Drop net6.0 target

Author: mus65

Directory.Build.props

@@ -31,7 +31,7 @@
   <!--
         Disable nullable warnings on old frameworks because of missing annotations.
   -->
-  <PropertyGroup Condition=" !$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0')) ">
+  <PropertyGroup Condition=" !$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0')) ">
     <NoWarn>$(NoWarn);CS8602;CS8604;CS8777</NoWarn>
   </PropertyGroup>
 

src/Renci.SshNet/Abstractions/CancellationTokenSourceExtensions.cs

@@ -1,16 +1,16 @@
+#if !NET
 using System.Threading;
 using System.Threading.Tasks;
 
 namespace Renci.SshNet.Abstractions
 {
     internal static class CancellationTokenSourceExtensions
     {
-#if !NET8_OR_GREATER
         public static Task CancelAsync(this CancellationTokenSource cancellationTokenSource)
         {
             cancellationTokenSource.Cancel();
             return Task.CompletedTask;
         }
-#endif
     }
 }
+#endif

src/Renci.SshNet/Abstractions/SocketAbstraction.Async.cs

@@ -1,4 +1,4 @@
-#if NET6_0_OR_GREATER
+#if NET
 
 using System;
 using System.Diagnostics;
@@ -47,4 +47,4 @@ static async ValueTask SendAsyncCore(Socket socket, ReadOnlyMemory<byte> data, C
         }
     }
 }
-#endif // NET6_0_OR_GREATER
+#endif // NET

src/Renci.SshNet/Abstractions/SocketAbstraction.cs

@@ -311,7 +311,7 @@ public static int Read(Socket socket, byte[] buffer, int offset, int size, TimeS
             return totalBytesRead;
         }
 
-#if NET6_0_OR_GREATER == false
+#if !NET
         public static Task<int> ReadAsync(Socket socket, byte[] buffer, CancellationToken cancellationToken)
         {
             return socket.ReceiveAsync(buffer, 0, buffer.Length, cancellationToken);

src/Renci.SshNet/Abstractions/SocketExtensions.cs

@@ -1,4 +1,4 @@
-#if !NET6_0_OR_GREATER
+#if !NET
 using System;
 using System.Net;
 using System.Net.Sockets;

src/Renci.SshNet/Common/Extensions.cs

@@ -48,7 +48,7 @@ internal static ServiceName ToServiceName(this byte[] data)
 
         internal static BigInteger ToBigInteger(this byte[] data)
         {
-#if NETSTANDARD2_1_OR_GREATER || NET6_0_OR_GREATER
+#if NETSTANDARD2_1_OR_GREATER || NET
             return new BigInteger(data, isBigEndian: true);
 #else
             var reversed = new byte[data.Length];
@@ -62,7 +62,7 @@ internal static BigInteger ToBigInteger(this byte[] data)
         /// </summary>
         public static BigInteger ToBigInteger2(this byte[] data)
         {
-#if NETSTANDARD2_1_OR_GREATER || NET6_0_OR_GREATER
+#if NETSTANDARD2_1_OR_GREATER || NET
             return new BigInteger(data, isBigEndian: true, isUnsigned: true);
 #else
             if ((data[0] & (1 << 7)) != 0)
@@ -95,7 +95,7 @@ public static byte[] ToByteArray(this BigInteger bigInt, bool isUnsigned = false
         }
 #endif
 
-#if !NET6_0_OR_GREATER
+#if !NET
         public static long GetBitLength(this BigInteger bigint)
         {
             // Taken from https://github.com/dotnet/runtime/issues/31308

src/Renci.SshNet/Common/SshDataStream.cs

@@ -139,7 +139,7 @@ public void Write(string s, Encoding encoding)
         {
             ThrowHelper.ThrowIfNull(encoding);
 
-#if NETSTANDARD2_1_OR_GREATER || NET6_0_OR_GREATER
+#if NETSTANDARD2_1_OR_GREATER || NET
             ReadOnlySpan<char> value = s;
             var count = encoding.GetByteCount(value);
             var bytes = count <= 256 ? stackalloc byte[count] : new byte[count];
@@ -207,7 +207,7 @@ public BigInteger ReadBigInt()
         {
             var data = ReadBinary();
 
-#if NETSTANDARD2_1_OR_GREATER || NET6_0_OR_GREATER
+#if NETSTANDARD2_1_OR_GREATER || NET
             return new BigInteger(data, isBigEndian: true);
 #else
             return new BigInteger(data.Reverse());

src/Renci.SshNet/Common/TaskToAsyncResult.cs

@@ -1,5 +1,5 @@
 #pragma warning disable
-#if !NET8_0_OR_GREATER
+#if !NET
 // Copied verbatim from https://github.com/dotnet/runtime/blob/78bd7debe6d8b454294c673c9cb969c6b8a14692/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs
 
 // Licensed to the .NET Foundation under one or more agreements.
@@ -35,7 +35,7 @@ static class TaskToAsyncResult
         /// </remarks>
         public static IAsyncResult Begin(Task task, AsyncCallback? callback, object? state)
         {
-#if NET6_0_OR_GREATER
+#if NET
             ArgumentNullException.ThrowIfNull(task);
 #else
             if (task is null)
@@ -72,7 +72,7 @@ public static TResult End<TResult>(IAsyncResult asyncResult) =>
         /// <exception cref="ArgumentException"><paramref name="asyncResult"/> was not produced by a call to <see cref="Begin"/>.</exception>
         public static Task Unwrap(IAsyncResult asyncResult)
         {
-#if NET6_0_OR_GREATER
+#if NET
             ArgumentNullException.ThrowIfNull(asyncResult);
 #else
             if (asyncResult is null)
@@ -101,7 +101,7 @@ public static Task Unwrap(IAsyncResult asyncResult)
         /// </exception>
         public static Task<TResult> Unwrap<TResult>(IAsyncResult asyncResult)
         {
-#if NET6_0_OR_GREATER
+#if NET
             ArgumentNullException.ThrowIfNull(asyncResult);
 #else
             if (asyncResult is null)

src/Renci.SshNet/Common/ThrowHelper.cs

@@ -9,7 +9,7 @@ internal static class ThrowHelper
     {
         public static void ThrowObjectDisposedIf(bool condition, object instance)
         {
-#if NET7_0_OR_GREATER
+#if NET
             ObjectDisposedException.ThrowIf(condition, instance);
 #else
             if (condition)
@@ -26,7 +26,7 @@ static void Throw(object? instance)
 
         public static void ThrowIfNull([NotNull] object? argument, [CallerArgumentExpression(nameof(argument))] string? paramName = null)
         {
-#if NET6_0_OR_GREATER
+#if NET
             ArgumentNullException.ThrowIfNull(argument, paramName);
 #else
             if (argument is null)
@@ -44,7 +44,7 @@ static void Throw(string? paramName)
 
         public static void ThrowIfNullOrWhiteSpace([NotNull] string? argument, [CallerArgumentExpression(nameof(argument))] string? paramName = null)
         {
-#if NET8_0_OR_GREATER
+#if NET
             ArgumentException.ThrowIfNullOrWhiteSpace(argument, paramName);
 #else
             if (string.IsNullOrWhiteSpace(argument))
@@ -63,7 +63,7 @@ static void Throw(string? argument, string? paramName)
 
         public static void ThrowIfNullOrEmpty([NotNull] string? argument, [CallerArgumentExpression(nameof(argument))] string? paramName = null)
         {
-#if NET7_0_OR_GREATER
+#if NET
             ArgumentException.ThrowIfNullOrEmpty(argument, paramName);
 #else
             if (string.IsNullOrEmpty(argument))

src/Renci.SshNet/Compression/Zlib.cs

@@ -1,5 +1,5 @@
 using System.IO;
-#if NET6_0_OR_GREATER
+#if NET
 using System.IO.Compression;
 #else
 using Org.BouncyCastle.Utilities.Zlib;
@@ -14,7 +14,7 @@ namespace Renci.SshNet.Compression
     public class Zlib : Compressor
 #pragma warning restore CA1724 // Type names should not match namespaces
     {
-#if NET6_0_OR_GREATER
+#if NET
         private readonly ZLibStream _compressor;
         private readonly ZLibStream _decompressor;
 #else
@@ -45,7 +45,7 @@ protected Zlib(bool delayedCompression)
             _compressorStream = new MemoryStream();
             _decompressorStream = new MemoryStream();
 
-#if NET6_0_OR_GREATER
+#if NET
             _compressor = new ZLibStream(_compressorStream, CompressionMode.Compress);
             _decompressor = new ZLibStream(_decompressorStream, CompressionMode.Decompress);
 #else
@@ -74,7 +74,7 @@ protected override byte[] CompressCore(byte[] data, int offset, int length)
         /// <inheritdoc/>
         protected override byte[] DecompressCore(byte[] data, int offset, int length)
         {
-#if NET6_0_OR_GREATER
+#if NET
             _decompressorStream.Write(data, offset, length);
             _decompressorStream.Position = 0;