Escape from Tarkov

[paul-court]

Compatibility Report

• Name of the game with compatibility issues: Escape from tarkov
• Steam AppID of the game: N/A

System Information

• GPU: AMD Radeon VII
• Driver/LLVM version:
• Kernel version: 5.15
• Link to full system information report as Gist: https://gist.github.com/gargoyle/0be2e390e812d554c582fcbb9657c158
• Proton version: 6.3

I confirm:

• [X] that I haven't found an existing compatibility report for this game.
• [X] that I have checked whether there are updates for my system available.

Symptoms

BattlEye fails to decrypt packets

Reproduction

Install the game using lutris and add an environment variable for the location of the Protin BattleEye Runtime. Eg. PROTON_BATTLEYE_RUNTIME=/Games/Steam/steamapps/common/Proton BattlEye Runtime/

The game will launch OK and will fully work in offline mode - however, if you try to connect to an online game, almost everything loads just fine, but at the last part of the connection it fails with the following message in the console:-

[Exception] : IndexOutOfRangeException: Index was outside the bounds of the array.
BattlEye.BEClient.DecryptServerPacket (System.Byte[] encryptedPacket, System.Int32 encryptedPacketOffset, System.Int32 encryptedPacketLength, System.Byte[] decryptedPacket, System.Int32 decryptedPacketOffset, System.Int32& decryptedPacketLength) (at <1c6426fd8bad4799b35625de0c0bdfc9>:0)
BattlEye.BEClient.DecryptPacket (System.Byte[] encryptedPacket, System.Int32 encryptedPacketOffset, System.Int32 encryptedPacketLength, System.Byte[] decryptedPacket, System.Int32 decryptedPacketOffset, System.Int32& decryptedPacketLength) (at <1c6426fd8bad4799b35625de0c0bdfc9>:0)
EFT.World. (UnityEngine.Networking.NetworkReader reader) (at <d339040ecb3d663ef9a6166fd360bfed>:0)
EFT.SubWorld.OnDeserialize (UnityEngine.Networking.NetworkReader reader) (at <d339040ecb3d663ef9a6166fd360bfed>:0)
EFT.World. (UnityEngine.Networking.NetworkReader reader) (at <d339040ecb3d663ef9a6166fd360bfed>:0)
EFT.NetworkGame..SubWorldSpawn (UnityEngine.Networking.NetworkMessage message) (at <d339040ecb3d663ef9a6166fd360bfed>:0)
UnityEngine.Networking.NetworkConnection.HandleReader (UnityEngine.Networking.NetworkReader reader, System.Int32 receivedSize, System.Int32 channelId) (at <73d3d1767aea44aaae29ced4465f4bb5>:0)
UnityEngine.Networking.NetworkConnection.HandleBytes (System.Byte[] buffer, System.Int32 receivedSize, System.Int32 channelId) (at <73d3d1767aea44aaae29ced4465f4bb5>:0)
UnityEngine.Networking.NetworkConnection.TransportReceive (System.Byte[] bytes, System.Int32 numBytes, System.Int32 channelId) (at <73d3d1767aea44aaae29ced4465f4bb5>:0)
UnityEngine.Networking.NetworkClient.Update () (at <73d3d1767aea44aaae29ced4465f4bb5>:0)
UnityEngine.Networking.NetworkClient.UpdateClients () (at <73d3d1767aea44aaae29ced4465f4bb5>:0)
UnityEngine.Networking.NetworkIdentity.InternalUnetUpdate () (at <73d3d1767aea44aaae29ced4465f4bb5>:0)
UnityEngine.Networking.NetworkIdentity.ManualUnetUpdate () (at <73d3d1767aea44aaae29ced4465f4bb5>:0)
CustomPlayerLoopSystem.UNetUpdate.UpdateFunction () (at <d339040ecb3d663ef9a6166fd360bfed>:0)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
:UnityEngine.ILogHandler.LogException(Exception, Object)
UnityEngine.Debug:CallOverridenDebugHandler(Exception, Object)

[kisak-valve]

Hello @gargoyle, in addition to the unsupported third party launcher you're using to start Proton, mixing the BattlEye integration in Proton with non-Steam games is highly likely to fail and most likely unsupportable, but we'll need to hear from a Proton dev if there's no point in keeping an eye on this game in general.

[paul-court]

I fully understand and appreciate that, @kisak-valve.

It's probably worth double checking on the error though and not the game or launch situation. I don't know who is responsible for the code at the top of the stack trace (BattlEye.BEClient.DecryptServerPacket), but an index out of bounds exception probably shouldn't be surfacing client side - it suggests an array is being accessed without first checking its bounds.

Potentially a nasty bug.

Just want to make sure this doesn't get lost without being seen by an appropriate dev now that its been tagged with "Game compatability - Unofficial", and potentially lost in the sea of all the other issues tagged as such.

Hope this helps. Thanks again.