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Questions tagged with Amazon GameLift

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GameLift Sample Code

Does a collection of GameLift service samples exist? I'm developing a Battle Royale game in Unity using the Unity Plugin for GameLift and I have the basics functioning.. starting with CloudFormation template deployment, FlexMatch with game session queue, and automatic backfill. Now I'm starting to build a Lobby system, where a player can create/join/apply to join/invite to join other online clients. This seems like something that should exist in sample code (CloudFormation template, Lambda files, DynamoDB tables, SNS Topic Event Handlers, etc.). Does it? I may have it built and working by the time I get a response here, but here's what I'm thinking. LobbyTable LobbyId PlayerId # lobby owner TicketId # matchmaking ticket id PlayerLobbyTable PlayerId LobbyId Lambda functions to handle setting up a table items when a player: creates a lobby # creates LobbyTable item for PlayerId as owner application/invitation is accepted # creates PlayerLobbyTable item for PlayerId leaves/booted from lobby # deletes PlayerLobbyTable item of leaving PlayerId, picks new lobby owner and assigns if anyone remains in lobby or deletes LobbyTable for LobbyId if no players remain change lobby owner # changes LobbyTable PlayerId to new lobby owner update matchmaking ticket id # when FlexMatch MatchmakingSucceeded event, add IpAddress, Port, DnsName, etc. attributes to LobbyTable item, send message to all players in lobby that the matchmaking succeeded. Thank you.
1
answers
0
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105
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asked 5 months ago

GameLiftLocal Crashes when commands are given to it

We are in the process of testing GameLift for our game. We have created an Amazon Linux 2 VM under Virtual Box and have a working sample server form Github working and also have GameLiftLocal running on the machine. We run Gamelift running the following command: ``` [ec2-user@vm_gamelift3 GameLiftLocal-1.0.5]$ java -jar GameLiftLocal.jar ``` This seems to result in a successful startup: ``` 05:22:54,823 INFO || - [SocketIOServer] main - Session store / pubsub factory used: MemoryStoreFactory (local session store only) 05:22:59,344 WARN || - [ServerBootstrap] main - Unknown channel option 'SO_LINGER' for channel '[id: 0x88185e57]' 05:22:59,353 INFO || - [SDKConnection] main - GameLift SDK server (communicates with your game server) has started on http://localhost:5757 05:22:59,390 INFO || - [SocketIOServer] nioEventLoopGroup-2-1 - SocketIO server started at port: 5757 05:22:59,450 INFO || - [SdkWebSocketServer] WebSocketSelector-13 - WebSocket Server started on address localhost/127.0.0.1:5759 05:22:59,655 INFO || - [StandAloneServer] main - GameLift Client server (listens for GameLift client APIs) has started on http://localhost:8080 05:22:59,705 INFO || - [StandAloneServer] main - GameLift server sdk http listener has started on http://localhost:5758 ``` We also get a good connection when starting up the game server sample locally. However, when we attempt to issue the local server a command, it always comes back with an exception ``` [ec2-user@vm_gamelift3 ~]$ aws gamelift create-game-session --endpoint-url http://127.0.0.1:5758 --maximum-player-session-count 2 --fleet-id fleet-123 ``` ``` An error occurred (NullPointerException) when calling the CreateGameSession operation (reached max retries: 4): ``` The server does not completely crash, but does give a warning and a call stack of the exception that was caught ``` 05:25:31,497 WARN || - [GameLiftSdkHttpHandler] GameLiftSdkHttpHandler-thread-0 - Caught exception java.lang.NullPointerException at com.amazon.gamelift.handlers.GameLiftSdkHttpHandler.validateHeaders(GameLiftSdkHttpHandler.java:84) at com.amazon.gamelift.handlers.GameLiftSdkHttpHandler.handle(GameLiftSdkHttpHandler.java:55) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79) at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:83) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:82) at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:700) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79) at sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:672) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) 05:25:31,554 WARN || - [GameLiftSdkHttpHandler] GameLiftSdkHttpHandler-thread-0 - Caught exception null ``` This exception also occurs when we just try to describe the sessions, so it seems to be any command you issue the jar on that socket. How do I resolve this so that I can get to actually testing my code? Thank you! David
2
answers
0
votes
81
views
asked 5 months ago