Reimplement OAuth2 library - Step 1

Src/GoogleApis.Authentication.OAuth2/OAuth2Authenticator.cs

Index: Src/GoogleApis.Authentication.OAuth2/OAuth2Authenticator.cs
===================================================================
--- a/Src/GoogleApis.Authentication.OAuth2/OAuth2Authenticator.cs
 b/Src/GoogleApis.Authentication.OAuth2/OAuth2Authenticator.cs
@@ -17,6 17,7 @@
 using System;
 using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
 using DotNetOpenAuth.OAuth2;
@@ -34,9 35,7 @@
 private readonly TClient tokenProvider;
 private bool noCaching;
- /// <summary>
- /// Creates a new OAuth2 authenticator.
- /// </summary>
 /// <summary>Creates a new OAuth2 authenticator.</summary>
 /// <param name="tokenProvider">The client which is used for requesting access and refresh tokens.</param>
 /// <param name="authProvider">The method which provides the initial authorization for the provider.</param>
 public OAuth2Authenticator(TClient tokenProvider,
@@ -49,9 48,7 @@
 this.authProvider = authProvider;
 }
- /// <summary>
- /// The current state of this authenticator
- /// </summary>
 /// <summary>The current state of this authenticator.</summary>
 public IAuthorizationState State { get; private set; }
 /// <summary>
@@ -125,11 122,16 @@
 }
 /// <summary>
- /// Override handle response to refresh the token when Unauthorized status code is received.
 /// Overrides handle response to refresh the token when Unauthorized status code is received.
 /// </summary>
- public bool HandleResponse(HandleUnsuccessfulResponseArgs args)
 public Task<bool> HandleResponseAsync(HandleUnsuccessfulResponseArgs args)
 {
- return args.Response.StatusCode == HttpStatusCode.Unauthorized && tokenProvider.RefreshToken(State, null);
 var result = args.Response.StatusCode == HttpStatusCode.Unauthorized &&
 tokenProvider.RefreshToken(State, null);
 TaskCompletionSource<bool> tcs = new TaskCompletionSource<bool>();
 tcs.SetResult(result);
 return tcs.Task;
 }
 }
 }