Author: kkolinko
Date: Sun Apr 27 23:40:48 2014
New Revision: 1590525
URL: http://svn.apache.org/r1590525
Log:
Back-ported r1590474 from tomcat/trunk:
Improving valves documentation.
Move RemoteIpValve and SSLValve into new section "Proxies Support".
Modified:
tomcat/tc7.0.x/trunk/ (props changed)
tomcat/tc7.0.x/trunk/webapps/docs/config/valve.xml
Propchange: tomcat/tc7.0.x/trunk/
------------------------------------------------------------------------------
Merged /tomcat/trunk:r1590474
Modified: tomcat/tc7.0.x/trunk/webapps/docs/config/valve.xml
URL:
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/webapps/docs/config/valve.xml?rev=1590525&r1=1590524&r2=1590525&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/webapps/docs/config/valve.xml (original)
+++ tomcat/tc7.0.x/trunk/webapps/docs/config/valve.xml Sun Apr 27 23:40:48 2014
@@ -598,6 +598,200 @@
</section>
+<section name="Proxies Support">
+
+<subsection name="Remote IP Valve">
+
+ <subsection name="Introduction">
+
+ <p>Tomcat port of
+ <a
href="http://httpd.apache.org/docs/trunk/mod/mod_remoteip.html";>mod_remoteip</a>,
+ this valve replaces the apparent client remote IP address and hostname for
+ the request with the IP address list presented by a proxy or a load
balancer
+ via a request headers (e.g. "X-Forwarded-For").</p>
+
+ <p>Another feature of this valve is to replace the apparent scheme
+ (http/https), server port and <code>request.secure</code> with the scheme
presented
+ by a proxy or a load balancer via a request header
+ (e.g. "X-Forwarded-Proto").</p>
+
+ <p>This Valve may be used at the <code>Engine</code>, <code>Host</code> or
+ <code>Context</code> level as required. Normally, this Valve would be used
+ at the <code>Engine</code> level.</p>
+
+ <p>If used in conjunction with Remote Address/Host valves then this valve
+ should be defined first to ensure that the correct client IP address is
+ presented to the Remote Address/Host valves.</p>
+
+ <p><strong>Note:</strong> By default this valve has no effect on the
+ values that are written into access log. The original values are restored
+ when request processing leaves the valve and that always happens earlier
+ than access logging. To pass the remote address, remote host, server port
+ and protocol values set by this valve to the access log,
+ they are put into request attributes. Publishing these values here
+ is enabled by default, but <code>AccessLogValve</code> should be explicitly
+ configured to use them. See documentation for
+ <code>requestAttributesEnabled</code> attribute of
+ <code>AccessLogValve</code>.</p>
+
+ <p>The names of request attributes that are set by this valve
+ and can be used by access logging are the following:</p>
+
+ <ul>
+ <li><code>org.apache.catalina.AccessLog.RemoteAddr</code></li>
+ <li><code>org.apache.catalina.AccessLog.RemoteHost</code></li>
+ <li><code>org.apache.catalina.AccessLog.Protocol</code></li>
+ <li><code>org.apache.catalina.AccessLog.ServerPort</code></li>
+ <li><code>org.apache.tomcat.remoteAddr</code></li>
+ </ul>
+
+ </subsection>
+
+ <subsection name="Attributes">
+
+ <p>The <strong>Remote IP Valve</strong> supports the
+ following configuration attributes:</p>
+
+ <attributes>
+
+ <attribute name="className" required="true">
+ <p>Java class name of the implementation to use. This MUST be set to
+ <strong>org.apache.catalina.valves.RemoteIpValve</strong>.</p>
+ </attribute>
+
+ <attribute name="remoteIpHeader" required="false">
+ <p>Name of the HTTP Header read by this valve that holds the list of
+ traversed IP addresses starting from the requesting client. If not
+ specified, the default of <code>x-forwarded-for</code> is used.</p>
+ </attribute>
+
+ <attribute name="internalProxies" required="false">
+ <p>Regular expression (using <code>java.util.regex</code>) that a
+ proxy's IP address must match to be considered an internal proxy.
+ Internal proxies that appear in the <strong>remoteIpHeader</strong>
will
+ be trusted and will not appear in the <strong>proxiesHeader</strong>
+ value. If not specified the default value of <code>
+
10\.\d{1,3}\.\d{1,3}\.\d{1,3}|192\.168\.\d{1,3}\.\d{1,3}|169\.254\.\d{1,3}\.\d{1,3}|127\.\d{1,3}\.\d{1,3}\.\d{1,3}
+ </code> will be used.</p>
+ </attribute>
+
+ <attribute name="proxiesHeader" required="false">
+ <p>Name of the HTTP header created by this valve to hold the list of
+ proxies that have been processed in the incoming
+ <strong>remoteIpHeader</strong>. If not specified, the default of
+ <code>x-forwarded-by</code> is used.</p>
+ </attribute>
+
+ <attribute name="requestAttributesEnabled" required="false">
+ <p>Set to <code>true</code> to set the request attributes used by
+ AccessLog implementations to override the values returned by the
+ request for remote address, remote host, server port and protocol.
+ Request attributes are also used to enable the forwarded remote address
+ to be displayed on the status page of the Manager web application.
+ If not set, the default value of <code>true</code> will be used.</p>
+ </attribute>
+
+ <attribute name="trustedProxies" required="false">
+ <p>Regular expression (using <code>java.util.regex</code>) that a
+ proxy's IP address must match to be considered an trusted proxy.
+ Trusted proxies that appear in the <strong>remoteIpHeader</strong> will
+ be trusted and will appear in the <strong>proxiesHeader</strong> value.
+ If not specified, no proxies will be trusted.</p>
+ </attribute>
+
+ <attribute name="protocolHeader" required="false">
+ <p>Name of the HTTP Header read by this valve that holds the protocol
+ used by the client to connect to the proxy. If not specified, the
+ default of <code>null</code> is used.</p>
+ </attribute>
+
+ <attribute name="portHeader" required="false">
+ <p>Name of the HTTP Header read by this valve that holds the port
+ used by the client to connect to the proxy. If not specified, the
+ default of <code>null</code> is used.</p>
+ </attribute>
+
+ <attribute name="protocolHeaderHttpsValue" required="false">
+ <p>Value of the <strong>protocolHeader</strong> to indicate that it is
+ an HTTPS request. If not specified, the default of <code>https</code>
is
+ used.</p>
+ </attribute>
+
+ <attribute name="httpServerPort" required="false">
+ <p>Value returned by <code>ServletRequest.getServerPort()</code>
+ when the <strong>protocolHeader</strong> indicates <code>http</code>
+ protocol and no <strong>portHeader</strong> is present. If not
+ specified, the default of <code>80</code> is used.</p>
+ </attribute>
+
+ <attribute name="httpsServerPort" required="false">
+ <p>Value returned by <code>ServletRequest.getServerPort()</code>
+ when the <strong>protocolHeader</strong> indicates <code>https</code>
+ protocol and no <strong>portHeader</strong> is present. If not
+ specified, the default of <code>443</code> is used.</p>
+ </attribute>
+
+ <attribute name="changeLocalPort" required="false">
+ <p>If <code>true</code>, the value returned by
+ <code>ServletRequest.getLocalPort()</code> and
+ <code>ServletRequest.getServerPort()</code> is modified by the this
+ valve. If not specified, the default of <code>false</code> is used.</p>
+ </attribute>
+
+ </attributes>
+
+ </subsection>
+
+</subsection>
+
+
+<subsection name="SSL Valve">
+
+ <subsection name="Introduction">
+
+ <p>When using mod_proxy_http, the client SSL information is not included in
+ the protocol (unlike mod_jk and mod_proxy_ajp). To make the client SSL
+ information available to Tomcat, some additional configuration is required.
+ In httpd, mod_headers is used to add the SSL information as HTTP headers.
In
+ Tomcat, this valve is used to read the information from the HTTP headers
and
+ insert it into the request.</p>
+
+ <p>Note: Ensure that the headers are always set by httpd for all requests
to
+ prevent a client spoofing SSL information by sending fake headers.</p>
+
+ <p>To configure httpd to set the necessary headers, add the following:</p>
+<source><IfModule ssl_module>
+ RequestHeader set SSL_CLIENT_CERT "%{SSL_CLIENT_CERT}s"
+ RequestHeader set SSL_CIPHER "%{SSL_CIPHER}s"
+ RequestHeader set SSL_SESSION_ID "%{SSL_SESSION_ID}s"
+ RequestHeader set SSL_CIPHER_USEKEYSIZE "%{SSL_CIPHER_USEKEYSIZE}s"
+</IfModule></source>
+
+ </subsection>
+
+ <subsection name="Attributes">
+
+ <p>The <strong>SSL Valve</strong> supports the following configuration
+ attribute:</p>
+
+ <attributes>
+
+ <attribute name="className" required="true">
+ <p>Java class name of the implementation to use. This MUST be set to
+ <strong>org.apache.catalina.valves.SSLValve</strong>.
+ </p>
+ </attribute>
+
+ </attributes>
+
+ </subsection>
+
+</subsection>
+
+
+</section>
+
+
<section name="Error Report Valve">
<subsection name="Introduction">
@@ -1280,151 +1474,6 @@
</section>
-<section name="Remote IP Valve">
-
- <subsection name="Introduction">
-
- <p>Tomcat port of
- <a
href="http://httpd.apache.org/docs/trunk/mod/mod_remoteip.html";>mod_remoteip</a>,
- this valve replaces the apparent client remote IP address and hostname for
- the request with the IP address list presented by a proxy or a load
balancer
- via a request headers (e.g. "X-Forwarded-For").</p>
-
- <p>Another feature of this valve is to replace the apparent scheme
- (http/https), server port and <code>request.secure</code> with the scheme
presented
- by a proxy or a load balancer via a request header
- (e.g. "X-Forwarded-Proto").</p>
-
- <p>This Valve may be used at the <code>Engine</code>, <code>Host</code> or
- <code>Context</code> level as required. Normally, this Valve would be used
- at the <code>Engine</code> level.</p>
-
- <p>If used in conjunction with Remote Address/Host valves then this valve
- should be defined first to ensure that the correct client IP address is
- presented to the Remote Address/Host valves.</p>
-
- <p><strong>Note:</strong> By default this valve has no effect on the
- values that are written into access log. The original values are restored
- when request processing leaves the valve and that always happens earlier
- than access logging. To pass the remote address, remote host, server port
- and protocol values set by this valve to the access log,
- they are put into request attributes. Publishing these values here
- is enabled by default, but <code>AccessLogValve</code> should be explicitly
- configured to use them. See documentation for
- <code>requestAttributesEnabled</code> attribute of
- <code>AccessLogValve</code>.</p>
-
- <p>The names of request attributes that are set by this valve
- and can be used by access logging are the following:</p>
-
- <ul>
- <li><code>org.apache.catalina.AccessLog.RemoteAddr</code></li>
- <li><code>org.apache.catalina.AccessLog.RemoteHost</code></li>
- <li><code>org.apache.catalina.AccessLog.Protocol</code></li>
- <li><code>org.apache.catalina.AccessLog.ServerPort</code></li>
- <li><code>org.apache.tomcat.remoteAddr</code></li>
- </ul>
-
- </subsection>
-
- <subsection name="Attributes">
-
- <p>The <strong>Remote IP Valve</strong> supports the
- following configuration attributes:</p>
-
- <attributes>
-
- <attribute name="className" required="true">
- <p>Java class name of the implementation to use. This MUST be set to
- <strong>org.apache.catalina.valves.RemoteIpValve</strong>.</p>
- </attribute>
-
- <attribute name="remoteIpHeader" required="false">
- <p>Name of the HTTP Header read by this valve that holds the list of
- traversed IP addresses starting from the requesting client. If not
- specified, the default of <code>x-forwarded-for</code> is used.</p>
- </attribute>
-
- <attribute name="internalProxies" required="false">
- <p>Regular expression (using <code>java.util.regex</code>) that a
- proxy's IP address must match to be considered an internal proxy.
- Internal proxies that appear in the <strong>remoteIpHeader</strong>
will
- be trusted and will not appear in the <strong>proxiesHeader</strong>
- value. If not specified the default value of <code>
-
10\.\d{1,3}\.\d{1,3}\.\d{1,3}|192\.168\.\d{1,3}\.\d{1,3}|169\.254\.\d{1,3}\.\d{1,3}|127\.\d{1,3}\.\d{1,3}\.\d{1,3}
- </code> will be used.</p>
- </attribute>
-
- <attribute name="proxiesHeader" required="false">
- <p>Name of the HTTP header created by this valve to hold the list of
- proxies that have been processed in the incoming
- <strong>remoteIpHeader</strong>. If not specified, the default of
- <code>x-forwarded-by</code> is used.</p>
- </attribute>
-
- <attribute name="requestAttributesEnabled" required="false">
- <p>Set to <code>true</code> to set the request attributes used by
- AccessLog implementations to override the values returned by the
- request for remote address, remote host, server port and protocol.
- Request attributes are also used to enable the forwarded remote address
- to be displayed on the status page of the Manager web application.
- If not set, the default value of <code>true</code> will be used.</p>
- </attribute>
-
- <attribute name="trustedProxies" required="false">
- <p>Regular expression (using <code>java.util.regex</code>) that a
- proxy's IP address must match to be considered an trusted proxy.
- Trusted proxies that appear in the <strong>remoteIpHeader</strong> will
- be trusted and will appear in the <strong>proxiesHeader</strong> value.
- If not specified, no proxies will be trusted.</p>
- </attribute>
-
- <attribute name="protocolHeader" required="false">
- <p>Name of the HTTP Header read by this valve that holds the protocol
- used by the client to connect to the proxy. If not specified, the
- default of <code>null</code> is used.</p>
- </attribute>
-
- <attribute name="portHeader" required="false">
- <p>Name of the HTTP Header read by this valve that holds the port
- used by the client to connect to the proxy. If not specified, the
- default of <code>null</code> is used.</p>
- </attribute>
-
- <attribute name="protocolHeaderHttpsValue" required="false">
- <p>Value of the <strong>protocolHeader</strong> to indicate that it is
- an HTTPS request. If not specified, the default of <code>https</code>
is
- used.</p>
- </attribute>
-
- <attribute name="httpServerPort" required="false">
- <p>Value returned by <code>ServletRequest.getServerPort()</code>
- when the <strong>protocolHeader</strong> indicates <code>http</code>
- protocol and no <strong>portHeader</strong> is present. If not
- specified, the default of <code>80</code> is used.</p>
- </attribute>
-
- <attribute name="httpsServerPort" required="false">
- <p>Value returned by <code>ServletRequest.getServerPort()</code>
- when the <strong>protocolHeader</strong> indicates <code>https</code>
- protocol and no <strong>portHeader</strong> is present. If not
- specified, the default of <code>443</code> is used.</p>
- </attribute>
-
- <attribute name="changeLocalPort" required="false">
- <p>If <code>true</code>, the value returned by
- <code>ServletRequest.getLocalPort()</code> and
- <code>ServletRequest.getServerPort()</code> is modified by the this
- valve. If not specified, the default of <code>false</code> is used.</p>
- </attribute>
-
- </attributes>
-
- </subsection>
-
-</section>
-
-
<section name="Crawler Session Manager Valve">
<subsection name="Introduction">
@@ -1523,48 +1572,6 @@
</section>
-<section name="SSL Valve">
-
- <subsection name="Introduction">
-
- <p>When using mod_proxy_http, the client SSL information is not included in
- the protocol (unlike mod_jk and mod_proxy_ajp). To make the client SSL
- information available to Tomcat, some additional configuration is required.
- In httpd, mod_headers is used to add the SSL information as HTTP headers.
In
- Tomcat, this valve is used to read the information from the HTTP headers
and
- insert it into the request.</p>
-
- <p>Note: Ensure that the headers are always set by httpd for all requests
to
- prevent a client spoofing SSL information by sending fake headers.</p>
-
- <p>To configure httpd to set the necessary headers, add the following:</p>
-<source><IfModule ssl_module>
- RequestHeader set SSL_CLIENT_CERT "%{SSL_CLIENT_CERT}s"
- RequestHeader set SSL_CIPHER "%{SSL_CIPHER}s"
- RequestHeader set SSL_SESSION_ID "%{SSL_SESSION_ID}s"
- RequestHeader set SSL_CIPHER_USEKEYSIZE "%{SSL_CIPHER_USEKEYSIZE}s"
-</IfModule></source>
-
- </subsection>
-
- <subsection name="Attributes">
-
- <p>The <strong>SSL Valve</strong> supports the following configuration
- attribute:</p>
-
- <attributes>
-
- <attribute name="className" required="true">
- <p>Java class name of the implementation to use. This MUST be set to
- <strong>org.apache.catalina.valves.SSLValve</strong>.
- </p>
- </attribute>
-
- </attributes>
-
- </subsection>
-
-</section>
</body>
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