, then a random value for
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| 259 | <code>request.secret</code> will be generated. It is for use with
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| 260 | <code>request.shutdownEnabled</code>. This is set to <code>false</code>
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| 261 | by default.</p>
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| 262 | </td></tr><tr><td align="left" valign="center"><code>tcpNoDelay</code></td><td align="left" valign="center">
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| 263 | <p>If set to <code>true</code>, the TCP_NO_DELAY option will be
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| 264 | set on the server socket, which improves performance under most
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| 265 | circumstances. This is set to <code>true</code> by default.</p>
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| 266 | </td></tr><tr><td align="left" valign="center"><code>tomcatAuthentication</code></td><td align="left" valign="center">
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| 267 | <p>If set to <code>true</code>, the authentication will be done in Tomcat.
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| 268 | Otherwise, the authenticated principal will be propagated from the native
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| 269 | webserver and used for authorization in Tomcat.
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| 270 | The default value is <code>true</code>.</p>
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| 271 | </td></tr></table>
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| 272 |
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| 273 | </blockquote></td></tr></table>
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| 274 |
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| 275 | </blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Nested Components"><!--()--></a><a name="Nested_Components"><strong>Nested Components</strong></a></font></td></tr><tr><td><blockquote>
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| 276 |
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| 277 | <p>None at this time.</p>
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| 278 |
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| 279 | </blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font color="#525D76" size="-1"><em>
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| 280 | Copyright © 1999-2014, Apache Software Foundation
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| 281 | </em></font></div></td></tr></table></body></html> |