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Hello!
I have a question about the operation of online system...
Let's think that my server have a lot of functions to do in one sync or loop. And my client send a packt for he and he don't get the pack in that moment, whats hapens?
Like, if one pack doesn't arrive in the server or client, the Multisync (system what i use) has some protocol to take care of this?
And other question. Whats the better system online for the server code? Like, the client sends a byte before every pack to show what action he is sending and in the server code has a select...case to do the action?
Other... Whats the better system to organize the dates of online gamers? Its better to use a acsses db and mark like true the camp "online"?
And how works the "laucher" before the game?
And...how to encrypt the packs?
I really sorry about my little knowledge and my bad english!
I already thank you!

Anybody?

That's a lot of deep questions, too many complex questions to answer right now.

I will contribute a few answers then I will go to bed...



Two protocols; two types of packets: TCP and UDP as far as multiplayer gaming goes. TCP is reliable, UDP is unrealiable; TCP is slower, UDP is faster.

If you send the packet via UDP, it may not get to the destination. You have to assume that sometimes as a client/server, you will not receive a message you are expecting. One way to keep track of lossed packets is to schedule packet delivery. So, if a packet is sent every 5 seconds, but no packet was received in 10 seconds, the client/server must resend the same packet again and confirm receipt in message (like a ping packet)