Getting OAU-213 Error When Using Newly Generated Token

Question

I'm having an issue where I authorize through the C# SDK, serialize that token to a database and then on subsequent calls, deseserialize it and try to use it and immediately get an OAU-213 Token Not Found Error. We want to forward phone calls on a dynamic basis so in the code below I instantiate a RestClient and then check to see if I have a token I can use, if I do, I then set it as the RestClient's token and make an API to forward the call. Whenever I use the token generated by calling rc.Authorize() my code works correctly, but if I store it to the database and then use the exact same token, I get the error down below. Any help would be appreciated.

Thanks!

public async Task<bool> ForwardPhoneCall(string userName, string firmId, string telephonySessionId, string partyId)

        {

            var phoneNumber = await _UserRepo.GetMainPhoneNumberFromUserName(userName, firmId);



            if (phoneNumber != null)

            {

                RingCentralCredentials creds = await GetRingCentralCredentials(firmId);



                ForwardTarget forwardTarget = new ForwardTarget() { phoneNumber = phoneNumber.FormatPhoneNoSpaces() };



                using (var rc = new RestClient(creds.clientID, creds.clientSecret, creds.serverURL))

                {

                    rc.token = await Authorize(creds, rc, firmId);

                    await rc.Restapi().Account().Telephony().Sessions(telephonySessionId).Parties(partyId).Forward().Post(forwardTarget);



                    return true;

                }

            }



            return false;

        }

 private async Task<RingCentral.TokenInfo> Authorize(RingCentralCredentials creds, RestClient rc, string firmId)

        {

            RingCentral.TokenInfo token;

            var currentTime = DateTimeOffset.Now.ToUnixTimeSeconds();



            if (creds?.tokenExpiration == null || string.IsNullOrEmpty(creds?.currentToken) || creds.tokenExpiration < currentTime)

            {

                token = await rc.Authorize(creds.username, creds.extension, creds.password);



                creds.currentToken = JsonConvert.SerializeObject(token);

                creds.tokenExpiration = DateTimeOffset.Now.ToUnixTimeSeconds() + token.expires_in - 300;



                await SaveRingCentralCredentials(firmId, creds);

            }

            else

            {

                token = JsonConvert.DeserializeObject<RingCentral.TokenInfo>(creds.currentToken);

            }



            return token;

        }

Here's the response:

RingCentral.RestException: Response:

StatusCode: 401, ReasonPhrase: 'Unauthorized', Version: 1.1, Content: System.Net.Http.HttpConnection+HttpConnectionResponseContent, Headers:

{

Server: nginx

Date: Fri, 13 Dec 2019 17:54:41 GMT

Connection: keep-alive

X-Rate-Limit-Group: light

X-Rate-Limit-Limit: 50

X-Rate-Limit-Remaining: 49

X-Rate-Limit-Window: 60

WWW-Authenticate: Bearer realm="RingCentral REST API", error="OAU-213", error_description="Token not found"

RoutingKey: SJC12P01

RCRequestId: a3749b4e-1dd1-11ea-8694-005056bbcdd9

Content-Type: application/json

Content-Length: 154

Content-Language: en

}

Content: {

"errorCode" : "TokenInvalid",

"message" : "Token not found",

"errors" : [ {

"errorCode" : "OAU-213",

"message" : "Token not found"

} ]

}

PhongVu · Accepted Answer

I think this is the root cause of your problem.

using (var rc = new RestClient(creds.clientID, creds.clientSecret, creds.serverURL))

{

  rc.token = await Authorize(creds, rc, firmId);

  await rc.Restapi().Account().Telephony().Sessions(telephonySessionId).Parties(partyId).Forward().Post(forwardTarget);

 

  return true;

}

You authorize your app inside the "using" brackets, and when your code exists, the object is disposed and the token will be revoked by the SDK

public async void Dispose()

        {

            await Revoke();

        }

Try avoid the "using" will solve the problem.

Jeff1972848020 · Answer

yes, I printed both tokens and they are exactly the same and I can make calls within seconds of each other and the second one that reads the token from the database always fails.

I do use this same app for notifications, i.e. the AccountTelephony and Extension Telephony webhooks, but dont make any calls to the OAuth endpoint except to forward the phone. I noticed in my analytics that I have a bunch of calls to the revoke endpoint but never call that myself.

Here's my endpoint for the AccountTelephony webhook

        [Route("ringCentral/{firmId}")]

        [HttpPost]

        public async Task<ActionResult> GetAccountTelephony(string firmId)

        {

            _Logger.LogInformation("Starting Account Telephony");



            HttpContext.Request.Headers.TryGetValue("Validation-Token", out StringValues validationToken);

            HttpContext.Response.Headers.Add("Validation-Token", validationToken);



            _Logger.LogInformation("Got Account Telephony Validation Token");



            using (StreamReader reader = new StreamReader(HttpContext.Request.Body, Encoding.UTF8))

            {

                var requestBody = await reader.ReadToEndAsync();

                .

                .

                .

                return Ok();

            }

        }

Endpoints called by this app in past 24 hours:

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