No owning connection for actor. Function will not be processed

Development Programming & Scripting
1

Hello. I am new to multiplayer developing and I have a problem with Client. I can’t say to Server that I want to decrease my health. If I’m a host then all works fine, but when I’m a client I get the warning:

271030-warning.png
271030-warning.png1107×44 3.3 KB

.h

	UFUNCTION()
	void TakeDamage(float damage) override;

	UFUNCTION(Server, Reliable, WithValidation)
	void Server_TakeDamage(float damage);

	UFUNCTION()
	void DecreaseHealth(float decrement);

.cpp

void ACustomCharacter::TakeDamage(float damage)
{
	if (Role < ROLE_Authority)
	{
		//Client can't call the function
		Server_TakeDamage(damage);
		GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Yellow, TEXT("Client takeDamage"));
	} else
	{
		//Server works properly
		DecreaseHealth(damage);
		GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Yellow, TEXT("Server takeDamage"));
	}
}

void ACustomCharacter::Server_TakeDamage_Implementation(float damage)
{
	DecreaseHealth(damage);
}

bool ACustomCharacter::Server_TakeDamage_Validate(float damage)
{
	return true;
}

void ACustomCharacter::DecreaseHealth(float decrement)
{
	health -= decrement;
}

What am I doing wrong? Please, help!

2

I hate to revive an old post, but did you figure this out? Or if not maybe someone can see this and chime in.

3

See this answer from.

In the function that is calling the server, use IsLocallyControlled() first to check if it’s currently controlled.

4

I was able to avoid this anoing warning, and keeping work everything as needed, by using:

  • HasAuthority() on scope that should be executed on server
  • IsLocallyControlled() for scope that should be executed on client.
    For now working good. And no more spamming warnings, that make my CPU throttle:)