Program interactons

[tomy108]

Hay, can anyone help me find some material on programming interactions. Example in multiplayer games, when many clients connect to one server and interact with each other, although they have different hardware, and OS. How do they sincronize, interact with each other, in popular games, how thousands of clients communicate with each other ...
I got assignment on my collage to study this topic and build a program that simulates it. I googled for material, what I found was not very useful.
Thanks for any help.

[MrViggy]

TCP/IP (http://en.wikipedia.org/wiki/TCP/IP) is one method in which many different computers (actually, electronic gadgets is probably a better identifier now-a-days) talk to each other.

Viggy

[tomy108]

Thnx, but I'm familiar with TCP/IP protocol, network communications, OSI ... I'm interested in finding material for making programs (algorithms) for servers and client that enables many users using one program with interactions. For example multiplayer games played in real time, what algorithms are used to synchronize all users, how server controls clients. I need material for massive number (>>1000) of clients. Then i need to make simple program that simulates that interactions. I need to know the principle on which it works.
Thnx anyway.