Package alpine.filters

Class FqdnForwardFilter

java.lang.Object

alpine.filters.FqdnForwardFilter

All Implemented Interfaces:

javax.servlet.Filter

public final class FqdnForwardFilter
extends Object
implements javax.servlet.Filter

FqdnForwardFilter is a configurable Servlet Filter that can forward requests made to a hostname or IP address to another host via a 301 redirect. The primary use case for this filter is in conjunction with TLS hostname verification. Sample usage:

 <filter>
   <filter-name>FqdnForwardFilter</filter-name>
   <filter-class>alpine.filters.FqdnForwardFilter</filter-class>
   <init-param>
     <param-name>host</param-name>
     <param-value>www.example.com</param-value>
   </init-param>
 </filter>

 <filter-mapping>
   <filter-name>FqdnForwardFilter</filter-name>
   <url-pattern>/*</url-pattern>
 </filter-mapping>

 

Since:

1.0.0

Author:

Steve Springett

Constructor Summary

Constructors

Constructor	Description
FqdnForwardFilter()

Method Summary

Modifier and Type	Method	Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)	Forward requests.....
void	init(javax.servlet.FilterConfig filterConfig)	Initialize "host" parameter from web.xml.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FqdnForwardFilter

public FqdnForwardFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig filterConfig)

Initialize "host" parameter from web.xml.

Specified by:

init in interface javax.servlet.Filter

Parameters:

filterConfig - A filter configuration object used by a servlet container to pass information to a filter during initialization.

doFilter

public void doFilter(javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response,
                     javax.servlet.FilterChain chain)
              throws IOException,
                     javax.servlet.ServletException

Forward requests.....

Specified by:

doFilter in interface javax.servlet.Filter

Parameters:

request - The request object.

response - The response object.

chain - Refers to the FilterChain object to pass control to the next Filter.

Throws:

IOException - a IOException

javax.servlet.ServletException - a ServletException

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter