@anonymous-matomo-user opened this Issue on December 5th 2008

I'm using Piwik behind a Apache 2 reverse proxy.

Here is my configuration:

Internet -> Apache 2 (http, OR https) -(reverse proxying)-> lighttpd (http) hosting piwik.

Since the Piwik login page use a absolute URL for the login form, even if i access the Apache 2 reverse proxy using:


the login form action use the protocol value detected from lighttpd:


This is an issue. The solution is to add an option to disable complete URL for forms. (so that the action is just / in stead of http://piwik.domain.com.

This would allow to use different protocols between reverse proxy and actual piwik http server.
Keywords: reverse proxy login https

@robocoder commented on December 28th 2008 Contributor

Attachment: Thanks for clarifying your set-up. I've attached a sample reverse proxy configuration using mod_proxy_html to rewrite the login form's action URL. Other than masking some information about my set-up, this is the configuration I tested. It might still need a little "magic" (e.g., ProxyHTMLLinks for some legacy html elements).

@robocoder commented on February 21st 2009 Contributor


@robocoder commented on December 8th 2008 Contributor

This actually sounds like a bug in the reverse proxy.

@anonymous-matomo-user commented on December 8th 2008

Actually it is more of a feature request than a bug.

The reverse proxy can not tell the web server behind if it use http or https.
Since the web server behind the reverse proxy does not use https, but http. Piwik believe that it use http.. but for the user that see only the reverse proxy, piwik is on https.

so, with a url https://piwik.domain.com, the form created by piwik point to http://piwik.domain.com

So i'm requesting a feature that allow to disable the complete url for form, or to tell piwik that it should use https instead of http.

At the end, it the web application responsability to offer such a feature. For example, phpmyadmin allow it.

@robocoder commented on December 26th 2008 Contributor

Have you configured your reverse proxy to use

SSLProxyEngine On


@anonymous-matomo-user commented on December 27th 2008


I've just tried it, without anything else, in my Apache 2 config. It has no visible effect. After digging a little, it seems that it is needed to do reverse proxy with a https site in backend:

https -> proxy -> https

My configuration use piwik in HTTP:

https -> proxy -> http

This morning, while playing with Piwik, i've found out that Piwik worked well either in HTTP or in HTTPS. The only problem i have with HTTPS is with the login form.

The action of the login form is http://piwik.domain.fr/index.php?module=CoreHome&action= even when i'm accessing piwik in HTTPS.

Would it be a security issue to use relative URL for the login form ? Something like :


This would bypass the problem. This could be an Piwik option that enable people using https to http reverse proxy to use Piwik without problems.

@robocoder commented on February 17th 2009 Contributor

See patch

@mattab commented on February 25th 2009 Member

have committed patch from vipsoft, please close ticket if that actually fixes the bug. thanks!

@mattab commented on March 1st 2009 Member

I close it because of missing feedback; when next release is published, if you still experience the issue, please reopen the ticket.

@anonymous-matomo-user commented on March 2nd 2009

without using the provided virtualhost (that use mod_proxy_html), the patch fixe half of the problem:

when accessing to login form in https, the form is submitted over https, so the password is not sent over the network in plain text.

but once logged in, the user is redirected to the http connection (probably due to the fact that form_url hidden input is something like "http://...".)

as said before, my setup is "HTTPS ---- reverse proxy ---> HTTP".

so i leave this bug as closed... but without using mod_proxy_html, or https on the server behind the reverse proxy.. it just allow to have password protected by https

@mattab commented on March 2nd 2009 Member

landure of others, if you can think of any way to fix something in Piwik to make it work with your setup let us know by commenting here. how other php projects handle this problem for example?

@robocoder commented on May 30th 2009 Contributor

(In [1155]) fixes #691 - use relative URLs (except in Widgetize iframe & flash embed
code); refs #466 and #647 - should also resolve the reverse proxy issues

This Issue was closed on August 4th 2009
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