Twitter API over .NET Standard

OAuthStandard.cs

// Twitter API over .NET Standard
//
// using OAuthStandard https://github.com/cjhoward92/OAuthStandard
// using HttpClient https://docs.microsoft.com/ja-jp/dotnet/api/system.net.http.httpclient?view=netstandard-2.0
// using .NET Core 3.0
// using C# 8.0
//
// NuGet
// PM> Install-Package OAuthStandard -Version 1.0.0

using OAuth;
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        private static readonly HttpClient httpClient = new HttpClient();
        
        static async Task Main(string[] args)
        {
            var consumerKey = "";
            var consumerSecret = "";
            var accessToken = "";
            var accessTokenSecret = "";
            var url = "https://api.twitter.com/1.1/statuses/home_timeline.json";

            var client = OAuthRequest.ForProtectedResource(HttpMethod.Get.ToString(), consumerKey, consumerSecret, accessToken, accessTokenSecret);
            client.RequestUrl = url;
            var auth = client.GetAuthorizationHeader();
            using var request = new HttpRequestMessage(HttpMethod.Get, client.RequestUrl);
            using var content = new StringContent("", Encoding.UTF8, "application/json");
            request.Headers.Authorization = new AuthenticationHeaderValue("OAuth", auth.Substring("OAuth ".Length));
            request.Content = content;
            using var response = await httpClient.SendAsync(request).ConfigureAwait(false);
            var json = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
            Console.WriteLine(json);
        }
    }
}