Merge branch 'SebastianGrief-add_proxy_guard' into dev

Author: alexeyzimarev

benchmarks/RestSharp.Benchmarks/RestSharp.Benchmarks.csproj

@@ -9,7 +9,7 @@
 
     <ItemGroup>
         <PackageReference Include="AutoFixture" Version="4.17.0" />
-        <PackageReference Include="BenchmarkDotNet" Version="0.13.1" />
+        <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
     </ItemGroup>
     <ItemGroup>
         <ProjectReference Include="..\..\src\RestSharp.Serializers.NewtonsoftJson\RestSharp.Serializers.NewtonsoftJson.csproj" />

src/Directory.Build.props

@@ -19,7 +19,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
-        <PackageReference Include="MinVer" Version="4.1.0" PrivateAssets="All"/>
+        <PackageReference Include="MinVer" Version="4.2.0" PrivateAssets="All"/>
         <PackageReference Include="JetBrains.Annotations" Version="2022.1.0" PrivateAssets="All"/>
     </ItemGroup>
     <ItemGroup>

src/RestSharp/RestClient.cs

@@ -139,7 +139,9 @@ void ConfigureHttpMessageHandler(HttpClientHandler handler) {
         handler.AutomaticDecompression = Options.AutomaticDecompression;
         handler.PreAuthenticate        = Options.PreAuthenticate;
         handler.AllowAutoRedirect      = Options.FollowRedirects;
-        handler.Proxy                  = Options.Proxy;
+        
+        if (handler.SupportsProxy)
+            handler.Proxy = Options.Proxy;
 
         if (Options.RemoteCertificateValidationCallback != null)
             handler.ServerCertificateCustomValidationCallback =

test/Directory.Build.props

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup Condition="$(IsTestProject) == 'true'">
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.1"/>
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" PrivateAssets="All"/>
         <PackageReference Include="coverlet.collector" Version="3.1.2"/>
     </ItemGroup>
@@ -18,7 +18,7 @@
         <PackageReference Include="FluentAssertions" Version="6.7.0"/>
     </ItemGroup>
     <ItemGroup Condition="$(TargetFramework) == 'net472'">
-        <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies.net472" Version="1.0.2" PrivateAssets="All"/>
+        <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies.net472" Version="1.0.3" PrivateAssets="All"/>
     </ItemGroup>
 
     <ItemGroup>