Set Authorization/Content-Type headers when call HTTPClient.PostAsync

Question

Where can I set headers to REST service call when using simple HTTPClient?

I do :

HttpClient client = new HttpClient();
var values = new Dictionary&         


        

Answer 1

The other answers do not work if you are using an HttpClientFactory, and here's some reasons why you should. With an HttpClientFactory the HttpMessages are reused from a pool, so setting default headers should be reserved for headers that will be used in every request.

If you just want to add a content-type header you can use the alternate PostAsJsonAsync or PostAsXmlAsync.

var response = await _httpClient.PostAsJsonAsync("account/update", model);

Unfortunately I don't have a better solution for adding authorization headers than this.

_httpClient.DefaultRequestHeaders.Add(HttpRequestHeader.Authorization.ToString(), $"Bearer {bearer}");