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| <!DOCTYPE document [ |
| <!ENTITY project SYSTEM "project.xml"> |
| ]> |
| <document url="systemprops.html"> |
| |
| &project; |
| |
| <properties> |
| <title>System Properties</title> |
| </properties> |
| |
| <body> |
| |
| <section name="Table of Contents"> |
| <toc/> |
| </section> |
| |
| <section name="Introduction"> |
| <p>The following sections list the system properties that may be set to modify |
| the default Tomcat behaviour.</p> |
| </section> |
| |
| <section name="Property replacements"> |
| <properties> |
| <property name="org.apache.tomcat.util.digester. PROPERTY_SOURCE"> |
| <p>Set this to a fully qualified name of a class that implements |
| <code>org.apache.tomcat.util.IntrospectionUtils.PropertySource</code>. |
| Required to have a public constructor with no arguments.</p> |
| <p>Use this to add a property source, that will be invoked when <code>${parameter}</code> |
| denoted parameters are found in the XML files that Tomcat parses.</p> |
| </property> |
| </properties> |
| |
| </section> |
| |
| <section name="Clustering"> |
| <properties> |
| |
| <property name="org.apache.catalina. tribes.dns_lookups"> |
| <p>If <code>true</code>, the clustering module will attempt to use DNS to |
| resolve any host names provided in the cluster configuration.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| <section name="Expression Language"> |
| <properties> |
| |
| <property name="org.apache.el.BeanELResolver. CACHE_SIZE"> |
| <p>The number of javax.el.BeanELResolver.BeanProperties objects that will |
| be cached by the EL Parser.</p> |
| <p>If not specified, the default of <code>1000</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.el.ExpressionBuilder. CACHE_SIZE"> |
| <p>The number of parsed EL expressions that will be cached by the EL |
| Parser.</p> |
| <p>If not specified, the default of <code>5000</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.el.parser. COERCE_TO_ZERO"> |
| <p>If <code>true</code>, when coercing <code>null</code>s to objects of |
| type Number, Character or Boolean the result will be <code>0</code> for |
| Number and Character types and <code>false</code> for Boolean as required |
| by the EL 2.2 and earlier specifications. If this property is |
| <code>false</code> the result of the coercion will be <code>null</code> as |
| required by the EL 3.0 specification.</p> |
| <p>If not specified, the default value of <code>false</code> will be |
| used.</p> |
| </property> |
| |
| <property name="org.apache.el.parser. SKIP_IDENTIFIER_CHECK"> |
| <p>If <code>true</code>, when parsing expressions, identifiers will not be |
| checked to ensure that they conform to the Java Language Specification for |
| Java identifiers.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| </properties> |
| </section> |
| |
| <section name="Jasper"> |
| <properties> |
| |
| <property name="org.apache.jasper.compiler. Generator.POOL_TAGS_WITH_EXTENDS"> |
| <p>By default, JSPs that use their own base class via the extends |
| attribute of the page directive, will have Tag pooling disabled since |
| Jasper cannot guarantee that the necessary initialisation will have taken |
| place. This can have a negative impact on performance. Providing the |
| alternative base class calls _jspInit() from Servlet.init(), setting this |
| property to <code>true</code> will enable pooling with an alternative base |
| class. If the alternative base class does not call _jspInit() and this |
| property is <code>true</code>, NPEs will occur when attempting to use |
| tags.</p> |
| <p>If not specified, the default value of <code>false</code> will be used. |
| </p> |
| </property> |
| |
| <property name="org.apache.jasper.compiler. Generator.STRICT_GET_PROPERTY"> |
| <p>If <code>true</code>, the requirement to have the object referenced in |
| <code>jsp:getProperty</code> action to be previously "introduced" |
| to the JSP processor, as specified in the chapter JSP.5.3 of JSP 2.0 and |
| later specifications, is enforced.</p> |
| <p>If not specified, the specification compliant default of |
| <code>true</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.compiler. Generator.VAR_EXPRESSIONFACTORY"> |
| <p>The name of the variable to use for the expression language expression |
| factory.</p> |
| <p>If not specified, the default value of <code>_el_expressionfactory</code> |
| will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.compiler. Generator.VAR_INSTANCEMANAGER"> |
| <p>The name of the variable to use for the instance manager factory.</p> |
| <p>If not specified, the default value of <code>_jsp_instancemanager</code> |
| will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.compiler. Parser.STRICT_QUOTE_ESCAPING"> |
| <p><strong>Deprecated</strong>. Configures the default setting for the |
| <code>strictQuoteEscaping</code> JSP initialisation paramater.</p> |
| <p>If not specified, the specification compliant default of |
| <code>true</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.compiler. Parser.STRICT_WHITESPACE"> |
| <p>If <code>false</code> the requirements for whitespace before an |
| attribute name will be relaxed so that the lack of whitespace will not |
| cause an error.</p> |
| <p>If not specified, the specification compliant default of |
| <code>true</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.runtime. BodyContentImpl.LIMIT_BUFFER"> |
| <p>If <code>true</code>, any tag buffer that expands beyond |
| <code>org.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE</code> will be |
| destroyed and a new buffer created of the default size.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.runtime. JspFactoryImpl.USE_POOL"> |
| <p>If <code>true</code>, a ThreadLocal <code>PageContext</code> pool will |
| be used.</p> |
| <p>If not specified, the default value of <code>true</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.runtime. JspFactoryImpl.POOL_SIZE"> |
| <p>The size of the ThreadLocal <code>PageContext</code>.</p> |
| <p>If not specified, the default value of <code>8</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. JSP_SERVLET_BASE"> |
| <p>The base class of the Servlets generated from the JSPs.</p> |
| <p>If not specified, the default value of |
| <code>org.apache.jasper.runtime.HttpJspBase</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. SERVICE_METHOD_NAME"> |
| <p>The name of the service method called by the base class.</p> |
| <p>If not specified, the default value of <code>_jspService</code> |
| will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. SERVLET_CLASSPATH"> |
| <p>The name of the ServletContext attribute that provides the classpath |
| for the JSP.</p> |
| <p>If not specified, the default value of |
| <code>org.apache.catalina.jsp_classpath</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. JSP_FILE"> |
| <p>The name of the request attribute for <code><jsp-file></code> |
| element of a servlet definition. If present on a request, this overrides |
| the value returned by <code>request.getServletPath()</code> to select the |
| JSP page to be executed.</p> |
| <p>If not specified, the default value of |
| <code>org.apache.catalina.jsp_file</code> will be used.</p> |
| <p><strong>Deprecated:</strong> This will be removed in Tomcat 9.0.x |
| onwards. It is replaced by the use of the jspFile servlet initialisation |
| parameter</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. PRECOMPILE"> |
| <p>The name of the query parameter that causes the JSP engine to just |
| pregenerate the servlet but not invoke it.</p> |
| <p>If not specified, the default value of <code>jsp_precompile</code> |
| will be used, as defined by JSP specification (JSP.11.4.2).</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. JSP_PACKAGE_NAME"> |
| <p>The default package name for compiled jsp pages.</p> |
| <p>If not specified, the default value of <code>org.apache.jsp</code> |
| will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. TAG_FILE_PACKAGE_NAME"> |
| <p>The default package name for tag handlers generated from tag files.</p> |
| <p>If not specified, the default value of <code>org.apache.jsp.tag</code> |
| will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. ALT_DD_ATTR"> |
| <p>The servlet context attribute under which the alternate deployment |
| descriptor for this web application is stored.</p> |
| <p>If not specified, the default value of |
| <code>org.apache.catalina.deploy.alt_dd</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. TEMP_VARIABLE_NAME_PREFIX"> |
| <p>Prefix to use for generated temporary variable names.</p> |
| <p>If not specified, the default value of <code>_jspx_temp</code> |
| will be used.</p> |
| </property> |
| |
| <property name="org.apache.jasper.Constants. USE_INSTANCE_MANAGER_FOR_TAGS"> |
| <p>If <code>true</code>, the instance manager is used to obtain tag |
| handler instances.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| |
| <section name="Security"> |
| |
| <properties> |
| |
| <property name="org.apache.catalina.connector. RECYCLE_FACADES"> |
| <p>If this is <code>true</code> or if a security manager is in use a new |
| facade object will be created for each request.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| <property |
| name="org.apache.catalina.connector. CoyoteAdapter.ALLOW_BACKSLASH"> |
| <p>If this is <code>true</code> the '\' character will be permitted as a |
| path delimiter.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| <property |
| name="org.apache.tomcat.util.buf. UDecoder.ALLOW_ENCODED_SLASH"> |
| <p>If this is <code>true</code> '%2F' and '%5C' will be permitted as path |
| delimiters.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| |
| <section name="Specifications"> |
| |
| <properties> |
| |
| <property name="org.apache.catalina. STRICT_SERVLET_COMPLIANCE"> |
| <p>The default value of this system property is <code>false</code>.</p> |
| <p>If this is <code>true</code> the default values will be changed for:</p> |
| <ul> |
| <li><code>org.apache.catalina.core.<br/>ApplicationContext.GET_RESOURCE_REQUIRE_SLASH</code></li> |
| <li><code>org.apache.catalina.core.<br/>ApplicationDispatcher.WRAP_SAME_OBJECT</code></li> |
| <li><code>org.apache.catalina.core.<br/>StandardHostValve.ACCESS_SESSION</code></li> |
| <li><code>org.apache.catalina.session.<br/>StandardSession.ACTIVITY_CHECK</code></li> |
| <li><code>org.apache.catalina.session.<br/>StandardSession.LAST_ACCESS_AT_START</code></li> |
| <li><code>org.apache.tomcat.util.http.<br/>ServerCookie.ALWAYS_ADD_EXPIRES</code></li> |
| <li><code>org.apache.tomcat.util.http.<br/>ServerCookie.FWD_SLASH_IS_SEPARATOR</code></li> |
| <li><code>org.apache.tomcat.util.http.<br/>ServerCookie.STRICT_NAMING</code></li> |
| <li>The <code>URIEncoding</code> attribute of any |
| <a href="http.html">HTTP connector</a> or |
| <a href="ajp.html">AJP connector</a> element.</li> |
| <li>The <code>resourceOnlyServlets</code> attribute of any |
| <a href="context.html">Context</a> element.</li> |
| <li>The <code>tldValidation</code> attribute of any |
| <a href="context.html">Context</a> element.</li> |
| <li>The <code>useRelativeRedirects</code> attribute of any |
| <a href="context.html">Context</a> element.</li> |
| <li>The <code>xmlNamespaceAware</code> attribute of any |
| <a href="context.html">Context</a> element.</li> |
| <li>The <code>xmlValidation</code> attribute of any |
| <a href="context.html">Context</a> element.</li> |
| </ul> |
| |
| <p>Note that changing a number of the above defaults is likely to break |
| the majority of systems as some browsers are unable to correctly handle |
| the cookie headers that result from a strict adherence to the |
| specifications. Defaults, regardless of whether or not they have been |
| changed by setting |
| <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> can always be |
| overridden by explicitly setting the appropriate system property or element |
| attribute.</p> |
| </property> |
| |
| <property name="org.apache.catalina.connector. Response.ENFORCE_ENCODING_IN_GET_WRITER"> |
| <p>If this is <code>true</code> then |
| a call to <code>Response.getWriter()</code> if no character encoding |
| has been specified will result in subsequent calls to |
| <code>Response.getCharacterEncoding()</code> returning |
| <code>ISO-8859-1</code> and the <code>Content-Type</code> response header |
| will include a <code>charset=ISO-8859-1</code> component. (SRV.15.2.22.1)</p> |
| <p>If not specified, the default specification compliant value of |
| <code>true</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.catalina.core.ApplicationContext .GET_RESOURCE_REQUIRE_SLASH"> |
| <p>If this is <code>true</code> then the path passed to |
| <code>ServletContext.getResource()</code> or |
| <code>ServletContext.getResourceAsStream()</code> must start with |
| "/". If <code>false</code>, code like |
| <code>getResource("myfolder/myresource.txt")</code> will work as Tomcat |
| will prepend "/" to the provided path.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>true</code>, |
| else the default value will be <code>false</code>.</p> |
| </property> |
| |
| <property name="org.apache.catalina.core. ApplicationDispatcher.WRAP_SAME_OBJECT"> |
| <p>If this is <code>true</code> then any wrapped request or response |
| object passed to an application dispatcher will be checked to ensure that |
| it has wrapped the original request or response.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>true</code>, |
| else the default value will be <code>false</code>.</p> |
| </property> |
| |
| <property name="org.apache.tomcat.websocket. STRICT_SPEC_COMPLIANCE"> |
| <p>The default value of this system property is <code>false</code>.</p> |
| <p>If this is <code>true</code> the default values will be changed for:</p> |
| <ul> |
| <li><code>org.apache.tomcat.websocket.server#isEnforceNoAddAfterHandshake</code> |
| (default changes from <code>false</code> to <code>true</code>)</li> |
| </ul> |
| |
| </property> |
| |
| <property |
| name="org.apache.tomcat.util.http. ServerCookie.ALLOW_EQUALS_IN_VALUE"> |
| <p>Deprecated. This will be removed in Tomcat 9. Specify the |
| <code>allowEqualsInValue</code> attribute on the |
| <a href="cookie-processor.html">org.apache.tomcat.util.http.LegacyCookieProcessor</a> |
| instead.</p> |
| <p>This sets the default value for <code>allowEqualsInValue</code> |
| attribute on the |
| <code>org.apache.tomcat.util.http.LegacyCookieProcessor</code>. |
| If this is <code>true</code> Tomcat will allow '<code>=</code>' |
| characters when parsing unquoted cookie values. If <code>false</code>, |
| cookie values containing '<code>=</code>' will be terminated when the |
| '<code>=</code>' is encountered and the remainder of the cookie value will |
| be dropped.</p> |
| <p>If not specified, the default specification compliant value of |
| <code>false</code> will be used.</p> |
| </property> |
| |
| <property |
| name="org.apache.tomcat.util.http. ServerCookie.ALLOW_HTTP_SEPARATORS_IN_V0"> |
| <p>Deprecated. This will be removed in Tomcat 9. Specify the |
| <code>allowHttpSepsInV0</code> attribute on the |
| <a href="cookie-processor.html">org.apache.tomcat.util.http.LegacyCookieProcessor</a> |
| instead.</p> |
| <p>This sets the default value for <code>allowHttpSepsInV0</code> |
| attribute on the |
| <code>org.apache.tomcat.util.http.LegacyCookieProcessor</code>. |
| If this is <code>true</code> Tomcat will allow HTTP separators in |
| cookie names and values.</p> |
| <p>If not specified, the default specification compliant value of |
| <code>false</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.tomcat.util.http. ServerCookie.ALLOW_NAME_ONLY"> |
| <p>Deprecated. This will be removed in Tomcat 9. Specify the |
| <code>allowNameOnly</code> attribute on the |
| <a href="cookie-processor.html">org.apache.tomcat.util.http.LegacyCookieProcessor</a> |
| instead.</p> |
| <p>If this is <code>false</code> then the requirements of the cookie specifications |
| that cookies must have values will be enforced and cookies consisting only |
| of a name but no value will be ignored.</p> |
| <p>If not specified, the default specification compliant value of |
| <code>false</code> will be used.</p> |
| </property> |
| |
| <property |
| name="org.apache.tomcat.util.http. ServerCookie.ALWAYS_ADD_EXPIRES"> |
| <p>If this is <code>true</code> Tomcat will always add an expires |
| parameter to a SetCookie header even for cookies with version greater than |
| zero. This is to work around a known IE6 and IE7 bug that causes IE to |
| ignore the Max-Age parameter in a SetCookie header.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>false</code>, |
| else the default value will be <code>true</code>.</p> |
| </property> |
| |
| <property |
| name="org.apache.tomcat.util.http. ServerCookie.FWD_SLASH_IS_SEPARATOR"> |
| <p> If this is true then the <code>/</code> (forward slash) character will |
| be treated as a separator. Note that this character is frequently used in |
| cookie path attributes and some browsers will fail to process a cookie if |
| the path attribute is quoted as is required by a strict adherence to the |
| specifications. This is highly likely to break session tracking using |
| cookies.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>true</code>, |
| else the default value will be <code>false</code>.</p> |
| </property> |
| |
| <property name="org.apache.tomcat.util.http. ServerCookie.PRESERVE_COOKIE_HEADER"> |
| <p>Deprecated. This attribute is no longer used. From Tomcat 8.0.31, |
| Tomcat will always preserve the cookie header returned by |
| <code>HttpServletRequest.getHeader()</code>. This will be removed in |
| Tomcat 9.</p> |
| </property> |
| |
| <property name="org.apache.tomcat.util.http. ServerCookie.STRICT_NAMING"> |
| <p> If this is <code>true</code> then the requirements of the Servlet specification |
| that Cookie names must adhere to RFC2109 (no use of separators) will be |
| enforced.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>true</code>, |
| else the default value will be <code>false</code>.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| |
| <section name="Sessions"> |
| |
| <properties> |
| |
| <property name="org.apache.catalina.authenticator. |
| Constants.SSO_SESSION_COOKIE_NAME"> |
| <p>An alternative name for the single sign on session cookie. Defaults to |
| <code>JSESSIONIDSSO</code>.</p> |
| </property> |
| |
| <property name="org.apache.catalina.core. StandardHostValve.ACCESS_SESSION"> |
| <p>If this is <code>true</code>, every request that is associated with a |
| session will cause the session's last accessed time to be updated |
| regardless of whether or not the request explicitly accesses the session.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>true</code>, |
| else the default value will be <code>false</code>.</p> |
| </property> |
| |
| <property |
| name="org.apache.catalina.session. StandardSession.ACTIVITY_CHECK"> |
| <p>If this is <code>true</code>, Tomcat will track the number of active |
| requests for each session. When determining if a session is valid, any |
| session with at least one active request will always be considered valid.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>true</code>, |
| else the default value will be <code>false</code>.</p> |
| </property> |
| |
| <property |
| name="org.apache.catalina.session. StandardSession.LAST_ACCESS_AT_START"> |
| <p>If this is <code>true</code>, the last accessed time for sessions will |
| be calculated from the beginning of the previous request. If |
| <code>false</code>, the last accessed time for sessions will be calculated |
| from the end of the previous request. This also affects how the idle time |
| is calculated.</p> |
| <p>If <code>org.apache.catalina.STRICT_SERVLET_COMPLIANCE</code> is set to |
| <code>true</code>, the default of this setting will be <code>true</code>, |
| else the default value will be <code>false</code>.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| <section name="Logging"> |
| |
| <properties> |
| |
| <property name="org.apache.juli.formatter"> |
| <p>If no logging configuration file is specified and no logging configuration class is specified |
| using the <code>java.util.logging.config.class</code> and <code>java.util.logging.config.file</code> |
| properties the default logging framework <code>org.apache.juli</code> will use the default |
| <code>java.util.logging.SimpleFormatter</code> for all console output. |
| To simply override the console output formatter, one can use the described property. Example: |
| <code>-Dorg.apache.juli.formatter=org.apache.juli.OneLineFormatter</code></p> |
| </property> |
| |
| <property name="org.apache.juli. AsyncOverflowDropType"> |
| <p>When the memory limit of records has been reached the system needs to determine what action to take. |
| Currently there are three actions that can be taken: |
| </p> |
| <ul> |
| <li><code>int OVERFLOW_DROP_LAST = 1</code> - the record that caused the overflow will be dropped and not logged</li> |
| <li><code>int OVERFLOW_DROP_FIRST = 2</code> - the record that is next in line to be logged will be dropped to make room for the latest record on the queue</li> |
| <li><code>int OVERFLOW_DROP_FLUSH = 3</code> - suspend the thread while the queue empties out and flushes the entries to the write buffer</li> |
| <li><code>int OVERFLOW_DROP_CURRENT = 4</code> - drop the current log entry</li> |
| </ul> |
| <p>The default value is <code>1</code> (OVERFLOW_DROP_LAST).</p> |
| </property> |
| |
| <property name="org.apache.juli. AsyncMaxRecordCount"> |
| <p>The max number of log records that the async logger will keep in memory. When this limit is reached and a new record is being logged by the |
| JULI framework the system will take an action based on the <code>org.apache.juli.AsyncOverflowDropType</code> setting.</p> |
| <p>The default value is <code>10000</code> records. |
| This number represents the global number of records, not on a per handler basis. |
| </p> |
| </property> |
| |
| <property name="org.apache.juli. AsyncLoggerPollInterval"> |
| <p>The poll interval in milliseconds for the asynchronous logger thread in milliseconds. |
| If the log queue is empty, the async thread will issue a poll(poll interval) |
| in order to not wake up too often.</p> |
| <p>The default value is <code>1000</code> milliseconds.</p> |
| </property> |
| |
| <property name="org.apache.juli.logging. UserDataHelper.CONFIG"> |
| <p>The type of logging to use for errors generated by invalid input data. |
| The options are: <code>DEBUG_ALL</code>, <code>INFO_THEN_DEBUG</code>, |
| <code>INFO_ALL</code> and <code>NONE</code>. When |
| <code>INFO_THEN_DEBUG</code> is used, the period for which errors are |
| logged at DEBUG rather than INFO is controlled by the system property |
| <code>org.apache.juli.logging.UserDataHelper.SUPPRESSION_TIME</code>. |
| </p> |
| <p>The default value is <code>INFO_THEN_DEBUG</code>.</p> |
| <p>The errors currently logged using this system are:</p> |
| <ul> |
| <li>invalid cookies;</li> |
| <li>invalid parameters;</li> |
| <li>too many headers, too many parameters (hitting |
| <code>maxHeaderCount</code> or <code>maxParameterCount</code> limits |
| of a <a href="http.html">connector</a>).</li> |
| </ul> |
| <p>Other errors triggered by invalid input data may be added to this |
| system in later versions.</p> |
| </property> |
| |
| <property name="org.apache.juli.logging. UserDataHelper.SUPPRESSION_TIME"> |
| <p>When using <code>INFO_THEN_DEBUG</code> for |
| <code>org.apache.juli.logging.UserDataHelper.CONFIG</code> this system |
| property controls how long messages are logged at DEBUG after a message |
| has been logged at INFO. Once this period has elapsed, the next message |
| will be logged at INFO followed by a new suppression period where |
| messages are logged at DEBUG and so on. The value is measured |
| in seconds.</p> |
| <p>A value of <code>0</code> is equivalent to using <code>INFO_ALL</code> |
| for <code>org.apache.juli.logging.UserDataHelper.CONFIG</code>.</p> |
| <p>A negative value means an infinite suppression period.</p> |
| <p>The default value is <code>86400</code> (24 hours).</p> |
| </property> |
| </properties> |
| |
| </section> |
| |
| <section name="JAR Scanning"> |
| |
| <properties> |
| <property name="tomcat.util.scan. StandardJarScanFilter.jarsToSkip"> |
| <p>A list of comma-separated file name patters that is used as the default |
| value for <code>pluggabilitySkip</code> and <code>tldSkip</code> |
| attributes of the standard |
| <a href="jar-scan-filter.html">JarScanFilter</a> implementation.</p> |
| <p>The coded default empty, however the system property is set in |
| a default Tomcat installation via the |
| <code>$CATALINA_BASE/conf/catalina.properties</code> file.</p> |
| </property> |
| |
| <property name="tomcat.util.scan. StandardJarScanFilter.jarsToScan"> |
| <p>A list of comma-separated file name patters that is used as the default |
| value for <code>pluggabilityScan</code> and <code>tldScan</code> |
| attributes of the standard |
| <a href="jar-scan-filter.html">JarScanFilter</a> implementation.</p> |
| <p>The coded default empty, however the system property is set in |
| a default Tomcat installation via the |
| <code>$CATALINA_BASE/conf/catalina.properties</code> file.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| <section name="Websockets"> |
| |
| <properties> |
| |
| <property name="org.apache.tomcat .websocket.ALLOW_UNSUPPORTED_EXTENSIONS"> |
| <p>If <code>true</code>, allow unknown extensions to be declared by |
| the user.</p> |
| <p>The default value is <code>false</code>.</p> |
| </property> |
| |
| <property name="org.apache.tomcat. websocket.DEFAULT_ORIGIN_HEADER_VALUE"> |
| <p>Default value of the origin header that will be sent by the client |
| during the upgrade handshake.</p> |
| <p>The default is null so that no origin header is sent.</p> |
| </property> |
| |
| <property name="org.apache.tomcat. websocket.DEFAULT_PROCESS_PERIOD"> |
| <p>The number of periodic ticks between periodic processing which |
| involves in particular session expiration checks.</p> |
| <p>The default value is <code>10</code> which corresponds to 10 |
| seconds.</p> |
| </property> |
| |
| <property name="org.apache.tomcat. websocket.DISABLE_BUILTIN_EXTENSIONS"> |
| <p>If <code>true</code>, disable all built-in extensions provided by the |
| server, such as message compression.</p> |
| <p>The default value is <code>false</code>.</p> |
| </property> |
| |
| <property name="org.apache.tomcat. websocket.STREAMS_DROP_EMPTY_MESSAGES"> |
| <p>If <code>true</code>, streams provided to the user (writer and output |
| stream) will not send an empty message when flushing and there is no |
| data to flush, or when it is closed without having been used (for |
| example if an error occurs).</p> |
| <p>The default value is <code>false</code>.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| <section name="Other"> |
| |
| <properties> |
| |
| <property |
| name="org.apache.coyote. USE_CUSTOM_STATUS_MSG_IN_HEADER"><p>If this is |
| <code>true</code>, custom HTTP status messages will be used within HTTP |
| headers. If a custom message is specified that is not valid for use in an |
| HTTP header (as defined by RFC2616) then the custom message will be |
| ignored and the default message used.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| <property name="catalina.useNaming"> |
| <p>If this is <code>false</code> it will override the |
| <code>useNaming</code> attribute for all <a href="context.html"> |
| Context</a> elements.</p> |
| </property> |
| |
| <property name="javax.sql.DataSource.Factory"> |
| <p>The class name of the factory to use to create resources of type |
| <code>javax.sql.DataSource</code>. If not specified the default of |
| <code>org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory</code> is used |
| which is a package renamed (to avoid conflicts) copy of |
| <a href="http://commons.apache.org/dbcp">Apache Commons DBCP</a>.</p> |
| </property> |
| |
| <property name="javax.mail.Session.Factory"> |
| <p>The class name of the factory to use to create resources of type |
| <code>javax.mail.Session</code>. If not specified the default of |
| <code>org.apache.naming.factory.MailSessionFactory</code> is used.</p> |
| </property> |
| |
| <property name="jvmRoute"> |
| <p>Provides a default value for the <code>jvmRoute</code> attribute of the |
| <a href="engine.html">Engine</a> element. It does not override the value |
| configured on the <a href="engine.html">Engine</a> element.</p> |
| </property> |
| |
| <property name="catalina.config"> |
| <p>The URL for the catalina.properties configuration file.</p> |
| </property> |
| |
| <property name="tomcat.util.buf.StringCache.byte.enabled"> |
| <p>If <code>true</code>, the String cache is enabled for |
| <code>ByteChunk</code>.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| <property name="tomcat.util.buf.StringCache.char.enabled"> |
| <p>If <code>true</code>, the String cache is enabled for |
| <code>CharChunk</code>.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| <property name="tomcat.util.buf.StringCache.trainThreshold"> |
| <p>The number of times <code>toString()</code> must be called before the |
| cache is activated.</p> |
| <p>If not specified, the default value of <code>20000</code> will be used.</p> |
| </property> |
| |
| <property name="tomcat.util.buf.StringCache.cacheSize"> |
| <p>The size of the String cache.</p> |
| <p>If not specified, the default value of <code>200</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.tomcat.util.buf.UriUtil. WAR_SEPARATOR"> |
| <p>The character to use to separate the WAR file and WAR content parts of |
| a WAR URL using the custom WAR scheme provided by Tomcat. This is |
| equivalent to how <code>!</code> is used in JAR URLs.</p> |
| <p>If not specified, the default value of <code>*</code> will be used.</p> |
| </property> |
| |
| <property name="tomcat.util.buf.StringCache.maxStringSize"> |
| <p>The maximum length of String that will be cached.</p> |
| <p>If not specified, the default value of <code>128</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.tomcat.util. http.FastHttpDateFormat.CACHE_SIZE"> |
| <p>The size of the cache to use parsed and formatted date value.</p> |
| <p>If not specified, the default value of <code>1000</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.tomcat.util. net.NioSelectorShared"> |
| <p>If <code>true</code>, use a shared selector for servlet write/read.</p> |
| <p>If not specified, the default value of <code>true</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.catalina.startup. EXIT_ON_INIT_FAILURE"> |
| <p>If <code>true</code>, the server will exit if an exception happens |
| during the server initialization phase.</p> |
| <p>If not specified, the default value of <code>false</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.catalina.startup. RealmRuleSet.MAX_NESTED_REALM_LEVELS"> |
| <p>The CombinedRealm allows nested Realms. This property controls the |
| maximum permitted number of levels of nesting.</p> |
| <p>If not specified, the default value of <code>3</code> will be used.</p> |
| </property> |
| |
| <property name="org.apache.catalina.startup. CredentialHandlerRuleSet.MAX_NESTED_LEVELS"> |
| <p>The NestedCredentialHandler allows nested CredentialHandlers. This |
| property controls the maximum permitted number of levels of nesting.</p> |
| <p>If not specified, the default value of <code>3</code> will be used.</p> |
| </property> |
| |
| <property name="tomcat.util.http.parser.HttpParser. requestTargetAllow"> |
| <p>A string comprised of characters the server should allow even when they are not encoded. |
| These characters would normally result in a 400 status.</p> |
| <p>The acceptable characters for this property are: <code>|</code>, <code>{</code> |
| , and <code>}</code></p> |
| <p><strong>WARNING</strong>: Use of this option will expose the server to CVE-2016-6816. |
| </p> |
| <p>If not specified, the default value of <code>null</code> will be used.</p> |
| </property> |
| |
| </properties> |
| |
| </section> |
| |
| |
| </body> |
| </document> |
