From 7849a10c939cc1543ab5535a8af0ec0baf503a08 Mon Sep 17 00:00:00 2001
From: Hugo Castro de Deco <hugodeco@sufficit.com.br>
Date: Wed, 11 Nov 2026 17:20:11 -0300
Subject: [PATCH] Fix netstandard dependency compatibility for pre-net8
 consumers

---
 .github/workflows/build.yml                           | 3 +++
 Directory.Packages.props                              | 5 ++++-
 src/Renci.SshNet/Renci.SshNet.csproj                  | 2 ++
 test/Renci.SshNet.Tests/Common/AsyncSocketListener.cs | 4 ++++
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2abbe4406..f768ff9e7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -44,6 +44,9 @@ jobs:
           -p:CoverletOutput=../../coverlet/linux_unit_test_net_10_coverage.xml \
           test/Renci.SshNet.Tests/
 
+    - name: Run Unit Tests against the .NET Standard asset
+      run: dotnet test -f net10.0 -p:SshNetTargetFramework=netstandard2.0 test/Renci.SshNet.Tests/
+
     - name: Run Integration Tests .NET
       run: |
         dotnet test \
diff --git a/Directory.Packages.props b/Directory.Packages.props
index 2ed0dc3e9..b34bbd61a 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -10,6 +10,7 @@
     <PackageVersion Include="coverlet.msbuild" Version="10.1.0" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="3.0.5" />
     <PackageVersion Include="Meziantou.Analyzer" Version="3.0.317" />
+    <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
     <!-- Should stay on LTS .NET releases. -->
     <PackageVersion Include="Microsoft.Bcl.Cryptography" Version="10.0.14" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.3" />
@@ -21,7 +22,9 @@
     <PackageVersion Include="SonarAnalyzer.CSharp" Version="10.35.0.4138" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
     <!-- Should stay on LTS .NET releases. -->
-    <PackageVersion Include="System.Formats.Asn1" Version="10.0.14" />
+    <!-- The netstandard2.0 asset must also work on consumers below .NET 8. -->
+    <PackageVersion Include="System.Formats.Asn1" Version="8.0.2" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
+    <PackageVersion Include="System.Formats.Asn1" Version="10.0.14" Condition="'$(TargetFramework)' != 'netstandard2.0'" />
     <PackageVersion Include="Testcontainers" Version="4.16.0" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/Renci.SshNet/Renci.SshNet.csproj b/src/Renci.SshNet/Renci.SshNet.csproj
index 9b7af1590..1a629cd0a 100644
--- a/src/Renci.SshNet/Renci.SshNet.csproj
+++ b/src/Renci.SshNet/Renci.SshNet.csproj
@@ -5,6 +5,7 @@
     <Product>SSH.NET</Product>
     <AssemblyTitle>SSH.NET</AssemblyTitle>
     <TargetFrameworks>net462;netstandard2.0;net8.0;net9.0;net10.0</TargetFrameworks>
+    <TargetFrameworks Condition="'$(SshNetTargetFramework)' != ''">$(SshNetTargetFramework)</TargetFrameworks>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -54,6 +55,7 @@
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
+    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" />
     <PackageReference Include="System.Formats.Asn1" />
   </ItemGroup>
 
diff --git a/test/Renci.SshNet.Tests/Common/AsyncSocketListener.cs b/test/Renci.SshNet.Tests/Common/AsyncSocketListener.cs
index 575d37160..ae0285a83 100644
--- a/test/Renci.SshNet.Tests/Common/AsyncSocketListener.cs
+++ b/test/Renci.SshNet.Tests/Common/AsyncSocketListener.cs
@@ -5,6 +5,10 @@
 using System.Net.Sockets;
 using System.Threading;
 
+#if NET9_0_OR_GREATER
+using Lock = System.Threading.Lock;
+#endif
+
 using Renci.SshNet.Common;
 #pragma warning restore IDE0005