Lobby server responsible for user authentication, matching, and all features except in-game functionality.

• English (Default)
• 한국어

• Login Processing: User authentication and session management
• OAuth Support: Support for external authentication providers like Facebook, GameCenter
• Session Management: User session creation and management

• Periodic Matching Attempts: Client polls at regular intervals, matching succeeds when conditions are met
• Match Registration and Wait: Client registers for matching and waits via Redis subscription, gRPC message stream
• Redis Pub/Sub: Notify waiting users via Redis pub when next client's matching attempt succeeds

• Server Status Management: Battle server status monitoring
• Game Session Management: Game session creation and management
• Result Processing: Game result storage and statistics

• Authentication Service: User authentication processing
• Matching Service: Matching logic processing
• Game Session Manager: Game session management
• Redis Cache: Session and matching data cache

1. Match Request: Client requests with matching criteria
2. Match Search: Search for other players matching criteria
3. Match Success: Notify when conditions are met
4. Game Session Creation: Request game session creation to battle server

// Client periodically requests matching
while (!isMatched) {
    var matchResult = await lobbyClient.RequestMatch(matchCriteria);
    if (matchResult.IsSuccess) {
        // Handle match success
        break;
    }
    await Task.Delay(1000); // Wait 1 second
}

// Register for matching
await lobbyClient.RegisterForMatch(matchCriteria);

// Wait via Redis subscription
using var subscription = redisClient.Subscribe("match_notifications");
await subscription.OnMessage(async (channel, message) => {
    // Handle match success notification
});

cd Lobby
dotnet run

• appsettings.json: Default configuration
• appsettings.Release.json: Production environment configuration

Lobby/
├── Lobby.csproj           # Project file
├── appsettings.json       # Default configuration
├── appsettings.Release.json # Production configuration
├── GrpcHostedService.cs   # gRPC hosting service
├── Modules/               # Business logic modules
│   ├── Authentication/    # Authentication related
│   ├── Matching/          # Matching related
│   └── GameSession/       # Game session related
├── OAuth/                 # OAuth authentication
│   ├── ExternalProvider.cs
│   ├── ExternalProviderFacebook.cs
│   └── ExternalProviderGameCenter.cs
├── Service/               # Service layer
├── Query/                 # Data queries
├── WebAPIClient/          # Web API client
└── UnitTest/              # Unit tests

• .NET 6.0 or higher
• gRPC
• Redis
• Entity Framework Core

• gRPC communication
• Redis cache
• OAuth authentication providers
• Communication with Battle server

• Structured logging support
• Matching success rate tracking
• Authentication failure logs

• Concurrent user count
• Matching wait time
• Matching success rate
• Authentication processing time

• Battle/ - Battle server (game sessions)
• Login/ - Login server
• Cache/ - Cache server