fix warnings

Author: DeagleGross

src/Servers/Connections.Abstractions/src/Features/ITlsAccessFeature.cs

@@ -8,7 +8,6 @@
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Connections.Abstractions.TLS;
 
 namespace Microsoft.AspNetCore.Connections.Features;
 

src/Servers/HttpSys/samples/TlsFeaturesObserve/HttpSys/HttpSysConfigurator.cs

@@ -79,7 +79,10 @@ static byte[] GetHash(string thumbprint)
         int length = thumbprint.Length;
         byte[] bytes = new byte[length / 2];
         for (int i = 0; i < length; i += 2)
+        {
             bytes[i / 2] = Convert.ToByte(thumbprint.Substring(i, 2), 16);
+        }
+
         return bytes;
     }
 
@@ -104,6 +107,8 @@ static void CallHttpApi(Action body)
         body();
     }
 
+// disabled warning since it is just a sample
+#pragma warning disable SYSLIB1054 // Use 'LibraryImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
     [DllImport("httpapi.dll", SetLastError = true)]
     private static extern uint HttpInitialize(
             HTTPAPI_VERSION version,
@@ -117,4 +122,5 @@ public static extern uint HttpSetServiceConfiguration(
         nint pConfigInformation,
         int configInformationLength,
         nint pOverlapped);
+#pragma warning restore SYSLIB1054 // Use 'LibraryImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
 }

src/Servers/HttpSys/src/RequestProcessing/Request.cs

@@ -8,7 +8,6 @@
 using System.Security.Cryptography;
 using System.Security.Cryptography.X509Certificates;
 using System.Security.Principal;
-using Microsoft.AspNetCore.Connections.Abstractions.TLS;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.HttpSys.Internal;
 using Microsoft.AspNetCore.Shared;