Strophe.js XMPP implementation for Drupal
Drupal 6 version by Mathieu - http://drupal.org/user/378820
Drupal 7 experiment by Hongpong - http://drupal.org/user/60005
* http://github.com/HongPong/Drupal-Strophe
* For Drupal 7 branches:
* https://github.com/HongPong/Drupal-Strophe/tree/7.x-1.x
* https://github.com/HongPong/Drupal-Ejabberd-Auth/tree/7.x-1.x

-- SUMMARY --

Brings all XMPP wonders to Drupal, interacting with user via javascript and plain old HTTP.
Strophe javascript library is used for handling all javascript gears :
http://code.stanziq.com/strophe/

-- REQUIREMENTS --
XMPP server with http-binding is the same domain as the Drupal web site.
Development is done with Ejabberd and its modules:
 * mod_muc
 * mod_http_bind

With the Drupal's module ejabberd_auth, drupal can provides users to ejabberd :
http://github.com/athoune/Drupal-Ejabberd-Auth

-- CONFIGURATION --

You have to choose a domain for your xmpp server. It may be a real domain, if you 
want to use classical xmpp client, or a fake one if you only want to use it 
inside Drupal.

 * Ejabberd
Install and configure an Ejabberd with Drupal authentification.

Set your domain. Here, I use a fake domain : tchat.tld

8<------------------------------------------------------

%% Hostname
{hosts, ["localhost", "tchat.tld"]}.

------------------------------------------------------>8

Configure http_bind: 

8<------------------------------------------------------

{5280, ejabberd_http, [
       http_bind,
       http_poll,
       web_admin,
       ]}
]}.

------------------------------------------------------>8

And load the module in the right place, in the modules block, near the end of the 
config file.

Be careful with the ending comma.

8<------------------------------------------------------

{mod_http_bind,  []},

------------------------------------------------------>8

Restart ejabberd. If you try to connect with a web browser to 
http://myserver:5280/http-bind
you should see :

8<------------------------------------------------------
Ejabberd mod_http_bind v1.2

An implementation of XMPP over BOSH (XEP-0206)
------------------------------------------------------>8

http bind may not work with packaged version, use the source to compile a fresh ejabberd.

 * Web server
Use proxy on your web server (apache, lighttpd ...) to provide /http-bind in the same 
address as your website. Be careful with open proxy.

 * Apache2
Here is an Apache2 configuration example :

8<------------------------------------------------------

ProxyVia on
ProxyRequests off
ProxyPreserveHost on
<Proxy *>
	Order deny,allow
	Allow from all
</Proxy>

ProxyPass /http-bind http://127.0.0.1:5280/http-bind
ProxyPassReverse /http-bind http://127.0.0.1:5280/http-bind

------------------------------------------------------>8

Restart Apache. You should see the debug page on http://myserver/http-bind

 * lighttpd
Here is a lighttpd configuration example :
8<------------------------------------------------------

$HTTP["url"] =~ "^/http-bind" {
                proxy.server = ("" => (
                        ("host" => "127.0.0.1", "port" => 5280)
                ))
        }

------------------------------------------------------>8

 * Drupal

Go to /admin/settings/strophe to set your XMPP domain, and debug settings.

Put chat block where you want on your website.

In your theme, you should have something like :
8<------------------------------------------------------

#tchat {
	overflow: auto;
	height: 100px;
	border: thin solid black ;
}

------------------------------------------------------>8

For now, you have to use clean url.

-- USAGE --

Strophe use sub modules: strophe_muc and strophe_chat. Muc is for Multi User Chatroom, 
and strophe_chat is a one to one discussion. With Ejabberd external auth, you don't 
have any user, so, every rosters are empty. 

For handling user presence, a simple chatroom is used, every user join this room, and
you can display it or just use it for connection status.

The strophe_MUC module provides two blocks, one for the presence list, the other for 
the chatroom. If you want, presence list can be used as a starting point for a 
private discussion.

The strophe_Chat module provide one page, for a one to one discussion. The easiest 
way is to use presence list to trigger a discussion.

-- FRAMEWORK --
Strophe module is not a gtalk clone, it's a framework with usable features. You can use 
the power of xmpp and javascript with it. Event or query can be send throw XMPP. I 
click somewhere on my browser, something will happening on my correspondent's browser. 
I can ask query, and handling answer too.

The Strophe Javascript framework was build to handle chess party.

Psi is ugly xmpp client, but its XML console is priceless.
http://psi-im.org/

-- BUG --

Strange bug with direct chat on ejabberd 2.1.6, but it works well on 2.1.5. Weirds.

-- LATER --
 * Pubsub
 * Chat as a popup, everywhere.

-- CONTACT --
Mathieu - http://drupal.org/user/378820