Gah! Well at least it was easy. Thanks Andre that was exactly right and can't 
believe I overlooked that. Thanks again,

Scott


________________________________
From: André Warnier (tomcat) <a...@ice-sa.com>
Sent: Thursday, March 29, 2018 8:45 AM
To: users@tomcat.apache.org
Subject: Re: On Tomcat 8.5.16, RemoteHostFilter throwing ServletException the 
property [allow] is not defined

On 29.03.2018 16:36, Scott Shipp wrote:
> Hi everyone,
>
>
> I'm having a problem I haven't been able to address after reading the manual, 
> googling and searching Stack Overflow, and asking around to other Tomcat 
> users I know.
>
>
> I'm using Tomcat 8.5.16, and trying to set up a RemoteHostFilter. When I 
> start the application with the RemoteHostFilter, it fails to startup with the 
> following stack trace:
>
>
> Exception starting filter [Remote Host Filter] 
> javax.servlet.ServletException: The property [allow] is not defined for 
> filters of type [org.apache.catalina.filters.RemoteHostFilter]
>      at org.apache.catalina.filters.FilterBase.init(FilterBase.java:52)
>      at 
> org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:285)
>      at 
> org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:266)
>      at 
> org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108)
>      at 
> org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4590)
>      at 
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5233)
>      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
>      at 
> org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
>      at 
> org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
>      at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
>      at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:988)
>      at 
> org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1860)
>      at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>      at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>      at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>      at java.lang.Thread.run(Thread.java:748)
>
> I see the allow property mentioned in both the user guide documentation 
> (here: 
> https://tomcat.apache.org/tomcat-8.5-doc/config/filter.html#Remote_Host_Filter)
>  and the javadoc (here: 
> https://tomcat.apache.org/tomcat-8.5-doc/api/org/apache/catalina/filters/RemoteHostFilter.html).
Apache Tomcat 8 Configuration Reference (8.5.28 
...<https://tomcat.apache.org/tomcat-8.5-doc/config/filter.html#Remote_Host_Filter>
tomcat.apache.org
The HTTP specification is clear that if no character set is specified for media 
sub-types of the "text" media type, the ISO-8859-1 character set must be used.


> RemoteHostFilter (Apache Tomcat 8.5.29 API 
> Documentation)<https://tomcat.apache.org/tomcat-8.5-doc/api/org/apache/catalina/filters/RemoteHostFilter.html>
> tomcat.apache.org
> Extract the desired request property, and pass it (along with the specified 
> request and response objects and associated filter chain) to the protected 
> process ...
>
>
>
>
> To troubleshoot, I set up a RemoteAddrFilter in my application's 
> WEB-INF/web.xml using identical XML except for the value of the filter 
> (obviously) and it works just fine.
>
>
> Does anyone know what the "property [allow] is not defined" message means? I 
> would intuit that it means there is no "allow" property at all in the 
> RemoteHostFilter code, but I suppose it may also mean that the init-param xml 
> tag is not the right one to use or that the value is unintelligible to Tomcat 
> somehow.
>
>
> Also, here's the relevant snippet from the web.xml, that I am trying to use:
>
>
> <filter>
>          <filter-name>Remote Host Filter</filter-name>
>          
> <filter-class>org.apache.catalina.filters.RemoteHostFilter</filter-class>
>          <init-param>
>              <param-name>allow</param-name>
>              <param-value>*\.example\.com</param-value>
>          </init-param>
>          <init-param>
>              <param-name>denyStatus</param-name>
>              <param-value>404</param-value>
>          </init-param>
>      </filter>
>
>      <filter-mapping>
>        <filter-name>Remote Host Filter</filter-name>
>        <url-pattern>/url/path</url-pattern>
>      </filter-mapping>
>

Hi.
I am not familiar with that filter, but I just looked at the doc you are 
pointing to, and
I believe that the *<param-value>* that you indicate above is invalid.  It 
should be a
regex, and the leading "*" there is wrong then.
Maybe it is just the error message that is wrong, and it is really complaining 
about the
value ?



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