Gabms Gabms - 3 months ago 7
C# Question

Managing returncode from Newtonsoft.Json when not authorized

We have using an implementation login on a JWT portal.
When I post a valid user/pass, we have a token ok. But whe I post a invalid user/pass, the response has this format:

{StatusCode: 401, ReasonPhrase: 'Unauthorized', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
Pragma: no-cache
Cache-Control: no-cache
Set-Cookie: dnn_IsMobile=False; path=/; HttpOnly
Set-Cookie: .ASPXANONYMOUS=YrYcKYrviiUjmN7dSAd2DYWBO5W_Nj2yS_79eZ473OtallQXmOoE_6u73yOGOgBn0im8tE_dcUrIR74EYy_l8HKId7AvyY2OszmP1JrCkR6dLslS0; expires=Fri, 18-Nov-2016 06:11:07 GMT; path=/; HttpOnly
Set-Cookie: dnn_IsMobile=False; path=/; HttpOnly
Set-Cookie: .ASPXANONYMOUS=YrYcKYrviiUjmN7dSAd2DYWBO5W_Nj2yS_79eZ473OtallQXmOoE_6u73yOGOgBn0im8tE_dcUrIR74EYy_l8HKId7AvyY2OszmP1JrCkR6dLslS0; expires=Fri, 18-Nov-2016 06:11:07 GMT; path=/; HttpOnly
Set-Cookie: language=es-CO; path=/; HttpOnly
Set-Cookie: ARRAffinity=03cc22ac05b5cc76e788b382c1c33cccde1e727973fdb84dce1c542f8f1d9b46;Path=/;Domain=plcolabv2-pre.azurewebsites.net
X-AspNet-Version: 4.0.30319
WWW-Authenticate: Bearer bad-credentials
Date: Fri, 09 Sep 2016 19:31:07 GMT
Content-Length: 0
Expires: -1
}}


Please, how can I get the results on first line, and store it on a variable? (
StatusCode: 401, ReasonPhrase: 'Unauthorized'
). When I post invalid user/pass, variable
response
have
null
value.

My code:
....

// Request body
byte[] byteData = Encoding.UTF8.GetBytes(jOneLogin);

using (var content = new ByteArrayContent(byteData))
{
content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
response = await client.PostAsync(uri, content);
}

var results = JsonConvert.DeserializeObject<dynamic>(response.Content.ReadAsStringAsync().Result);

var crAccessToken = results.accessToken;
....


Maybe, is a simple question, answered in the past, but I can't find a specific post for that.

Thanks in advance.

dbc dbc
Answer

As you are using HttpClient, you can just check HttpResponseMessage.IsSuccessStatusCode before calling JsonConvert.DeserializeObject(). See this answer for an example.