- [socket io multi room chat](http://psitsmike.com/2011/10/node-js-and-socket-io-multiroom-chat-tutorial/)

first time :
	npm install --save express socket.io cors
	sudo npm install -g nodemon

next time :
	npm install

anytime :
	nodemon server

- [ ] don't send message to oneself
- [ ] create a room
- [ ] automatically add someone to a room
- [ ] being able to accept or refuse to be added to a room
- [ ] what to do with message not received ?

```
-> create_public_conv( room_name );
-> create_private_conv( room_name );
->   create_protected_conv( room_name );
-> create_direct_conv( room_name );

-> change_conv( room_name );

-> get_conv_history( room_name );
-> get_last_conv();

-> get_my_convs_directs( );
-> get_my_convs_rooms( );
-> get_public_convs( );

[ list     ][ create   ][ join     ]
  "directs"   . [direct]  (public and protected)
  "rooms"     . [room]
                . public
                . private
                . protected

on connection :
	get_convs_directs();
	get_convs_rooms();
	last_conv = get_last_conv();
	if (last_conv)
		get_conv_history(last_conv);


```
## todo:
- check if drop down menu works also with buttons instead of <div tabindex=0>
- add window for option when select 'room'