在 Visual Studio 中调试 SharePoint API 时“无法建立 SSL 连接”

Question

我一直在沙箱 SharePoint 网站中工作，并使用 PnP.Framework 和 Microsoft.SharePointOnline.CSOM 构建我的公司可用于以编程方式管理文件的内容。

下面的代码实际上在前 10 分钟左右的调试中有效，然后开始给我一个 SSL 错误。作为参考，这只是我用来了解 API 的一个控制台应用程序。

代码：

        string clientId = "*********";
        string redirectUrl = "http://localhost";
        string tenantId = "************";
        string siteUrl = "https://5klmt2.sharepoint.com/sites/TestTeam";

        var authMan = PnP.Framework.AuthenticationManager.CreateWithInteractiveLogin(clientId, redirectUrl, tenantId);

        using (ClientContext context = authMan.GetContext(siteUrl))
        {
            var web = context.Web;
            context.Load(web, w => w.Id, w => w.Title);
            context.ExecuteQuery();

            Console.WriteLine($"{web.Id} - {web.Title}");

            var documents = web.GetListByTitle("Documents", l => l.Id, l => l.Title);

            Console.WriteLine($"{documents.Id} - {documents.Title}");
        }

当它尝试 ExecuteQuery 时它会中断，给我以下错误：

System.Net.WebException
  HResult=0x80131620
  Message=The SSL connection could not be established, see inner exception.
  Source=System.Net.Requests
  StackTrace:
   at System.Net.HttpWebRequest.GetResponse()
   at Microsoft.SharePoint.Client.SPWebRequestExecutor.Execute()
   at Microsoft.SharePoint.Client.ClientRequest.ExecuteQueryToServer(ChunkStringBuilder sb)
   at Microsoft.SharePoint.Client.ClientRequest.ExecuteQuery()
   at Microsoft.SharePoint.Client.ClientRuntimeContext.ExecuteQuery()
   at Microsoft.SharePoint.Client.ClientContext.ExecuteQuery()
   at Program.<TestStuff>d__1.MoveNext() in C:\Club Benchmarking\GitHub\SharePointCSOM\SharePointCSOM\Program.cs:line 29
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()

Inner Exception 1:
HttpRequestException: The SSL connection could not be established, see inner exception.

Inner Exception 2:
IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host..

Inner Exception 3:
SocketException: An existing connection was forcibly closed by the remote host.

非常感谢任何帮助:)

Answer 1

尝试使用以下代码绕过证书

HttpClientHandler clientHandler = new HttpClientHandler();
clientHandler.ServerCertificateCustomValidationCallback = (sender, cert, chain, sslPolicyErrors) => { return true; };

// Pass the handler to httpclient(from you are calling api)
HttpClient client = new HttpClient(clientHandler);