Topic: Reverse Proxy with mod_proxy_html: Charset problems

[derQ]

Hello,

I've installed a Apache 2.4.4 (win32) environment which is acting as a reverse proxy (mod_proxy and mod_proxy_html with mod_xml2enc)

The binary is from here. http://www.apachelounge.com/viewtopic.php?p=23902

We need mod_proxy_html because there have to be links to be fixed from the proxied content.

The proxy is functional and the sites are displayed nearly correct.
We are in germany and so we need the german "Umlauts".

And there is the problem:

On some sites are for instance forms. When the customers fill in umlauts there, they are transformed by the proxy (like ä=ä)

That is because the mod_proxy_html respectively mod_xml2enc is working just with UTF-8.
The affected sites are encoded in ISO-8859-1.

And here is the problem. I tried many arguments to force the proxy to use ISO like "ProxyHTMLCharsetOut *", "xml2EncDefault iso-8859-1" or "ProxyHTMLMeta On" but the problem remains.

I also wanted to transform the data back to ISO-8859-1 with mod_charset_lite but that module doesn't seem to work with proxied data.

I've read, that mod_proxy_html delegates internationalisation/charset support to mod_xml2enc since version 3.1.
Maybe this is my problem?

So I want to try an earlier version of the mod.
Can someone help me with that? I dont't have knowledge/tools to compile me the mod.
I want to try v 3.0(1) from mod_proxy_html.

Or does someone have an idea how I can solve the charset issues?

Greetings,
Dominik

[niq]

Can you post a URL where one can see an example of a page that, when transformed, shows a problem?

I expect some component in the chain is incorrectly configured. The startingpoint for a diagnosis should be to view the original (untransformed) contents.

[derQ]

I only can show you Screenshots because the reverse proxy connects customers from our campus-network to our local web-servers.

Here is one example with a form-problem. It is a phonebook-search:



I'm searching for "Müller".
Result:



This is one example.
Does this help to understand the problem?

[admin]

I do not think this helps, you already said it in the start post.

[derQ]

OK, I see.

The problem should be clear I think.
But from the internet you cannot see an example page with the problem.

Is there a place where I can find mod_proxy_html binaries for download? (win32 apache 2.4)

Maybe an old version can help.
It is worth a try I think..

[derQ]

Could it help, when I post the apache-config?
Maybe a config-issue is the cause for my problems.

[James Blond]

Sure it helps if you post your config. if you have a longer config post at pastebin.com and post here the url :)

And the binaries is at http://www.apachelounge.com/download/ ;)

[derQ]

Thank you for the reference to pastebin!

Here is the config relevant to my problem:

http://pastebin.com/s1veUF3L

Don't wonder about the VirtualHost, the productive apache hosts more than this Reverse Proxy.

So I hope that you can understand my problem and maybe can fix it?! That would be great.

[James Blond]

The first thing that I notice without any testing is that ProxyPass and ProxyPassReverse are not in the same context. Put them into the <Location containers. or all outside. But for clean overview I recommend the <Location container.

However that is not the problem

Try ProxyHTMLMeta On

Maybe xml2EncAlias