Low Latency and Cheatproof Event Ordering for PeertoPeer Games

Source: www.cs.uoregon.edu
Topic: Cheat

Short Desciption:
Game level cheats occur by breaking the rules of the game. For example Eve discovers that by ... them from the game. The inconsistency cheat arises from ...

 

Content Inside:
Low Latency and Cheatproof Event Ordering for PeertoPeer GamesPage 1Low Latency and Cheatproof Event Ordering forPeertoPeer GamesChris GauthierDickeyDaniel Zappala Virginia Lo and James MarrUniversity of OregonDepartment of Computer Science1202 University of OregonEugene OR 974031202{chrisg | zappala | lo | james}@cs.uoregon.eduABSTRACTWe are developing a distributed architecture for massivelymultiplayer games. In this paper we focus on designinga lowlatency event ordering protocol called NEO for thisarchitecture. Previous event ordering protocols prevent several types of cheats at the expense of operating at the latency of the slowest player. We broaden the definition ofcheating to include four common protocol level cheats anddemonstrate how NEO prevents these cheats. At the sametime NEO has a playout latency independent of networkconditions and adapts to network congestion to optimizeperformance.Categories and Subject Descriptors: C.2.4 DistributedSystems]:Distributed applications I.6.8 Types of Simulation]:GamingGeneral Terms: Algorithms Performance SecurityKeywords: lowlatency cheatproof peertopeerdistributed interactive games1. INTRODUCTIONTraditionally multiplayer games have used a client/servercommunication architecture. This architecture has the advantage that a single authority orders events resolves conflicts in the simulation acts as a central repository for dataand is easy to secure. On the other hand this architecturehas several disadvantages. First it introduces delay becausemessages between players are always forwarded through theserver. Second traffic at the server increases with the number of players creating localized congestion. Third withThis work was supported in part by the National ScienceFoundation under grant ANI9977524.Supported by an NSF Graduate Research FellowshipSupported by an NSF Research Experience for Undergraduates grantPermission to make digital or hard copies of all or part of this work forpersonal or classroom use is granted wit ...

 

 

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