feat: control SSL protocol version on tls jobs

scenarios/tls.benchmarks.yml

@@ -15,12 +15,15 @@ jobs:
       project: src/BenchmarksApps/TLS/HttpSys/HttpSys.csproj
     readyStateText: Application started.
     variables:
+      # behavioral settings
       mTLS: false # enables settings on http.sys to negotiate client cert on connections
       tlsRenegotiation: false # enables client cert validation
+      # debug settings
       certValidationConsoleEnabled: false
       httpSysLogs: false
       statsEnabled: false
-    arguments: "--urls https://{{serverAddress}}:{{serverPort}} --mTLS {{mTLS}} --certValidationConsoleEnabled {{certValidationConsoleEnabled}} --statsEnabled {{statsEnabled}} --tlsRenegotiation {{tlsRenegotiation}} --httpSysLogs {{httpSysLogs}}"
+      logRequestDetails: false
+    arguments: "--urls https://{{serverAddress}}:{{serverPort}} --mTLS {{mTLS}} --certValidationConsoleEnabled {{certValidationConsoleEnabled}} --statsEnabled {{statsEnabled}} --tlsRenegotiation {{tlsRenegotiation}} --httpSysLogs {{httpSysLogs}} --logRequestDetails {{logRequestDetails}}"
 
   kestrelServer:
     source:
@@ -29,11 +32,15 @@ jobs:
       project: src/BenchmarksApps/TLS/Kestrel/Kestrel.csproj
     readyStateText: Application started.
     variables:
+      # behavioral settings
       mTLS: false
       tlsRenegotiation: false
+      tlsProtocols: "tls12,tls13"
+      # debug settings
       certValidationConsoleEnabled: false
       statsEnabled: false
-    arguments: "--urls https://{{serverAddress}}:{{serverPort}} --mTLS {{mTLS}} --certValidationConsoleEnabled {{certValidationConsoleEnabled}} --statsEnabled {{statsEnabled}} --tlsRenegotiation {{tlsRenegotiation}}"
+      logRequestDetails: false
+    arguments: "--urls https://{{serverAddress}}:{{serverPort}} --mTLS {{mTLS}} --certValidationConsoleEnabled {{certValidationConsoleEnabled}} --tlsProtocols {{tlsProtocols}} --statsEnabled {{statsEnabled}} --tlsRenegotiation {{tlsRenegotiation}} --logRequestDetails {{logRequestDetails}}"
 
 scenarios:
 
@@ -43,12 +50,13 @@ scenarios:
     application:
       job: httpSysServer
     load:
-      job: wrk
+      job: httpclient
       variables:
         path: /hello-world
         presetHeaders: connectionclose
         connections: 32
         serverScheme: https
+        sslProtocol: tls12
 
   mTls-handshakes-httpsys:
     application:
@@ -69,6 +77,7 @@ scenarios:
         serverScheme: https
         certPath: https://raw.githubusercontent.com/aspnet/Benchmarks/refs/heads/main/src/BenchmarksApps/TLS/HttpSys/testCert.pfx
         certPwd: testPassword
+        sslProtocol: tls12
 
   tls-renegotiation-httpsys:
     application:
@@ -87,19 +96,21 @@ scenarios:
         serverScheme: https
         certPath: https://raw.githubusercontent.com/aspnet/Benchmarks/refs/heads/main/src/BenchmarksApps/TLS/HttpSys/testCert.pfx
         certPwd: testPassword
+        sslProtocol: tls12
 
 # Kestrel
 
   tls-handshakes-kestrel:
     application:
       job: kestrelServer
     load:
-      job: wrk
+      job: httpclient
       variables:
         path: /hello-world
         presetHeaders: connectionclose
         connections: 32
         serverScheme: https
+        sslProtocol: tls12
 
   mTls-handshakes-kestrel:
     application:
@@ -116,6 +127,7 @@ scenarios:
         serverScheme: https
         certPath: https://raw.githubusercontent.com/aspnet/Benchmarks/refs/heads/main/src/BenchmarksApps/TLS/Kestrel/testCert.pfx
         certPwd: testPassword
+        sslProtocol: tls12
 
   tls-renegotiation-kestrel:
     application:
@@ -132,4 +144,5 @@ scenarios:
         connections: 32
         serverScheme: https
         certPath: https://raw.githubusercontent.com/aspnet/Benchmarks/refs/heads/main/src/BenchmarksApps/TLS/Kestrel/testCert.pfx
-        certPwd: testPassword
+        certPwd: testPassword
+        sslProtocol: tls12

src/BenchmarksApps/TLS/HttpSys/Program.cs

@@ -1,17 +1,23 @@
 using HttpSys;
+using Microsoft.AspNetCore.Connections.Features;
+using Microsoft.AspNetCore.Http.Features;
 using Microsoft.AspNetCore.Server.HttpSys;
 
 var builder = WebApplication.CreateBuilder(args);
 builder.Logging.ClearProviders();
 
-var writeCertValidationEventsToConsole = bool.TryParse(builder.Configuration["certValidationConsoleEnabled"], out var certValidationConsoleEnabled) && certValidationConsoleEnabled;
+// behavioral
 var httpSysLoggingEnabled = bool.TryParse(builder.Configuration["httpSysLogs"], out var httpSysLogsEnabled) && httpSysLogsEnabled;
-var statsEnabled = bool.TryParse(builder.Configuration["statsEnabled"], out var connectionStatsEnabledConfig) && connectionStatsEnabledConfig;
 var mTlsEnabled = bool.TryParse(builder.Configuration["mTLS"], out var mTlsEnabledConfig) && mTlsEnabledConfig;
 var tlsRenegotiationEnabled = bool.TryParse(builder.Configuration["tlsRenegotiation"], out var tlsRenegotiationEnabledConfig) && tlsRenegotiationEnabledConfig;
 var listeningEndpoints = builder.Configuration["urls"] ?? "https://localhost:5000/";
 var httpsIpPort = listeningEndpoints.Split(";").First(x => x.Contains("https")).Replace("https://", "");
 
+// debug
+var writeCertValidationEventsToConsole = bool.TryParse(builder.Configuration["certValidationConsoleEnabled"], out var certValidationConsoleEnabled) && certValidationConsoleEnabled;
+var statsEnabled = bool.TryParse(builder.Configuration["statsEnabled"], out var connectionStatsEnabledConfig) && connectionStatsEnabledConfig;
+var logRequestDetails = bool.TryParse(builder.Configuration["logRequestDetails"], out var logRequestDetailsConfig) && logRequestDetailsConfig;
+
 #pragma warning disable CA1416 // Can be launched only on Windows (HttpSys)
 builder.WebHost.UseHttpSys(options =>
 {
@@ -30,6 +36,27 @@
 var connectionIds = new HashSet<string>();
 var fetchedCertsCounter = 0;
 
+if (logRequestDetails)
+{
+    var logged = false;
+    Console.WriteLine("Registered request details logging middleware");
+    app.Use(async (context, next) =>
+    {
+        if (!logged)
+        {
+            logged = true;
+
+            var tlsHandshakeFeature = context.Features.GetRequiredFeature<ITlsHandshakeFeature>();
+
+            Console.WriteLine("Request details:");
+            Console.WriteLine("-----");
+            Console.WriteLine("TLS: " + tlsHandshakeFeature.Protocol);
+            Console.WriteLine("-----");
+        }
+        await next();
+    });
+}
+
 if (statsEnabled)
 {
     Console.WriteLine("Registered stats middleware");

src/BenchmarksApps/TLS/Kestrel/Program.cs

@@ -1,19 +1,27 @@
 using System.Net;
 using System.Net.Security;
+using System.Security.Authentication;
 using System.Security.Cryptography.X509Certificates;
 using Microsoft.AspNetCore.Authentication.Certificate;
+using Microsoft.AspNetCore.Connections.Features;
+using Microsoft.AspNetCore.Http.Features;
 using Microsoft.AspNetCore.Server.HttpSys;
 using Microsoft.AspNetCore.Server.Kestrel.Core;
 using Microsoft.AspNetCore.Server.Kestrel.Https;
 
 var builder = WebApplication.CreateBuilder(args);
 builder.Logging.ClearProviders();
 
-var writeCertValidationEventsToConsole = bool.TryParse(builder.Configuration["certValidationConsoleEnabled"], out var certValidationConsoleEnabled) && certValidationConsoleEnabled;
+// behavioral
 var mTlsEnabled = bool.TryParse(builder.Configuration["mTLS"], out var mTlsEnabledConfig) && mTlsEnabledConfig;
 var tlsRenegotiationEnabled = bool.TryParse(builder.Configuration["tlsRenegotiation"], out var tlsRenegotiationEnabledConfig) && tlsRenegotiationEnabledConfig;
-var statsEnabled = bool.TryParse(builder.Configuration["statsEnabled"], out var connectionStatsEnabledConfig) && connectionStatsEnabledConfig;
 var listeningEndpoints = builder.Configuration["urls"] ?? "https://localhost:5000/";
+var supportedTlsVersions = ParseSslProtocols(builder.Configuration["tlsProtocols"]);
+
+// debug
+var writeCertValidationEventsToConsole = bool.TryParse(builder.Configuration["certValidationConsoleEnabled"], out var certValidationConsoleEnabled) && certValidationConsoleEnabled;
+var statsEnabled = bool.TryParse(builder.Configuration["statsEnabled"], out var connectionStatsEnabledConfig) && connectionStatsEnabledConfig;
+var logRequestDetails = bool.TryParse(builder.Configuration["logRequestDetails"], out var logRequestDetailsConfig) && logRequestDetailsConfig;
 
 if (mTlsEnabled && tlsRenegotiationEnabled)
 {
@@ -40,6 +48,11 @@
             // [SuppressMessage("Microsoft.Security", "CSCAN0220.DefaultPasswordContexts", Justification="Benchmark code, not a secret")]
             listenOptions.UseHttps("testCert.pfx", "testPassword", options =>
             {
+                if (supportedTlsVersions is not null)
+                {
+                    options.SslProtocols = supportedTlsVersions.Value;
+                }
+
                 if (mTlsEnabled)
                 {
                     options.ClientCertificateMode = ClientCertificateMode.RequireCertificate;
@@ -81,6 +94,28 @@
     return true;
 }
 
+if (logRequestDetails)
+{
+    var logged = false;
+    Console.WriteLine("Registered request details logging middleware");
+    app.Use(async (context, next) =>
+    {
+        if (!logged)
+        {
+            logged = true;
+
+            var tlsHandshakeFeature = context.Features.GetRequiredFeature<ITlsHandshakeFeature>();
+
+            Console.WriteLine("Request details:");
+            Console.WriteLine("-----");
+            Console.WriteLine("TLS: " + tlsHandshakeFeature.Protocol);
+            Console.WriteLine("-----");
+        }
+
+        await next(context);
+    });
+}
+
 if (statsEnabled)
 {
     Console.WriteLine("Registered stats middleware");
@@ -89,7 +124,7 @@
         connectionIds.Add(context.Connection.Id);
         Console.WriteLine($"[stats] unique connections established: {connectionIds.Count}; fetched certificates: {fetchedCertsCounter}");
 
-        await next();
+        await next(context);
     });
 }
 
@@ -109,7 +144,7 @@
             Console.WriteLine($"client certificate ({clientCert.Thumbprint}) already exists on the connection {context.Connection.Id}");
         }
 
-        await next();
+        await next(context);
     });
 }
 
@@ -137,6 +172,7 @@
 {
     Console.WriteLine($"\tenabled logging stats to console");
 }
+Console.WriteLine($"\tsupported TLS versions: {supportedTlsVersions}");
 Console.WriteLine($"\tlistening endpoints: {listeningEndpoints}");
 Console.WriteLine("--------------------------------");
 
@@ -151,10 +187,36 @@
     {
         ip = IPAddress.Loopback;
     }
     else if (!IPAddress.TryParse(urlPrefix.Host, out ip))
     {
         ip = IPAddress.IPv6Any;
     }
 
     return new IPEndPoint(ip, urlPrefix.PortValue);
+}
+
+static SslProtocols? ParseSslProtocols(string? supportedTlsVersions)
+{
+    var protocols = SslProtocols.None;
+    if (string.IsNullOrEmpty(supportedTlsVersions) || supportedTlsVersions == "any")
+    {
+        return null;
+    }
+
+    foreach (var version in supportedTlsVersions.Split(','))
+    {
+        switch (version.Trim().ToLower())
+        {
+            case "tls12":
+                protocols |= SslProtocols.Tls12;
+                break;
+            case "tls13":
+                protocols |= SslProtocols.Tls13;
+                break;
+            default:
+                throw new ArgumentException($"Unsupported TLS version: {version}");
+        }
+    }
+
+    return protocols;
 }