AActor::GetFunctionCallspace

function Engine Since 4.0

#include "GameFramework/Actor.h"

Access: public Specifiers: virtualoverride

Description

Returns a bitmask indicating where a given UFUNCTION should execute — locally, on the server, on clients, or some combination. The engine consults this before every RPC call to decide routing.

Caveats & Gotchas

• The return value is a bitmask of EFunctionCallspace values (Local, Remote, NetMulticast, etc.). Returning the wrong value from an override will silently misroute RPCs, causing functions to run on the wrong machine or not at all.
• Overriding this requires deep knowledge of UE's network call-space system. In practice almost no project code should override this; use standard UFUNCTION(Server/Client/NetMulticast) specifiers instead.

Signature

ENGINE_API virtual int32 GetFunctionCallspace( UFunction* Function, FFrame* Stack ) override;

Parameters

Name	Type	Description	Default
Function	UFunction*	The function being evaluated for call routing.	—
Stack	FFrame*	The current Blueprint call stack frame, or null when called from C++.	—

Return Type

int32

Example

Inspect call-space for a function (diagnostic use) C++

UFunction* Func = GetClass()->FindFunctionByName(TEXT("MyServerRPC"));
if (Func)
{
    int32 CallSpace = GetFunctionCallspace(Func, nullptr);
    bool bIsRemote = !!(CallSpace & FunctionCallspace::Remote);
    UE_LOG(LogTemp, Log, TEXT("IsRemoteCall: %d"), bIsRemote);
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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