Mailing-List: contact users-help@httpd.apache.org; run by ezmlm
Precedence: bulk
Reply-To: users@httpd.apache.org
Received-SPF: pass (athena.apache.org: domain of devraj@gmail.com designates
 209.85.217.214 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type:content-transfer-encoding;
        b=Gf/4h6xxPbE6wZoL4OVSUPtIj4V43p7tgET7qKrPVios8bHFGIZTJjsKthZyOMLIFd
         3Usrs2d8C+kKK7TQ1nn1HsZ/+MJUq4IHFAY2oUM0gru8F8Vx6Y61xMJXwqBqTU3YX9JB
         blU9P2J49brQCtlBNu6wXqEmSgmLspnF+85JM=
MIME-Version: 1.0
In-Reply-To: <edc4a741002082020g19414229i5270a1e47e8579ec@mail.gmail.com>
References: <edc4a741002080250xb49f2d0p36a9e926de2ede5a@mail.gmail.com>
	 <2e027be01002080335q1eb748abk65aa1e07ec379741@mail.gmail.com>
	 <edc4a741002082020g19414229i5270a1e47e8579ec@mail.gmail.com>
Date: Thu, 11 Feb 2010 08:47:47 +1100
Message-ID: <2d57c6571002101347q743c46deh6c5f5cff30da274a@mail.gmail.com>
From: Devraj Mukherjee <devraj@gmail.com>
To: users@httpd.apache.org
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Subject: Re: [users@httpd] Reverse Proxy incorrectly transform content

Hi Pongtawat,

We have worked on a similar issue with the Pentaho business
intelligence suite. If you are using Apache 2.2 + You can use
mob_substitute and have rules that change the domain name and fix
these issues.

I believe these issues are caused by dynamically generated URLs via
JavaScript etc.

Happy to share my configuration. Hope this helps.

On Tue, Feb 9, 2010 at 3:20 PM, Pongtawat Chippimolchai
<pongtawat.ait@gmail.com> wrote:
> Dear Tom,
> Thank you very much for clarifying this. That explains why it work correc=
tly
> if I save the page as HTML and let Tomcat serve it statically behind Apac=
he
> reverse proxy. So, there must be something wrong with XWiki apps when
> working behind Apache. I have checked the request that was send to Tomcat
> and it seems ok. So, it might be something in the header or environment?
> Thank you,
> Pongtawat
>
> On Mon, Feb 8, 2010 at 6:35 PM, Tom Evans <tevans.uk@googlemail.com> wrot=
e:
>>
>> On Mon, Feb 8, 2010 at 10:50 AM, Pongtawat Chippimolchai
>> <pongtawat.ait@gmail.com> wrote:
>> > Hello,
>> > I'm using Apache to redirect request via reverse proxy to Tomcat on po=
rt
>> > 8080. On most of the pages, it will work flawlessly. However, on some
>> > pages,
>> > it seems that Apache will incorrectly modify the HTML content (IMO, as
>> > part
>> > of URL transformation). For example the following code:
>> > <span class=3D"blog-category-level"><a
>> > href=3D"/Blog/CategoryRss?xpage=3Dplain&amp;category=3DBlog.News" titl=
e=3D"RSS">
>> > becomes:
>> > <span class=3D"blog-category-level"><a href=3D"<span
>> > class=3D"wikiexternallink"><a
>> > class=3D"wikimodel-freestanding"
>> >
>> > href=3D"http://wiki.knowledgesharing.in.th/Blog/CategoryRss?xpage=3Dpl=
ain&amp;amp;category=3DBlog.News"><span
>> >
>> > class=3D"wikigeneratedlinkcontent">http://wiki.knowledgesharing.in.th/=
Blog/CategoryRss?xpage=3Dplain&amp;amp;category=3DBlog.News</span></a></spa=
n>"
>> > title=3D"RSS">
>> > with a mysterious span code inside href attribute.
>> > FYI, the original HTML validated as XHTML 1.0 Strict.
>> > I have no idea what cause this. Please help.
>> > My setting is as follow.
>> > Apache version:
>> > I have this issue with Apache on both Ubuntu 8.04 and 9.10, i.e. the
>> > following versions:
>> > Server version: Apache/2.2.8 (Ubuntu)
>> > Server built: =A0 Nov 13 2009 21:58:02
>> > Server version: Apache/2.2.12 (Ubuntu)
>> > Server built: =A0 Nov 12 2009 22:51:51
>> > The reverse proxy is configured as follow:
>> > <VirtualHost *:80>
>> > ServerName wiki.knowledgesharing.in.th
>> > ServerAdmin "admin AT knowledgesharing DOT in DOT th"
>> > ServerSignature Email
>> > ProxyPass / http://wiki.knowledgesharing.in.th:8080/
>> > ProxyPassReverse / http://wiki.knowledgesharing.in.th:8080/
>> > <Directory />
>> > Options FollowSymLinks
>> > AllowOverride None
>> > </Directory>
>> > </VirtualHost>
>> > The site is live, so you could try it at:
>> > http://wiki.knowledgesharing.in.th/Blog/ (via Apache reverse proxy)
>> > http://wiki.knowledgesharing.in.th:8080/Blog/ (direct to Tomcat, witho=
ut
>> > reverse proxy)
>> > Thank you very much,
>> > Pongtawat
>>
>> ProxyPass and ProxyPassReverse do not modify the HTML content of the
>> page. From the docs of ProxyPassReverse:
>>
>> Only the HTTP response headers specifically mentioned above will be
>> rewritten. Apache will not rewrite other response headers, nor will it
>> rewrite URL references inside HTML pages. This means that if the
>> proxied content contains absolute URL references, they will by-pass
>> the proxy. A third-party module that will look inside the HTML and
>> rewrite URL references is Nick Kew's mod_proxy_html.
>>
>> Cheers
>>
>> Tom
>>
>> ---------------------------------------------------------------------
>> The official User-To-User support forum of the Apache HTTP Server Projec=
t.
>> See <URL:http://httpd.apache.org/userslist.html> for more info.
>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> =A0 " =A0 from the digest: users-digest-unsubscribe@httpd.apache.org
>> For additional commands, e-mail: users-help@httpd.apache.org
>>
>
>


--=20
Follow me on Twitter, http://twitter.com/mdevraj

"The secret impresses no-one, the trick you use it for is everything"
- Alfred Borden (The Prestiege)

---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
   "   from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org