YouTube API。上传前验证刷新令牌

Question

我正在使用以下代码获取授权并上传到 YouTube：

我已经从 google 请求了我的令牌，并且用户已经登录并且我已经取回了我的授权令牌。

我已使用以下方法将此交换为刷新和访问令牌：

 using (WebClient client = new WebClient())
            {

                byte[] response =
                    client.UploadValues("https://accounts.google.com/o/oauth2/token", new NameValueCollection()
                        {
                            {"code", Session["authCode"].ToString()},
                            {"redirect_uri", "http://YouTubeTest.org/testpage.aspx"},
                            {
                                "client_id", clientID
                            },
                            {"client_secret", secret},
                            {"grant_type", "authorization_code"}
                        });


                string result =Encoding.UTF8.GetString(response);
                XElement node = XElement.Parse(JsonConvert.DeserializeXNode(result, "Root").ToString());
                Session["refreshtoken"] = node.Element("refresh_token").Value;
            }

然后存储这些详细信息。

当用户点击上传视频时，我初始化 youtube 服务如下：

 ClientSecrets secrets = new ClientSecrets()
            {
                ClientId = CLIENT_ID,
                ClientSecret = CLIENT_SECRET
            };

            var token = new TokenResponse { RefreshToken = REFRESH_TOKEN };

            var credentials = new UserCredential(new GoogleAuthorizationCodeFlow(
                new GoogleAuthorizationCodeFlow.Initializer
                {
                    ClientSecrets = secrets
                }),
                "user",
                token);

            var service = new YouTubeService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credentials,
                ApplicationName = "TestProject"
            });

此时我想知道我发送过来的刷新令牌是否有效，但似乎没有任何方法可以告诉。

我似乎知道的唯一方法是当我实际尝试通过执行以下操作上传视频时：

public String UploadVideo(Stream stream, String title, String desc, String[] tags, String categoryId, Boolean isPublic)
        {
            var video = new Video();
            video.Snippet = new VideoSnippet();
            video.Snippet.Title = title;
            video.Snippet.Description = desc;
            video.Snippet.Tags = tags;
            video.Snippet.CategoryId = categoryId; // See https://developers.google.com/youtube/v3/docs/videoCategories/list
            video.Status = new VideoStatus();
            video.Status.PrivacyStatus = isPublic ? "public" : "private";


            var videosInsertRequest = youtube.Videos.Insert(video, "snippet,status", stream, "video/*");
            videosInsertRequest.ProgressChanged += insertRequest_ProgressChanged;
            videosInsertRequest.ResponseReceived += insertRequest_ResponseReceived;
            videosInsertRequest.Upload();

            return UploadedVideoId;
        }

  void insertRequest_ResponseReceived(Video video)
        {
            UploadedVideoId = video.Id;
      }

        void insertRequest_ProgressChanged(Google.Apis.Upload.IUploadProgress progress)
        {
            // You can handle several status messages here.
            switch (progress.Status)
            {
                case UploadStatus.Failed:
                    UploadedVideoId = "FAILED";

^^ 如果此时令牌无效，则进度异常 "Invalid_grant"

                    break;
                case UploadStatus.Completed:
                    break;
                default:
                    break;
            }
        }

我如何在尝试上传之前确定我拥有的刷新令牌是否有效？

此时很难从中很好地恢复，所以理想情况下，我希望能够在初始化 youtube 服务时或之后检查它。

Answer 1

验证令牌是 Google Identity 文档的一部分。它建议您可以通过在 Web 服务端点中请求来验证令牌。

您可以调用 https://www.googleapis.com/oauth2/v3/tokeninfo 并将您的 access_token 作为参数

https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=1/fFBGRNJru1FQd44AzqT3Zg

响应将有一个描述令牌或错误的 JSON 对象。有关此内容的更多详细信息，请参阅上述文档中的参考页面。

YouTube API。上传前验证刷新令牌

YouTube API. Validate Refresh Token before Upload

c#

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google-oauth