对等与服务器客户端进行实时游戏

Question

I'm building a game that need real time sync between the users, currently I'm using tcp with no delay and its not fast enough.

the game supports 15 concurrent users, the server send the data to the users each 20 milliseconds if it have any thing to send, the data that being sent is max of 400 bytes for 1 user and the others send 30 bytes, the users send to the server their data every 50 milliseconds.

while thinking about a solution i thought why not send the server each user connection data, he will send them back the "others" connection data and while the game running each user will send directly to all the other users his current information using udp .

the second approach is keeping the current server client way and changing from tcp to udp

what will be faster? and will it make any difference from the current tcp client server speed?

Answer 1

UDP will not necessarily be faster in a sense... though it will help speed things up. UDP doesn't consider whether the packet reaches the destination. Instead of waiting for the packet to reach the destination before sending more data, it will keep on sending as fast as possible. If you want a real-time game that isn't turn-based, then you should try UDP.

Answer 2

This depends on the type of game. Usually server client (with UDP) is used because the client is untrustworthy (can be modified to cheat.)

UDP will only be faster if the client or servet has a bad internet connection that drops packets. This is because of the TCP retrying. Please note you will lose data.