You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@tomcat.apache.org by rj...@apache.org on 2012/12/05 21:21:01 UTC
svn commit: r1417624 [32/38] - in /tomcat/site/trunk/docs/tomcat-8.0-doc: ./
api/ appdev/ appdev/sample/ appdev/sample/docs/ appdev/sample/src/
appdev/sample/src/mypackage/ appdev/sample/web/ appdev/sample/web/WEB-INF/
appdev/sample/web/images/ archite...
Added: tomcat/site/trunk/docs/tomcat-8.0-doc/proxy-howto.html
URL: http://svn.apache.org/viewvc/tomcat/site/trunk/docs/tomcat-8.0-doc/proxy-howto.html?rev=1417624&view=auto
==============================================================================
--- tomcat/site/trunk/docs/tomcat-8.0-doc/proxy-howto.html (added)
+++ tomcat/site/trunk/docs/tomcat-8.0-doc/proxy-howto.html Wed Dec 5 20:20:35 2012
@@ -0,0 +1,159 @@
+<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat 8 (8.0.0-dev) - Proxy Support HOW-TO</title><meta name="author" content="Craig R. McClanahan"><style type="text/css" media="print">
+ .noPrint {display: none;}
+ td#mainBody {width: 100%;}
+ </style><style type="text/css">
+ code {background-color:rgb(224,255,255);padding:0 0.1em;}
+ code.attributeName, code.propertyName {background-color:transparent;}
+ </style><style type="text/css">
+ .wrapped-source code { display: block; background-color: transparent; }
+ .wrapped-source div { margin: 0 0 0 1.25em; }
+ .wrapped-source p { margin: 0 0 0 1.25em; text-indent: -1.25em; }
+ </style><style type="text/css">
+ p.notice {
+ border: 1px solid rgb(255, 0, 0);
+ background-color: rgb(238, 238, 238);
+ color: rgb(0, 51, 102);
+ padding: 0.5em;
+ margin: 1em 2em 1em 1em;
+ }
+ </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="
+ The Apache Tomcat Servlet/JSP Container
+ " border="0"></a></td><td><h1><font face="arial,helvetica,sanserif">Apache Tomcat 8</font></h1><font face="arial,helvetica,sanserif">Version 8.0.0-dev, Dec 5 2012</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 size="1"></td></tr><tr><!--LEFT SIDE NAVIGATION--><td width="20%" valign="top" nowrap class="noPrint"><p><strong>Links</strong></p><ul><li><a href="index.html">Docs Home</a></li><li><a href="http://wiki.apache.org/tomcat/FAQ">FAQ</a></li><li><a href="#comments_section">User Comments</a></li></ul><p><strong>User Guide</strong></p><ul><li><a href="introduction.html">1) Introduction</a></li><li><a href="setup.html">2) Setup</a></li><li><a href="appdev/index.html">3) First webapp</a></li><li><a href="deployer-howto.html">4) Deployer</a></li><li><a href="
manager-howto.html">5) Manager</a></li><li><a href="realm-howto.html">6) Realms and AAA</a></li><li><a href="security-manager-howto.html">7) Security Manager</a></li><li><a href="jndi-resources-howto.html">8) JNDI Resources</a></li><li><a href="jndi-datasource-examples-howto.html">9) JDBC DataSources</a></li><li><a href="class-loader-howto.html">10) Classloading</a></li><li><a href="jasper-howto.html">11) JSPs</a></li><li><a href="ssl-howto.html">12) SSL</a></li><li><a href="ssi-howto.html">13) SSI</a></li><li><a href="cgi-howto.html">14) CGI</a></li><li><a href="proxy-howto.html">15) Proxy Support</a></li><li><a href="mbeans-descriptor-howto.html">16) MBean Descriptor</a></li><li><a href="default-servlet.html">17) Default Servlet</a></li><li><a href="cluster-howto.html">18) Clustering</a></li><li><a href="balancer-howto.html">19) Load Balancer</a></li><li><a href="connectors.html">20) Connectors</a></li><li><a href="monitoring.html">21) Monitoring and Management</a></li><li
><a href="logging.html">22) Logging</a></li><li><a href="apr.html">23) APR/Native</a></li><li><a href="virtual-hosting-howto.html">24) Virtual Hosting</a></li><li><a href="aio.html">25) Advanced IO</a></li><li><a href="extras.html">26) Additional Components</a></li><li><a href="maven-jars.html">27) Mavenized</a></li><li><a href="security-howto.html">28) Security Considerations</a></li><li><a href="windows-service-howto.html">29) Windows Service</a></li><li><a href="windows-auth-howto.html">30) Windows Authentication</a></li><li><a href="jdbc-pool.html">31) Tomcat's JDBC Pool</a></li><li><a href="web-socket-howto.html">32) WebSocket</a></li></ul><p><strong>Reference</strong></p><ul><li><a href="RELEASE-NOTES.txt">Release Notes</a></li><li><a href="config/index.html">Configuration</a></li><li><a href="api/index.html">Tomcat Javadocs</a></li><li><a href="servletapi/index.html">Servlet Javadocs</a></li><li><a href="jspapi/index.html">JSP 2.2 Javadocs</a></li><li><a href="elapi/i
ndex.html">EL 2.2 Javadocs</a></li><li><a href="http://tomcat.apache.org/connectors-doc/">JK 1.2 Documentation</a></li></ul><p><strong>Apache Tomcat Development</strong></p><ul><li><a href="building.html">Building</a></li><li><a href="changelog.html">Changelog</a></li><li><a href="http://wiki.apache.org/tomcat/TomcatVersions">Status</a></li><li><a href="developers.html">Developers</a></li><li><a href="architecture/index.html">Architecture</a></li><li><a href="funcspecs/index.html">Functional Specs.</a></li><li><a href="tribes/index.html">Tribes</a></li></ul></td><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left" id="mainBody"><h1>Proxy Support HOW-TO</h1><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>
+<ul><li><a href="#Introduction">Introduction</a></li><li><a href="#Apache_1.3_Proxy_Support">Apache 1.3 Proxy Support</a></li><li><a href="#Apache_2.0_Proxy_Support">Apache 2.0 Proxy Support</a></li></ul>
+</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>
+
+<p>Using standard configurations of Tomcat, web applications can ask for
+the server name and port number to which the request was directed for
+processing. When Tomcat is running standalone with the
+<a href="config/coyote.html">Coyote HTTP/1.1 Connector</a>, it will generally
+report the server name specified in the request, and the port number on
+which the <strong>Connector</strong> is listening. The servlet API
+calls of interest, for this purpose, are:</p>
+<ul>
+<li><code>ServletRequest.getServerName()</code>: Returns the host name of the server to which the request was sent.</li>
+<li><code>ServletRequest.getServerPort()</code>: Returns the host name of the server to which the request was sent.</li>
+<li><code>ServletRequest.getLocalName()</code>: Returns the host name of the Internet Protocol (IP) interface on which the request was received.</li>
+<li><code>ServletRequest.getLocalPort()</code>: Returns the Internet Protocol (IP) port number of the interface on which the request was received.</li>
+</ul>
+
+<p>When you are running behind a proxy server (or a web server that is
+configured to behave like a proxy server), you will sometimes prefer to
+manage the values returned by these calls. In particular, you will
+generally want the port number to reflect that specified in the original
+request, not the one on which the <strong>Connector</strong> itself is
+listening. You can use the <code>proxyName</code> and <code>proxyPort</code>
+attributes on the <code><Connector></code> element to configure
+these values.</p>
+
+<p>Proxy support can take many forms. The following sections describe
+proxy configurations for several common cases.</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Apache 1.3 Proxy Support"><!--()--></a><a name="Apache_1.3_Proxy_Support"><strong>Apache 1.3 Proxy Support</strong></a></font></td></tr><tr><td><blockquote>
+
+<p>Apache 1.3 supports an optional module (<code>mod_proxy</code>) that
+configures the web server to act as a proxy server. This can be used to
+forward requests for a particular web application to a Tomcat instance,
+without having to configure a web connector such as <code>mod_jk</code>.
+To accomplish this, you need to perform the following tasks:</p>
+<ol>
+<li>Configure your copy of Apache so that it includes the
+ <code>mod_proxy</code> module. If you are building from source,
+ the easiest way to do this is to include the
+ <code>--enable-module=proxy</code> directive on the
+ <code>./configure</code> command line.</li>
+<li>If not already added for you, make sure that you are loading the
+ <code>mod_proxy</code> module at Apache startup time, by using the
+ following directives in your <code>httpd.conf</code> file:
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+LoadModule proxy_module {path-to-modules}/mod_proxy.so
+AddModule mod_proxy.c
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div></li>
+<li>Include two directives in your <code>httpd.conf</code> file for
+ each web application that you wish to forward to Tomcat. For
+ example, to forward an application at context path <code>/myapp</code>:
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ProxyPass /myapp http://localhost:8081/myapp
+ProxyPassReverse /myapp http://localhost:8081/myapp
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+ which tells Apache to forward URLs of the form
+ <code>http://localhost/myapp/*</code> to the Tomcat connector
+ listening on port 8081.</li>
+<li>Configure your copy of Tomcat to include a special
+ <code><Connector></code> element, with appropriate
+ proxy settings, for example:
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+<Connector port="8081" ...
+ proxyName="www.mycompany.com"
+ proxyPort="80"/>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+ which will cause servlets inside this web application to think that
+ all proxied requests were directed to <code>www.mycompany.com</code>
+ on port 80.</li>
+<li>It is legal to omit the <code>proxyName</code> attribute from the
+ <code><Connector></code> element. If you do so, the value
+ returned by <code>request.getServerName()</code> will by the host
+ name on which Tomcat is running. In the example above, it would be
+ <code>localhost</code>.</li>
+<li>If you also have a <code><Connector></code> listening on port
+ 8080 (nested within the same <a href="config/service.html">Service</a>
+ element), the requests to either port will share the same set of
+ virtual hosts and web applications.</li>
+<li>You might wish to use the IP filtering features of your operating
+ system to restrict connections to port 8081 (in this example) to
+ be allowed <strong>only</strong> from the server that is running
+ Apache.</li>
+<li>Alternatively, you can set up a series of web applications that are
+ only available via proxying, as follows:
+ <ul>
+ <li>Configure another <code><Service></code> that contains
+ only a <code><Connector></code> for the proxy port.</li>
+ <li>Configure appropriate <a href="config/engine.html">Engine</a>,
+ <a href="config/host.html">Host</a>, and
+ <a href="config/context.html">Context</a> elements for the virtual hosts
+ and web applications accessible via proxying.</li>
+ <li>Optionally, protect port 8081 with IP filters as described
+ earlier.</li>
+ </ul></li>
+<li>When requests are proxied by Apache, the web server will be recording
+ these requests in its access log. Therefore, you will generally want to
+ disable any access logging performed by Tomcat itself.</li>
+</ol>
+
+<p>When requests are proxied in this manner, <strong>all</strong> requests
+for the configured web applications will be processed by Tomcat (including
+requests for static content). You can improve performance by using the
+<code>mod_jk</code> web connector instead of <code>mod_proxy</code>.
+<code>mod_jk</code> can be configured so that the web server serves static
+content that is not processed by filters or security constraints defined
+within the web application's deployment descriptor
+(<code>/WEB-INF/web.xml</code>).</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Apache 2.0 Proxy Support"><!--()--></a><a name="Apache_2.0_Proxy_Support"><strong>Apache 2.0 Proxy Support</strong></a></font></td></tr><tr><td><blockquote>
+The same instructions hold true as for 1.3. (Except in Apache 2.0,
+you may omit <code>AddModule mod_proxy.c</code>)
+</blockquote></td></tr></table></td></tr><tr class="noPrint"><td width="20%" valign="top" nowrap class="noPrint"></td><td width="80%" valign="top" align="left"><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="comments_section" id="comments_section"><strong>Comments</strong></a></font></td></tr><tr><td><blockquote><p class="notice"><strong>Notice: </strong>This is not a Q&A section.
+ The Apache Comments System is explained
+ <a href="/tomcat-8.0-doc/comments.html">here</a>.
+ Comments should be pointed towards suggestions on improving the documentation
+ or server, and may be removed again by our moderators if they are either
+ implemented or considered invalid/off-topic.
+ Questions on how to manage Apache Tomcat should be directed
+ to our <a href="http://tomcat.apache.org/lists.html">mailing lists</a>.</p><script type="text/javascript"><!--//--><![CDATA[//><!--
+ var comments_shortname = 'tomcat';
+ var comments_identifier = 'http://tomcat.apache.org/tomcat-8.0-doc/proxy-howto.html';
+ (function(w, d) {
+ if (w.location.hostname.toLowerCase() == "tomcat.apache.org") {
+ d.write('<div id="comments_thread"><\/div>');
+ var s = d.createElement('script');
+ s.type = 'text/javascript';
+ s.async = true;
+ s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier;
+ (d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s);
+ }
+ else {
+ d.write('<div id="comments_thread"><strong>Comments are disabled for this page at the moment.</strong><\/div>');
+ }
+ })(window, document);
+ //--><!]]></script></blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr noshade size="1"></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font color="#525D76" size="-1"><em>
+ Copyright © 1999-2012, Apache Software Foundation
+ </em></font></div></td></tr></table></body></html>
\ No newline at end of file
Propchange: tomcat/site/trunk/docs/tomcat-8.0-doc/proxy-howto.html
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: tomcat/site/trunk/docs/tomcat-8.0-doc/proxy-howto.html
------------------------------------------------------------------------------
svn:keywords = Author Date Id Revision
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@tomcat.apache.org
For additional commands, e-mail: dev-help@tomcat.apache.org