GetConnectionString() not working when migrated to 2.4.2

Describe the bug

We have the below code in our application.

var mystring = Configuration.GetConnectionString("myKey");

Here Configuration is of type IConfiguration. But after migrating to Steeltoe 2.4.2 versions, it stopped working. Somehow GetConnectionString() is not able to get the values from PCF config server. Our Program.cs looks like below

public class Program
    {
       
        public static void Main(string[] args)
        {
            CreateWebHostBuilder(args).Build().Run();
        }

        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .UseStartup<Startup>()
                .ConfigureAppConfiguration((hostContext, configApp) =>
                {
                    configApp.AddCloudFoundry();
                    configApp.AddConfigServer();
                })
                .ConfigureLogging((builderContext, loggingBuilder) =>
                 {
                     // Add Serilog Dynamic Logger 
                     loggingBuilder.ClearProviders();
                     loggingBuilder.AddSerilogDynamicConsole();
                 })
                .AddCloudFoundryActuators(MediaTypeVersion.V2,
                    ActuatorContext.ActuatorAndCloudFoundry);
    }
}

Steeltoe versions are given below

<PropertyGroup>
    <TargetFramework>netcoreapp2.2</TargetFramework>
    <GenerateDocumentationFile>true</GenerateDocumentationFile>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.App" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Versioning.ApiExplorer" Version="3.2.0" />
    <PackageReference Include="Swashbuckle.AspNetCore" Version="4.0.1" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Versioning" Version="3.1.4" />
    <PackageReference Include="Steeltoe.Management.CloudFoundryCore" Version="2.4.2" />
    <PackageReference Include="Steeltoe.Extensions.Configuration.CloudFoundryCore" Version="2.4.2" />
    <PackageReference Include="Steeltoe.Extensions.Configuration.ConfigServerCore" Version="2.4.2" />
  </ItemGroup>

Expected behavior

Should be able to retrieve connection strings via IConfiguration.GetConnectionString().

Environment (please complete the following information):

• Platform: PCF
• .NET Version : .NET Core 2.2
• Steeltoe Version : 2.4.2

[TimHess]

Hey, sorry for the delay in getting back to you, I’ve been on vacation…

I was finally able to test this out, and this was fixed by #247

[sajanep]

Yes. I am able to get other values from config server if I respect the case. E.g. var myConstring = Configuration.Get("connectionstrings:myKey"); As per microsoft https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-3.1#keys, configuration keys are case insensitive. Looks like Steeltoe has broken this with v2.4.1+ onwards.