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  3. AGameNetworkManager

AGameNetworkManager

Handles game-specific networking management (cheat detection, bandwidth management, etc.).

API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/GameFramework

Inheritance Hierarchy

References

   
Module Engine
Header /Engine/Source/Runtime/Engine/Classes/GameFramework/GameNetworkManager.h
Include #include "GameFramework/GameNetworkManager.h"

Syntax

UCLASS (Config=Game, NotPlaceable, MinimalAPI)  
class AGameNetworkManager : public AInfo

Remarks

Handles game-specific networking management (cheat detection, bandwidth management, etc.).

Variables

  Type Name Description
Public variable UProperty int32 AdjustedNetSpeed Current adjusted bandwidth per player, based on total and dynamic bandwidth
Public variable UProperty GlobalConfig float BadPacketLossThreshold If packet loss goes over this value, we have bad packet loss. Value is between 0 and 1.
Public variable UProperty GlobalConfig int32 BadPingThreshold If average ping is higher than this threshold in ms, determine the server is either delaying packets or has bad upstream.
Public variable UProperty uint32: 1 bHasStandbyCheatTriggered Used to determine whether we've already caught a cheat or not
Public variable UProperty Config uint32: 1 bIsStandbyCheckingEnabled Used to determine if checking for standby cheats should occur
Public variable UProperty GlobalConfig bool bMovementTimeDiscrepancyDetection Whether movement time discrepancy (speed hack) detection is enabled.
Public variable UProperty GlobalConfig bool bMovementTimeDiscrepancyForceCorrectionsDuringResolution Whether client moves should be force corrected during time discrepancy resolution, useful for projects that have lenient move error tolerance/ClientAuthorativePosition enabled.
Public variable UProperty GlobalConfig bool bMovementTimeDiscrepancyResolution Whether movement time discrepancy resolution is enabled (when detected, make client movement "pay back" excessive time discrepancies)
Public variable UProperty GlobalConfig bool bUseDistanceBasedRelevancy If true, actor network relevancy is constrained by whether they are within their NetCullDistanceSquared from the client's view point.
Public variable UProperty GlobalConfig float CLIENTADJUSTUPDATECOST CLIENTADJUSTUPDATECOST is the bandwidth cost in bytes of sending a client adjustment update.
Public variable UProperty GlobalConfig bool ClientAuthorativePosition If client update is within MAXPOSITIONERRORSQUARED of what the server expects then the client is authoritative on it's final position
Public variable UProperty GlobalConfig float ClientErrorUpdateRateLimit Minimum delay between the server sending error corrections to a client, in seconds.
Public variable UProperty GlobalConfig float ClientNetCamUpdateDeltaTime Minimum delay between calls to ServerUpdateCamera, in seconds.
Public variable UProperty GlobalConfig float ClientNetCamUpdatePositionLimit Camera position change limit, when exceeded allows an immediate ServerUpdateCamera call.
Public variable UProperty GlobalConfig float ClientNetSendMoveDeltaTime ClientNetSendMoveDeltaTime is the default minimum time delta of CharacterMovement client moves to the server.
Public variable UProperty GlobalConfig float ClientNetSendMoveDeltaTimeStationary ClientNetSendMoveDeltaTimeStationary is used when players are determined to not be moving or changing their view.
Public variable UProperty GlobalConfig float ClientNetSendMoveDeltaTimeThrottled ClientNetSendMoveDeltaTimeThrottled is used in place of ClientNetSendMoveDeltaTime when player count is high or net speed is low.
Public variable UProperty GlobalConfig int32 ClientNetSendMoveThrottleAtNetSpeed When player net speed (CurrentNetSpeed, based on ConfiguredInternetSpeed or ConfiguredLanSpeed) is less than or equal to this amount, ClientNetSendMoveDeltaTimeThrottled is used instead of ClientNetSendMoveDeltaTime.
Public variable UProperty GlobalConfig int32 ClientNetSendMoveThrottleOverPlayerCount When player count is greater than this amount, ClientNetSendMoveDeltaTimeThrottled is used instead of ClientNetSendMoveDeltaTime.
Public variable UProperty Config float JoinInProgressStandbyWaitTime The amount of time to wait before checking a connection for standby issues
Public variable UProperty float LastNetSpeedUpdateTime Last time AdjustedNetSpeed was updated for server (by client entering or leaving)
Public variable UProperty GlobalConfig float MaxClientForcedUpdateDuration MaxClientForcedUpdateDuration is the maximum time duration over which the server will force updates, after MAXCLIENTUPDATEINTERVAL is initially exceeded.
Public variable UProperty GlobalConfig float MaxClientSmoothingDeltaTime MaxClientSmoothingDeltaTime is the maximum delta time between server updates that clients are allowed to smooth between for position interpolation.
Public variable UProperty GlobalConfig float MAXCLIENTUPDATEINTERVAL MAXCLIENTUPDATEINTERVAL is the maximum time between movement updates from the client before the server forces an update.
Public variable UProperty GlobalConfig int32 MaxDynamicBandwidth Maximum bandwidth set per connection after splitting TotalNetBandwidth
Public variable UProperty GlobalConfig float MaxMoveDeltaTime MaxMoveDeltaTime is the default maximum time delta of CharacterMovement ServerMoves.
Public variable UProperty GlobalConfig float MAXNEARZEROVELOCITYSQUARED MAXNEARZEROVELOCITYSQUARED is the square of the max velocity that is considered zero (not corrected) in net play
Public variable UProperty GlobalConfig float MAXPOSITIONERRORSQUARED MAXPOSITIONERRORSQUARED is the square of the max position error that is accepted (not corrected) in net play
Public variable UProperty GlobalConfig int32 MinDynamicBandwidth Minimum bandwidth set per connection after splitting TotalNetBandwidth
Public variable UProperty GlobalConfig float MovementTimeDiscrepancyDriftAllowance Accepted drift in clocks between client and server as a percent per second allowed.
Public variable UProperty GlobalConfig float MovementTimeDiscrepancyMaxTimeMargin Maximum time client can be ahead before triggering movement time discrepancy detection/resolution (if enabled).
Public variable UProperty GlobalConfig float MovementTimeDiscrepancyMinTimeMargin Maximum time client can be behind.
Public variable UProperty GlobalConfig float MovementTimeDiscrepancyResolutionRate During time discrepancy resolution, we "pay back" the time discrepancy at this rate for future moves until total error is zero.
Public variable UProperty GlobalConfig float MoveRepSize Average size of replicated move packet (ServerMove() packet size) from player
Public variable UProperty Config float PercentForBadPing The percentage of clients with bad ping before triggering the standby code
Public variable UProperty Config float PercentMissingForRxStandby The percentage of clients missing RX data before triggering the standby code
Public variable UProperty Config float PercentMissingForTxStandby The percentage of clients missing TX data before triggering the standby code
Public variable UProperty GlobalConfig float ServerForcedUpdateHitchCooldown Ignore forced client movement updates when server hitch was detected within this amount of time in the past.
Public variable UProperty GlobalConfig float ServerForcedUpdateHitchThreshold Ignore forced client movement updates when server hitches for longer than this duration.
Public variable UProperty GlobalConfig float SeverePacketLossThreshold If the packet loss goes over this threshold, we have severe packet loss. Value is between 0 and 1
Public variable UProperty GlobalConfig int32 SeverePingThreshold Similar to BadPingThreshold, but used to track exceptionally bad pings.
Public variable UProperty Config float StandbyRxCheatTime The amount of time without packets before triggering the cheat code
Public variable UProperty Config float StandbyTxCheatTime The amount of time without packets before triggering the cheat code
Protected variable FTimerHandle TimerHandle_UpdateNetSpeedsTimer Handle for efficient management of UpdateNetSpeeds timer
Public variable UProperty GlobalConfig int32 TotalNetBandwidth Total available bandwidth (in bytes/sec) for listen server, split dynamically across net connections

Constructors

  Type Name Description
Public function  

AGameNetworkManager ( const FObjectInitializer& ObjectInitializer
)

  

Functions

  Type Name Description
Public function Virtual int32 @RETURN new per/client bandwidth given number of players in the game
Public function Virtual void

EnableStandbyCheatDetection ( bool bIsEnabled
)

 Standby cheat detection.
Public function Virtual Const bool  
Public function Virtual bool Returns true if we should be in low bandwidth mode
Public function Virtual Const bool  
Public function Virtual void Notifies the game code that a standby cheat was detected
Public function Virtual void

UpdateNetSpeeds ( bool bIsLanMatch
)

 Update network speeds for listen servers based on number of connected players.
Public function Virtual void Timer which calls UpdateNetSpeeds() once a second.
Public function Virtual Const bool

WithinUpdateDelayBounds ( APlayerController* PC,
float LastUpdateTime
)

  

Overridden from AActor

  Type Name Description
Public function Virtual void Allow actors to initialize themselves on the C++ side after all of their components have been initialized, only called during gameplay

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