How does Half life 2 handles multiplayer?

[chuawenching]

Hi there,

I am wondering what kind of technology is half life 2 using to handle networking...

I am looking into writing networking programming.. but my language is c#..

Using sockets, directplay or ???

I not sure whether how good half life 2 networking or multiplayer are, but i believe it is a mega game, should be cool!

Any tips to share how you guys handle it?

I had 1 scenario.. just say:

10 ppl playing in 1 game (internet). 5 of them use ATI Radeon 9800 pro, P4, 512 MB and broadband. The other 5 use lower graphics cards, less memory, lower processor and just 56k dial up modem. So how does you all sync the codes that makes it smooth enough.

Any tips?

Thanks.

Regards,
Chua Wen Ching