Asp.net Web Api 2 - how to get access_token from C# code

Question

I am preparing a C# Api for my website. When I call the following code to login and get the access token, response.IsSuccessStatusCode is ok (200), but I could not find any access_token from the response. I assume the access token comes through response body, but could not find a proper function to get the response body.

var token = new Dictionary<string, string> { {"grant_type", "password"}, {"username", "[email protected]"}, {"password", "OOKKUUc564$"},}; var tknModel = new FormUrlEncodedContent(token); var resp = await client.PostAsync("http://parkatstreet.com/Token", tknModel); if (response.IsSuccessStatusCode) { string responseStream = response.Headers.ToString(); }

The response I am getting is:

{StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: System.Net.Http.StreamContent, Headers: { Pragma: no-cache
X-SourceFiles: =?UTF-8?B?QzpcRGV2ZWxvcG1lbnRcUGF5cm9sbEFwaVxEYml0UGF5cm9sbEFwaVxEYml0UGF5cm9sbEFwaVxUb2tlbg==?= Cache-Control: no-cache Date: Thu, 24 Sep 2015 05:19:10 GMT
Set-Cookie: .AspNet.Cookies=lgQKnoQzwpUbpE9PpVm9L71rlBEBwG_oA4VT89oowNoynkdpHRfGj6Lt92XJ5N1Pnmfv_FUQ07EVuLOLpjiuLtnoqOE2SqAFvXr7tMQmoXlU-pvf8KwkTx6Fl_TyC-VrCPOoOcxEAolBcN3oHXHYcjYPaqmZpQA-mQqcjwxIumXd6eVEHfEZtRj3EiVLS0schzD9TG8IcPq3JkzEQpqu_srEBKbJQ8zIJX6TCfkFK3cvGGJ-6cbV8lIJcPke8ahnc_icDkPKnlfzZZEEZEzeamYX3u1g1R50bj-y01T0JXQLyqGK-EpzjiLwqeO5yv1-yJ_1GQrqv46lomu51WTY_oMIXvGTNEU8wurJtN2XdpBLKg1X79VQxqunniKpYGtYN1wq-sl-RPiFLz9Cnh21yD1ogSNJoWEutyOP3lpCvZp50cAktDqB-swG92_a8f6OPzFHSG0yUq01Ro1YFJNBljP5eWT8r9wGqP1ZlDHLAmQ; path=/; HttpOnly Server: Microsoft-IIS/10.0 X-Powered-By: ASP.NET Content-Length: 688 Content-Type: application/json; charset=UTF-8
Expires: -1 }}

And the response I expect is:

{ "access_token": "4b-KAhg7QNMyHNVXFBUFBq5NJvlw7_JmaXZl1SDLIi6sMl5kTh8EfnvNTNa5iUwQuiNSk2Il6nUxheAJ64rroYYF-woWcQ9l8J8g56IuCApUNJWzD31eyJrOBI2yzZcTFY8X0GqpidYhZNvTHsn4PNwOZAHAebBK64yMstb9-66kdgp-vSgvCvH1tA45drlWVuNsjmsX6EHg5WlDFJsPhnDL7Lz4sSYxtFF8ipZvAEoxJ-dGsQHRsIAygY934nrLdYP7saDCAAqlzvUoWspYIO2B9kyyzoYREjb3Y9ik8MEmuGZgk-hzAWkTRMh51tUn0wknMPVsDve_OYdX9qZlMoxDEXJjGhPmxMKd_o2AdGkPU31OTW6Y3JkQZVdTTHqUuCWMTWctkImvIpSRlpwfc71qRltbp1wy7SjHQdpeYC8ZBcjO-B6NImkxjM_yb2BVKM8TrXeqdYrRcKBer6RjpgMCwlha9oH8_yyFNqbw-U1YcrKLvIfJPqjJ45K37bkn", "token_type": "bearer", "expires_in": 1209599, "userName": "[email protected]", ".issued": "Thu, 24 Sep 2015 04:45:59 GMT", ".expires": "Thu, 08 Oct 2015 04:45:59 GMT" }

yes. Both are my code. Also please note that I get the correct response when I call from javascript as shown below. var login = function () { var url = "/Token"; var data = $("#userData").serialize(); data = data + "&grant_type=password"; $.post(url, data) .success(saveAccessToken) .always(showResponse); return false; }; — OrionSoftTechnologiesSydney
– OrionSoftTechnologiesSydney, Commented Sep 24, 2015 at 5:51
In that case,make sure you're setting the access_token in response header. — Amit Kumar Ghosh
– Amit Kumar Ghosh, Commented Sep 24, 2015 at 5:53
Token is a part of OWIN middle-ware, so could not keep any break point there — OrionSoftTechnologiesSydney
– OrionSoftTechnologiesSydney, Commented Sep 24, 2015 at 5:56
Can you show your api from where you are returning access_token? — Priyank Sheth
– Priyank Sheth, Commented Sep 24, 2015 at 8:55

BNK · Accepted Answer · 2015-09-24 09:26:15Z

You can create a new Console Application and use the following code:

namespace APIClientConsole { class Program { static void Main(string[] args) { RunAsync().Wait(); } static async Task RunAsync() { using (var client = new HttpClient()) { // TODO - Send HTTP requests client.BaseAddress = new Uri("http://localhost:24780/"); client.DefaultRequestHeaders.Accept.Clear(); client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); // HTTP POST var body = new List<KeyValuePair<string, string>> { new KeyValuePair<string, string>("grant_type", "password"), new KeyValuePair<string, string>("username", "bnk"), new KeyValuePair<string, string>("password", "bnk123") }; var content = new FormUrlEncodedContent(body); HttpResponseMessage response = await client.PostAsync("token", content); if (response.IsSuccessStatusCode) { string responseStream = await response.Content.ReadAsStringAsync(); Console.WriteLine(responseStream); Console.ReadLine(); } } } } }

You can read more at the following link

Calling a Web API From a .NET Client in ASP.NET Web API 2 (C#)

Thomas Meyer · Accepted Answer · 2015-09-24 07:34:01Z

In your comment you use javascript to access to response content (or body as you call it)

$.post(url, data).success(saveAccessToken).always(showResponse);

In C# you access can get the content with

string responseStream = await response.Content.ReadAsStringAsync();

If you have Microsoft.AspNet.WebApi.Client referenced you can parse the content with

ResponseType result = await response.Content.ReadAsAsync<ResponseType>();

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