I have a paragraph using Freemarker and an action paragraph class.
I've recently decided to add a page redirect. I do attempt the page
redirect by accessing response object via WebContext. Everything works
fine until the redirect is actually performed.

Please note: The redirect works fine when I disable the GZip Filter.

My Code:

WebContext ctx = null;
if(MgnlContext.getInstance() instanceof WebContext)
ctx = (WebContext)MgnlContext.getInstance();

if(ctx != null) {
try {
HttpServletResponse response = (HttpServletResponse) ctx.getResponse();

if (!response.isCommitted())

{ response.reset(); response.sendRedirect(MgnlContext.getContextPath() + ContentUtil.getContentByUUID(ContentRepository.WEBSITE, redirectPage).getHandle() + "." + ServerConfiguration.getInstance().getDefaultExtension()); }

} catch (IOException ioe)

{ //TODO: handling }

}

The error:

java.lang.IllegalStateException: Failure when attempting to set
response header Content-Encoding: gzip
info.magnolia.cms.util.RequestHeaderUtil.addAndVerifyHeader(RequestHeaderUtil.java:66)
info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:101)
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:62)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:71)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:73)
info.magnolia.cms.filters.CosMultipartRequestFilter.doFilter(CosMultipartRequestFilter.java:84)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:71)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:71)
info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:61)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:71)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:71)
info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:81)
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:62)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:71)
info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:76)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:71)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:71)
info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:80)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:71)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:71)
info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:72)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:71)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:71)
info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:64)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:71)
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:97)
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:200)