| 1 | <html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat Configuration Reference - The AJP Connector</title><meta value="Remy Maucherat" name="author"><meta value="remm@apache.org" name="email"><meta value="Yoav Shapira" name="author"><meta value="yoavs@apache.org" name="email"><meta value="Andrew R. Jaquith" name="author"><meta value="arjaquith@mindspring.com" name="email"></head><body vlink="#525D76" alink="#525D76" link="#525D76" text="#000000" bgcolor="#ffffff"><table cellspacing="0" width="100%" border="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img border="0" alt=" |
|---|
| 2 | The Apache Tomcat Servlet/JSP Container |
|---|
| 3 | " align="right" src="../images/tomcat.gif"></a></td><td><font face="arial,helvetica,sanserif"><h1>Apache Tomcat 6.0</h1></font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img border="0" alt="Apache Logo" align="right" src="../images/asf-logo.gif"></a></td></tr></table><table cellspacing="4" width="100%" border="0"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr size="1" noshade></td></tr><tr><!--LEFT SIDE NAVIGATION--><td nowrap="true" valign="top" width="20%"><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="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>Global Settings</strong></p><ul><li><a href="systemprops.html">System properties</a></li></ul></td><!--RIGHT SIDE MAIN BODY--><td align="left" valign="top" width="80%"><table cellspacing="4" width="100%" border="0"><tr><td valign="top" align="left"><h1>Apache Tomcat Configuration Reference</h1><h2>The AJP Connector</h2></td><td nowrap="true" valign="top" align="right"><small><a href="printer/ajp.html"><img alt="Printer Friendly Version" border="0" src="../images/printer.gif"><br>print-friendly<br>version |
|---|
| 4 | </a></small></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 5 | |
|---|
| 6 | <p>The <strong>AJP Connector</strong> element represents a |
|---|
| 7 | <strong>Connector</strong> component that communicates with a web |
|---|
| 8 | connector via the <code>AJP</code> protocol. This is used for cases |
|---|
| 9 | where you wish to invisibly integrate Tomcat 6 into an existing (or new) |
|---|
| 10 | Apache installation, and you want Apache to handle the static content |
|---|
| 11 | contained in the web application, and/or utilize Apache's SSL |
|---|
| 12 | processing.</p> |
|---|
| 13 | |
|---|
| 14 | <p>This connector supports load balancing when used in conjunction with |
|---|
| 15 | the <code>jvmRoute</code> attribute of the |
|---|
| 16 | <a href="engine.html">Engine</a>.</p> |
|---|
| 17 | |
|---|
| 18 | <p>The native connectors supported with this Tomcat release are: |
|---|
| 19 | <ul> |
|---|
| 20 | <li>JK 1.2.x with any of the supported servers</li> |
|---|
| 21 | <li>mod_proxy on Apache httpd 2.x (included by default in Apache HTTP Server 2.2), |
|---|
| 22 | with AJP enabled: see |
|---|
| 23 | <a href="http://httpd.apache.org/docs/2.2/mod/mod_proxy_ajp.html">the httpd docs</a> |
|---|
| 24 | for details.</li> |
|---|
| 25 | </ul> |
|---|
| 26 | </p> |
|---|
| 27 | |
|---|
| 28 | <p><b>Other native connectors supporting AJP may work, but are no longer supported.</b></p> |
|---|
| 29 | |
|---|
| 30 | </blockquote></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Attributes"><strong>Attributes</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 31 | |
|---|
| 32 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Common Attributes"><strong>Common Attributes</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 33 | |
|---|
| 34 | <p>All implementations of <strong>Connector</strong> |
|---|
| 35 | support the following attributes:</p> |
|---|
| 36 | |
|---|
| 37 | <table cellpadding="5" border="1"><tr><th bgcolor="#023264" width="15%"><font color="#ffffff">Attribute</font></th><th bgcolor="#023264" width="85%"><font color="#ffffff">Description</font></th></tr><tr><td valign="center" align="left"><code>allowTrace</code></td><td valign="center" align="left"> |
|---|
| 38 | <p>A boolean value which can be used to enable or disable the TRACE |
|---|
| 39 | HTTP method. If not specified, this attribute is set to false.</p> |
|---|
| 40 | </td></tr><tr><td valign="center" align="left"><code>emptySessionPath</code></td><td valign="center" align="left"> |
|---|
| 41 | <p>If set to <code>true</code>, all paths for session cookies will be set |
|---|
| 42 | to <code>/</code>. This can be useful for portlet specification implementations. |
|---|
| 43 | If not specified, this attribute is set to <code>false</code>.</p> |
|---|
| 44 | </td></tr><tr><td valign="center" align="left"><code>enableLookups</code></td><td valign="center" align="left"> |
|---|
| 45 | <p>Set to <code>true</code> if you want calls to |
|---|
| 46 | <code>request.getRemoteHost()</code> to perform DNS lookups in |
|---|
| 47 | order to return the actual host name of the remote client. Set |
|---|
| 48 | to <code>false</code> to skip the DNS lookup and return the IP |
|---|
| 49 | address in String form instead (thereby improving performance). |
|---|
| 50 | By default, DNS lookups are enabled.</p> |
|---|
| 51 | </td></tr><tr><td valign="center" align="left"><code>maxPostSize</code></td><td valign="center" align="left"> |
|---|
| 52 | <p>The maximum size in bytes of the POST which will be handled by |
|---|
| 53 | the container FORM URL parameter parsing. The feature can be disabled by |
|---|
| 54 | setting this attribute to a value less than or equal to 0. |
|---|
| 55 | If not specified, this attribute is set to 2097152 (2 megabytes).</p> |
|---|
| 56 | </td></tr><tr><td valign="center" align="left"><code>maxSavePostSize</code></td><td valign="center" align="left"> |
|---|
| 57 | <p>The maximum size in bytes of the POST which will be saved/buffered by |
|---|
| 58 | the container during FORM or CLIENT-CERT authentication. For both types |
|---|
| 59 | of authentication, the POST will be saved/buffered before the user is |
|---|
| 60 | authenticated. For CLIENT-CERT authentication, the POST is buffered for |
|---|
| 61 | the duration of the SSL handshake and the buffer emptied when the request |
|---|
| 62 | is processed. For FORM authentication the POST is saved whilst the user |
|---|
| 63 | is re-directed to the login form and is retained until the user |
|---|
| 64 | successfully authenticates or the session associated with the |
|---|
| 65 | authentication request expires. The limit can be disabled by setting this |
|---|
| 66 | attribute to -1. Setting the attribute to zero will disable the saving of |
|---|
| 67 | POST data during authentication. If not specified, this attribute is set |
|---|
| 68 | to 4096 (4 kilobytes).</p> |
|---|
| 69 | </td></tr><tr><td valign="center" align="left"><code>protocol</code></td><td valign="center" align="left"> |
|---|
| 70 | <p>This attribute value must be <code>AJP/1.3</code> to use the AJP |
|---|
| 71 | handler.</p> |
|---|
| 72 | </td></tr><tr><td valign="center" align="left"><code>proxyName</code></td><td valign="center" align="left"> |
|---|
| 73 | <p>If this <strong>Connector</strong> is being used in a proxy |
|---|
| 74 | configuration, configure this attribute to specify the server name |
|---|
| 75 | to be returned for calls to <code>request.getServerName()</code>. |
|---|
| 76 | See <a href="#Proxy Support">Proxy Support</a> for more |
|---|
| 77 | information.</p> |
|---|
| 78 | </td></tr><tr><td valign="center" align="left"><code>proxyPort</code></td><td valign="center" align="left"> |
|---|
| 79 | <p>If this <strong>Connector</strong> is being used in a proxy |
|---|
| 80 | configuration, configure this attribute to specify the server port |
|---|
| 81 | to be returned for calls to <code>request.getServerPort()</code>. |
|---|
| 82 | See <a href="#Proxy Support">Proxy Support</a> for more |
|---|
| 83 | information.</p> |
|---|
| 84 | </td></tr><tr><td valign="center" align="left"><code>redirectPort</code></td><td valign="center" align="left"> |
|---|
| 85 | <p>If this <strong>Connector</strong> is supporting non-SSL |
|---|
| 86 | requests, and a request is received for which a matching |
|---|
| 87 | <code><security-constraint></code> requires SSL transport, |
|---|
| 88 | Catalina will automatically redirect the request to the port |
|---|
| 89 | number specified here.</p> |
|---|
| 90 | </td></tr><tr><td valign="center" align="left"><code>request.registerRequests</code></td><td valign="center" align="left"> |
|---|
| 91 | <p>This attribute controls request registration for JMX monitoring |
|---|
| 92 | of the Connector. It is enabled by default, but may be turned |
|---|
| 93 | it off to save a bit of memory.</p> |
|---|
| 94 | </td></tr><tr><td valign="center" align="left"><code>scheme</code></td><td valign="center" align="left"> |
|---|
| 95 | <p>Set this attribute to the name of the protocol you wish to have |
|---|
| 96 | returned by calls to <code>request.getScheme()</code>. For |
|---|
| 97 | example, you would set this attribute to "<code>https</code>" |
|---|
| 98 | for an SSL Connector. The default value is "<code>http</code>". |
|---|
| 99 | See <a href="#SSL Support">SSL Support</a> for more information.</p> |
|---|
| 100 | </td></tr><tr><td valign="center" align="left"><code>secure</code></td><td valign="center" align="left"> |
|---|
| 101 | <p>Set this attribute to <code>true</code> if you wish to have |
|---|
| 102 | calls to <code>request.isSecure()</code> to return <code>true</code> |
|---|
| 103 | for requests received by this Connector (you would want this on an |
|---|
| 104 | SSL Connector). The default value is <code>false</code>.</p> |
|---|
| 105 | </td></tr><tr><td valign="center" align="left"><code>URIEncoding</code></td><td valign="center" align="left"> |
|---|
| 106 | <p>This specifies the character encoding used to decode the URI bytes, |
|---|
| 107 | after %xx decoding the URL. If not specified, ISO-8859-1 will be used. |
|---|
| 108 | </p> |
|---|
| 109 | </td></tr><tr><td valign="center" align="left"><code>useBodyEncodingForURI</code></td><td valign="center" align="left"> |
|---|
| 110 | <p>This specifies if the encoding specified in contentType should be used |
|---|
| 111 | for URI query parameters, instead of using the URIEncoding. This |
|---|
| 112 | setting is present for compatibility with Tomcat 4.1.x, where the |
|---|
| 113 | encoding specified in the contentType, or explicitely set using |
|---|
| 114 | Request.setCharacterEncoding method was also used for the parameters from |
|---|
| 115 | the URL. The default value is <code>false</code>. |
|---|
| 116 | </p> |
|---|
| 117 | </td></tr><tr><td valign="center" align="left"><code>useIPVHosts</code></td><td valign="center" align="left"> |
|---|
| 118 | <p>Set this attribute to <code>true</code> to cause Tomcat to use |
|---|
| 119 | the ServerName passed by the native web server to determine the Host |
|---|
| 120 | to send the request to. The default value is <code>false</code>.</p> |
|---|
| 121 | </td></tr><tr><td valign="center" align="left"><code>xpoweredBy</code></td><td valign="center" align="left"> |
|---|
| 122 | <p>Set this attribute to <code>true</code> to cause Tomcat to advertise |
|---|
| 123 | support for the Srevlet specification using the header recommended in the |
|---|
| 124 | specification. The default value is <code>false</code>.</p> |
|---|
| 125 | </td></tr></table> |
|---|
| 126 | |
|---|
| 127 | </blockquote></td></tr></table> |
|---|
| 128 | |
|---|
| 129 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Standard Implementation"><strong>Standard Implementation</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 130 | |
|---|
| 131 | <p>To use AJP, you |
|---|
| 132 | must specify the protocol attribute (see above).</p> |
|---|
| 133 | |
|---|
| 134 | <p><strong>This implementation supports the AJP 1.3 protocol.</strong></p> |
|---|
| 135 | |
|---|
| 136 | <p>It supports the following additional attributes (in addition to the |
|---|
| 137 | common attributes listed above):</p> |
|---|
| 138 | |
|---|
| 139 | <table cellpadding="5" border="1"><tr><th bgcolor="#023264" width="15%"><font color="#ffffff">Attribute</font></th><th bgcolor="#023264" width="85%"><font color="#ffffff">Description</font></th></tr><tr><td valign="center" align="left"><code>address</code></td><td valign="center" align="left"> |
|---|
| 140 | <p>For servers with more than one IP address, this attribute |
|---|
| 141 | specifies which address will be used for listening on the specified |
|---|
| 142 | port. By default, this port will be used on all IP addresses |
|---|
| 143 | associated with the server. A value of <code>127.0.0.1</code> |
|---|
| 144 | indicates that the Connector will only listen on the loopback |
|---|
| 145 | interface.</p> |
|---|
| 146 | </td></tr><tr><td valign="center" align="left"><code>backlog</code></td><td valign="center" align="left"> |
|---|
| 147 | <p>The maximum queue length for incoming connection requests when |
|---|
| 148 | all possible request processing threads are in use. Any requests |
|---|
| 149 | received when the queue is full will be refused. The default |
|---|
| 150 | value is 10.</p> |
|---|
| 151 | </td></tr><tr><td valign="center" align="left"><code>bufferSize</code></td><td valign="center" align="left"> |
|---|
| 152 | <p>The size of the output buffer to use. If less than or equal to zero, |
|---|
| 153 | then output buffering is disabled. The default value is -1 |
|---|
| 154 | (i.e. buffering disabled)</p> |
|---|
| 155 | </td></tr><tr><td valign="center" align="left"><code>connectionTimeout</code></td><td valign="center" align="left"> |
|---|
| 156 | <p>The number of milliseconds this <strong>Connector</strong> will wait, |
|---|
| 157 | after accepting a connection, for the request URI line to be |
|---|
| 158 | presented. The default value is infinite (i.e. no timeout).</p> |
|---|
| 159 | </td></tr><tr><td valign="center" align="left"><code>executor</code></td><td valign="center" align="left"> |
|---|
| 160 | <p>A reference to the name in an <a href="executor.html">Executor</a> element. |
|---|
| 161 | If this attribute is enabled, and the named executor exists, the connector will |
|---|
| 162 | use the executor, and all the other thread attributes will be ignored.</p> |
|---|
| 163 | </td></tr><tr><td valign="center" align="left"><code>keepAliveTimeout</code></td><td valign="center" align="left"> |
|---|
| 164 | <p>The number of milliseconds this <strong>Connector</strong> will wait for |
|---|
| 165 | another AJP request before closing the connection. |
|---|
| 166 | The default value is to use the value that has been set for the |
|---|
| 167 | connectionTimeout attribute.</p> |
|---|
| 168 | </td></tr><tr><td valign="center" align="left"><code>maxThreads</code></td><td valign="center" align="left"> |
|---|
| 169 | <p>The maximum number of request processing threads to be created |
|---|
| 170 | by this <strong>Connector</strong>, which therefore determines the |
|---|
| 171 | maximum number of simultaneous requests that can be handled. If |
|---|
| 172 | not specified, this attribute is set to 200. If an executor is associated |
|---|
| 173 | with this connector, this attribute is ignored as the connector will |
|---|
| 174 | execute tasks using the executor rather than an internal thread pool.</p> |
|---|
| 175 | </td></tr><tr><td valign="center" align="left"><code>packetSize</code></td><td valign="center" align="left"> |
|---|
| 176 | <p>This attribute sets the maximum AJP packet size in Bytes. The maximum |
|---|
| 177 | value is 65536. It should be the same as the <code>max_packet_size</code> |
|---|
| 178 | directive configured for mod_jk. Normally it is not necessary to change |
|---|
| 179 | the maximum packet size. Problems with the default value have been |
|---|
| 180 | reported when sending certificates or certificate chains. The default |
|---|
| 181 | value is 8192.</p> |
|---|
| 182 | </td></tr><tr><td valign="center" align="left"><strong><code>port</code></strong></td><td valign="center" align="left"> |
|---|
| 183 | <p>The TCP port number on which this <strong>Connector</strong> |
|---|
| 184 | will create a server socket and await incoming connections. Your |
|---|
| 185 | operating system will allow only one server application to listen |
|---|
| 186 | to a particular port number on a particular IP address.</p> |
|---|
| 187 | </td></tr><tr><td valign="center" align="left"><code>request.secret</code></td><td valign="center" align="left"> |
|---|
| 188 | <p>Only requests from workers with this secret keyword will be accepted. |
|---|
| 189 | </p> |
|---|
| 190 | </td></tr><tr><td valign="center" align="left"><code>request.shutdownEnabled</code></td><td valign="center" align="left"> |
|---|
| 191 | <p>If true and a secret has been configured, a correctly fomatted AJP |
|---|
| 192 | request (that includes the secret) will shutdown the Tomcat instance |
|---|
| 193 | associated with this connector. This is set to <code>false</code> by |
|---|
| 194 | default.</p> |
|---|
| 195 | </td></tr><tr><td valign="center" align="left"><code>request.useSecret</code></td><td valign="center" align="left"> |
|---|
| 196 | <p>If set to <code>true</code>, then a random value for |
|---|
| 197 | <code>request.secret</code> will be generated. It is for use with |
|---|
| 198 | <code>request.shutdownEnabled</code>. This is set to <code>false</code> |
|---|
| 199 | by default.</p> |
|---|
| 200 | </td></tr><tr><td valign="center" align="left"><code>tcpNoDelay</code></td><td valign="center" align="left"> |
|---|
| 201 | <p>If set to <code>true</code>, the TCP_NO_DELAY option will be |
|---|
| 202 | set on the server socket, which improves performance under most |
|---|
| 203 | circumstances. This is set to <code>true</code> by default.</p> |
|---|
| 204 | </td></tr><tr><td valign="center" align="left"><code>tomcatAuthentication</code></td><td valign="center" align="left"> |
|---|
| 205 | <p>If set to <code>true</code>, the authetication will be done in Tomcat. |
|---|
| 206 | Otherwise, the authenticated principal will be propagated from the native |
|---|
| 207 | webaserver and used for authorization in Tomcat. |
|---|
| 208 | The default value is <code>true</code>.</p> |
|---|
| 209 | </td></tr></table> |
|---|
| 210 | |
|---|
| 211 | </blockquote></td></tr></table> |
|---|
| 212 | |
|---|
| 213 | </blockquote></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Nested Components"><strong>Nested Components</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 214 | |
|---|
| 215 | <p>None at this time.</p> |
|---|
| 216 | |
|---|
| 217 | </blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr size="1" noshade></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font size="-1" color="#525D76"><em> |
|---|
| 218 | Copyright © 1999-2008, Apache Software Foundation |
|---|
| 219 | </em></font></div></td></tr></table></body></html> |
|---|
