[Bug 61083] New: mod_proxy_html ignoring ProxyHTMLCharsetOut

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=61083

            Bug ID: 61083
           Summary: mod_proxy_html ignoring ProxyHTMLCharsetOut
           Product: Apache httpd-2
           Version: 2.4.25
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_proxy_html
          Assignee: bugs@httpd.apache.org
          Reporter: a.suarez@defensor-and.es
  Target Milestone: ---

Created attachment 34990
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=34990&action=edit
Apache 2.4.25 trace files with proxy-html enabled and disabled

Hi,

We're upgrading a site from Apache 2.2 and just found that version 2.4 seems to
ignore the ProxyHTMLCharsetOut directive. 

Our setup:
* Fronted: SSL site on Apache 2.4.25. Output charset should be ISO-8859-1
* Backend: non-SSL site on Tomcat 8.5.6. Output charset is ISO-8859-1

Whenever we set: 

SetOutputFilter        proxy-html
ProxyHTMLCharsetOut    ISO-8859-1

the output charset is always UTF-8; if SetOutputFilter is commented out, then
the output charset is ISO-8859-1 as expected.

This used to work fine on version 2.2. Wrong behaviour was first found on
Debian 8 builtin package (version 2.4.10), but it's also happening on version
2.4.25 (downloaded as source and built with debian/rules makefile).

We've tried playing with xml2EncDefault, ProxyHTMLMeta, AddDefaultCharset and
even mod_charset_lite with no result.

Trace files (error.log) with mod-proxy enabled and disabled are attached.

Thank you in advance. Best regards,

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[Bug 61083] mod_proxy_html ignoring ProxyHTMLCharsetOut

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=61083

Nick Kew <ni...@webthing.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #1 from Nick Kew <ni...@webthing.com> ---
I've just investigated this.

There is a buglet: a HEAD request will incorrectly show UTF-8.  However, a
request that returns data works just fine for me.  I'm inclined to say WONTFIX,
but now that you've pointed it out I'll add a note to the docs.

Your problem is configuration.  Instead of "SetOutputFilter", you need to use
ProxyHTMLEnable On (and have mod_xml2enc loaded) to cause mod_proxy_html to
configure i18n.  I think that highlights a docs bug, and I'm thinking about how
to add that prominently.

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