private static string GetNetCoreVersion()

in src/Elastic.Transport/Requests/MetaData/RuntimeVersionInfo.cs [88:131]

34 lines of code
7 McCabe index (conditional complexity)


	private static string GetNetCoreVersion()
	{
		// for .NET 5+ we can use Environment.Version
		if (Environment.Version.Major >= 5)
		{
			const string dotNet = ".NET ";
			var index = RuntimeInformation.FrameworkDescription.IndexOf(dotNet, StringComparison.OrdinalIgnoreCase);
			if (index >= 0)
			{
				return RuntimeInformation.FrameworkDescription.Substring(dotNet.Length);
			}
		}

		// next, try using file version info
		var systemPrivateCoreLib = FileVersionInfo.GetVersionInfo(typeof(object).Assembly.Location);
		if (TryGetVersionFromProductInfo(systemPrivateCoreLib.ProductVersion, systemPrivateCoreLib.ProductName, out var runtimeVersion))
		{
			return runtimeVersion;
		}

		var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;
		if (TryGetVersionFromAssemblyPath(assembly, out runtimeVersion))
		{
			return runtimeVersion;
		}

		//At this point, we can't identify whether this is a prerelease, but a version is better than nothing!

		var frameworkName = Assembly.GetEntryAssembly()?.GetCustomAttribute<TargetFrameworkAttribute>()?.FrameworkName;
		if (TryGetVersionFromFrameworkName(frameworkName, out runtimeVersion))
		{
			return runtimeVersion;
		}

		if (IsRunningInContainer)
		{
			var dotNetVersion = Environment.GetEnvironmentVariable("DOTNET_VERSION");
			var aspNetCoreVersion = Environment.GetEnvironmentVariable("ASPNETCORE_VERSION");

			return dotNetVersion ?? aspNetCoreVersion;
		}

		return null;
	}