How to reuse Auth Tokens for Social Api's on app restart

Question

In using some of the twitter apps such as Tweetings Janetter etc. You authenticate once and enter your auth pincode and since then i haven't had to authenticate again for atleast 3+ weeks

In using the .net api's such as Spring.Net Social Twitter example ConsoleQuickStart, skipping the line

       Process.Start(authenticateUrl);

and entering the code from previous app runtime does not work and throws and exception

whereas shutting down other twitter apps such as tweetings does not require re-authentication !!

Any help on how to reuse tokens and general rules on good behavior for such reuse ?

thanks

The example is at https://github.com/SpringSource/spring-net-social-twitter/blob/master/examples/Spring.ConsoleQuickStart/src/Spring.ConsoleQuickStart/Program.cs

UPDATE -

Now getting a HTTP 401 Unauthorized after changing the code to this -

if ( ! haveOAuthAndPin )
{
                    var oauthToken = twitterServiceProvider.OAuthOperations.FetchRequestTokenAsync("oob", null).Result;



                    string authenticateUrl = twitterServiceProvider.OAuthOperations.BuildAuthorizeUrl(oauthToken.Value, null);
                    Console.WriteLine("Redirect user for authentication: " + authenticateUrl);
                    Process.Start(authenticateUrl);
                    Console.WriteLine("Enter PIN Code from Twitter authorization page:");
                    pinCode = Console.ReadLine();

                    StoreAuthTokenAndPin(oAuthToken, pinCode);
}
else
{
      var oAuthToken = new oAuthToken(storedValue, storedSecret)
      pinCode = storedPinCode ;
}

the complete error stack is -

System.AggregateException was unhandled
  HResult=-2146233088
  Message=One or more errors occurred.
  Source=mscorlib
  StackTrace:
       at System.AggregateException.Handle(Func`2 predicate)
       at Spring.ConsoleQuickStart.Program.Main(String[] args) in C:\downloads\_source-code\Spring.net\Spring.Social.Twitter-2.0.0-M1\examples\Spring.ConsoleQuickStart\src\Spring.ConsoleQuickStart\Program.cs:line 168
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: System.AggregateException
       HResult=-2146233088
       Message=One or more errors occurred.
       Source=mscorlib
       StackTrace:
            at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
            at Spring.Social.OAuth1.OAuth1Template.<ExchangeForAccessTokenAsync>b__1(Task`1 task) in f:\bamboo-home\xml-data\build-dir\SPRNETSOCIAL-RELEASE-JOB1\src\Spring.Social.Core\Social\OAuth1\OAuth1Template.cs:line 233
            at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
            at System.Threading.Tasks.Task.Execute()
       InnerException: Spring.Rest.Client.HttpClientErrorException
            HResult=-2146233088
            Message=POST request for 'https://api.twitter.com/oauth/access_token' resulted in 401 - Unauthorized (Unauthorized).
            Source=Spring.Rest
            StackTrace:
                 at Spring.Rest.Client.Support.DefaultResponseErrorHandler.HandleError(Uri requestUri, HttpMethod requestMethod, HttpResponseMessage`1 response) in f:\bamboo-home\xml-data\build-dir\SPRNETREST-RELEASE-JOB1\src\Spring.Rest\Rest\Client\Support\DefaultResponseErrorHandler.cs:line 121
                 at Spring.Rest.Client.Support.DefaultResponseErrorHandler.HandleError(Uri requestUri, HttpMethod requestMethod, IClientHttpResponse response) in f:\bamboo-home\xml-data\build-dir\SPRNETREST-RELEASE-JOB1\src\Spring.Rest\Rest\Client\Support\DefaultResponseErrorHandler.cs:line 86
                 at Spring.Rest.Client.RestTemplate.HandleResponseError(Uri uri, HttpMethod method, IClientHttpResponse response, IResponseErrorHandler errorHandler) in f:\bamboo-home\xml-data\build-dir\SPRNETREST-RELEASE-JOB1\src\Spring.Rest\Rest\Client\RestTemplate.cs:line 2959
                 at Spring.Rest.Client.RestTemplate.ResponseReceivedCallback[T](ClientHttpRequestCompletedEventArgs responseReceived) in f:\bamboo-home\xml-data\build-dir\SPRNETREST-RELEASE-JOB1\src\Spring.Rest\Rest\Client\RestTemplate.cs:line 2777
            InnerException: 

Answer 1

Twitter doesn't expire ACCESS tokens: https://dev.twitter.com/docs/auth/oauth/faq

It is important to understand how OAuth works to make sure you aren't making a simple mistake. Your application uses it's application ID to request a "Request_Token" from twitter, which it then provides to the authentication page. The user then logs in to grant access to this application associated with the Request_Token, if the user logs in successfully your callback location will receive an OAuth_Access_Token and OAuth_Access_Token_Secret (and some other things).

Are you trying to re-use the OAuth_Access_Tokens and not just the Request_Token? Have you changed your application's ID? Did you keep both OAuth_Access_Tokens?

EDIT:

Just looked at the sample code.

AuthorizedRequestToken requestToken = new AuthorizedRequestToken(oauthToken, pinCode);

Your oauthToken will be incorrect if you skip the line you mentioned.

The oauthToken and the pinCode are related. Originally you're using one oauthToken to get a pinCode. When you get a new oauthToken from Twitter the second time around, it isn't related to your pinCode that you're trying to use.

Solution is to store the oauthToken too and re-use that with the pinCode the second time running the program.