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Comments on How to find out which packages target .NET 3.1 in a .NET 5 application?
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How to find out which packages target .NET 3.1 in a .NET 5 application?
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After upgrading a Web application from ASP.NET Core 3.1 to ASP.NET Core 5.0, it worked fine on an existing server.
However, when deployed on a server that had only .NET 5.0 installed, the application pool crashed and said (as a logged event) that .NET Core 3.1 is missing.
Clearly, some packages were not fully upgraded. The target framework is 5.0 for all projects and all Microsoft.* NuGet packages are using 5.* versions (e.g. EntityFramework).
I am wondering how can I find which packages (or other settings?) still require .NET 3.1.
I found dotnet list package for listing all solution packages and tried the following:
dotnet list Ubisoft.PtbNext.sln package --include-transitive --outdated --highest-minor
which provided all packages, including the "transitive" ones:
The following sources were used:
https://api.nuget.org/v3/index.json
https://artifactory.Foo.org/api/nuget/nuget/
C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\
Project `Foo.Bar.WebApi` has the following updates to its packages
[net5.0]:
Top-level Package Requested Resolved Latest
> Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 5.0.5 5.0.5 5.0.6
> Microsoft.AspNetCore.Mvc.NewtonsoftJson 5.0.5 5.0.5 5.0.6
> Microsoft.AspNetCore.SpaServices.Extensions 5.0.5 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore 5.0.5 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Tools 5.0.5 5.0.5 5.0.6
> Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore 5.0.5 5.0.5 5.0.6
> Microsoft.Identity.Web 1.9.1 1.9.1 1.12.0
> NLog.Schema 4.7.9 4.7.9 4.7.10
> NLog.WindowsIdentity 4.7.9 4.7.9 4.7.10
> Swashbuckle.AspNetCore 6.1.3 6.1.3 6.1.4
Transitive Package Resolved Latest
> Azure.Core 1.4.1 1.14.0
> Azure.Identity 1.2.3 1.4.0
> FluentValidation 10.0.4 10.2.2
> FluentValidation.DependencyInjectionExtensions 10.0.4 10.2.2
> Humanizer.Core 2.8.26 2.10.1
> Microsoft.AspNet.WebApi.Client 5.2.4 5.2.7
> Microsoft.AspNetCore.Authentication.JwtBearer 5.0.0 5.0.6
> Microsoft.AspNetCore.Authentication.OpenIdConnect 5.0.0 5.0.6
> Microsoft.AspNetCore.JsonPatch 5.0.5 5.0.6
> Microsoft.Bcl.AsyncInterfaces 1.0.0 1.1.1
> Microsoft.Data.SqlClient 2.0.1 2.1.3
> Microsoft.Data.SqlClient.SNI.runtime 2.0.1 2.1.1
> Microsoft.EntityFrameworkCore.Abstractions 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Analyzers 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Design 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.InMemory 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Relational 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.SqlServer 5.0.5 5.0.6
> Microsoft.Extensions.ApiDescription.Server 3.0.0 3.1.15
> Microsoft.Extensions.Diagnostics.HealthChecks 5.0.5 5.0.6
> Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions 5.0.5 5.0.6
> Microsoft.Extensions.Primitives 5.0.0 5.0.1
> Microsoft.Identity.Client 4.29.0 4.31.0
> Microsoft.Identity.Client.Extensions.Msal 2.12.0 2.18.4
> Microsoft.IdentityModel.JsonWebTokens 6.10.1 6.11.1
> Microsoft.IdentityModel.Logging 6.10.1 6.11.1
> Microsoft.IdentityModel.Protocols 6.10.1 6.11.1
> Microsoft.IdentityModel.Protocols.OpenIdConnect 6.10.1 6.11.1
> Microsoft.IdentityModel.Tokens 6.10.1 6.11.1
> Microsoft.Net.Http.Headers 2.2.0 2.2.8
> Microsoft.NETCore.Platforms 5.0.0 5.0.2
> Microsoft.NETCore.Targets 1.1.0 1.1.4
> NLog 4.7.9 4.7.10
> RabbitMQ.Client 5.0.1 5.2.0
> runtime.debian.8-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.fedora.23-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.fedora.24-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.native.System 4.3.0 4.3.1
> runtime.native.System.IO.Compression 4.3.0 4.3.2
> runtime.native.System.Net.Http 4.3.0 4.3.1
> runtime.native.System.Net.Security 4.3.0 4.3.1
> runtime.native.System.Security.Cryptography.Apple 4.3.0 4.3.1
> runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.opensuse.13.2-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.opensuse.42.1-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.Apple 4.3.0 4.3.1
> runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.rhel.7-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.ubuntu.14.04-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.ubuntu.16.04-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.ubuntu.16.10-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> Swashbuckle.AspNetCore.Swagger 6.1.3 6.1.4
> Swashbuckle.AspNetCore.SwaggerGen 6.1.3 6.1.4
> Swashbuckle.AspNetCore.SwaggerUI 6.1.3 6.1.4
> System.Buffers 4.5.0 4.5.1
> System.Console 4.3.0 4.3.1
> System.Drawing.Common 5.0.0 5.0.2
> System.IdentityModel.Tokens.Jwt 6.10.1 6.11.1
> System.IO.Pipelines 4.5.2 4.7.4
> System.Linq.Dynamic.Core 1.2.9 1.2.10
> System.Memory 4.5.3 4.5.4
> System.Net.Http 4.3.0 4.3.4
> System.Net.Primitives 4.3.0 4.3.1
> System.Net.Security 4.3.0 4.3.2
> System.Reflection.Emit.ILGeneration 4.3.0 4.7.0
> System.Reflection.Emit.Lightweight 4.3.0 4.7.0
> System.Reflection.TypeExtensions 4.3.0 4.7.0
> System.Runtime 4.3.0 4.3.1
> System.Runtime.CompilerServices.Unsafe 4.5.1 4.7.1
> System.Runtime.Extensions 4.3.0 4.3.1
> System.Security.Cryptography.Algorithms 4.3.0 4.3.1
> System.Security.Cryptography.Cng 4.5.0 4.7.0
> System.Security.Cryptography.OpenSsl 4.3.0 4.7.0
> System.Security.Cryptography.Pkcs 4.5.0 4.7.0
> System.Security.Cryptography.X509Certificates 4.3.0 4.3.2
> System.Security.Cryptography.Xml 4.5.0 4.7.0
> System.Text.Encoding.CodePages 4.7.0 4.7.1
> System.Text.RegularExpressions 4.3.0 4.3.1
> System.Threading.Tasks.Extensions 4.5.2 4.5.4
> System.Xml.ReaderWriter 4.3.0 4.3.1
> Foo.Bar.ODataNuget 1.0.0.19 1.0.0.23
Project `Foo.Bar.Application` has the following updates to its packages
[net5.0]:
Top-level Package Requested Resolved Latest
> FluentValidation.DependencyInjectionExtensions 10.0.4 10.0.4 10.2.2
> Microsoft.EntityFrameworkCore 5.0.5 5.0.5 5.0.6
> System.Linq.Dynamic.Core 1.2.9 1.2.9 1.2.10
Transitive Package Resolved Latest
> FluentValidation 10.0.4 10.2.2
> Microsoft.EntityFrameworkCore.Abstractions 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Analyzers 5.0.5 5.0.6
> Microsoft.Extensions.Primitives 5.0.0 5.0.1
> Microsoft.Net.Http.Headers 2.2.0 2.2.8
> NLog 4.7.9 4.7.10
> System.Buffers 4.5.0 4.5.1
> System.Text.Encodings.Web 4.5.0 4.7.2
> Foo.Bar.Common 1.0.0 Not found at the sources
> Foo.Bar.Domain 1.0.0 Not found at the sources
Project `Foo.Bar.Domain` has the following updates to its packages
[net5.0]:
Top-level Package Requested Resolved Latest
> FluentValidation.DependencyInjectionExtensions 10.0.4 10.0.4 10.2.2
Transitive Package Resolved Latest
> FluentValidation 10.0.4 10.2.2
> Microsoft.EntityFrameworkCore 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Abstractions 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Analyzers 5.0.5 5.0.6
> Microsoft.Extensions.Primitives 5.0.0 5.0.1
> Microsoft.Net.Http.Headers 2.2.0 2.2.8
> NLog 4.7.9 4.7.10
> System.Buffers 4.5.0 4.5.1
> System.Text.Encodings.Web 4.5.0 4.7.2
> Foo.Bar.Common 1.0.0 Not found at the sources
Project `Foo.Bar.Infrastructure` has the following updates to its packages
[net5.0]:
Top-level Package Requested Resolved Latest
> Microsoft.EntityFrameworkCore 5.0.5 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.InMemory 5.0.5 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.SqlServer 5.0.5 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Tools 5.0.5 5.0.5 5.0.6
> NLog 4.7.9 4.7.9 4.7.10
> Foo.Bar.ODataNuget 1.0.0.19 1.0.0.19 1.0.0.23
Transitive Package Resolved Latest
> FluentValidation 10.0.4 10.2.2
> FluentValidation.DependencyInjectionExtensions 10.0.4 10.2.2
> Humanizer.Core 2.8.26 2.10.1
> Microsoft.AspNet.WebApi.Client 5.2.4 5.2.7
> Microsoft.Data.SqlClient 2.0.1 2.1.3
> Microsoft.Data.SqlClient.SNI.runtime 2.0.1 2.1.1
> Microsoft.EntityFrameworkCore.Abstractions 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Analyzers 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Design 5.0.5 5.0.6
> Microsoft.EntityFrameworkCore.Relational 5.0.5 5.0.6
> Microsoft.Extensions.Primitives 5.0.0 5.0.1
> Microsoft.Identity.Client 4.14.0 4.31.0
> Microsoft.Net.Http.Headers 2.2.0 2.2.8
> Microsoft.NETCore.Platforms 5.0.0 5.0.2
> Microsoft.NETCore.Targets 1.1.3 1.1.4
> Newtonsoft.Json.Bson 1.0.1 1.0.2
> RabbitMQ.Client 5.0.1 5.2.0
> runtime.debian.8-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.fedora.23-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.fedora.24-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.native.System 4.3.0 4.3.1
> runtime.native.System.IO.Compression 4.3.0 4.3.2
> runtime.native.System.Net.Http 4.3.0 4.3.1
> runtime.native.System.Net.Security 4.3.0 4.3.1
> runtime.native.System.Security.Cryptography.Apple 4.3.0 4.3.1
> runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.opensuse.13.2-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.opensuse.42.1-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.Apple 4.3.0 4.3.1
> runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.rhel.7-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.ubuntu.14.04-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.ubuntu.16.04-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> runtime.ubuntu.16.10-x64.runtime.native.System.Security.Cryptography.OpenSsl 4.3.0 4.3.3
> System.Buffers 4.5.0 4.5.1
> System.Console 4.3.0 4.3.1
> System.Drawing.Common 5.0.0 5.0.2
> System.IO.Pipelines 4.5.2 4.7.4
> System.Linq.Dynamic.Core 1.2.9 1.2.10
> System.Memory 4.5.1 4.5.4
> System.Net.Http 4.3.0 4.3.4
> System.Net.Primitives 4.3.0 4.3.1
> System.Net.Security 4.3.0 4.3.2
> System.Reflection.Emit.ILGeneration 4.3.0 4.7.0
> System.Reflection.Emit.Lightweight 4.3.0 4.7.0
> System.Reflection.TypeExtensions 4.3.0 4.7.0
> System.Runtime 4.3.0 4.3.1
> System.Runtime.CompilerServices.Unsafe 4.5.1 4.7.1
> System.Runtime.Extensions 4.3.0 4.3.1
> System.Security.Cryptography.Algorithms 4.3.0 4.3.1
> System.Security.Cryptography.Cng 4.5.0 4.7.0
> System.Security.Cryptography.OpenSsl 4.3.0 4.7.0
> System.Security.Cryptography.Pkcs 4.5.0 4.7.0
> System.Security.Cryptography.X509Certificates 4.3.0 4.3.2
> System.Security.Cryptography.Xml 4.5.0 4.7.0
> System.Text.Encoding.CodePages 4.7.0 4.7.1
> System.Text.Encodings.Web 4.5.0 4.7.2
> System.Text.RegularExpressions 4.3.0 4.3.1
> System.Threading.Tasks.Extensions 4.3.0 4.5.4
> System.Xml.ReaderWriter 4.3.0 4.3.1
> Foo.Bar.Application 1.0.0 Not found at the sources
> Foo.Bar.Common 1.0.0 Not found at the sources
> Foo.Bar.Domain 1.0.0 Not found at the sources
I have checked the list, but I cannot figure out how can I deduct which package is to blame for not using .NET 5.
Any idea about how to find out the culprit?
Post
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You could start to track down the problem by using Assembly.LoadFrom() to attempt loading each library individually.
I have a routine in a .NET 5 solution that performs some analysis on assemblies deployed with my application. I retooled it a bit here to make something that would work as part of a console application your could run in your .NET 5 only environment as a step in the debugging process.
// Look for DLL plugins
foreach (string pluginDll in Directory.GetFiles(".", "*.dll", SearchOption.AllDirectories))
{
try
{
Console.WriteLine("Attempting to load " + pluginDll);
Assembly.LoadFrom(pluginDll);
Console.WriteLine(pluginDll + " Loaded");
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex);
}
}
If you run this from the location of your application, it will try to load all dlls and will give you feedback about which ones can and can't load.
A full working code in .NET 5 that shows a meaningful string to identify the target framework:
static void Main(string[] args)
{
var dirPath = "full path to directory containing all assemblies";
var loadedDlls = new HashSet<string>();
foreach (string pluginDll in Directory.GetFiles(dirPath, "*.dll", SearchOption.AllDirectories))
{
string filename = Path.GetFileName(pluginDll);
if (loadedDlls.Contains(filename))
{
Console.WriteLine($"{filename} already loaded");
continue;
}
try
{
Console.WriteLine("Attempting to load " + pluginDll);
var assembly = Assembly.LoadFrom(pluginDll);
var targetFwk = assembly.CustomAttributes.FirstOrDefault(a => a.AttributeType == typeof(TargetFrameworkAttribute));
Console.WriteLine($"{pluginDll}: Target fwk = {targetFwk?.ConstructorArguments[0].Value}");
loadedDlls.Add(filename);
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex);
}
}
}
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