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POGoogle+ API: How can I use RefreshTokens to avoid requesting access every time my app launches?
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  1. POGoogle+ API: How can I use RefreshTokens to avoid requesting access every time my app launches?
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    copied!<p>I'm trying to use the Google+ API to access info for the authenticated user. I've copied some code from one of the samples, which works fine (below), however I'm having trouble making it work in a way I can reuse the token across app-launches.</p> <p>I tried capturing the "RefreshToken" property and using <code>provider.RefreshToken()</code> (amongst other things) and always get a <code>400 Bad Request</code> response.</p> <p>Does anyone know how to make this work, or know where I can find some samples? The <a href="http://code.google.com/p/google-api-dotnet-client/wiki/APIs#Google+_API">Google Code site</a> doesn't seem to cover this :-(</p> <pre><code>class Program { private const string Scope = "https://www.googleapis.com/auth/plus.me"; static void Main(string[] args) { var provider = new NativeApplicationClient(GoogleAuthenticationServer.Description); provider.ClientIdentifier = "BLAH"; provider.ClientSecret = "BLAH"; var auth = new OAuth2Authenticator&lt;NativeApplicationClient&gt;(provider, GetAuthentication); var plus = new PlusService(auth); plus.Key = "BLAH"; var me = plus.People.Get("me").Fetch(); Console.WriteLine(me.DisplayName); } private static IAuthorizationState GetAuthentication(NativeApplicationClient arg) { // Get the auth URL: IAuthorizationState state = new AuthorizationState(new[] { Scope }); state.Callback = new Uri(NativeApplicationClient.OutOfBandCallbackUrl); Uri authUri = arg.RequestUserAuthorization(state); // Request authorization from the user (by opening a browser window): Process.Start(authUri.ToString()); Console.Write(" Authorization Code: "); string authCode = Console.ReadLine(); Console.WriteLine(); // Retrieve the access token by using the authorization code: return arg.ProcessUserAuthorization(authCode, state); } } </code></pre>
 

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