More decoupling (#1572)

- Remove Libuv and Hosting dependency from Kestrel.Core
- Kestrel.Https and Kestrel.Core depend on Hosting.Abstractions

* wip

* Added separate ServerAddressesFeature

* Review feedback
- Added TlsConnectionFeature to Https

src/Microsoft.AspNetCore.Server.Kestrel.Core/Internal/ServerAddressesFeature.cs

@@ -0,0 +1,16 @@
+// 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;
+using System.Collections.Generic;
+using System.Text;
+using Microsoft.AspNetCore.Hosting.Server.Features;
+
+namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal
+{
+    internal class ServerAddressesFeature : IServerAddressesFeature
+    {
+        public ICollection<string> Addresses { get; } = new List<string>();
+        public bool PreferHostingUrls { get; set; }
+    }
+}

src/Microsoft.AspNetCore.Server.Kestrel.Core/KestrelServer.cs

@@ -12,6 +12,7 @@ using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting.Server;
 using Microsoft.AspNetCore.Hosting.Server.Features;
 using Microsoft.AspNetCore.Http.Features;
+using Microsoft.AspNetCore.Server.Kestrel.Core.Internal;
 using Microsoft.AspNetCore.Server.Kestrel.Internal;
 using Microsoft.AspNetCore.Server.Kestrel.Internal.Http;
 using Microsoft.AspNetCore.Server.Kestrel.Internal.Infrastructure;
@@ -24,7 +25,6 @@ namespace Microsoft.AspNetCore.Server.Kestrel
 {
     public class KestrelServer : IServer
     {
-        //private Stack<IDisposable> _disposables;
         private readonly List<ITransport> _transports = new List<ITransport>();
 
         private readonly ILogger _logger;
@@ -60,7 +60,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel
             _logger = loggerFactory.CreateLogger(typeof(KestrelServer).GetTypeInfo().Namespace);
             Features = new FeatureCollection();
             _serverAddresses = new ServerAddressesFeature();
-            Features.Set<IServerAddressesFeature>(_serverAddresses);
+            Features.Set(_serverAddresses);
             Features.Set(InternalOptions);
         }
 
@@ -278,11 +278,11 @@ namespace Microsoft.AspNetCore.Server.Kestrel
             }
             catch (AggregateException ex) when (ex.InnerException is AddressInUseException)
             {
-                    throw new IOException($"Failed to bind to address {parsedAddress} on the IPv4 loopback interface: port already in use.", ex);
+                throw new IOException($"Failed to bind to address {parsedAddress} on the IPv4 loopback interface: port already in use.", ex);
             }
             catch (AggregateException ex)
             {
-                _logger.LogWarning(0,  $"Unable to bind to {parsedAddress} on the IPv4 loopback interface: ({ex.Message})");
+                _logger.LogWarning(0, $"Unable to bind to {parsedAddress} on the IPv4 loopback interface: ({ex.Message})");
                 exceptions.Add(ex.InnerException);
             }
 
@@ -329,4 +329,4 @@ namespace Microsoft.AspNetCore.Server.Kestrel
             return new IPEndPoint(ip, address.Port);
         }
     }
-}
+}

src/Microsoft.AspNetCore.Server.Kestrel.Core/Microsoft.AspNetCore.Server.Kestrel.Core.csproj

@@ -13,9 +13,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Libuv" Version="$(LibUvVersion)" />
-    <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.Net.Http.Headers" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Options" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="System.Numerics.Vectors" Version="$(CoreFxVersion)" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="$(CoreFxVersion)" />

src/Microsoft.AspNetCore.Server.Kestrel.Https/Internal/TlsConnectionFeature.cs

@@ -0,0 +1,21 @@
+// 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;
+using System.Security.Cryptography.X509Certificates;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http.Features;
+
+namespace Microsoft.AspNetCore.Server.Kestrel.Https.Internal
+{
+    internal class TlsConnectionFeature : ITlsConnectionFeature
+    {
+        public X509Certificate2 ClientCertificate { get; set; }
+
+        public Task<X509Certificate2> GetClientCertificateAsync(CancellationToken cancellationToken)
+        {
+            return Task.FromResult(ClientCertificate);
+        }
+    }
+}

src/Microsoft.AspNetCore.Server.Kestrel.Https/Microsoft.AspNetCore.Server.Kestrel.Https.csproj

@@ -16,6 +16,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
   </ItemGroup>
 

src/Microsoft.AspNetCore.Server.Kestrel/Microsoft.AspNetCore.Server.Kestrel.csproj

@@ -11,6 +11,10 @@
     <EnableApiCheck>false</EnableApiCheck>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="$(AspNetCoreVersion)" />
+  </ItemGroup>
+  
   <ItemGroup>
     <ProjectReference Include="..\Microsoft.AspNetCore.Server.Kestrel.Core\Microsoft.AspNetCore.Server.Kestrel.Core.csproj" />
     <ProjectReference Include="..\Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv\Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.csproj" />