Creates a console command that logs the UnrealEngine net mode for the given game instance

LogNetMode.cpp

#include "GameInstanceCommands.h"

void UGameInstanceCommands::Initialize(FSubsystemCollectionBase& Collection)
{
	Super::Initialize(Collection);
	TestCmd = IConsoleManager::Get().RegisterConsoleCommand( TEXT("LogNetMode"),
															 TEXT("Outputs the net mode to the console."),
															 FConsoleCommandDelegate::CreateUObject( this, &UGameInstanceCommands::LogNetMode ),
															 ECVF_Default );
}

void UGameInstanceCommands::Deinitialize()
{
	Super::Deinitialize();
	IConsoleManager::Get().UnregisterConsoleObject( TestCmd );
}

void UGameInstanceCommands::LogNetMode()
{
#if !UE_BUILD_SHIPPING
	UWorld* world = GetGameInstance()->GetWorldContext()->World();
	ENetMode mode = world->GetNetMode();
	UE_LOG(LogTemp, Warning, TEXT("NetMode %s"), *GetNetName(mode));
#endif
}

FString UGameInstanceCommands::GetNetName(ENetMode Mode)
{
	switch (Mode)
	{
		/** Standalone: a game without networking, with one or more local players. Still considered a server because it has all server functionality. */
		case NM_Standalone: return "Standalone";
		/** Dedicated server: server with no local players. */
		case NM_DedicatedServer: return "DedicatedServer";
		/** Listen server: a server that also has a local player who is hosting the game, available to other players on the network. */
		case NM_ListenServer: return "ListenServer";
		/**
		 * Network client: client connected to a remote server.
		 * Note that every mode less than this value is a kind of server, so checking NetMode < NM_Client is always some variety of server.
		 */
		case NM_Client: return "Client";

		case NM_MAX: return "MAX";
	}
	return "Unknown";
}

LogNetMode.h

#pragma once

#include "CoreMinimal.h"
#include "Engine/GameInstance.h"
#include "GameInstanceCommands.generated.h"

/**
 */
UCLASS()
class LEARNINGUNREAL_API UGameInstanceCommands : public UGameInstanceSubsystem
{
	GENERATED_BODY()
public:
	virtual void Initialize(FSubsystemCollectionBase& Collection) override;
	virtual void Deinitialize() override;

private:
	IConsoleCommand* TestCmd;
	void LogNetMode();
	FString GetNetName(ENetMode Mode);
};