Program.cs

using net;

var version = "v1.3";

var options = CommandLineOptions.Parse(args, version);
if (options.ShouldExit)
{
    return;
}

var builder = WebApplication.CreateBuilder(args);
builder.WebHost.ConfigureKestrel(opt =>
{
    opt.ListenAnyIP(options.Port);
});

var app = builder.Build();

// 错误处理
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/error");
}

app.MapGet("/error", () =>
    Results.Text("Internal Server Error", "text/plain"));

var netstat = new NetworkStats();

app.MapGet("/api/status", (HttpContext ctx) =>
{
    ctx.Response.Headers["Cache-Control"] = "no-store";
    ctx.Response.Headers["X-Content-Type-Options"] = "nosniff";

    string clientIp = "unknown";
    if (ctx.Request.Headers.TryGetValue("X-Forwarded-For", out var xff))
    {
        clientIp = xff.ToString().Split(',')[0].Trim();
    }
    else
    {
        clientIp = ctx.Connection.RemoteIpAddress?.ToString() ?? "unknown";
    }

    var response = new
    {
        version,
        server_time = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss.fff 'UTC'"),
        client_ip = clientIp,
        network_stats = netstat.GetJsonData()
    };

    return Results.Json(response);
});

app.MapGet("/", (HttpContext ctx) =>
{
    ctx.Response.Headers["Cache-Control"] = "no-store";
    ctx.Response.Headers["X-Content-Type-Options"] = "nosniff";

    var html = StatusPageBuilder.Build(
    ctx,
    version,
    netstat,
    options.FooterHtml
    );


    return Results.Text(html, "text/html");
});

app.Run();