Ogdc 2013 network stragegy for mmo game

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Diversão e humor Design

Network Strategy for MMO Game
Trần Như Toàn , Lead Software Engineer,
Game Studio North , VNG Corporation

 Turn-based, Real-time MMO Games
Network Game Developers
 MMO Mobile Games

35%
Game Client
(un-trusted , multitasking)
35%
Game Servers
(Overloaded ,Costly)
30%
Network
(latency , bandwidth)

OLD
Traffic of 3200 CCU:
 In: 1,53 KB/s
 Out: 325,08 KB/s

Maintain connection until time-out
• Use session for each connection
• Hold connection state in session
• Activate connection when having
any signal

Why ???
• Interrupted, even temporarily
• ISP might have intermittent
issues , router fail
• Drop in the strength of the signal

Automatically reconnect
when connection is lost
Remain user’s state
Game flow is not interrupted

Session
Game
Client
State
Data
New
Connection
Priority Message Queue

 Game flow is not interrupted
 Client games auto-reconnect
when connection lost
 Remain state of User
The complexity of the reconnection
is hidden from the developers.

Http Tunnel by-pass Firewall
Http Tunnel

Incomplete TCP disconnection occurs (e.g. disable 3g, wifi ….)
Why?How to deal with
ghosts?

Reduce the impact of pending connections
• Create scheduled task
(called Ghost Hunter)
• Check the integrity of each
connection
• Remove those that are stale

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Ogdc 2013 network stragegy for mmo game

1. Network Strategy for MMO Game Trần Như Toàn , Lead Software Engineer, Game Studio North , VNG Corporation

2. Technical Leader

6.  Turn-based, Real-time MMO Games Network Game Developers  MMO Mobile Games

7. 1 2 3Common Problems Disconnection Lag

8. 35% Game Client (un-trusted , multitasking) 35% Game Servers (Overloaded ,Costly) 30% Network (latency , bandwidth)

10. Data Protocol Combination Compress

11.

12.

13. OLD Traffic of 3200 CCU:  In: 1,53 KB/s  Out: 325,08 KB/s

14. 1 2 3Common Problems Disconnection Lag

15. Slow Connection Disconnection

16. Maintain connection until time-out • Use session for each connection • Hold connection state in session • Activate connection when having any signal

17. myPlay before

18. Why ??? • Interrupted, even temporarily • ISP might have intermittent issues , router fail • Drop in the strength of the signal

19. Disconnect protection Re-connection

20. Automatically reconnect when connection is lost Remain user’s state Game flow is not interrupted

21. Session Game Client State Data New Connection Priority Message Queue

22.  Game flow is not interrupted  Client games auto-reconnect when connection lost  Remain state of User The complexity of the reconnection is hidden from the developers.

23. Result

24. 1 2 3Common Problems Disconnection Lag

25. Ghost User Firewall

26. Block Game Port

27. Http Tunnel by-pass Firewall Http Tunnel

28. Incomplete TCP disconnection occurs (e.g. disable 3g, wifi ….) Why?How to deal with ghosts?

29. Reduce the impact of pending connections • Create scheduled task (called Ghost Hunter) • Check the integrity of each connection • Remove those that are stale

30. Summary Lag

31. Happy Gaming

Notas do Editor

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Notas do Editor