Implemented redirect on exception feature. The URLs used for redirection can be absolute or relative. The relative URLs are resolved by ViewHandler.getResourceURL method.

The mappings between the thrown exceptions and the URLs that the browser should be redirected to are to be defined as the value of the newly introduced org.icefaces.redirectOnExceptionMapping context parameter.
Here's an example:

    <context-param>
        <param-name>org.icefaces.redirectOnExceptionMapping</param-name>
        <param-value>
            org.icefaces.demo.FirstException::http://yahoo.com/
            org.icefaces.demo.SecondException::/login.jsf
            org.icefaces.demo.ThirdException::summary.jsf
        </param-value>
    </context-param>

As you can see the full qualified class name of the exception is separated by the corresponding redirect URI by two colons ::. Also each mapping is separated by empty space (such as \n).

I can't confirm this behavior on Ice 4 rev. 41336.

In real app with this configuration

<context-param><!-- previous solution-->
<param-name>org.icefaces.sessionExpiredRedirectURI</param-name>
<param-value>'closed.jsp'</param-value>
</context-param>
<context-param>
<param-name>org.icefaces.redirectOnExceptionMapping</param-name>
<param-value>
org.icefaces.application.SessionExpiredException::/closed.jsp?sessionExpired
java.lang.Throwable::/error.iface
</param-value>
</context-param>
<context-param>
<param-name>org.icefaces.blockUIOnSubmit</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.icefaces.disableDefaultErrorPopups</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.icefaces.strictSessionTimeout</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.icefaces.warnBeforeSessionExpiryInterval</param-name>
<param-value>20</param-value>
</context-param>
<session-config>
<session-timeout>1</session-timeout>
</session-config>
<login-config>
<form-login-config>
<form-login-page>/login.jsp</form-login-page>
<form-error-page>/login.jsp</form-error-page>
</form-login-config>
</login-config>

After timeout SessionExpiredListener.sessionDestroyed is executed but doesn't work as in original comment

//If the session is destroyed and ICEpush is available, we can request a push request immediately
//which should result in a SessionExpiredException being sent to the client.

ExtendedExceptionHandler.handle is called with this line too "new SessionExpiredException("session expired (causing view to expire)"));" ...but SessionExpiredException isn't catched with new handler

Finally any push button action in browser after session timeout send "partial/ajax" request and response has HTTP 200 status and login page in body response but browser do not show this page ...body catched by ajax engine?
Also next responses on blocked browser /listen.icepush.xml.iface has got response X-Connection=close
and X-Connection-reason=duplicate without any message on redirection to login page.

For web.xml settings changed to

<context-param>
<param-name>org.icefaces.disableDefaultErrorPopups</param-name>
<param-value>true</param-value>
</context-param>

only standard ajax boxes with "User Session Expired" and warnBeforeSessionExpiry appears.
... not any redirection to redirectOnExceptionMapping as expected.

Above solution also do not catch this kind of errors and small error box appears

at org.apache.myfaces.view.facelets.compiler.CheckDuplicateIdFaceletUtils.checkIds(CheckDuplicateIdFaceletUtils.java:89)
at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.saveView(DefaultFaceletsStateManagementStrategy.java:663)
at org.apache.myfaces.application.StateManagerImpl.saveView(StateManagerImpl.java:213)
at javax.faces.application.StateManager.getViewState(StateManager.java:262)
at org.icefaces.impl.context.DOMPartialViewContext.renderState(DOMPartialViewContext.java:740)
at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:300)
at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:516)