Make Kestrels Internals truly internal. (#8517)

src/Servers/Kestrel/Core/src/Adapter/Internal/AdaptedPipeline.cs

@@ -5,14 +5,13 @@ using System;
 using System.IO;
 using System.IO.Pipelines;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 using Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions.Internal;
 using Microsoft.Extensions.Logging;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Adapter.Internal
 {
-    public class AdaptedPipeline : IDuplexPipe
+    internal class AdaptedPipeline : IDuplexPipe
     {
         private static readonly int MinAllocBufferSize = KestrelMemoryPool.MinimumSegmentSize / 2;
 

src/Servers/Kestrel/Core/src/Adapter/Internal/LoggingConnectionAdapter.cs

@@ -8,7 +8,7 @@ using Microsoft.Extensions.Logging;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Adapter.Internal
 {
-    public class LoggingConnectionAdapter : IConnectionAdapter
+    internal class LoggingConnectionAdapter : IConnectionAdapter
     {
         private readonly ILogger _logger;
 

src/Servers/Kestrel/Core/src/Adapter/Internal/RawStream.cs

@@ -10,7 +10,7 @@ using System.Buffers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Adapter.Internal
 {
-    public class RawStream : Stream
+    internal class RawStream : Stream
     {
         private readonly PipeReader _input;
         private readonly PipeWriter _output;

src/Servers/Kestrel/Core/src/BadHttpRequestException.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Diagnostics;
@@ -42,10 +42,8 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core
         }
 
         [StackTraceHidden]
-#pragma warning disable PUB0001 // Pubternal type in public API
-        public static void Throw(RequestRejectionReason reason, HttpMethod method)
+        internal static void Throw(RequestRejectionReason reason, HttpMethod method)
             => throw GetException(reason, method.ToString().ToUpperInvariant());
-#pragma warning restore PUB0001 // Pubternal type in public API
 
         [MethodImpl(MethodImplOptions.NoInlining)]
         internal static BadHttpRequestException GetException(RequestRejectionReason reason)
@@ -175,4 +173,4 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core
             return ex;
         }
     }
-}
+}

src/Servers/Kestrel/Core/src/CertificateLoader.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;

src/Servers/Kestrel/Core/src/Internal/ConnectionDispatcher.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -13,7 +13,7 @@ using Microsoft.Extensions.Logging;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal
 {
-    public class ConnectionDispatcher : IConnectionDispatcher
+    internal class ConnectionDispatcher : IConnectionDispatcher
     {
         private static long _lastConnectionId = long.MinValue;
 

src/Servers/Kestrel/Core/src/Internal/ConnectionLimitMiddleware.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Threading.Tasks;
@@ -8,7 +8,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal
 {
-    public class ConnectionLimitMiddleware
+    internal class ConnectionLimitMiddleware
     {
         private readonly ConnectionDelegate _next;
         private readonly ResourceCounter _concurrentConnectionCounter;

src/Servers/Kestrel/Core/src/Internal/ConnectionLogScope.cs

@@ -8,7 +8,7 @@ using System.Globalization;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal
 {
-    public class ConnectionLogScope : IReadOnlyList<KeyValuePair<string, object>>
+    internal class ConnectionLogScope : IReadOnlyList<KeyValuePair<string, object>>
     {
         private readonly string _connectionId;
 

src/Servers/Kestrel/Core/src/Internal/DuplexPipe.cs

@@ -1,4 +1,7 @@
-namespace System.IO.Pipelines
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+namespace System.IO.Pipelines
 {
     internal class DuplexPipe : IDuplexPipe
     {

src/Servers/Kestrel/Core/src/Internal/Http/ConnectionOptions.cs

@@ -6,7 +6,7 @@ using System;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
     [Flags]
-    public enum ConnectionOptions
+    internal enum ConnectionOptions
     {
         None = 0,
         Close = 1,

src/Servers/Kestrel/Core/src/Internal/Http/DateHeaderValueManager.cs

@@ -12,7 +12,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
     /// <summary>
     /// Manages the generation of the date header value.
     /// </summary>
-    public class DateHeaderValueManager : IHeartbeatHandler
+    internal class DateHeaderValueManager : IHeartbeatHandler
     {
         private static readonly byte[] _datePreambleBytes = Encoding.ASCII.GetBytes("\r\nDate: ");
 

src/Servers/Kestrel/Core/src/Internal/Http/Http1ChunkedEncodingMessageBody.cs

@@ -9,7 +9,6 @@ using System.IO.Pipelines;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Connections;
-using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 using Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions.Internal;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
@@ -17,7 +16,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
     /// <summary>
     ///   http://tools.ietf.org/html/rfc2616#section-3.6.1
     /// </summary>
-    public class Http1ChunkedEncodingMessageBody : Http1MessageBody
+    internal class Http1ChunkedEncodingMessageBody : Http1MessageBody
     {
         // byte consts don't have a data type annotation so we pre-cast it
         private const byte ByteCR = (byte)'\r';

src/Servers/Kestrel/Core/src/Internal/Http/Http1Connection.FeatureCollection.cs

@@ -11,7 +11,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Features;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public partial class Http1Connection : IHttpMinRequestBodyDataRateFeature,
+    internal partial class Http1Connection : IHttpMinRequestBodyDataRateFeature,
                                            IHttpMinResponseDataRateFeature
     {
         MinDataRate IHttpMinRequestBodyDataRateFeature.MinDataRate

src/Servers/Kestrel/Core/src/Internal/Http/Http1Connection.cs

@@ -11,11 +11,10 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Connections;
 using Microsoft.AspNetCore.Http.Features;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
-using Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions.Internal;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public partial class Http1Connection : HttpProtocol, IRequestProcessor
+    internal partial class Http1Connection : HttpProtocol, IRequestProcessor
     {
         private const byte ByteAsterisk = (byte)'*';
         private const byte ByteForwardSlash = (byte)'/';

src/Servers/Kestrel/Core/src/Internal/Http/Http1ContentLengthMessageBody.cs

@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Connections;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public class Http1ContentLengthMessageBody : Http1MessageBody
+    internal class Http1ContentLengthMessageBody : Http1MessageBody
     {
         private readonly long _contentLength;
         private long _inputLength;

src/Servers/Kestrel/Core/src/Internal/Http/Http1MessageBody.cs

@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public abstract class Http1MessageBody : MessageBody
+    internal abstract class Http1MessageBody : MessageBody
     {
         protected readonly Http1Connection _context;
 

src/Servers/Kestrel/Core/src/Internal/Http/Http1OutputProducer.cs

@@ -15,7 +15,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public class Http1OutputProducer : IHttpOutputProducer, IHttpOutputAborter, IDisposable
+    internal class Http1OutputProducer : IHttpOutputProducer, IHttpOutputAborter, IDisposable
     {
         // Use C#7.3's ReadOnlySpan<byte> optimization for static data https://vcsjones.com/2019/02/01/csharp-readonly-span-bytes-static/
         // "HTTP/1.1 100 Continue\r\n\r\n"

src/Servers/Kestrel/Core/src/Internal/Http/Http1ParsingHandler.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public readonly struct Http1ParsingHandler : IHttpRequestLineHandler, IHttpHeadersHandler
+    internal readonly struct Http1ParsingHandler : IHttpRequestLineHandler, IHttpHeadersHandler
     {
         public readonly Http1Connection Connection;
 

src/Servers/Kestrel/Core/src/Internal/Http/Http1UpgradeMessageBody.cs

@@ -12,7 +12,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
     /// The upgrade stream uses the raw connection stream instead of going through the RequestBodyPipe. This
     /// removes the redundant copy from the transport pipe to the body pipe.
     /// </summary>
-    public class Http1UpgradeMessageBody : Http1MessageBody
+    internal class Http1UpgradeMessageBody : Http1MessageBody
     {
         public bool _completed;
         public Http1UpgradeMessageBody(Http1Connection context)

src/Servers/Kestrel/Core/src/Internal/Http/HttpHeaders.Generated.cs

@@ -12,7 +12,7 @@ using Microsoft.Net.Http.Headers;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
 
-    public partial class HttpRequestHeaders
+    internal partial class HttpRequestHeaders
     {
 
         private long _bits = 0;
@@ -4705,7 +4705,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
         }
     }
 
-    public partial class HttpResponseHeaders
+    internal partial class HttpResponseHeaders
     {
         private static ReadOnlySpan<byte> HeaderBytes => new byte[]
         {
@@ -8531,7 +8531,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
         }
     }
 
-    public partial class HttpResponseTrailers
+    internal partial class HttpResponseTrailers
     {
         private static ReadOnlySpan<byte> HeaderBytes => new byte[]
         {

src/Servers/Kestrel/Core/src/Internal/Http/HttpHeaders.cs

@@ -14,7 +14,7 @@ using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public abstract class HttpHeaders : IHeaderDictionary
+    internal abstract class HttpHeaders : IHeaderDictionary
     {
         protected long? _contentLength;
         protected bool _isReadOnly;

src/Servers/Kestrel/Core/src/Internal/Http/HttpMethod.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public enum HttpMethod: byte
+    internal enum HttpMethod: byte
     {
         Get,
         Put,

src/Servers/Kestrel/Core/src/Internal/Http/HttpParser.cs

@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public class HttpParser<TRequestHandler> : IHttpParser<TRequestHandler> where TRequestHandler : IHttpHeadersHandler, IHttpRequestLineHandler
+    internal class HttpParser<TRequestHandler> : IHttpParser<TRequestHandler> where TRequestHandler : IHttpHeadersHandler, IHttpRequestLineHandler
     {
         private bool _showErrorDetails;
 

src/Servers/Kestrel/Core/src/Internal/Http/HttpProtocol.FeatureCollection.cs

@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.IO;
 using System.IO.Pipelines;
 using System.Net;
@@ -17,7 +16,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions.Internal;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public partial class HttpProtocol : IHttpRequestFeature,
+    internal partial class HttpProtocol : IHttpRequestFeature,
                                         IHttpResponseFeature,
                                         IResponseBodyPipeFeature,
                                         IRequestBodyPipeFeature,

src/Servers/Kestrel/Core/src/Internal/Http/HttpProtocol.Generated.cs

@@ -11,7 +11,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Features;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public partial class HttpProtocol : IFeatureCollection
+    internal partial class HttpProtocol : IFeatureCollection
     {
         private static readonly Type IHttpRequestFeatureType = typeof(IHttpRequestFeature);
         private static readonly Type IHttpResponseFeatureType = typeof(IHttpResponseFeature);

src/Servers/Kestrel/Core/src/Internal/Http/HttpProtocol.cs

@@ -23,7 +23,7 @@ using Microsoft.Extensions.Primitives;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public abstract partial class HttpProtocol : IDefaultHttpContextContainer, IHttpResponseControl
+    internal abstract partial class HttpProtocol : IDefaultHttpContextContainer, IHttpResponseControl
     {
         private static readonly byte[] _bytesConnectionClose = Encoding.ASCII.GetBytes("\r\nConnection: close");
         private static readonly byte[] _bytesConnectionKeepAlive = Encoding.ASCII.GetBytes("\r\nConnection: keep-alive");

src/Servers/Kestrel/Core/src/Internal/Http/HttpRequestHeaders.cs

@@ -11,7 +11,7 @@ using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public sealed partial class HttpRequestHeaders : HttpHeaders
+    internal sealed partial class HttpRequestHeaders : HttpHeaders
     {
         private static long ParseContentLength(string value)
         {

src/Servers/Kestrel/Core/src/Internal/Http/HttpRequestPipeReader.cs

@@ -13,7 +13,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
     /// <summary>
     /// Default HttpRequest PipeReader implementation to be used by Kestrel.
     /// </summary>
-    public class HttpRequestPipeReader : PipeReader
+    internal class HttpRequestPipeReader : PipeReader
     {
         private MessageBody _body;
         private HttpStreamState _state;

src/Servers/Kestrel/Core/src/Internal/Http/HttpRequestTargetForm.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public enum HttpRequestTarget
+    internal enum HttpRequestTarget
     {
         Unknown = -1,
         // origin-form is the most common

src/Servers/Kestrel/Core/src/Internal/Http/HttpResponseHeaders.cs

@@ -12,7 +12,7 @@ using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public sealed partial class HttpResponseHeaders : HttpHeaders
+    internal sealed partial class HttpResponseHeaders : HttpHeaders
     {
         private static ReadOnlySpan<byte> _CrLf => new[] { (byte)'\r', (byte)'\n' };
         private static ReadOnlySpan<byte> _colonSpace => new[] { (byte)':', (byte)' ' };

src/Servers/Kestrel/Core/src/Internal/Http/HttpResponsePipeWriter.cs

@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public class HttpResponsePipeWriter : PipeWriter
+    internal class HttpResponsePipeWriter : PipeWriter
     {
         private HttpStreamState _state;
         private readonly IHttpResponseControl _pipeControl;

src/Servers/Kestrel/Core/src/Internal/Http/HttpResponseTrailers.cs

@@ -9,7 +9,7 @@ using Microsoft.Extensions.Primitives;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public partial class HttpResponseTrailers : HttpHeaders
+    internal partial class HttpResponseTrailers : HttpHeaders
     {
         public Enumerator GetEnumerator()
         {

src/Servers/Kestrel/Core/src/Internal/Http/HttpScheme.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public enum HttpScheme
+    internal enum HttpScheme
     {
         Unknown = -1,
         Http = 0,

src/Servers/Kestrel/Core/src/Internal/Http/HttpStreamState.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    enum HttpStreamState
+    internal enum HttpStreamState
     {
         Open,
         Closed,

src/Servers/Kestrel/Core/src/Internal/Http/HttpVersion.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public enum HttpVersion
+    internal enum HttpVersion
     {
         Unknown = -1,
         Http10 = 0,

src/Servers/Kestrel/Core/src/Internal/Http/IHttpHeadersHandler.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public interface IHttpHeadersHandler
+    internal interface IHttpHeadersHandler
     {
         void OnHeader(Span<byte> name, Span<byte> value);
     }

src/Servers/Kestrel/Core/src/Internal/Http/IHttpOutputAborter.cs

@@ -5,7 +5,7 @@ using Microsoft.AspNetCore.Connections;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public interface IHttpOutputAborter
+    internal interface IHttpOutputAborter
     {
         void Abort(ConnectionAbortedException abortReason);
     }

src/Servers/Kestrel/Core/src/Internal/Http/IHttpOutputProducer.cs

@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public interface IHttpOutputProducer
+    internal interface IHttpOutputProducer
     {
         ValueTask<FlushResult> WriteChunkAsync(ReadOnlySpan<byte> data, CancellationToken cancellationToken);
         ValueTask<FlushResult> FlushAsync(CancellationToken cancellationToken);

src/Servers/Kestrel/Core/src/Internal/Http/IHttpParser.cs

@@ -6,7 +6,7 @@ using System.Buffers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public interface IHttpParser<TRequestHandler> where TRequestHandler : IHttpHeadersHandler, IHttpRequestLineHandler
+    internal interface IHttpParser<TRequestHandler> where TRequestHandler : IHttpHeadersHandler, IHttpRequestLineHandler
     {
         bool ParseRequestLine(TRequestHandler handler, in ReadOnlySequence<byte> buffer, out SequencePosition consumed, out SequencePosition examined);
 

src/Servers/Kestrel/Core/src/Internal/Http/IHttpRequestLineHandler.cs

@@ -5,8 +5,8 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public interface IHttpRequestLineHandler
+    internal interface IHttpRequestLineHandler
     {
         void OnStartLine(HttpMethod method, HttpVersion version, Span<byte> target, Span<byte> path, Span<byte> query, Span<byte> customMethod, bool pathEncoded);
     }
-}
+}

src/Servers/Kestrel/Core/src/Internal/Http/IHttpResponseControl.cs

@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public interface IHttpResponseControl
+    internal interface IHttpResponseControl
     {
         void ProduceContinue();
         Memory<byte> GetMemory(int sizeHint = 0);

src/Servers/Kestrel/Core/src/Internal/Http/IHttpResponsePipeWriterControl.cs

@@ -10,7 +10,7 @@ using System.Threading.Tasks;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public interface IHttpResponsePipeWriterControl
+    internal interface IHttpResponsePipeWriterControl
     {
         void ProduceContinue();
         Memory<byte> GetMemory(int sizeHint = 0);

src/Servers/Kestrel/Core/src/Internal/Http/MessageBody.cs

@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public abstract class MessageBody
+    internal abstract class MessageBody
     {
         private static readonly MessageBody _zeroContentLengthClose = new ZeroContentLengthMessageBody(keepAlive: false);
         private static readonly MessageBody _zeroContentLengthKeepAlive = new ZeroContentLengthMessageBody(keepAlive: true);

src/Servers/Kestrel/Core/src/Internal/Http/PathNormalizer.cs

@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public static class PathNormalizer
+    internal static class PathNormalizer
     {
         private const byte ByteSlash = (byte)'/';
         private const byte ByteDot = (byte)'.';

src/Servers/Kestrel/Core/src/Internal/Http/PipelineExtensions.cs

@@ -9,7 +9,7 @@ using System.Runtime.InteropServices;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public static class PipelineExtensions
+    internal static class PipelineExtensions
     {
         private const int _maxULongByteLength = 20;
 

src/Servers/Kestrel/Core/src/Internal/Http/ProduceEndType.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public enum ProduceEndType
+    internal enum ProduceEndType
     {
         SocketShutdown,
         SocketDisconnect,

src/Servers/Kestrel/Core/src/Internal/Http/ReasonPhrases.cs

@@ -8,7 +8,7 @@ using Microsoft.AspNetCore.Http;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public static class ReasonPhrases
+    internal static class ReasonPhrases
     {
         private static readonly byte[] _bytesStatus100 = CreateStatusBytes(StatusCodes.Status100Continue);
         private static readonly byte[] _bytesStatus101 = CreateStatusBytes(StatusCodes.Status101SwitchingProtocols);

src/Servers/Kestrel/Core/src/Internal/Http/RequestProcessingStatus.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public enum RequestProcessingStatus
+    internal enum RequestProcessingStatus
     {
         RequestPending,
         ParsingRequestLine,

src/Servers/Kestrel/Core/src/Internal/Http/RequestRejectionReason.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public enum RequestRejectionReason
+    internal enum RequestRejectionReason
     {
         UnrecognizedHTTPVersion,
         InvalidRequestLine,

src/Servers/Kestrel/Core/src/Internal/Http/TransferCoding.cs

@@ -6,7 +6,7 @@ using System;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
     [Flags]
-    public enum TransferCoding
+    internal enum TransferCoding
     {
         None,
         Chunked,

src/Servers/Kestrel/Core/src/Internal/Http/ZeroContentLengthMessageBody.cs

@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
 {
-    public class ZeroContentLengthMessageBody : MessageBody
+    internal class ZeroContentLengthMessageBody : MessageBody
     {
         public ZeroContentLengthMessageBody(bool keepAlive)
             : base(null, null)

src/Servers/Kestrel/Core/src/Internal/Http2/FlowControl/FlowControl.cs

@@ -1,11 +1,11 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Diagnostics;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.FlowControl
 {
-    public struct FlowControl
+    internal struct FlowControl
     {
         public FlowControl(uint initialWindowSize)
         {

src/Servers/Kestrel/Core/src/Internal/Http2/FlowControl/InputFlowControl.cs

@@ -1,11 +1,11 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Diagnostics;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.FlowControl
 {
-    public class InputFlowControl
+    internal class InputFlowControl
     {
         private readonly int _initialWindowSize;
         private readonly int _minWindowSizeIncrement;

src/Servers/Kestrel/Core/src/Internal/Http2/FlowControl/OutputFlowControl.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Collections.Generic;
@@ -6,7 +6,7 @@ using System.Diagnostics;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.FlowControl
 {
-    public class OutputFlowControl
+    internal class OutputFlowControl
     {
         private FlowControl _flow;
         private Queue<OutputFlowControlAwaitable> _awaitableQueue;

src/Servers/Kestrel/Core/src/Internal/Http2/FlowControl/OutputFlowControlAwaitable.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -8,7 +8,7 @@ using System.Threading;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.FlowControl
 {
-    public class OutputFlowControlAwaitable : ICriticalNotifyCompletion
+    internal class OutputFlowControlAwaitable : ICriticalNotifyCompletion
     {
         private static readonly Action _callbackCompleted = () => { };
 

src/Servers/Kestrel/Core/src/Internal/Http2/FlowControl/StreamInputFlowControl.cs

@@ -1,11 +1,11 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Diagnostics;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.FlowControl
 {
-    public class StreamInputFlowControl
+    internal class StreamInputFlowControl
     {
         private readonly InputFlowControl _connectionLevelFlowControl;
         private readonly InputFlowControl _streamLevelFlowControl;

src/Servers/Kestrel/Core/src/Internal/Http2/FlowControl/StreamOutputFlowControl.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -7,7 +7,7 @@ using System.Runtime.CompilerServices;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.FlowControl
 {
-    public class StreamOutputFlowControl
+    internal class StreamOutputFlowControl
     {
         private readonly OutputFlowControl _connectionLevelFlowControl;
         private readonly OutputFlowControl _streamLevelFlowControl;

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/DynamicTable.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class DynamicTable
+    internal class DynamicTable
     {
         private HeaderField[] _buffer;
         private int _maxSize;

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/HPackDecoder.cs

@@ -7,7 +7,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class HPackDecoder
+    internal class HPackDecoder
     {
         private enum State
         {

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/HPackDecodingException.cs

@@ -1,11 +1,11 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class HPackDecodingException : Exception
+    internal class HPackDecodingException : Exception
     {
         public HPackDecodingException(string message)
             : base(message)

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/HPackEncoder.cs

@@ -6,7 +6,7 @@ using System.Collections.Generic;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class HPackEncoder
+    internal class HPackEncoder
     {
         private IEnumerator<KeyValuePair<string, string>> _enumerator;
 

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/HPackEncodingException.cs

@@ -1,11 +1,11 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class HPackEncodingException : Exception
+    internal class HPackEncodingException : Exception
     {
         public HPackEncodingException(string message)
             : base(message)

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/HeaderField.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public readonly struct HeaderField
+    internal readonly struct HeaderField
     {
         // http://httpwg.org/specs/rfc7541.html#rfc.section.4.1
         public const int RfcOverhead = 32;

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/Huffman.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class Huffman
+    internal class Huffman
     {
         // TODO: this can be constructed from _decodingTable
         private static readonly (uint code, int bitLength)[] _encodingTable = new (uint code, int bitLength)[]

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/HuffmanDecodingException.cs

@@ -1,11 +1,11 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class HuffmanDecodingException : Exception
+    internal class HuffmanDecodingException : Exception
     {
         public HuffmanDecodingException(string message)
             : base(message)

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/IntegerDecoder.cs

@@ -6,7 +6,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
     /// <summary>
     /// The maximum we will decode is Int32.MaxValue, which is also the maximum request header field size.
     /// </summary>
-    public class IntegerDecoder
+    internal class IntegerDecoder
     {
         private int _i;
         private int _m;

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/IntegerEncoder.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public static class IntegerEncoder
+    internal static class IntegerEncoder
     {
         public static bool Encode(int i, int n, Span<byte> buffer, out int length)
         {

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/StaticTable.cs

@@ -7,7 +7,7 @@ using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public class StaticTable
+    internal class StaticTable
     {
         private static readonly StaticTable _instance = new StaticTable();
 

src/Servers/Kestrel/Core/src/Internal/Http2/HPack/StatusCodes.cs

@@ -6,7 +6,7 @@ using System.Text;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
-    public static class StatusCodes
+    internal static class StatusCodes
     {
         private static readonly byte[] _bytesStatus100 = CreateStatusBytes(Microsoft.AspNetCore.Http.StatusCodes.Status100Continue);
         private static readonly byte[] _bytesStatus101 = CreateStatusBytes(Microsoft.AspNetCore.Http.StatusCodes.Status101SwitchingProtocols);

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Connection.cs

@@ -26,7 +26,7 @@ using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2Connection : IHttp2StreamLifetimeHandler, IHttpHeadersHandler, IRequestProcessor
+    internal class Http2Connection : IHttp2StreamLifetimeHandler, IHttpHeadersHandler, IRequestProcessor
     {
         public static byte[] ClientPreface { get; } = Encoding.ASCII.GetBytes("PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n");
 

src/Servers/Kestrel/Core/src/Internal/Http2/Http2ConnectionErrorException.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2ConnectionErrorException : Exception
+    internal class Http2ConnectionErrorException : Exception
     {
         public Http2ConnectionErrorException(string message, Http2ErrorCode errorCode)
             : base($"HTTP/2 connection error ({errorCode}): {message}")

src/Servers/Kestrel/Core/src/Internal/Http2/Http2ContinuationFrameFlags.cs

@@ -6,7 +6,7 @@ using System;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
     [Flags]
-    public enum Http2ContinuationFrameFlags : byte
+    internal enum Http2ContinuationFrameFlags : byte
     {
         NONE = 0x0,
         END_HEADERS = 0x4,

src/Servers/Kestrel/Core/src/Internal/Http2/Http2DataFrameFlags.cs

@@ -6,7 +6,7 @@ using System;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
     [Flags]
-    public enum Http2DataFrameFlags : byte
+    internal enum Http2DataFrameFlags : byte
     {
         NONE = 0x0,
         END_STREAM = 0x1,

src/Servers/Kestrel/Core/src/Internal/Http2/Http2ErrorCode.cs

@@ -4,7 +4,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public enum Http2ErrorCode : uint
+    internal enum Http2ErrorCode : uint
     {
         NO_ERROR = 0x0,
         PROTOCOL_ERROR = 0x1,

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.Continuation.cs

@@ -8,7 +8,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                   Header Block Fragment (*)                 ...
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public Http2ContinuationFrameFlags ContinuationFlags
         {

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.Data.cs

@@ -12,7 +12,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                           Padding (*)                       ...
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public Http2DataFrameFlags DataFlags
         {

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.GoAway.cs

@@ -12,7 +12,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                  Additional Debug Data (*)                    |
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public int GoAwayLastStreamId { get; set; }
 

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.Headers.cs

@@ -16,7 +16,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                           Padding (*)                       ...
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public Http2HeadersFrameFlags HeadersFlags
         {

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.Ping.cs

@@ -10,7 +10,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                                                               |
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public Http2PingFrameFlags PingFlags
         {

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.Priority.cs

@@ -10,7 +10,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |   Weight (8)  |
         +-+-------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public int PriorityStreamDependency { get; set; }
 

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.RstStream.cs

@@ -8,7 +8,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                        Error Code (32)                        |
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public Http2ErrorCode RstStreamErrorCode { get; set; }
 

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.Settings.cs

@@ -11,7 +11,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                        Value (32)                             |
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public Http2SettingsFrameFlags SettingsFlags
         {

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.WindowUpdate.cs

@@ -8,7 +8,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |R|              Window Size Increment (31)                     |
         +-+-------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public int WindowUpdateSizeIncrement { get; set; }
 

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Frame.cs

@@ -14,7 +14,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         |                   Frame Payload (0...)                      ...
         +---------------------------------------------------------------+
     */
-    public partial class Http2Frame
+    internal partial class Http2Frame
     {
         public int PayloadLength { get; set; }
 

src/Servers/Kestrel/Core/src/Internal/Http2/Http2FrameReader.cs

@@ -10,7 +10,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public static class Http2FrameReader
+    internal static class Http2FrameReader
     {
         /* https://tools.ietf.org/html/rfc7540#section-4.1
             +-----------------------------------------------+

src/Servers/Kestrel/Core/src/Internal/Http2/Http2FrameType.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public enum Http2FrameType : byte
+    internal enum Http2FrameType : byte
     {
         DATA = 0x0,
         HEADERS = 0x1,

src/Servers/Kestrel/Core/src/Internal/Http2/Http2FrameWriter.cs

@@ -18,7 +18,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2FrameWriter
+    internal class Http2FrameWriter
     {
         // Literal Header Field without Indexing - Indexed Name (Index 8 - :status)
         private static ReadOnlySpan<byte> _continueBytes => new byte[] { 0x08, 0x03, (byte)'1', (byte)'0', (byte)'0' };

src/Servers/Kestrel/Core/src/Internal/Http2/Http2HeadersFrameFlags.cs

@@ -6,7 +6,7 @@ using System;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
     [Flags]
-    public enum Http2HeadersFrameFlags : byte
+    internal enum Http2HeadersFrameFlags : byte
     {
         NONE = 0x0,
         END_STREAM = 0x1,

src/Servers/Kestrel/Core/src/Internal/Http2/Http2MessageBody.cs

@@ -10,7 +10,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2MessageBody : MessageBody
+    internal class Http2MessageBody : MessageBody
     {
         private readonly Http2Stream _context;
         private ReadResult _readResult;

src/Servers/Kestrel/Core/src/Internal/Http2/Http2OutputProducer.cs

@@ -16,7 +16,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions.Internal;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2OutputProducer : IHttpOutputProducer, IHttpOutputAborter
+    internal class Http2OutputProducer : IHttpOutputProducer, IHttpOutputAborter
     {
         private readonly int _streamId;
         private readonly Http2FrameWriter _frameWriter;

src/Servers/Kestrel/Core/src/Internal/Http2/Http2PeerSetting.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public readonly struct Http2PeerSetting
+    internal readonly struct Http2PeerSetting
     {
         public Http2PeerSetting(Http2SettingsParameter parameter, uint value)
         {

src/Servers/Kestrel/Core/src/Internal/Http2/Http2PeerSettings.cs

@@ -5,7 +5,7 @@ using System.Collections.Generic;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2PeerSettings
+    internal class Http2PeerSettings
     {
         // Note these are protocol defaults, not Kestrel defaults.
         public const uint DefaultHeaderTableSize = 4096;

src/Servers/Kestrel/Core/src/Internal/Http2/Http2PingFrameFlags.cs

@@ -6,7 +6,7 @@ using System;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
     [Flags]
-    public enum Http2PingFrameFlags : byte
+    internal enum Http2PingFrameFlags : byte
     {
         NONE = 0x0,
         ACK = 0x1

src/Servers/Kestrel/Core/src/Internal/Http2/Http2SettingsFrameFlags.cs

@@ -6,7 +6,7 @@ using System;
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
     [Flags]
-    public enum Http2SettingsFrameFlags : byte
+    internal enum Http2SettingsFrameFlags : byte
     {
         NONE = 0x0,
         ACK = 0x1,

src/Servers/Kestrel/Core/src/Internal/Http2/Http2SettingsParameter.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public enum Http2SettingsParameter : ushort
+    internal enum Http2SettingsParameter : ushort
     {
         SETTINGS_HEADER_TABLE_SIZE = 0x1,
         SETTINGS_ENABLE_PUSH = 0x2,

src/Servers/Kestrel/Core/src/Internal/Http2/Http2SettingsParameterOutOfRangeException.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2SettingsParameterOutOfRangeException : Exception
+    internal class Http2SettingsParameterOutOfRangeException : Exception
     {
         public Http2SettingsParameterOutOfRangeException(Http2SettingsParameter parameter, long lowerBound, long upperBound)
             : base($"HTTP/2 SETTINGS parameter {parameter} must be set to a value between {lowerBound} and {upperBound}")

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Stream.FeatureCollection.cs

@@ -8,7 +8,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public partial class Http2Stream : IHttp2StreamIdFeature, IHttpResponseTrailersFeature
+    internal partial class Http2Stream : IHttp2StreamIdFeature, IHttpResponseTrailersFeature
     {
         internal HttpResponseTrailers Trailers { get; set; }
         private IHeaderDictionary _userTrailers;

src/Servers/Kestrel/Core/src/Internal/Http2/Http2Stream.cs

@@ -18,7 +18,7 @@ using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public abstract partial class Http2Stream : HttpProtocol, IThreadPoolWorkItem
+    internal abstract partial class Http2Stream : HttpProtocol, IThreadPoolWorkItem
     {
         private readonly Http2StreamContext _context;
         private readonly Http2OutputProducer _http2Output;

src/Servers/Kestrel/Core/src/Internal/Http2/Http2StreamContext.cs

@@ -5,7 +5,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.FlowControl;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
-    public class Http2StreamContext : HttpConnectionContext
+    internal class Http2StreamContext : HttpConnectionContext
     {
         public int StreamId { get; set; }
         public IHttp2StreamLifetimeHandler StreamLifetimeHandler { get; set; }