Sync http requests?

Development Programming & Scripting Multiplayer & Networking
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1

I got a CustomGameMode class:

class CLIENTSERVERTEST_API AGameModePlay : public AGameMode
{
	GENERATED_BODY()
	
public:
   AGameModePlay();

   virtual void PreLogin(const FString& Options, const FString& Address, const TSharedPtr<const FUniqueNetId>& UniqueId, FString& ErrorMessage);
   virtual void PreLogin(const FString& Options, const FString& Address, const FUniqueNetIdRepl& UniqueId, FString& ErrorMessage);
};

What i gona do is, im searching for a option to add a user check from a database inside the “virtual void PreLogin(…);” which is overwritten from the AGameMode.

void AGameModePlay::PreLogin(const FString& Options, const FString& Address, const FUniqueNetIdRepl& UniqueId, FString& ErrorMessage)
{
   FString sessionToken = ParseOption(Options, TEXT("session"));
   FString account = ParseOption(Options, TEXT("account"));
   
   UE_LOG(LogTemp, Warning, TEXT("PreLogin(2) Address='%s' sessionToken='%s' account='%s'"), *Address, *sessionToken, *account);

   // some how query db and validate ip, session and account...

   AGameMode::PreLogin(Options, Address, UniqueId, ErrorMessage);
}

Maybe first upfont question: With regards to client/server split, would it be save to add here just some nativ sql lib and query stuff? I mean, is this gamemode code anyhow part of client binary?

On other places like the basic login, i used e.g. VaRest to get a client authorized to the DB by Webserver, which i’m fine with. The VaRest works asynchron with using some request done event, so basically because TSharedRef HttpRequest = FHttpModule::Get().CreateRequest(); is working that way?

Then main question: Is there a way to do the request just synchron to have the response ready in the “::PreLogin(…)”?

2

Somebody has a concept how to do early authorization check in the preLogin?