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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Buffers;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Server.HttpSys;
using Microsoft.Extensions.Hosting;
using TlsFeaturesObserve.HttpSys;
HttpSysConfigurator.ConfigureCacheTlsClientHello();
var builder = WebApplication.CreateBuilder(args);
builder.WebHost.UseHttpSys(options =>
{
options.UrlPrefixes.Add("https://*:6000");
options.Authentication.Schemes = AuthenticationSchemes.None;
options.Authentication.AllowAnonymous = true;
});
var app = builder.Build();
app.Use(async (context, next) =>
{
var connectionFeature = context.Features.GetRequiredFeature<IHttpConnectionFeature>();
var httpSysPropFeature = context.Features.GetRequiredFeature<IHttpSysRequestPropertyFeature>();
// first time invocation to find out required size
var success = httpSysPropFeature.TryGetTlsClientHello(Array.Empty<byte>(), out var bytesReturned);
Debug.Assert(!success);
Debug.Assert(bytesReturned > 0);
// rent with enough memory span and invoke
var bytes = ArrayPool<byte>.Shared.Rent(bytesReturned);
success = httpSysPropFeature.TryGetTlsClientHello(bytes, out _);
Debug.Assert(success);
await context.Response.WriteAsync($"[Response] connectionId={connectionFeature.ConnectionId}; tlsClientHello.length={bytesReturned}; tlsclienthello start={string.Join(' ', bytes.AsSpan(0, 30).ToArray())}");
await next(context);
});
app.Run();
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