Program.cs

using RealTimeChatApp.Hubs;
using RealTimeChatApp.Services;
using Microsoft.AspNetCore.ResponseCompression;

var builder = WebApplication.CreateBuilder(args);

// Add logging configuration
builder.Logging.ClearProviders();
builder.Logging.AddConsole();
builder.Logging.AddDebug();

// Add response compression for better performance
builder.Services.AddResponseCompression(opts =>
{
    opts.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(
        new[] { "application/octet-stream" });
});

// Add SignalR with configuration
builder.Services.AddSignalR(options =>
{
    options.EnableDetailedErrors = builder.Environment.IsDevelopment();
    options.MaximumReceiveMessageSize = 102400; // 100 KB
    options.StreamBufferCapacity = 10;
    options.ClientTimeoutInterval = TimeSpan.FromSeconds(60);
    options.KeepAliveInterval = TimeSpan.FromSeconds(15);
    options.HandshakeTimeout = TimeSpan.FromSeconds(15);
});

builder.Services.AddControllersWithViews();

// Add CORS for local network access
builder.Services.AddCors(options =>
{
    options.AddDefaultPolicy(policy =>
    {
        policy.SetIsOriginAllowed(origin => true) // Allow any origin for local network
              .AllowAnyHeader()
              .AllowAnyMethod()
              .AllowCredentials(); // Required for SignalR
    });
});

// Register custom services
builder.Services.AddSingleton<IMemoryStorageService, MemoryStorageService>();
builder.Services.AddSingleton<IChatRoomService, ChatRoomService>();
builder.Services.AddHostedService<RoomExpirationService>();

// Add memory cache for performance
builder.Services.AddMemoryCache();

// Add session support if needed
builder.Services.AddSession(options =>
{
    options.IdleTimeout = TimeSpan.FromHours(2);
    options.Cookie.HttpOnly = true;
    options.Cookie.IsEssential = true;
});

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
    app.UseHsts();
}
else
{
    app.UseDeveloperExceptionPage();
}

app.UseResponseCompression();
app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();
app.UseCors();
app.UseSession();
app.UseAuthorization();

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}");

// Map SignalR hub with configuration
app.MapHub<ChatHub>("/chatHub", options =>
{
    options.Transports = Microsoft.AspNetCore.Http.Connections.HttpTransportType.WebSockets |
                         Microsoft.AspNetCore.Http.Connections.HttpTransportType.LongPolling;
});

app.Run();