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(FLT-87) ETag Filter
 
ETag Filter ver. 1.1

This is a Java servlet filter (as per Servlet API 2.3). ETagFilter lets you deal with ETag headers in HTTP requests. As per the HTTP protocol spec ETag is the "entity value for the requested variant". So ETag is HTTP request header defines some token that can be associated with the requested web resource (your html, JSP, XML page etc.).

ETags could be used in conjunction with the "If-None-Match" header in order to take advantage of the client's (browser's) cache. At the first step (first request) our server can generate ETag value for the requested resource and return in during the normal response. Browser will cache the response and the associated ETag value. During the sub-sequential requests browser will send that ETag value back to the server. Server will examine the ETag. As soon as it will be determined that the requested page hasn't changed since last time the same client requested it, server will send back a status code 304 (Not Modified) with an empty body. This trick lets you save a lot of bandwidth.

So this filters uses MD5 hash calculation for setting/checking ETag headers.

Try it Out: http://www.servletsuite.com/servlets/etagflt.htm
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(FLT-90) Exec Time Filter
 
Execution time filter ver. 1.1



This is a Java servlet filter (as per Servlet API 2.3). This filter lets you calculate the execution time for your JSP (and/or Coldfusion) pages.


 

Try it Out: http://www.servletsuite.com/servlets/exectimeflt.htm
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(FLT-84) Expires Filter
Expires filter ver. 1.4


This is a Java servlet filter (as per Servlet API 2.3). This filter lets you define Expires and max-age headers for your output pages. So with this filter you will be able to define a caching time for your pages. The page will be cached until that time expires.
Try it Out: http://www.servletsuite.com/servlets/expflt.htm
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(FLT-98) File Access Filter
 
File access filter ver. 1.3


This is a Java servlet filter (as per Servlet API 2.3). This filter lets you protect some files on your server (web application) from the direct access. For example in your Struts application you need to prohibit the direct access to JSP files etc.
Try it Out: http://www.servletsuite.com/servlets/fileaccessflt.htm
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(FLT-110) Force Referrer Filter
 
 
Force referer filter ver. 1.3


This is a Java servlet filter (as per Servlet API 2.3). The idea behind this filter is very simple. Filter lets you stop downloading files from your site by users that are not visiting your site itself. For example, if someone tries to download a file from your site: http://your_site/your_file.zip by click on that link on another site: http://some_site/list_of_files.htm. In this case REFERER header in HTTP request points to some_site. And vice versa if your visitor clicks on the same link on your site REFERER header points to your site. So filter lets you set a mandatory value for REFERER header and redirect all the policy violated requests to some page.
Try it Out: http://www.servletsuite.com/servlets/forcerefererflt.htm
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(FLT-138) Generic Postprocessor
Generic postprocessor ver. 1.4



This is a Java servlet filter (as per Servlet API 2.3). This filter lets you post process incoming requests right in JSP pages. So each incoming request will be forwarded after the standard processing to some JSP page (provided as a parameter for this filter). This JSP will play a role of postprocessor.
Try it out: http://www.servletsuite.com/servlets/generic1flt.htm
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(FLT-137) Generic Preprocessor
Generic preprocessor ver. 1.5



This is a Java servlet filter (as per Servlet API 2.3). This filter lets you preprocess incoming requests right in JSP pages. So each incoming request will be forwarded to some JSP page (provided as a parameter for this filter). This JSP will play a role of preprocessor.
Try it out: http://www.servletsuite.com/servlets/genericflt.htm
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(FLT-115) Google Analytics Filter
 
 
Google Analytics Filter ver. 1.1


This is a Java servlet filter (as per Servlet API 2.3). UrchinFilter lets you add dynamically Google Analytics tracking code to the requested pages.
Try it Out: http://www.servletsuite.com/servlets/urchinflt.htm
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(FLT-101) Host Filter
 
 
 


Host filter ver. 1.1

This is a Java servlet filter (as per Servlet API 2.3). This filter lets you check Host header in HTTP requests. You can provide a list of allowed values this header, so any request with the wrong value will be prohibited. Filter lets you protect your web applications from DNS rebinding attack.
Try it Out: http://www.servletsuite.com/servlets/hostflt.htm
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(FLT-125) i18n Filter
i18n filter ver. 1.2

This is a Java servlet filter (as per Servlet API 2.3). This filter provides a simple tool for the localization. Incoming requests say to some page index.jsp could be redirected to page index-eng.jsp, index-ru.jsp etc. depending on the locale in the request.
Try it Out: http://www.servletsuite.com/servlets/i18nflt.htm
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