.NET Core Web Application - Startup.cs for registering typed client for making HTTP requests.

Startup.cs

// Startup.cs
public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        // Use GitHubApiConsumer as key to the configurations
        services.AddHttpClient<GitHubApionsumer>(c =>
        {
            c.BaseAddress = new Uri("https://api.github.com/");
            // Github API versioning
            c.DefaultRequestHeaders.Add("Accept", "application/vnd.github.v3+json");
            // Github requires a user-agent
            c.DefaultRequestHeaders.Add("User-Agent", "theCodeBlogger.com Demo");
        });

        services.AddControllersWithViews();
    }
    
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        // Request Pipeline...
    }
}

// HomeController.cs
public class HomeController : Controller
{
    private readonly ILogger<HomeController> _logger;
    private readonly GitHubApionsumer _gitHubApionsumer;

    // Notice that GitHubApiConsumer is directly injected - IHttpClientFactory is not injected.
    public HomeController(ILogger<HomeController> logger, GitHubApionsumer gitHubApionsumer)
    {
        _logger = logger;
        _gitHubApionsumer = gitHubApionsumer;
    }

    public async Task<IActionResult> Index()
    {
        List<GitHubRepo> repoCollection = await _gitHubApionsumer.GetRepos();
        ViewBag.repoCollection = repoCollection;
        return View();
    }
}