Acting like a wizard, the Samba/Ldap Installer found in http://www.majen.net/smbldap/
can install and configure Samba as a PDC with openLDAP backend. After finding useless most of the tutorials out there (including the official samba PDC howto) I found this little piece of magic that installed the Samba PDC in the edubuntu server at work. After running the script you need to install BIND9 (a dns server) and webmin (a linux administration web console) to set up a dns to point to your domain server. I still can only log in from windows as root tho; but I will work on solving that problem next week.
Another thing I will take a look at is the NTX-grp out-of-the-box solution for open-exchange, which also includes Samba as a PDC with ldap and the dns server.
Construct2 can use websockets to send and receive messages between games. By using socket-io , we can use a Node.js script as the server and my modification to the socket-io plugin for Construct2 to allow the games to synchronize data between them in real-time. There are two parts to this design: the Node.js server and the Construct2 clients (the games playing). The main part of building an online multiplayer HTML5 game is to plan: how the clients will communicate how often and what to communicate how much of the logic will go into the server and how much to the client. In my sample game, I chose to have each client own a player and have the server just relay messages: Use string messages in the form TypeOfMessage, Parameter1, Paremeter2, Parater3, etc to communicate. Have the clients send their player position about 16 times a second. Whenever their player shoots, the client needs to send a message immediately. Almost all of the game logic will...
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