Facebook C# SDK 错误 'Facebook.WebExceptionWrapper' 类型的异常

Question

我正在尝试使用此代码在我的 Facebook 页面上 post，但我收到 exception facebook.webexeptionwrapper 和详细消息 The underlying connection was closed: An unexpected error occurred when sending.

这是我的代码：

 public ActionResult Send(FormModel model)
        {
            const string accesstoken = "myaccesstoken";

            dynamic messagePost = new ExpandoObject();
            messagePost.access_token = accesstoken;
            messagePost.picture = "https://miro.medium.com/max/1200/1*mk1-6aYaf_Bes1E3Imhc0A.jpeg";
            messagePost.link = "[SOME_LINK]";
            messagePost.name = model.titre;
            messagePost.caption = "user" + " this post was created by my website"; 
            
            messagePost.description = model.description;

            FacebookClient app = new FacebookClient(accesstoken);
          
                var result = app.Post("/" + model.pageId + "/feed", messagePost);
          
            return new EmptyResult();
        }

Answer 1

我通过将这行代码添加到我的 golabal.asax.cs

来解决

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 |SecurityProtocolType.Tls11 | SecurityProtocolType.Tls | (SecurityProtocolType)3072;