Current final tweaks to Shooter Game Mode

Config/DefaultEngine.ini

@@ -179,6 +179,10 @@ DefaultBroadphaseSettings=(bUseMBPOnClient=False,bUseMBPOnServer=False,bUseMBPOu
 MinDeltaVelocityForHitEvents=0.000000
 ChaosSettings=(DefaultThreadingModel=TaskGraph,DedicatedThreadTickMode=VariableCappedWithTarget,DedicatedThreadBufferMode=Double)
 
+[URL]
+DefaultPort=7777
 
 [CoreRedirects]
-+PropertyRedirects=(OldName="/Script/FPSTemplate.CommandLineArgs.Arguments",NewName="/Script/FPSTemplate.CommandLineArgs.CmdArguments")
++EnumRedirects=(OldName="/Script/FPSTemplate.EvalidationError",NewName="/Script/FPSTemplate.EValidationError")
++FunctionRedirects=(OldName="/Script/FPSTemplate.GameLiftValidators.LogValidataErrorMessage",NewName="/Script/FPSTemplate.GameLiftValidators.LogValidationErrorMessage")
+;+PropertyRedirects=(OldName="/Script/FPSTemplate.CommandLineArgs.Arguments",NewName="/Script/FPSTemplate.CommandLineArgs.CmdArguments")

FPSTemplate.uproject

@@ -53,6 +53,10 @@
 		{
 			"Name": "PerforceSourceControl",
 			"Enabled": false
+		},
+		{
+		"Name": "GameLiftPlugin",
+		"Enabled": true
 		}
 	]
 }

Source/FPSTemplate/FPSTemplate.Build.cs

@@ -1,6 +1,8 @@
 // Copyright Epic Games, Inc. All Rights Reserved.
 
+using System.IO;
 using UnrealBuildTool;
+using System.Linq;
 
 public class FPSTemplate : ModuleRules
 {
@@ -8,9 +10,24 @@ public class FPSTemplate : ModuleRules
 	{
 		PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
 	
-		PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "EnhancedInput", "PhysicsCore" });
+		PublicDependencyModuleNames.AddRange(new string[]
+		{
+			"Core", 
+			"CoreUObject", 
+			"Engine", 
+			"InputCore", 
+			"EnhancedInput", 
+			"PhysicsCore", 
+			"OpenSSL"
+		});
 
-		PrivateDependencyModuleNames.AddRange(new string[] { "GameplayTags", "Slate", "SlateCore" });
+		PrivateDependencyModuleNames.AddRange(new string[]
+		{
+			"GameplayTags", 
+			"Slate", 
+			"SlateCore", 
+			"OpenSSL",
+		});
 
 		//  Adds in the plugin for GameLiftServerSDK if it is the server build.
 

Source/FPSTemplate/Private/Game/ShooterGameMode.cpp

@@ -1,24 +1,22 @@
 // Fill out your copyright notice in the Description page of Project Settings.
 
-
 #include "Game/ShooterGameMode.h"
-
-#include "DSP/BufferDiagnostics.h"
-#include "UObject/ConstructorHelpers.h"
-#include "Kismet/GameplayStatics.h"
-
-#if WITH_GAMELIFT
+#include "GenericPlatform/GenericPlatformMisc.h"
+#include "Containers/UnrealString.h"
+#include "GameLiftClpTypes.h"
+#include "GameLift/GameLiftClp.h"
+#include "openssl/sha.h"
+#include "GameLiftServerSDK.h"
 #include "GameLiftServerSDKModels.h"
-#endif
 
-#include "GenericPlatform/GenericPlatformOutputDevices.h"
-#include "Misc/TypeContainer.h"
 
-DEFINE_LOG_CATEGORY(LogShooterGameMode)
+
+DEFINE_LOG_CATEGORY(LogShooterGameMode);
+
+//  Function implementations.
 
 AShooterGameMode::AShooterGameMode()
 {
-	UE_LOG(LogShooterGameMode, Log, TEXT("Initializing ShooterGameMode..."));
 }
 
 void AShooterGameMode::BeginPlay()
@@ -29,170 +27,168 @@ void AShooterGameMode::BeginPlay()
 #endif
 }
 
-#if WITH_GAMELIFT
-
-// ReSharper disable once CppMemberFunctionMayBeConst - cannot be const due to FCommandLine::Get() and UE_LOG with non-const log category
-bool AShooterGameMode::SetParametersFromCommandLine(FServerParameters& OutServerParameters,
-                                                    FProcessParameters& OutProcessParameters)
+void AShooterGameMode::InitGame(const FString& MapName, const FString& Options, FString& ErrorMessage)
 {
-	bool bCriticalFault = false;
+	Super::InitGame(MapName, Options, ErrorMessage);
+	CachedCommandLine = FCommandLine::Get();
 	
-	FString CommandLine = FCommandLine::Get();
-	UE_LOG(LogShooterGameMode, Log, TEXT(">>> Command Line: %s"), *CommandLine);
-	
-	//  Checks if param exists (returns bool)
-	
-	// AuthToken returned from the "aws gamelift get-compute-auth-token" API.  Note this will expire and require a new call to the API after 15 minutes.
-	bCriticalFault |= ValidateServerParameters(CommandLine, TEXT("authtoken"),OutServerParameters.m_authToken);
-
-	//  The Host/compute-name of the GameLift Anywhere instance
-	bCriticalFault |= ValidateServerParameters(CommandLine, TEXT("hostid"),OutServerParameters.m_hostId);
-	
-	//  The AnywhereFleet ID.
-	bCriticalFault |= ValidateServerParameters(CommandLine, TEXT("fleetid"),OutServerParameters.m_fleetId);
-	
-	//  The WebSocket URL (GameLiftServiceSdkEndpoint)
-	bCriticalFault |= ValidateServerParameters(CommandLine, TEXT("websocketurl"),OutServerParameters.m_webSocketUrl);
-	
-	//  The port being used, uses UE system default if not entered as a switch
-	OutProcessParameters.port = FURL::UrlConfig.DefaultPort;
-	FParse::Value(*CommandLine, TEXT("port="), OutProcessParameters.port);
-	
-	LogServerSummary(OutServerParameters,OutProcessParameters);
-	
-	return bCriticalFault;
-}	
-
-void AShooterGameMode::LogServerParameters(const FServerParameters& InServerParameters)
-{
-	//  Log Server Parameters
-	UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_YELLOW);
-	UE_LOG(LogShooterGameMode, Log, TEXT(">>>> WebSocket URL: %s"), *InServerParameters.m_webSocketUrl);
-	UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Fleet ID: %s"), *InServerParameters.m_fleetId);
-	UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Process ID: %s"), *InServerParameters.m_processId);
-	UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Host ID (Compute Name): %s"), *InServerParameters.m_hostId);
-	UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Auth Token: %s"), *InServerParameters.m_authToken);
-	//		UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Aws Region: %s"), *ServerParameters.m_awsRegion);
-	//		UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Access Key: %s"), *ServerParameters.m_accessKey);
-	//		UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Secret Key: %s"), *ServerParameters.m_secretKey);
-	//		UE_LOG(LogShooterGameMode, Log, TEXT(">>>> Session Token: %s"), *ServerParameters.m_sessionToken);
-	UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_NONE);
-}
-
-void AShooterGameMode::SetProcessIdOnServerParameters(FServerParameters& OutServerParameters)
-{
-	// The PID of the running process
-#if PLATFORM_WINDOWS
-	OutServerParameters.m_processId = FString::Printf(TEXT("%d"), GetCurrentProcessId());
-#else
-	OutServerParameters.m_processId = FString::Printf(TEXT("%d"), FGenericPlatformProcess::GetCurrentProcessId());
-#endif
-}
-
-bool AShooterGameMode::ValidateServerParameters(const FString& CommandLine, const FString& ParameterName,
-	FString& OutValue, const bool bCritical)
-{
-	if (!FParse::Value(*CommandLine, *FString::Printf(TEXT("%s="), *ParameterName), OutValue))
+	const FPortResult PortResult = cmdlineparser::details::GetConfiguredOrDefaultPort(CachedCommandLine, TEXT("port"));;
+	if (PortResult.bUsedDefaultPort)
 	{
-		UE_LOG(LogShooterGameMode, Warning, TEXT("-%s not found"), *ParameterName);
-		return bCritical;
+		UE_LOGFMT (LogShooterGameMode, Warning, "{0}", PortResult.WarningMessage);
+	}
+	
+	GameLiftConfig.ServerPort = PortResult.Port;
+	if (FParse::Param(*CachedCommandLine, TEXT("glAnywhereFleet")))
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, "Fleet type: Anywhere");
+		GameLiftConfig.bIsAnywhereFleet = true;
+		GameLiftConfig.bAllOptionsFound = GetAnywhereFleetParameters(CachedCommandLine);
+		LogAnywhereFleetParameters();
+	}
+	else
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, "Fleet type: EC2");
+		// TODO: EC2 configuration
 	}
-	return false;
 }
 
-void AShooterGameMode::LogServerSummary(const FServerParameters& InServerParameters,
-	const FProcessParameters& InProcessParameters)
+FString AShooterGameMode::GetSHA256Hash(const FString& InString)
 {
-	UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_YELLOW);
-	UE_LOG(LogShooterGameMode, Log, TEXT("=== SERVER STARTUP SUMMARY ==="));
-	UE_LOG(LogShooterGameMode, Log, TEXT("Port: %d"), InProcessParameters.port);
 	
-	// Inline validation of ServerParams
-	bool bAllValid =	!InServerParameters.m_authToken.IsEmpty() &&
-						!InServerParameters.m_hostId.IsEmpty() &&
-						!InServerParameters.m_fleetId.IsEmpty() &&
-						!InServerParameters.m_webSocketUrl.IsEmpty();
+	if (InString.IsEmpty()) 
+		return TEXT("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855");
 
-	UE_LOG(LogShooterGameMode, Log, TEXT("All Anywhere params: %s"), 
-		   bAllValid ? TEXT("VALID ✓") : TEXT("MISSING ❌"));
-	UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_NONE);
+	FSHA256Signature Hash;
+	
+	// Use OpenSSL to compute the SHA-256 hash
+	
+	FTCHARToUTF8 Utf8(InString);
+	const uint8* Bytes = reinterpret_cast<const uint8*>(Utf8.Get());
+	uint32 Length = Utf8.Length();
+	
+	
+	SHA256_CTX Sha256Context;
+	SHA256_Init(&Sha256Context);
+	SHA256_Update(&Sha256Context, Bytes,Length);
+	SHA256_Final(Hash.Signature, &Sha256Context);
+	
+	return Hash.ToString();
 }
 
-void AShooterGameMode::BindGameLiftCallbackFunctions(FProcessParameters& ProcessParameters, FGameLiftServerSDKModule& GameLiftSdkModule)
+void AShooterGameMode::InitGameLift()
 {
-	// Implement callback function onStartGameSession
-	// GameLift sends a game session activation request to the game server
-	// and passes a game session object with game properties and other settings.
-	// Here is where a game server takes action based on the game session object.
-	// When the game server is ready to receive incoming player connections,
-	// it invokes the server SDK call ActivateGameSession().
+#if WITH_GAMELIFT
+	UE_LOGFMT(LogShooterGameMode, Log, "Calling InitGameLift...");
 	
+	//  Get the module first
+	FGameLiftServerSDKModule* GameLiftSdkModule = &FModuleManager::LoadModuleChecked<FGameLiftServerSDKModule>("GameLiftServerSDK");
+	FGameLiftGenericOutcome InitSdkOutcome;
 
-	ProcessParameters.OnStartGameSession.BindLambda([this, &GameLiftSdkModule](Aws::GameLift::Server::Model::GameSession InGameSession)
+	UE_LOGFMT(LogShooterGameMode, Log, "Initializing the GameLift Server...");
+	if (GameLiftConfig.bIsAnywhereFleet)
 	{
-		FString GameSessionId = FString(InGameSession.GetGameSessionId());
-		UE_LOG(LogShooterGameMode, Log, TEXT("GameSession Initializing: %s"), *GameSessionId);
-		FGameLiftGenericOutcome ActivateGameSessionOutcome = GameLiftSdkModule.ActivateGameSession();
-		if (ActivateGameSessionOutcome.IsSuccess())
-		{
-			UE_LOG(LogShooterGameMode, Log, TEXT("Activate GameSession successful"));
-		}
-		else
-		{
-			const FGameLiftError& Error = ActivateGameSessionOutcome.GetError();
-			UE_LOG(LogShooterGameMode, Error, TEXT("ActivateGameSession() failed.  Error: %s"), Error.m_errorMessage.IsEmpty() ? TEXT("Unknown Error") : *Error.m_errorMessage);
-			FPlatformMisc::RequestExit(true);
-		}
-	});
+		//  Define the server parameters for an Anywhere fleet.  These are not needed for a GameLift managed EC2 fleet.
+		FServerParameters ServerParametersForAnywhere;
 
-	ProcessParameters.OnTerminate.BindLambda([this, &GameLiftSdkModule]()
+		uint32 PID = FPlatformProcess::GetCurrentProcessId();
+		FString PIDString = FString::FromInt(static_cast<int32>(PID));
+		
+		UE_LOGFMT(LogShooterGameMode, Log, "Configuring server parameters for Anywhere...");
+		//  If AnywhereFleets are being used load the command line arguments parsed earlier.
+		ServerParametersForAnywhere.m_webSocketUrl = TCHAR_TO_UTF8(*GameLiftConfig.WebSocketUrlResult.Value);
+		ServerParametersForAnywhere.m_fleetId = TCHAR_TO_UTF8((*GameLiftConfig.FleetIdResult.Value));
+		ServerParametersForAnywhere.m_hostId = TCHAR_TO_UTF8(*GameLiftConfig.HostIdResult.Value);
+		ServerParametersForAnywhere.m_processId = PIDString;
+		ServerParametersForAnywhere.m_authToken = TCHAR_TO_UTF8(*GameLiftConfig.AuthTokenResult.Value);
+		LogServerParameters(ServerParametersForAnywhere);
+		
+		//  InitSDK will establish a local connection with GameLift's agent to enable further communication.
+		InitSdkOutcome = GameLiftSdkModule->InitSDK(ServerParametersForAnywhere);
+	}
+	else
 	{
-		FGameLiftGenericOutcome ProcessEndingOutcome = GameLiftSdkModule.ProcessEnding();
-		FGameLiftGenericOutcome DestroyOutcome = GameLiftSdkModule.Destroy();
-		if (ProcessEndingOutcome.IsSuccess() && DestroyOutcome.IsSuccess())
-		{
-			UE_LOG(LogShooterGameMode, Log, TEXT("Server process ending successfully"));
-			FPlatformMisc::RequestExit(false);
-		}
-		else
-		{
-			if (!ProcessEndingOutcome.IsSuccess())
-			{
-				const FGameLiftError& Error = ProcessEndingOutcome.GetError();
-				UE_LOG(LogShooterGameMode, Error, TEXT("ProcessEnding() failed.  Error: %s"), Error.m_errorMessage.IsEmpty() ? TEXT("Unknown Error") : *Error.m_errorMessage);
-			}
-			if (!DestroyOutcome.IsSuccess())
-			{
-				const FGameLiftError& Error = DestroyOutcome.GetError();
-				UE_LOG(LogShooterGameMode, Error, TEXT("Destroy() failed. Error: %s"), Error.m_errorMessage.IsEmpty() ? TEXT("Unknown error") : *Error.m_errorMessage);
-			}
-			FPlatformMisc::RequestExit(true);
-		}
-	});
+		InitSdkOutcome = GameLiftSdkModule->InitSDK();
+	}
 	
-	ProcessParameters.OnHealthCheck.BindLambda([=]()
+	if (InitSdkOutcome.IsSuccess())
 	{
-		return true;
-	});
+		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_GREEN);
+		UE_LOG(LogShooterGameMode, Log, TEXT("GameLift InitSDK succeeded!"));
+		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_NONE);
+	}
+	else
+	{
+		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_RED);
+		UE_LOG(LogShooterGameMode, Log, TEXT("ERROR: InitSDK failed : ("));
+		FGameLiftError GameLiftError = InitSdkOutcome.GetError();
+		UE_LOG(LogShooterGameMode, Log, TEXT("ERROR: %s"), *GameLiftError.m_errorMessage);
+		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_NONE);
+		return;
+	}
 		
-	// Here, the game server tells GameLift where to find game session Log files.
-	// At the end of a game session, GameLift uploads everything in the specified
-	// location and stores it in the cloud for access later.
+	ProcessParameters = MakeShared<FProcessParameters>();
+	//When a game session is created, Amazon GameLift Servers sends an activation request to the game server and passes along the game session object containing game properties and other settings.
+	//Here is where a game server should take action based on the game session object.
+	//Once the game server is ready to receive incoming player connections, it should invoke GameLiftServerAPI.ActivateGameSession()
+	// ReSharper disable once CppPassValueParameterByConstReference - not safe to do with async lambdas
+	ProcessParameters->OnStartGameSession.BindLambda([=](Aws::GameLift::Server::Model::GameSession InGameSession)
+    {
+		const FString GameSessionId = FString(InGameSession.GetGameSessionId());
+        UE_LOG(LogShooterGameMode, Log, TEXT("GameSession Initializing: %s"), *GameSessionId);
+        GameLiftSdkModule->ActivateGameSession();
+    });
 
-	TArray<FString> LogFiles;
-	FString LogDirectory =FPaths::ProjectSavedDir() / TEXT("Logs");
-	FString LogFile = LogDirectory / TEXT("GameLiftServer.log");
-	LogFiles.Add(LogFile);
+    //OnProcessTerminate callback. Amazon GameLift Servers will invoke this callback before shutting down an instance hosting this game server.
+    //It gives this game server a chance to save its state, communicate with services, etc., before being shut down.
+    //In this case, we simply tell Amazon GameLift Servers we are indeed going to shut down.
+	ProcessParameters->OnTerminate.BindLambda([=]()
+    {
+		UE_LOG(LogShooterGameMode, Log, TEXT("Game Server Process is terminating"));
+        // First call ProcessEnding()
+        FGameLiftGenericOutcome processEndingOutcome = GameLiftSdkModule->ProcessEnding();
+        // Then call Destroy() to free the SDK from memory
+        FGameLiftGenericOutcome destroyOutcome = GameLiftSdkModule->Destroy();
+        // Exit the process with success or failure
+        if (processEndingOutcome.IsSuccess() && destroyOutcome.IsSuccess()) {
+            UE_LOG(LogShooterGameMode, Log, TEXT("Server process ending successfully"));
+        }
+        else {
+            if (!processEndingOutcome.IsSuccess()) {
+                const FGameLiftError& error = processEndingOutcome.GetError();
+                UE_LOG(LogShooterGameMode, Error, TEXT("ProcessEnding() failed. Error: %s"),
+                error.m_errorMessage.IsEmpty() ? TEXT("Unknown error") : *error.m_errorMessage);
+            }
+            if (!destroyOutcome.IsSuccess()) {
+                const FGameLiftError& error = destroyOutcome.GetError();
+                UE_LOG(LogShooterGameMode, Error, TEXT("Destroy() failed. Error: %s"),
+                error.m_errorMessage.IsEmpty() ? TEXT("Unknown error") : *error.m_errorMessage);
+            }
+        }
+		GLog->Flush();
+		FGenericPlatformMisc::RequestExit(false);
+    });
          
-	UE_LOG(LogShooterGameMode, Log, TEXT("Before Adding Log Files"));
-	ProcessParameters.logParameters = LogFiles;
-}
+    //This is the Health Check callback.
+    //Amazon GameLift Servers will invoke this callback every 60 seconds or so.
+    //Here, a game server might want to check the health of dependencies and such.
+    //Simply return true if healthy, false otherwise.
+    //The game server has 60 seconds to respond with its health status. Amazon GameLift Servers will default to 'false' if the game server doesn't respond in time.
+    //In this case, we're always healthy!
+	ProcessParameters->OnHealthCheck.BindLambda([]()
+    {
+        UE_LOG(LogShooterGameMode, Log, TEXT("Performing Health Check"));
+        return true;
+    });
 		
-void AShooterGameMode::InitiateProcessReady(FProcessParameters& ProcessParameters, FGameLiftServerSDKModule& GameLiftSdkModule)
-{
-	//  The game server calls ProcessReady() to tell Amazon GameLift Servers it's ready to host game sessions.
-	UE_LOG(LogShooterGameMode, Log, TEXT("Calling Process Ready..."));
-	FGameLiftGenericOutcome ProcessReadyOutcome = GameLiftSdkModule.ProcessReady(ProcessParameters);
+	ProcessParameters->port = GameLiftConfig.ServerPort;
+		
+	TArray<FString> Logfiles;
+	Logfiles.Add(TEXT("FPSTemplate/Saved/Log/server.log"));
+	ProcessParameters->logParameters = Logfiles;
+		
+	UE_LOGFMT(LogShooterGameMode, Log, "Calling Process Ready...");
+	FGameLiftGenericOutcome ProcessReadyOutcome = GameLiftSdkModule->ProcessReady(*ProcessParameters);
 		
 	if (ProcessReadyOutcome.IsSuccess())
 	{
@@ -207,89 +203,168 @@ void AShooterGameMode::InitiateProcessReady(FProcessParameters& ProcessParameter
 		FGameLiftError ProcessReadyError = ProcessReadyOutcome.GetError();
 		UE_LOG(LogShooterGameMode, Log, TEXT("ERROR: %s"), *ProcessReadyError.m_errorMessage);
 		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_NONE);
+		return;
 	}
 		
-	UE_LOG(LogShooterGameMode, Log, TEXT("InitGameLift completed!"));
+	UE_LOGFMT(LogShooterGameMode, Log, "InitGameLift completed!");
+	
+#endif
 }
 
-bool AShooterGameMode::InitiateConnectionWithGameLiftAgent(FServerParameters& ServerParameters, FGameLiftServerSDKModule& GameLiftSdkModule)
+bool AShooterGameMode::GetAnywhereFleetParameters(const FString& CommandLineString)
 {
-	// InitSDK will establish a local connection with GameLift's agent to enable further communication
+	bool bAllAnywhereFleetParametersValid = true;
+	GameLiftConfig.AuthTokenResult = cmdlineparser::GetValueOfToken(CommandLineString, cmdlineparser::details::EAvailableTokens::AuthToken);
+	if (!GameLiftConfig.AuthTokenResult.bIsValid) bAllAnywhereFleetParametersValid = false;
 	
-	FGameLiftGenericOutcome InitSdkOutcome = GameLiftSdkModule.InitSDK(ServerParameters);
-	if (InitSdkOutcome.IsSuccess())
+	GameLiftConfig.FleetIdResult = cmdlineparser::GetValueOfToken(CommandLineString, cmdlineparser::details::EAvailableTokens::FleetId);
+	if (!GameLiftConfig.FleetIdResult.bIsValid) bAllAnywhereFleetParametersValid = false;
+	
+	GameLiftConfig.HostIdResult = cmdlineparser::GetValueOfToken(CommandLineString, cmdlineparser::details::EAvailableTokens::HostId);
+	if (!GameLiftConfig.HostIdResult.bIsValid) bAllAnywhereFleetParametersValid = false;
+
+	GameLiftConfig.WebSocketUrlResult = cmdlineparser::GetValueOfToken(CommandLineString, cmdlineparser::details::EAvailableTokens::WebsocketUrl);
+	if (!GameLiftConfig.WebSocketUrlResult.bIsValid) bAllAnywhereFleetParametersValid = false;
+	
+	return bAllAnywhereFleetParametersValid;
+}
+
+void AShooterGameMode::LogAnywhereFleetParameters()
+{
+	// Lambda for getting the token name from token
+	auto GetTokenName = [](const cmdlineparser::details::FParseResult& Result) -> FString
 	{
-		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_GREEN);
-		UE_LOG(LogShooterGameMode, Log, TEXT("GameLift Init SDK Succeeded"));
-		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_NONE);
+		return cmdlineparser::details::CLI_TOKENS[static_cast<int32>(Result.Token)];
+	};
+	
+	UE_LOGFMT(LogShooterGameMode, Log, "Anywhere Fleet Parameters:");
+	if (GameLiftConfig.AuthTokenResult.bIsValid)
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, "AuthToken: {0}", GetValueOrHash(GameLiftConfig.AuthTokenResult.Value));
 	}
 	else
 	{
-		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_RED);
-		UE_LOG(LogShooterGameMode, Log, TEXT("ERROR: InitSDK failed : ("));
-		FGameLiftError GameLiftError = InitSdkOutcome.GetError();
-		UE_LOG(LogShooterGameMode, Log, TEXT("ERROR: %s"), *GameLiftError.m_errorMessage);
-		UE_LOG(LogShooterGameMode, SetColor, TEXT("%s"), COLOR_NONE);
-		return true;
-	}
-	return false;
-}
-
-#endif
-
-void AShooterGameMode::InitGameLift()
-{
-#if WITH_GAMELIFT
-	UE_LOG(LogShooterGameMode, Log, TEXT("Calling InitGameLift"));
-	
-	FServerParameters ServerParameters;
-	FProcessParameters ProcessParameters;
-	
-	// Getting the module first.
-	FGameLiftServerSDKModule& GameLiftSdkModule = FModuleManager::LoadModuleChecked<FGameLiftServerSDKModule>(FName("GameLiftServerSDK"));
-
-	// Define the server parameters for a GameLift Anywhere fleet.  These are not needed for a GameLift managed EC2 fleet.
-	bool bIsAnywhereActive = false;
-	if (FParse::Param(FCommandLine::Get(), TEXT("-glAnywhere")))
-	{
-		bIsAnywhereActive = true;
+		UE_LOGFMT(
+			LogShooterGameMode, 
+			Error, 
+			"AuthToken: {0}", 
+			FString::Format(
+				*GameLiftConfig.AuthTokenResult.ErrorMessage, 
+				{
+					FStringFormatArg(GetTokenName(GameLiftConfig.AuthTokenResult)), 
+					FStringFormatArg(GetValueOrHash(GameLiftConfig.AuthTokenResult.Value)),
+				}
+			)
+		);
 	}
 	
-	if (bIsAnywhereActive)
+	if (GameLiftConfig.FleetIdResult.bIsValid)
 	{
-		UE_LOG(LogShooterGameMode, Log, TEXT("Configuring server parameters for Anywhere..."));
-		if (SetParametersFromCommandLine(ServerParameters, ProcessParameters))
-		{
-			UE_LOG(LogShooterGameMode, Error, TEXT("Critical Error, shutting server down..."));
-			FPlatformMisc::RequestExit(true);
-			return;
-		}
-		
-		SetProcessIdOnServerParameters(ServerParameters);
-		if (ServerParameters.m_processId.IsEmpty())
-		{
-			UE_LOG(LogShooterGameMode, Warning, TEXT("ProcessId is empty"));
-			FPlatformMisc::RequestExit(true);
-			return;
-		}
-		LogServerParameters(ServerParameters);
-	
-		UE_LOG(LogShooterGameMode, Log, TEXT("Initializing the GameLift Server..."));
-		
-	BindGameLiftCallbackFunctions(ProcessParameters, GameLiftSdkModule);
+		UE_LOGFMT(LogShooterGameMode, Log, "FleetId: {0}", GameLiftConfig.FleetIdResult.Value);
 	}
 	else
 	{
-		// Using EC2
-		UE_LOG(LogShooterGameMode, Log, TEXT("Using Gamelift EC2 Managed Fleet"));
-		
-		// EC2: Bind Callbacks (populates logParameters automatically)
-		BindGameLiftCallbackFunctions(ProcessParameters, GameLiftSdkModule);
-		
-		// EC2:  Empty ServerParameters = GameLift agent provies all config
-		UE_LOG(LogShooterGameMode, Log, TEXT("Initializing EC2 GameLift Server..."));
+		UE_LOGFMT(
+			LogShooterGameMode, 
+			Error, 
+			"FleetId: {0}", 
+			FString::Format(
+				*GameLiftConfig.FleetIdResult.ErrorMessage, 
+				{
+					FStringFormatArg(GetTokenName(GameLiftConfig.FleetIdResult)), 
+					FStringFormatArg(GameLiftConfig.FleetIdResult.Value)
+				}
+			)
+		);
 	}
-	if (InitiateConnectionWithGameLiftAgent(ServerParameters, GameLiftSdkModule)) return;
-	InitiateProcessReady(ProcessParameters, GameLiftSdkModule);
+	
+	if (GameLiftConfig.HostIdResult.bIsValid)
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, "HostId: {0}", GameLiftConfig.HostIdResult.Value);
+	}
+	else
+	{
+		UE_LOGFMT(
+			LogShooterGameMode, 
+			Error, 
+			"HostId: {0}", 
+			FString::Format(
+				*GameLiftConfig.HostIdResult.ErrorMessage, 
+				{
+					FStringFormatArg(GetTokenName(GameLiftConfig.HostIdResult)), 
+					FStringFormatArg(GameLiftConfig.HostIdResult.Value)
+				}
+			)
+		);
+	}
+	
+	if (GameLiftConfig.WebSocketUrlResult.bIsValid)
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, "WebSocketUrl: {0}", GameLiftConfig.WebSocketUrlResult.Value);
+	}
+	else
+	{
+		UE_LOGFMT(
+			LogShooterGameMode, 
+			Error, 
+			"WebSocketUrl: {0}", 
+			FString::Format(
+				*GameLiftConfig.WebSocketUrlResult.ErrorMessage, 
+				{
+					FStringFormatArg(GetTokenName(GameLiftConfig.WebSocketUrlResult)), 
+					FStringFormatArg(GameLiftConfig.WebSocketUrlResult.Value)
+				}
+			)
+		);
+	}
+	
+	UE_LOGFMT(LogShooterGameMode, Log, "Server Port: {0}", GameLiftConfig.ServerPort);
+	
+	if (GameLiftConfig.bAllOptionsFound)
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, "Anywhere Fleet Parameters Loaded Successfully....");
+	}
+	else
+	{
+		UE_LOGFMT(LogShooterGameMode, Error, "Anywhere Fleet Parameters Load FAILED....");
+	}
+}
+
+void AShooterGameMode::LogServerParameters(const FServerParameters& InServerParameters)
+{
+
+	UE_LOGFMT(LogShooterGameMode, Log, ">>>> WebSocket URL: {WebSocketUrl}", InServerParameters.m_webSocketUrl);
+	UE_LOGFMT(LogShooterGameMode, Log, ">>>> Fleet ID: {FleetId}", InServerParameters.m_fleetId);
+	UE_LOGFMT(LogShooterGameMode, Log, ">>>> Process ID: {ProcessId}", InServerParameters.m_processId);
+	UE_LOGFMT(LogShooterGameMode, Log, ">>>> Host ID (Compute Name): {HostId}", InServerParameters.m_hostId);
+	UE_LOGFMT(LogShooterGameMode, Log, ">>>> Auth Token: {AuthToken}", GetValueOrHash(InServerParameters.m_authToken));
+	
+	if (!InServerParameters.m_awsRegion.IsEmpty())
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, ">>>> Aws Region: {AwsRegion}", InServerParameters.m_awsRegion);
+	}
+	
+	if (!InServerParameters.m_accessKey.IsEmpty())
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, ">>>> Access Key: {AccessKey}", GetValueOrHash(InServerParameters.m_accessKey));
+	}
+	
+	if (!InServerParameters.m_secretKey.IsEmpty())
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, ">>>> Secret Key: {SecretKey}", GetValueOrHash(InServerParameters.m_secretKey));
+	}
+	
+	if (!InServerParameters.m_sessionToken.IsEmpty())
+	{
+		UE_LOGFMT(LogShooterGameMode, Log, ">>>> Session Token: {SessionToken}", GetValueOrHash(InServerParameters.m_sessionToken));
+	}
+}
+
+FString AShooterGameMode::GetValueOrHash(const FString& Value)
+{
+#if UE_BUILD_DEBUG || UE_BUILD_DEVELOPMENT
+	return Value;
+#else
+	return TEXT("HASH:") + GetSHA256Hash(Value);
 #endif
 }

Source/FPSTemplate/Private/GameLift/GameLiftClp.cpp

@@ -0,0 +1,100 @@
+#include "GameLift/GameLiftClp.h"
+
+FPortResult cmdlineparser::GetConfiguredOrDefaultPort(const FString& Token)
+{
+	return details::GetConfiguredOrDefaultPort(FCommandLine::Get(), Token);
+}
+
+FPortResult cmdlineparser::GetConfiguredOrDefaultPort(const FString& CommandLine, const FString& Token)
+{
+	return details::GetConfiguredOrDefaultPort(CommandLine, Token);
+}
+
+cmdlineparser::details::FParseResult cmdlineparser::GetValueOfToken(const FString& CommandLine, const details::EAvailableTokens Token)
+{
+	details::FParseResult Result;
+	FString ValueOfToken;
+	Result.Token = Token;
+	
+	ensure(Token != details::EAvailableTokens::Unknown);
+	ensure(Token < details::EAvailableTokens::MaxToken);
+	const bool bTokenFound = FParse::Value(
+		*CommandLine, 
+		*details::EnsureEndsWith(details::CLI_TOKENS[static_cast<int32>(Token)], 
+		TEXT("=")), 
+		ValueOfToken
+		);
+	
+	if (!bTokenFound)
+	{
+		Result.Value = FString();
+		Result.ErrorCode = details::EErrorCodes::TokenNotFound;
+		Result.bIsValid = false;
+	}
+	else
+	{
+		if (ValueOfToken.IsEmpty())
+		{
+			Result.Value = FString();
+			Result.ErrorCode = details::EErrorCodes::ValueEmpty;
+			Result.bIsValid = false;
+		}
+		else
+		{
+			if (details::DoesRegExMatch(ValueOfToken, details::REGEX_PATTERNS[static_cast<int32>(Token)]))
+			{
+				Result.ErrorCode = details::EErrorCodes::NoError;
+            	Result.bIsValid = true;	
+			}
+			else
+			{
+				Result.ErrorCode = details::EErrorCodes::FailedValidation;
+				Result.bIsValid = false;
+			}
+			Result.Value = ValueOfToken;
+		}
+	}
+	
+	ensure(Result.ErrorCode < details::EErrorCodes::MaxCode);
+	FString ErrorMessage = details::ERROR_MESSAGES[static_cast<int32>(Result.ErrorCode)];
+	FString TokenName = details::CLI_TOKENS[static_cast<int32>(Result.Token)];
+	FString Value = Result.Value;
+	Result.ErrorMessage = ErrorMessage;
+	
+	return Result;
+}
+
+
+//  cmdlineparser::Details namespace
+
+FString cmdlineparser::details::EnsureEndsWith(const FString& Token, const TCHAR* Suffix)
+{
+	return Token.EndsWith(Suffix) ? Token : Token + Suffix;
+}
+
+FPortResult cmdlineparser::details::GetConfiguredOrDefaultPort(const FString& CommandLine, const FString& Token)
+{
+	FPortResult PortResult;
+	PortResult.Port = FURL::UrlConfig.DefaultPort;
+
+	if (int32 CliPort; FParse::Value(*CommandLine, *EnsureEndsWith(Token, TEXT("=")), CliPort))
+	{
+		if (CliPort >= details::MIN_PORT && CliPort <= details::MAX_PORT)
+		{
+			PortResult.Port = CliPort;
+			PortResult.bUsedDefaultPort = false;
+			PortResult.WarningMessage = FString();
+			return PortResult;
+		}
+	}
+	PortResult.bUsedDefaultPort = true;
+	PortResult.WarningMessage = FString("Command Line Option for Port is out of ranged...  Using Default Port %s", PortResult.Port);
+	return PortResult;
+}
+
+bool cmdlineparser::details::DoesRegExMatch(const FString& Text, const FString& Pattern)
+{
+	const FRegexPattern RegexPattern(Pattern);
+	FRegexMatcher Matcher(RegexPattern, Text);
+	return Matcher.FindNext();
+}

Source/FPSTemplate/Private/GameLiftClpTypes.cpp

@@ -0,0 +1,34 @@
+#include "GameLiftClpTypes.h"
+
+const TArray<FString>& cmdlineparser::details::ERROR_MESSAGES = []() -> const TArray<FString>&
+{
+	static TArray<FString> Error_Messages;
+	Error_Messages.Add(TEXT("VALID: {0}: {1}"));
+	Error_Messages.Add(TEXT("INVALID TOKEN: [-{0}=] not found in command line arguments"));
+	Error_Messages.Add(TEXT("EMPTY VALUE: [-{0}=] found.  No value assigned"));
+	Error_Messages.Add(TEXT("VALIDATION FAILED: [-{0}=] found....  Value: [{1}]"));
+	return Error_Messages;
+}();
+
+
+const TArray<FString>& cmdlineparser::details::CLI_TOKENS = []() -> const TArray<FString>&
+{
+	static TArray<FString> Cli_Tokens;
+	Cli_Tokens.Add(TEXT("unknown")); // Unknown = 0;
+	Cli_Tokens.Add(TEXT("authtoken"));
+	Cli_Tokens.Add(TEXT("hostid"));
+	Cli_Tokens.Add(TEXT("fleetid"));
+	Cli_Tokens.Add(TEXT("websocketurl"));
+	return Cli_Tokens;
+}();
+
+const TArray<FString>& cmdlineparser::details::REGEX_PATTERNS = []() -> const TArray<FString>&
+{
+	static TArray<FString> Cli_Tokens;
+	Cli_Tokens.Add(TEXT(".*"));  // unknown = 0
+	Cli_Tokens.Add(TEXT("^[a-zA-Z0-9\\-]+$"));
+	Cli_Tokens.Add(TEXT("^[a-zA-Z0-9][a-zA-Z0-9\\-]{0,62}[a-zA-Z0-9]?$"));
+	Cli_Tokens.Add(TEXT("^[a-z]*fleet-[a-zA-Z0-9\\-]+$|^arn:.*:[a-z]*fleet\\/[a-z]*fleet-[a-zA-Z0-9\\-]+$"));
+	Cli_Tokens.Add(TEXT("^wss://[a-z0-9-]+(\\.[a-z0-9-]+)*\\.api\\.amazongamelift\\.com(:[0-9]+)?/?$"));
+	return Cli_Tokens;
+}();

Source/FPSTemplate/Public/Game/ShooterGameMode.h

@@ -3,216 +3,28 @@
 #pragma once
 
 #include "CoreMinimal.h"
+#include "GameLiftClpTypes.h"
 #include "ShooterGameModeBase.h"
-
-#if WITH_GAMELIFT
-#include "GameLiftServerSDK.h"
-#endif
-
 #include "ShooterGameMode.generated.h"
 
-
-/*
-struct FCommandLineArgs
-{
-	TMap<FString,FString> Options;
-	TArray<FString> CmdArguments;
-	
-	void ParseCommandLine()
-	{
-		const TCHAR* CommandLine = FCommandLine::Get();
-
-		//  Reserves estimated space to avoid reallocations
-		Options.Reserve(10);
-		CmdArguments.Reserve(10);
-		
-		FString Key, Value, Token;
-		FString FlagName = FString(TEXT(""));
-		while (FParse::Token(CommandLine, Token, true))
-		{
-			//  Check if token starts with '-'
-			if (Token.StartsWith(TEXT("-")))
-			{
-				//  Remove the leading '-' and store the flag name
-				FlagName = Token.Mid(1);
-				
-				//  If it's in the form Key=Value, split it
-				if (FlagName.Split(TEXT("="), &Key, &Value))
-				{
-					Key=Key.ToLower();
-					Value=Value.ToLower();
-					//  Normalize boolean values
-					if (Value.Equals(TEXT("true"), ESearchCase::IgnoreCase) || Value.Equals(TEXT("1")))
-					{
-						Options.Add(Key, TEXT("true"));
-					}
-					else if (Value.Equals(TEXT("false"), ESearchCase::IgnoreCase) || Value.Equals(TEXT("0")))
-					{
-						Options.Add(Key, TEXT("false"));
-					}
-					else
-					{
-						Options.Add(Key, Value);
-					}
-				}
-				else
-				{
-					// Bare flag (for 
-					// example -Debug or -NoSound)
-					
-					//  The convention is flags starting with "No" are false
-					if (FlagName.StartsWith(TEXT("No")) && FlagName.Len() > 2)
-					{
-						Key = FlagName.Mid(2).ToLower();
-
-						Options.Add(Key, TEXT("false"));
-					}
-					else
-					{
-						Key = FlagName.ToLower();
-						Options.Add(Key, TEXT("true"));
-					}
-					
-					//  Also add to Arguments array for backward compatibility
-					CmdArguments.Add(FlagName);
-				}
-			}
-			else
-			{
-				CmdArguments.Add(Token);
-			}
-		}
-	}
-	
-	FString GetValueFromKey(const FString& Key, const FString& DefaultValue = TEXT("")) const
-	{
-		FString NormalizedKey = Key.ToLower();
-		const FString* ValuePtr = Options.Find(NormalizedKey);
-		return ValuePtr ? *ValuePtr : DefaultValue;
-	}
-	
-	bool TryGetValue(const FString& Key, FString& OutValue) const
-	{
-		FString NormalizedKey = Key.ToLower();
-		if (const FString* ValuePtr = Options.Find(NormalizedKey))
-		{
-			OutValue = *ValuePtr;
-			return true;
-		}
-		return false;
-	}
-	
-	FString ToString() const
-	{
-		FString Result;
-		for (const auto& Pair : Options)
-		{
-			Result += FString::Printf(TEXT("-%s=%s "), *Pair.Key, *Pair.Value);
-		}
-		for (const FString& Arg : CmdArguments)
-		{
-			Result += Arg + TEXT(" ");
-		}
-		return Result.TrimEnd();
-	}
-	
-	// Get a boolean value, returns Default if not found or invalid
-	bool GetBool(const FString& Key, bool DefaultValue = false) const
-	{
-		FString Value;
-		if (TryGetValue(Key, Value))
-		{
-			if (Value.Equals(TEXT("true"), ESearchCase::IgnoreCase) ||
-				Value.Equals(TEXT("1")) ||
-				Value.Equals(TEXT("yes"), ESearchCase::IgnoreCase))
-			{
-				return true;
-			}
-			if (Value.Equals(TEXT("false"), ESearchCase::IgnoreCase) ||
-				Value.Equals(TEXT("0")) ||
-				Value.Equals(TEXT("no"), ESearchCase::IgnoreCase))
-			{
-				return false;
-			}
-		}
-		return DefaultValue;
-	}
-
-	// Get an integer value, returns Default if not found or not numeric
-	int32 GetInt(const FString& Key, int32 DefaultValue = 0) const
-	{
-		FString Value;
-		if (TryGetValue(Key, Value))
-		{
-			return FCString::Atoi(*Value);
-		}
-		return DefaultValue;
-	}
-
-	// Get a float value
-	float GetFloat(const FString& Key, float DefaultValue = 0.0f) const
-	{
-		FString Value;
-		if (TryGetValue(Key, Value))
-		{
-			return FCString::Atof(*Value);
-		}
-		return DefaultValue;
-	}
-
-	// Get as FName (useful for modes, map names, etc.)
-	FName GetName(const FString& Key, const FName& DefaultValue = NAME_None) const
-	{
-		FString Value;
-		if (TryGetValue(Key, Value))
-		{
-			return FName(*Value);
-		}
-		return DefaultValue;
-	}
-	
-	// Set a string value (core setter used by others)
-	void SetValue(const FString& Key, const FString& Value)
-	{
-		Options.Add(Key.ToLower(), Value.ToLower());
-	}
-
-	// Set a boolean option
-	void SetBool(const FString& Key, bool bValue)
-	{
-		Options.Add(Key.ToLower(), bValue ? TEXT("true") : TEXT("false"));
-	}
-
-	// Set an integer option
-	void SetInt(const FString& Key, int32 Value)
-	{
-		Options.Add(Key.ToLower(), FString::FromInt(Value));
-	}
-
-	// Set a float option (with minimal formatting)
-	void SetFloat(const FString& Key, float Value, int32 Precision = 2)
-	{
-		FString FloatStr = FString::SanitizeFloat(Value, Precision);
-		Options.Add(Key.ToLower(), FloatStr);
-	}
-
-	// Set an FName option
-	void SetName(const FString& Key, const FName& NameValue)
-	{
-		Options.Add(Key.ToLower(), NameValue.ToString().ToLower());
-	}
-
-	// Add a bare flag (true/false toggle stored for ToString output)
-	void SetFlag(const FString& Flag, bool bEnabled = true)
-	{
-		FString Key = Flag.ToLower();
-		Options.Add(Key, bEnabled ? TEXT("true") : TEXT("false"));
-		CmdArguments.Add(Flag);  // maintain compatibility with older flag parsing
-	}
-};
-*/
 DECLARE_LOG_CATEGORY_EXTERN(LogShooterGameMode, Log, All);
 
+struct FProcessParameters;
+struct FServerParameters;
+
+struct FGameLiftConfig
+{
+	bool bIsAnywhereFleet = false;
+	bool bAllOptionsFound = false;
+	
+	int32 ServerPort = 7777;
+	
+	cmdlineparser::details::FParseResult AuthTokenResult;
+	cmdlineparser::details::FParseResult FleetIdResult;
+	cmdlineparser::details::FParseResult HostIdResult;
+	cmdlineparser::details::FParseResult WebSocketUrlResult;
+};
+
 /**
  * 
  */
@@ -220,27 +32,25 @@ UCLASS()
 class FPSTEMPLATE_API AShooterGameMode : public AShooterGameModeBase
 {
 	GENERATED_BODY()
-	
 public:
+	
 	AShooterGameMode();
 	
 protected:
 	virtual void BeginPlay() override;
+	virtual void InitGame(const FString& MapName, const FString& Options, FString& ErrorMessage) override;
 
 private:
+	FGameLiftConfig GameLiftConfig;
+	FString CachedCommandLine;
 	
+	static FString GetSHA256Hash(const FString& CommandLineString);
 	void InitGameLift();
-#if WITH_GAMELIFT
-	bool SetParametersFromCommandLine(FServerParameters& OutServerParameters, FProcessParameters& OutProcessParameters);
-	static void LogServerParameters(const FServerParameters& InServerParameters);
-	void SetProcessIdOnServerParameters(FServerParameters& OutServerParameters);
-	bool ValidateServerParameters(const FString& CommandLine, const FString& ParameterName, FString& OutValue, const bool bCritical = true);
-	void LogServerSummary(const FServerParameters& InServerParameters, const FProcessParameters& InProcessParameters);
-	void BindGameLiftCallbackFunctions(FProcessParameters& ProcessParameters,
-	                                   FGameLiftServerSDKModule& GameLiftSdkModule);
-	void InitiateProcessReady(FProcessParameters& ProcessParameters, FGameLiftServerSDKModule& GameLiftSdkModule);
-	bool InitiateConnectionWithGameLiftAgent(FServerParameters& ServerParameters,
-	                                         FGameLiftServerSDKModule& GameLiftSdkModule);
-#endif
 	
+	bool GetAnywhereFleetParameters(const FString& CommandLineString);
+	void LogAnywhereFleetParameters();
+	static void LogServerParameters(const FServerParameters& InServerParameters);
+	static FString GetValueOrHash(const FString& Value);
+	
+	TSharedPtr<FProcessParameters> ProcessParameters;
 };

Source/FPSTemplate/Public/GameLift/GameLiftClp.h

@@ -0,0 +1,30 @@
+#pragma once
+#include "GameLiftClpTypes.h"
+#include "CoreMinimal.h"
+
+struct FPortResult
+{
+	int32 Port;
+	bool bUsedDefaultPort;
+	FString WarningMessage;
+};
+
+namespace cmdlineparser
+{
+	FPortResult GetConfiguredOrDefaultPort(const FString& Token = TEXT("port="));
+	FPortResult GetConfiguredOrDefaultPort(const FString& CommandLine, const FString& Token = TEXT("port="));
+
+	details::FParseResult GetValueOfToken(const FString& CommandLine, const details::EAvailableTokens Token);
+}
+
+namespace cmdlineparser::details
+{
+	inline static constexpr int32 MIN_PORT = 1024;
+	inline static constexpr int32 MAX_PORT = 65535;
+	inline static constexpr const TCHAR* DEFAULT_PORT_TOKEN = TEXT("port=");
+		
+	FString EnsureEndsWith(const FString& Token, const TCHAR* Suffix);
+	FPortResult GetConfiguredOrDefaultPort(const FString& CommandLine, const FString& Token);
+	bool DoesRegExMatch(const FString& Text, const FString& Pattern);
+}
+

Source/FPSTemplate/Public/GameLiftClpTypes.h

@@ -0,0 +1,37 @@
+#pragma once
+
+namespace cmdlineparser::details
+{
+	enum EAvailableTokens
+	{
+		Unknown = 0,
+		AuthToken,
+		HostId,
+		FleetId,
+		WebsocketUrl,
+		MaxToken
+	};
+	
+	enum EErrorCodes
+	{
+		NoError,
+		TokenNotFound,
+		ValueEmpty,
+		FailedValidation,
+		MaxCode
+	};
+	
+	extern const TArray<FString>& ERROR_MESSAGES;
+	extern const TArray<FString>& CLI_TOKENS;
+	extern const TArray<FString>& REGEX_PATTERNS;
+	
+	struct FParseResult
+	{
+		EAvailableTokens Token = EAvailableTokens::Unknown;
+		FString Value = FString();
+		bool bIsValid = false;
+		EErrorCodes ErrorCode = EErrorCodes::TokenNotFound;
+		FString ErrorMessage = FString();
+		
+	};
+}