SimpleHttp.cs

// See https://aka.ms/new-console-template for more information
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;



var builder = Host.CreateApplicationBuilder(args);

builder.Services.AddSingleton<Service>();
builder.Services.AddHttpClient(Service.HttpClientKey)
    .ConfigureHttpClient((sp, c) =>
    {
        var configuration = sp.GetRequiredService<IConfiguration>();
        c.BaseAddress = new Uri(configuration.GetValue<string>("ServiceAddress"));
    });



Console.ReadLine();


class Service(IHttpClientFactory httpClientFactory)
{
    public const string HttpClientKey = "Service";

    public async Task<string> GetData(CancellationToken ct = default)
    {
        using var client = httpClientFactory.CreateClient(HttpClientKey);
        return await client.GetStringAsync("trololo", ct);
    }
}