Upgrade to support .NET 9

.github/workflows/pull-request.yml

@@ -23,15 +23,22 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        dotnet: ['net48', 'net6.0', 'net7.0', 'net8.0']
+        dotnet: ['net48', 'net8.0', 'net9.0']
 
     steps:
       -
         name: Checkout
         uses: actions/checkout@v4
+      -
+        name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: |
+            8.0.x
+            9.0.x
       -
         name: Run tests
-        run: dotnet test -f ${{ matrix.dotnet }}
+        run: dotnet test -c Debug -f ${{ matrix.dotnet }}
       -
         name: Upload Test Results
         if: always()
@@ -47,12 +54,19 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        dotnet: ['net6.0', 'net7.0', 'net8.0']
+        dotnet: ['net8.0', 'net9.0']
 
     steps:
       -  
         name: Checkout
         uses: actions/checkout@v4
+      -
+        name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: |
+            8.0.x
+            9.0.x
       -  
         name: Run tests
         run: dotnet test -f ${{ matrix.dotnet }}

Directory.Packages.props

@@ -1,49 +1,46 @@
 <Project>
-  <PropertyGroup>
-    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
-  </PropertyGroup>
-  <PropertyGroup Label="Package versions for .NET 6" Condition="$(TargetFramework) == 'net6.0'">
-    <MicrosoftTestHostVer>[6.0.28,7)</MicrosoftTestHostVer>
-  </PropertyGroup>
-  <PropertyGroup Label="Package versions for .NET 7" Condition="$(TargetFramework) == 'net7.0'">
-    <MicrosoftTestHostVer>7.0.17</MicrosoftTestHostVer>
-  </PropertyGroup>
-  <PropertyGroup Label="Package versions for .NET 8" Condition="$(TargetFramework) == 'net8.0'">
-    <MicrosoftTestHostVer>8.0.3</MicrosoftTestHostVer>
-  </PropertyGroup>
-  <ItemGroup Label="Runtime dependencies">
-    <PackageVersion Include="HttpMultipartParser" Version="8.4.0" />
-    <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageVersion Include="CsvHelper" Version="33.0.1" />
-    <PackageVersion Include="PolySharp" Version="1.14.1" />
-    <PackageVersion Include="System.Text.Json" Version="8.0.4" />
-    <PackageVersion Include="WireMock.Net" Version="1.5.60" />
-    <PackageVersion Include="WireMock.Net.FluentAssertions" Version="1.5.51" />
-  </ItemGroup>
-  <ItemGroup Label="Compile dependencies">
-    <PackageVersion Include="BenchmarkDotNet" Version="0.13.12" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.10.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" />
-    <PackageVersion Include="MinVer" Version="5.0.0" />
-    <PackageVersion Include="Nullable" Version="1.3.1" />
-    <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies.net472" Version="1.0.3" />
-    <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
-    <PackageVersion Include="JetBrains.Annotations" Version="2024.2.0" />
-  </ItemGroup>
-  <ItemGroup Label="Testing dependencies">
-    <PackageVersion Include="AutoFixture" Version="4.18.1" />
-    <PackageVersion Include="coverlet.collector" Version="6.0.2" />
-    <PackageVersion Include="FluentAssertions" Version="6.12.0" />
-    <PackageVersion Include="HttpTracer" Version="2.1.1" />
-    <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="$(MicrosoftTestHostVer)" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageVersion Include="Moq" Version="4.20.70" />
-    <PackageVersion Include="Polly" Version="8.4.1" />
-    <PackageVersion Include="rest-mock-core" Version="0.7.12" />
-    <PackageVersion Include="RichardSzalay.MockHttp" Version="7.0.0" />
-    <PackageVersion Include="System.Net.Http.Json" Version="8.0.0" />
-    <PackageVersion Include="Xunit.Extensions.Logging" Version="1.1.0" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="All" />
-    <PackageVersion Include="xunit" Version="2.9.0" />
-  </ItemGroup>
+    <PropertyGroup>
+        <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+    </PropertyGroup>
+    <PropertyGroup Label="Package versions for .NET 8" Condition="$(TargetFramework) == 'net8.0'">
+        <MicrosoftTestHostVer>8.0.3</MicrosoftTestHostVer>
+    </PropertyGroup>
+    <PropertyGroup Label="Package versions for .NET 9" Condition="$(TargetFramework) == 'net9.0'">
+        <MicrosoftTestHostVer>9.0.0</MicrosoftTestHostVer>
+    </PropertyGroup>
+    <ItemGroup Label="Runtime dependencies">
+        <PackageVersion Include="Newtonsoft.Json" Version="13.0.3"/>
+        <PackageVersion Include="CsvHelper" Version="33.0.1"/>
+        <PackageVersion Include="System.Text.Json" Version="9.0.0"/>
+    </ItemGroup>
+    <ItemGroup Label="Compile dependencies">
+        <PackageVersion Include="BenchmarkDotNet" Version="0.14.0"/>
+        <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0"/>
+        <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0"/>
+        <PackageVersion Include="MinVer" Version="6.0.0"/>
+        <PackageVersion Include="Nullable" Version="1.3.1"/>
+        <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies.net472" Version="1.0.3"/>
+        <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0"/>
+        <PackageVersion Include="JetBrains.Annotations" Version="2024.3.0"/>
+    </ItemGroup>
+    <ItemGroup Label="Testing dependencies">
+        <PackageVersion Include="HttpMultipartParser" Version="8.4.0"/>
+        <PackageVersion Include="PolySharp" Version="1.15.0"/>
+        <PackageVersion Include="AutoFixture" Version="4.18.1"/>
+        <PackageVersion Include="coverlet.collector" Version="6.0.2"/>
+        <PackageVersion Include="FluentAssertions" Version="7.0.0"/>
+        <PackageVersion Include="HttpTracer" Version="2.1.1"/>
+        <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="$(MicrosoftTestHostVer)"/>
+        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0"/>
+        <PackageVersion Include="Moq" Version="4.20.72"/>
+        <PackageVersion Include="Polly" Version="8.5.0"/>
+        <PackageVersion Include="rest-mock-core" Version="0.7.12"/>
+        <PackageVersion Include="RichardSzalay.MockHttp" Version="7.0.0"/>
+        <PackageVersion Include="System.Net.Http.Json" Version="9.0.0"/>
+        <PackageVersion Include="Xunit.Extensions.Logging" Version="1.1.0"/>
+        <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="All"/>
+        <PackageVersion Include="xunit" Version="2.9.2"/>
+        <PackageVersion Include="WireMock.Net" Version="1.6.10"/>
+        <PackageVersion Include="WireMock.Net.FluentAssertions" Version="1.5.51"/>
+    </ItemGroup>
 </Project>

benchmarks/RestSharp.Benchmarks/RestSharp.Benchmarks.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net7.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <IsPackable>false</IsPackable>
         <LangVersion>preview</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>

gen/SourceGenerator/Extensions.cs

@@ -21,7 +21,7 @@ public static IEnumerable<ClassDeclarationSyntax> FindClasses(this Compilation c
             .SelectMany(model => model.SyntaxTree.GetRoot().DescendantNodes().OfType<ClassDeclarationSyntax>())
             .Where(predicate);
 
-    public static IEnumerable<ClassDeclarationSyntax> FindAnnotatedClass(this Compilation compilation, string attributeName, bool strict) {
+    public static IEnumerable<ClassDeclarationSyntax> FindAnnotatedClasses(this Compilation compilation, string attributeName, bool strict) {
         return compilation.FindClasses(
             syntax => syntax.AttributeLists.Any(list => list.Attributes.Any(CheckAttribute))
         );

gen/SourceGenerator/ImmutableGenerator.cs

@@ -15,18 +15,28 @@
 
 namespace SourceGenerator;
 
-[Generator]
-public class ImmutableGenerator : ISourceGenerator {
-    public void Initialize(GeneratorInitializationContext context) { }
-
-    public void Execute(GeneratorExecutionContext context) {
-        var compilation = context.Compilation;
+[Generator(LanguageNames.CSharp)]
+public class ImmutableGenerator : IIncrementalGenerator {
+    public void Initialize(IncrementalGeneratorInitializationContext context) {
+        var c = context.CompilationProvider.SelectMany((x, _) => GetImmutableClasses(x));
+
+        context.RegisterSourceOutput(
+            c.Collect(),
+            static (ctx, sources) => {
+                foreach (var source in sources) {
+                    ctx.AddSource(source.Item1, source.Item2);
+                }
+            }
+        );
+        return;
 
-        var mutableClasses = compilation.FindAnnotatedClass("GenerateImmutable", strict: true);
+        IEnumerable<(string, SourceText)> GetImmutableClasses(Compilation compilation) {
+            var mutableClasses = compilation.FindAnnotatedClasses("GenerateImmutable", strict: true);
 
-        foreach (var mutableClass in mutableClasses) {
-            var immutableClass = GenerateImmutableClass(mutableClass, compilation);
-            context.AddSource($"ReadOnly{mutableClass.Identifier.Text}.cs", SourceText.From(immutableClass, Encoding.UTF8));
+            foreach (var mutableClass in mutableClasses) {
+                var immutableClass = GenerateImmutableClass(mutableClass, compilation);
+                yield return ($"ReadOnly{mutableClass.Identifier.Text}.cs", SourceText.From(immutableClass, Encoding.UTF8));
+            }
         }
     }
 

gen/SourceGenerator/InheritedCloneGenerator.cs

@@ -14,37 +14,44 @@
 
 namespace SourceGenerator;
 
-[Generator]
-public class InheritedCloneGenerator : ISourceGenerator {
+[Generator(LanguageNames.CSharp)]
+public class InheritedCloneGenerator : IIncrementalGenerator {
     const string AttributeName = "GenerateClone";
 
-    public void Initialize(GeneratorInitializationContext context) { }
-
-    public void Execute(GeneratorExecutionContext context) {
-        var compilation = context.Compilation;
-
-        var candidates = compilation.FindAnnotatedClass(AttributeName, false);
-
-        foreach (var candidate in candidates) {
-            var semanticModel      = compilation.GetSemanticModel(candidate.SyntaxTree);
-            var genericClassSymbol = semanticModel.GetDeclaredSymbol(candidate);
-            if (genericClassSymbol == null) continue;
-
-            // Get the method name from the attribute Name argument
-            var attributeData = genericClassSymbol.GetAttributes().FirstOrDefault(a => a.AttributeClass?.Name == $"{AttributeName}Attribute");
-            var methodName    = (string)attributeData.NamedArguments.FirstOrDefault(arg => arg.Key == "Name").Value.Value;
-
-            // Get the generic argument type where properties need to be copied from
-            var attributeSyntax = candidate.AttributeLists
-                .SelectMany(l => l.Attributes)
-                .FirstOrDefault(a => a.Name.ToString().StartsWith(AttributeName));
-            if (attributeSyntax == null) continue; // This should never happen
-
-            var typeArgumentSyntax = ((GenericNameSyntax)attributeSyntax.Name).TypeArgumentList.Arguments[0];
-            var typeSymbol         = (INamedTypeSymbol)semanticModel.GetSymbolInfo(typeArgumentSyntax).Symbol;
-
-            var code = GenerateMethod(candidate, genericClassSymbol, typeSymbol, methodName);
-            context.AddSource($"{genericClassSymbol.Name}.Clone.g.cs", SourceText.From(code, Encoding.UTF8));
+    public void Initialize(IncrementalGeneratorInitializationContext context) {
+        var c = context.CompilationProvider.SelectMany((x, _) => GetClones(x));
+
+        context.RegisterSourceOutput(
+            c.Collect(),
+            static (ctx, sources) => {
+                foreach (var source in sources) {
+                    ctx.AddSource(source.Item1, source.Item2);
+                }
+            }
+        );
+        return;
+
+        IEnumerable<(string, SourceText)> GetClones(Compilation compilation) {
+            var candidates = compilation.FindAnnotatedClasses(AttributeName, false);
+
+            foreach (var candidate in candidates) {
+                var semanticModel      = compilation.GetSemanticModel(candidate.SyntaxTree);
+                var genericClassSymbol = semanticModel.GetDeclaredSymbol(candidate);
+                if (genericClassSymbol == null) continue;
+
+                var attributeData = genericClassSymbol.GetAttributes().FirstOrDefault(a => a.AttributeClass?.Name == $"{AttributeName}Attribute");
+                var methodName    = (string)attributeData.NamedArguments.FirstOrDefault(arg => arg.Key == "Name").Value.Value;
+                var baseType      = attributeData.NamedArguments.FirstOrDefault(arg => arg.Key == "BaseType").Value.Value;
+
+                // Get the generic argument type where properties need to be copied from
+                var attributeSyntax = candidate.AttributeLists
+                    .SelectMany(l => l.Attributes)
+                    .FirstOrDefault(a => a.Name.ToString().StartsWith(AttributeName));
+                if (attributeSyntax == null) continue; // This should never happen
+
+                var code = GenerateMethod(candidate, genericClassSymbol, (INamedTypeSymbol)baseType, methodName);
+                yield return ($"{genericClassSymbol.Name}.Clone.g.cs", SourceText.From(code, Encoding.UTF8));
+            }
         }
     }
 

src/Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
     <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildProjectDirectory), 'RestSharp.sln'))\props\Common.props"/>
     <PropertyGroup>
-        <TargetFrameworks>netstandard2.0;net471;net48;net6.0;net7.0;net8.0</TargetFrameworks>
+        <TargetFrameworks>netstandard2.0;net471;net48;net8.0;net9.0</TargetFrameworks>
         <PackageIcon>restsharp.png</PackageIcon>
         <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
         <PackageProjectUrl>https://restsharp.dev</PackageProjectUrl>

src/RestSharp/Authenticators/OAuth/OAuthTools.cs

@@ -83,12 +83,6 @@ public static string GetNonce() {
     /// </summary>
     /// <param name="value">The value to escape.</param>
     /// <returns>The escaped value.</returns>
-    /// <remarks>
-    /// The <see cref="Uri.EscapeDataString" /> method is <i>supposed</i> to take on
-    /// RFC 3986 behavior if certain elements are present in a .config file.  Even if this
-    /// actually worked (which in my experiments it <i>doesn't</i>), we can't rely on every
-    /// host actually having this configuration element present.
-    /// </remarks>
     [return: NotNullIfNotNull(nameof(value))]
     public static string? UrlEncodeRelaxed(string? value) {
         if (value == null) return null;

src/RestSharp/Extensions/GenerateImmutableAttribute.cs

@@ -19,8 +19,9 @@ namespace RestSharp.Extensions;
 class GenerateImmutableAttribute : Attribute;
 
 [AttributeUsage(AttributeTargets.Class)]
-class GenerateCloneAttribute<T> : Attribute where T : class {
-    public string? Name { get; set; }
+class GenerateCloneAttribute : Attribute {
+    public Type?   BaseType { get; set; }
+    public string? Name     { get; set; }
 };
 
 [AttributeUsage(AttributeTargets.Property)]

src/RestSharp/Options/RestClientOptions.cs

@@ -181,16 +181,6 @@ public RestClientOptions(string baseUrl) : this(new Uri(Ensure.NotEmptyString(ba
     /// </summary>
     public CookieContainer? CookieContainer { get; set; }
 
-    /// <summary>
-    /// Maximum request duration in milliseconds. When the request timeout is specified using <seealso cref="RestRequest.Timeout"/>,
-    /// the lowest value between the client timeout and request timeout will be used.
-    /// </summary>
-    [Obsolete("Use Timeout instead.")]
-    public int MaxTimeout {
-        get => (int) (Timeout?.TotalMilliseconds ?? 0);
-        set => Timeout = TimeSpan.FromMilliseconds(value);
-    }
-
     /// <summary>
     /// Request duration. Used when the request timeout is not specified using <seealso cref="RestRequest.Timeout"/>,
     /// </summary>

src/RestSharp/Response/RestResponse.cs

@@ -24,7 +24,7 @@ namespace RestSharp;
 /// Container for data sent back from API including deserialized data
 /// </summary>
 /// <typeparam name="T">Type of data to deserialize to</typeparam>
-[GenerateClone<RestResponse>(Name = "FromResponse")]
+[GenerateClone(BaseType = typeof(RestResponse), Name = "FromResponse")]
 [DebuggerDisplay($"{{{nameof(DebuggerDisplay)}()}}")]
 public partial class RestResponse<T>(RestRequest request) : RestResponse(request) {
     /// <summary>

src/RestSharp/RestSharp.csproj

@@ -12,9 +12,6 @@
     <ItemGroup Condition="$(AddPolyfills) == 'true'">
         <PackageReference Include="Nullable" PrivateAssets="All"/>
     </ItemGroup>
-    <ItemGroup Condition="$(AddSystemTextJson) == 'true'">
-        <PackageReference Include="System.Text.Json"/>
-    </ItemGroup>
     <ItemGroup>
         <Compile Update="RestClient.Extensions.Params.cs">
             <DependentUpon>RestClient.Extensions.cs</DependentUpon>
@@ -63,12 +60,21 @@
         </Compile>
     </ItemGroup>
     <ItemGroup Label="Source generator">
-        <ProjectReference Include="$(RepoRoot)\gen\SourceGenerator\SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false"/>
+        <ProjectReference Include="$(RepoRoot)\gen\SourceGenerator\SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
     </ItemGroup>
     <ItemGroup Label="Package README">
-        <None Include="..\..\README.md" Pack="true" PackagePath="\"/>
+        <None Include="..\..\README.md" Pack="true" PackagePath="\" />
     </ItemGroup>
     <ItemGroup>
-        <Using Include="System.Net"/>
+        <Using Include="System.Net" />
+    </ItemGroup>
+    <ItemGroup Condition="'$(TargetFramework)' == 'net471'">
+      <PackageReference Include="System.Text.Json" />
+    </ItemGroup>
+    <ItemGroup Condition="'$(TargetFramework)' == 'net48'">
+      <PackageReference Include="System.Text.Json" />
+    </ItemGroup>
+    <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+      <PackageReference Include="System.Text.Json" />
     </ItemGroup>
 </Project>

test/Directory.Build.props

@@ -3,7 +3,7 @@
     <PropertyGroup>
         <IsTestProject>true</IsTestProject>
         <IsPackable>false</IsPackable>
-        <TargetFrameworks>net48;net6.0;net7.0;net8.0</TargetFrameworks>
+        <TargetFrameworks>net48;net8.0;net9.0</TargetFrameworks>
         <Nullable>disable</Nullable>
         <NoWarn>xUnit1033</NoWarn>
         <VSTestLogger>trx%3bLogFileName=$(MSBuildProjectName).trx</VSTestLogger>

test/RestSharp.InteractiveTests/RestSharp.InteractiveTests.csproj

@@ -2,7 +2,7 @@
     <PropertyGroup>
         <OutputType>Exe</OutputType>
         <IsTestProject>false</IsTestProject>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
     </PropertyGroup>
     <ItemGroup>
         <ProjectReference Include="$(RepoRoot)\src\RestSharp\RestSharp.csproj" />