Setting Authorization Header of HttpClient

Question

I have an HttpClient that I am using for a REST API. However I am having trouble setting up the Authorization header. I need to set the header to the token I received from d

Answer 1

As it is a good practice to reuse the HttpClient instance, for performance and port exhaustion problems, and because none of the answers give this solution (and even leading you toward bad practices :( ), I put here a link towards the answer I made on a similar question :

https://stackoverflow.com/a/40707446/717372

Some sources on how to use HttpClient the right way:

• https://aspnetmonsters.com/2016/08/2016-08-27-httpclientwrong/
• https://blogs.msdn.microsoft.com/alazarev/2017/12/29/disposable-finalizers-and-httpclient/

Answer 2

To set basic authentication with C# HttpClient. The following code is working for me.

   using (var client = new HttpClient())
        {
            var webUrl ="http://localhost/saleapi/api/";
            var uri = "api/sales";
            client.BaseAddress = new Uri(webUrl);
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            client.DefaultRequestHeaders.ConnectionClose = true;

            //Set Basic Auth
            var user = "username";
            var password = "password";
            var base64String =Convert.ToBase64String( Encoding.ASCII.GetBytes($"{user}:{password}"));
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",base64String);

            var result = await client.PostAsJsonAsync(uri, model);
            return result;
        }

Answer 3

Oauth Process flow is complex and there is always a room for one error or another. My suggestion will be to always use the boilerplate code and a set of libraries for OAuth authentication flow.It will make your life easier.

Here is the link for the set of libraries.OAuth Libraries for .Net