question

dat-le5843 avatar image
dat-le5843 asked Tyler Liu commented

Using RingCentral in web api

Hello,


I am using the https://github.com/ringcentral/ringcentral-csharp-client c# SDK.


When I run the code to send a fax through a unit test that is in the same Visual Studio solution as the api call, it works.


var restClient = new RestClient(_appKey, _appSecret, _appUrl);

var token = await rc.Authorize(_appUserName, null, _appPassword).Result;


However, when I wrap this functionality within an C# ApiController, it hangs at this point and I can't get the result.


Is there something special I need to do here? My RingCentral app is set for Server-only (No UI) as I would only access the RingCentral API through a in-house built Web Api server.


Thanks


sdk
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dat-le5843 avatar image
dat-le5843 answered
I did find a work-around. I had to bypass the SDK and call API directly to get the TokenInfo
           
using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri(ConfigurationManager.AppSettings["RingCentralApiUrl"] + "/");
                var credentials = Encoding.ASCII.GetBytes(String.Format("{0}:{1}", _appKey, _appSecret));
                client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(credentials));

                var formContent = new FormUrlEncodedContent(new[]
                {
                    new KeyValuePair<string, string>("username", _appUserName), 
                    new KeyValuePair<string, string>("grant_type", "password"), 
                    new KeyValuePair<string, string>("access_token_ttl", "3600"),
                    new KeyValuePair<string, string>("refresh_token_ttl", "604800"), 
                    new KeyValuePair<string, string>("password", _appPassword) 
                });

                var response =
                    client.PostAsync("restapi/oauth/token", formContent).Result;
                if (response.IsSuccessStatusCode)
                {
                    var result = response.Content.ReadAsStringAsync().Result;
                    var token = JsonConvert.DeserializeObject<TokenInfo>(result);
                    rc.token = token;
                    return token;
                }
            }

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Tyler Liu avatar image
Tyler Liu answered
C# async is tricky, if you don't do it properly your app will hang.

I will recommend never using ".Result", just stick to "await".

So "var token = await rc.Authorize(_appUserName, null, _appPassword).Result;"

should be "var token = await rc.Authorize(_appUserName, null, _appPassword);"

You are not alone:  https://www.google.com.hk/search?q=C%23+async+hang&oq=C%23+async+hang&aqs=chrome..69i57j69i5...

And this is a C# programming issue instead of a SDK issue.
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danilo-meireles6216 avatar image
danilo-meireles6216 answered Tyler Liu commented
Hello!
I've tried different ways to call api from C# but I get (400)BAD REQUEST. 
What am I doing wrong here? 
Thank you very much!

var appKey = "myAppKey";
var appSecret = "myAppSecret";
var appUrl = " https://platform.devtest.ringcentral.com"
var userName = "+19167582841";
var password = "myPassword";
var restClient = new RestClient(appKey, appSecret, appUrl);
var token = await restClient.Authorize(userName, null, password);



=======================================

I already tried this as well and get bad request:

var appKey = "myAppKey";
            var appSecret = "myAppSecret";
            var userName = "+19167582841";            
            var password = "myAppPassword";
            var uri = " https://platform.devtest.ringcentral.com/restapi/oauth/token";

            using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri(uri + "/");
                var credentials = Encoding.ASCII.GetBytes(String.Format("{0}:{1}", appKey, appSecret));
                client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(credentials));

                var formContent = new FormUrlEncodedContent(new[]
                {
                    new KeyValuePair<string, string>("username", userName),
                    new KeyValuePair<string, string>("grant_type", "password"),
                    new KeyValuePair<string, string>("access_token_ttl", "3600"),
                    new KeyValuePair<string, string>("refresh_token_ttl", "604800"),
                    new KeyValuePair<string, string>("password", password)
                });

                var response =
                    client.PostAsync("restapi/oauth/token", formContent).Result;
                if (response.IsSuccessStatusCode)
                {
                    var result = response.Content.ReadAsStringAsync().Result;
                    var token = JsonConvert.DeserializeObject<TokenInfo>(result);
                    //rc.token = token;
                    //return token;
                }
            }


Thank you very much!!






1 comment
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Could you please create a new ticket instead since this one is old and irrelevant to your question? 

And please post the FULL error message, otherwise we don't know what happened.
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Developer sandbox tools

Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.

Download RingCentral Phone for Desktop:

Tip: switch to the "sandbox mode" before logging in the app:

  • On MacOS: press "fn + command + f2" keys
  • On Windows: press "Ctrl + F2" keys