http://docs.moodle.org/en/masquerading

$CFG->wwwroot = "http://external_public_name/estudios ";

The problem arise when url published in the reverse proxy [ /estudios ] is not the same that the url published in the internal server [ /moodle ]

Beyond this error, I think this limitation has no sense.
Why need Moodle work with absolute URLs?
Relative URLs are much more flexible than absolute ones and allow a correct work behind reverse proxy.
It must be an imperative improvement.

In addition, almost all pages work fine in my configuration, only some errors are displayed in some pages where absolute urls are bad used.

I think the errors come from the function me() and/or qualified_me() in weblib.php

http://www.apsis.ch/pound/

We got the same symptoms as described above by Rafael. The module chat wouldn't even load, giving a blank page...

We solved the issue (we havn't noticed any side effects yet) by modifing the function qualified_me() in /lib/weblib.php.

The function parses the URL from $CFG->wwwroot and uses this information together with information from $_SERVER
to build an absolute url.

Replace the function qualified_me() with the one below, and set "$CFG->using_reverseproxy = true" in your config.php.

function qualified_me() {

global $CFG;

$result = $CFG->wwwroot . me();

if( !$CFG->using_reverseproxy )
{
if (!empty($CFG->wwwroot)) { $url = parse_url($CFG->wwwroot); }

if (!empty($url['host'])) { $hostname = $url['host']; } else if (!empty($_SERVER['SERVER_NAME'])) { $hostname = $_SERVER['SERVER_NAME']; } else if (!empty($_ENV['SERVER_NAME'])) { $hostname = $_ENV['SERVER_NAME']; } else if (!empty($_SERVER['HTTP_HOST'])) { $hostname = $_SERVER['HTTP_HOST']; } else if (!empty($_ENV['HTTP_HOST'])) { $hostname = $_ENV['HTTP_HOST']; } else { notify('Warning: could not find the name of this server!'); return false; }

if (!empty($url['port'])) { $hostname .= ':'.$url['port']; } else if (!empty($_SERVER['SERVER_PORT'])) {
if ($_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443 ) { $hostname .= ':'.$_SERVER['SERVER_PORT']; }
}

if (isset($_SERVER['HTTPS'])) { $protocol = ($_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://'; } else if (isset($_SERVER['SERVER_PORT'])) { # Apache2 does not export $_SERVER['HTTPS'] $protocol = ($_SERVER['SERVER_PORT'] == '443') ? 'https://' : 'http://'; } else { $protocol = 'http://'; }

$url_prefix = $protocol.$hostname;
$result = $url_prefix . me();
}

return $result;
}

my solutions was put de same folder name in the moodle application

for example:

ProxyPass /estudios http://internal_server_name/moodle
ProxyPassReverse /estudios http://internal_server_name/moodle

i change to :

ProxyPass /estudios http://internal_server_name/estudios
ProxyPassReverse /estudios http://internal_server_name/estudios

and works, but i think the moodle don't need to have this limitation

the problem its the me() function takes varieable from $_SERVER,
and takes the worng name of moodle folder , in this case, returns /moodle/any_thing.php

so the URL http://external_public_name/moodle/any_thing.php don't exist
( this is retuned from qualified_my() )

if the me() function only returns de script name (any_thing.php), the qualified_me function
could be

$result = $CFG->wwwroot .'/'. me();

PS: i'm using moodle 1.8 with this new formslib

replace <form action="http://(internal-name)/user/editadvanced.php" method="post"
with <form action="https://(external-name)/user/editadvanced.php" method="post"
replace <form action="http://(internal-name)/blog/edit.php" method="post"
with <form action="https://(external-name)/blog/edit.php" method="post"

These were the only 2 pages that were causing problems in version 1.8.4 - user profile and blog editing pages.

open weblib.php find me() and replace

function me() {

with

function me() { return str_replace('/somefolder','',notreal_me()); }
function notreal_me() {

This renames me() to notreal_me() and then creates a new me() which replaces /somefolder with nothing..

e.g. if your reverse proxy is from xxx.com/ to yyy.com/~xxx then you replace /somefolder with /~xxx

You'll need to do this after every update of moodle you do..

thanks for the report, please test and reopen if needed!

my solution is the next:

File: /lib/formslib.php
Function: moodleform()

The code must be:

function moodleform($action=null, $customdata=null, $method='post', $target='', $attributes=null) {
if (empty($action)){ # @author: Elvira Nieto <aquesabenlasnubes@gmail.com> # $action = strip_querystring(qualified_me()); #Change it by: $action = basename($_SERVER['SCRIPT_NAME']); # The rest code will not change ..... }

Not forget that $CFG->wwwroot variable must be configured in config.php

Best Regards