Why I got 401 occasionally?

Question

Hi All,

I'm calling HTTPClient with dynamic token in a loop, but occasionally it thrown me 401 (Unauthorized).

• What did I do wrong in my test codes below?
• Is it correct to put the Authorization in there?, it looks like in some time it doesn't reset the token.

I need advice.

thank you so much in advance.

Win

Testingonly.cs
==============
List<Task> tasks = new List<Task>();

for (int i =0; i<100; i++)
{
   string token = getToken(i);
   tasks.Add(Models.Test.CheckHTTP(token));
}

await Task.WhenAll(tasks);

Test.cs
=======
public static async Task<bool> CheckHTTP(string token)
{
   string baseAddress = _httpClient.BaseAddress.ToString();
   

   List<Task> tasks = new List<Task>();
   bool _ok = true;
   do
   {
      await _httpClient.GetAsync(url).ContinueWith(async (c) =>
      {
            var response = await c;

            if (response.IsSuccessStatusCode)
            {
                // do some process
                tasks.Add(Do_SomeProcessAsync(response.Content.ReadAsStringAsync()));
            }
            else
            {
                SaveToFails(url, (int)response.StatusCode); // save the fails to a table
               _ok = false;
            }
       });
   }
   while(_ok);
 
   await Task.WhenAll(tasks);
}

Answer 1

@Reza Aghaei

thank you, I have created another question that related to this