fix TLS13 procesing on windows

src/libraries/Common/tests/CoreFx.Private.TestUtilities/System/PlatformDetection.cs

@@ -114,7 +114,7 @@ public static bool IsNonZeroLowerBoundArraySupported
         public static bool SupportsClientAlpn => SupportsAlpn || (IsOSX && PlatformDetection.OSXVersion > new Version(10, 12));
 
         // OpenSSL 1.1.1 and above.
-        public static bool SupportsTls13 => !IsWindows && !IsOSX && (OpenSslVersion.CompareTo(new Version(1,1,1)) >= 0);
+        public static bool SupportsTls13 => GetTls13Support();
 
         private static Lazy<bool> s_largeArrayIsNotSupported = new Lazy<bool>(IsLargeArrayNotSupported);
 
@@ -204,6 +204,38 @@ private static bool GetSsl3Support()
             return (IsOSX || (IsLinux && OpenSslVersion < new Version(1, 0, 2) && !IsDebian));
         }
 
+        private static bool GetTls13Support()
+        {
+            if (IsWindows)
+            {
+                if (!IsWindows10Version2004OrGreater)
+                {
+                    return false;
+                }
+
+                string clientKey = @"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Client";
+                string serverKey = @"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Server";
+
+                object client, server;
+                try
+                {
+                    client = Registry.GetValue(clientKey, "Enabled", null);
+                    server = Registry.GetValue(serverKey, "Enabled", null);
+                    if (client is int c && server is int s)
+                    {
+                        return c == 1 && s == 1;
+                    }
+                }
+                catch { };
+                // assume no if key is missing or on error.
+                return false;
+            }
+            else
+            {
+                return !IsOSX && (OpenSslVersion.CompareTo(new Version(1,1,1)) >= 0);
+            }
+        }
+
         private static bool GetIsRunningOnMonoInterpreter()
         {
             // This is a temporary solution because mono does not support interpreter detection

src/libraries/System.Net.Security/src/System/Net/Security/SslStream.Implementation.cs

@@ -234,8 +234,8 @@ private async Task ReplyOnReAuthenticationAsync<TIOAdapter>(TIOAdapter adapter,
         private async Task ForceAuthenticationAsync<TIOAdapter>(TIOAdapter adapter, bool receiveFirst, byte[]? reAuthenticationData, bool isApm = false)
              where TIOAdapter : ISslIOAdapter
         {
-            _framing = Framing.Unknown;
             ProtocolToken message;
+            bool handshakeCompleted = false;
 
             if (reAuthenticationData == null)
             {
@@ -262,10 +262,22 @@ private async Task ForceAuthenticationAsync<TIOAdapter>(TIOAdapter adapter, bool
                         // tracing done in NextMessage()
                         throw new AuthenticationException(SR.net_auth_SSPI, message.GetException());
                     }
+
+                    if (message.Status.ErrorCode == SecurityStatusPalErrorCode.OK)
+                    {
+                        // We can finish renegotiation without doing any read.
+                        handshakeCompleted = true;
+                    }
                 }
 
-                _handshakeBuffer = new ArrayBuffer(InitialHandshakeBufferSize);
-                do
+                if (!handshakeCompleted)
+                {
+                    // get ready to receive first frame
+                    _handshakeBuffer = new ArrayBuffer(InitialHandshakeBufferSize);
+                    _framing = Framing.Unknown;
+                }
+
+                while (!handshakeCompleted)
                 {
                     message = await ReceiveBlobAsync(adapter).ConfigureAwait(false);
                     if (message.Size > 0)
@@ -278,7 +290,12 @@ private async Task ForceAuthenticationAsync<TIOAdapter>(TIOAdapter adapter, bool
                     {
                         throw new AuthenticationException(SR.net_auth_SSPI, message.GetException());
                     }
-                } while (message.Status.ErrorCode != SecurityStatusPalErrorCode.OK);
+                    else if (message.Status.ErrorCode == SecurityStatusPalErrorCode.OK)
+                    {
+                        // We can finish renegotiation without doing any read.
+                        handshakeCompleted = true;
+                    }
+                }
 
                 if (_handshakeBuffer.ActiveLength > 0)
                 {
@@ -659,10 +676,18 @@ private async ValueTask<int> ReadAsyncInternal<TIOAdapter>(TIOAdapter adapter, M
                             // To handle this we call DecryptData() under lock and we create TCS waiter.
                             // EncryptData() checks that under same lock and if it exist it will not call low-level crypto.
                             // Instead it will wait synchronously or asynchronously and it will try again after the wait.
-                            // The result will be set when ReplyOnReAuthenticationAsync() is finished e.g. lsass business is over
-                            // or if we bail to continue. If either one happen before EncryptData(), _handshakeWaiter will be set to null
+                            // The result will be set when ReplyOnReAuthenticationAsync() is finished e.g. lsass business is over.
+                            // If that happen before EncryptData() runs, _handshakeWaiter will be set to null
                             // and EncryptData() will work normally e.g. no waiting, just exclusion with DecryptData()
-                            _handshakeWaiter = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
+
+
+                            if (_sslAuthenticationOptions!.AllowRenegotiation || SslProtocol == SslProtocols.Tls13)
+                            {
+                                // create TCS only if we plan to proceed. If not, we will throw in block bellow outside of the lock.
+                                // Tls1.3 does not have renegotiation. However on Windows this error code is used
+                                // for session management e.g. anything lsass needs to see.
+                                _handshakeWaiter = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
+                            }
                         }
                     }
 
@@ -686,11 +711,9 @@ private async ValueTask<int> ReadAsyncInternal<TIOAdapter>(TIOAdapter adapter, M
 
                         if (status.ErrorCode == SecurityStatusPalErrorCode.Renegotiate)
                         {
-                            if (!_sslAuthenticationOptions!.AllowRenegotiation)
+                            // We determine above that we will not process it.
+                            if (_handshakeWaiter == null)
                             {
-                                _handshakeWaiter!.SetResult(false);
-                                _handshakeWaiter = null;
-
                                 if (NetEventSource.IsEnabled) NetEventSource.Fail(this, "Renegotiation was requested but it is disallowed");
                                 throw new IOException(SR.net_ssl_io_renego);
                             }

src/libraries/System.Net.Security/tests/FunctionalTests/ServerNoEncryptionTest.cs

@@ -60,7 +60,7 @@ public async Task ServerNoEncryption_ClientAllowNoEncryption_ConnectWithNoEncryp
 
                 using (var sslStream = new SslStream(client.GetStream(), false, AllowAnyServerCertificate, null, EncryptionPolicy.AllowNoEncryption))
                 {
-                    await sslStream.AuthenticateAsClientAsync("localhost", null, SslProtocolSupport.DefaultSslProtocols, false);
+                    await sslStream.AuthenticateAsClientAsync("localhost", null, SslProtocols.Tls | SslProtocols.Tls11 |  SslProtocols.Tls12, false);
 
                     _log.WriteLine("Client authenticated to server({0}) with encryption cipher: {1} {2}-bit strength",
                         serverNoEncryption.RemoteEndPoint, sslStream.CipherAlgorithm, sslStream.CipherStrength);

src/libraries/System.Net.Security/tests/FunctionalTests/SslStreamNegotiatedCipherSuiteTest.cs

@@ -715,13 +715,17 @@ private static NegotiatedParams ConnectAndGetNegotiatedParams(ConnectionParams s
                 {
                     // send some bytes, make sure they can talk
                     byte[] data = new byte[] { 1, 2, 3 };
-                    server.WriteAsync(data, 0, data.Length);
-
+                    byte[] receivedData = new byte[1];
+                    Task serverTask = server.WriteAsync(data, 0, data.Length);
                     for (int i = 0; i < data.Length; i++)
                     {
-                        Assert.Equal(data[i], client.ReadByte());
+                        Assert.True(client.ReadAsync(receivedData, 0, 1).Wait(TestConfiguration.PassingTestTimeoutMilliseconds),
+                                                                        $"Read task failed to finish in {TestConfiguration.PassingTestTimeoutMilliseconds}ms.");
+                        Assert.Equal(data[i], receivedData[0]);
                     }
 
+                    Assert.True(serverTask.Wait(TestConfiguration.PassingTestTimeoutMilliseconds),
+                                $"WriteTask failed to finish in {TestConfiguration.PassingTestTimeoutMilliseconds}ms.");
                     return new NegotiatedParams(server, client);
                 }
                 else