适用于Linux / Unix的替代HttpClientHandler

Question

I am looking for a portable drop in replacement for Mono HttpClient stack. The portable Mono version [part of the regular Mono stack] has bugs. I have been trying to fix one specific bug affecting our project. Due to highly asynchronous nature of the library necessary for async operations, lack of documentation and comments in the Mono code, it is taking a long time. I see that Microsoft does not bother implementing Http stack in C#, instead using reliable libraries - WinHttp and libcurl. Unfortunately, porting libcurl to Mono is also a job. Legally, HttpClient allows replacing a handler, creating an alternative stack. There is a CFNetwork handler for iOS and ModernHttpClient for iOS/Android and other platforms. Yet, ModernHttpClient does not work, for me, as a drop-in replacement either. Any suggestions? My code as below:

class Program
{
    static void Main(string[] args)
    {
        var threadCancelationToken = new CancellationTokenSource();
        var sl = new StatusLoop();
        sl.HttpClientTimeout = int.Parse(args[0]);
        sl.StatusFreq = int.Parse(args[1]);

       Task.Run(async () => await sl.RunStatusLoop(threadCancelationToken.Token), threadCancelationToken.Token);
       Console.ReadKey();
    }
}

public class StatusLoop
{
    public int HttpClientTimeout;
    public int StatusFreq;

    public async Task RunStatusLoop(CancellationToken cancellationToken)
    {
//       var handler = new HttpClientHandler
         var handler = new NativeMessageHandler
         {
            Credentials = new NetworkCredential("username", "password"),
            PreAuthenticate = true,
            UseProxy = false
         };

//       var httpClient = new HttpClient(new NativeMessageHandler())
         var httpClient = new HttpClient(handler)
         {
             Timeout = TimeSpan.FromSeconds(this.HttpClientTimeout)
         };

         httpClient.DefaultRequestHeaders.Add("Connection", "Keep-Alive");
         httpClient.DefaultRequestHeaders.ExpectContinue = false;

         ServicePointManager.ServerCertificateValidationCallback +=
    (sender, certificate, chain, sslPolicyErrors) => true;

        while (true)
        {
            try
            {
                var httpResponse = await httpClient.GetAsync("https://192.168.1.22/api/v1/system/status/", cancellationToken);
                if (httpResponse.IsSuccessStatusCode)
                    Console.Write(".");
            }
            catch (Exception ex)
            {
                Console.WriteLine ("HttpClientGetStatus - exception\n\r" + ex.ToString());
            }

            Thread.Sleep(this.StatusFreq * 1000);
        }
    }
}

If you have used an alternative HttpClientHandler on Linux/Mac, please share your experience.

Thank you

Answer 1

有来源，一个在这里 ，但我不知道是否NuGet包包含此Unix程序代码还