Question

大家好，我对此异常感到困惑，它正在停止我的服务。请帮助以下是完整的堆栈跟踪。

说明：由于未处理的异常，进程已终止。异常信息：System.Net.HttpWebRequest.GetResponse（）上的System.Net.WebException 在 Microsoft.Exchange.WebServices.Data.EwsHttpWebRequest.Microsoft.Exchange.WebServices.Data.IEwsHttpWebRequest.GetResponse（）在Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse（Microsoft.Exchange.WebServices.Data.IEwsHttpWebRequest）

异常信息：Microsoft.Exchange.WebServices.Data.ServiceRequestException 在Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse（Microsoft.Exchange.WebServices.Data.IEwsHttpWebRequest）在Microsoft.Exchange.WebServices.Data.ServiceRequestBase.ValidateAndEmitRequest（Microsoft.Exchange.WebServices.Data.IEwsHttpWebRequest ByRef）在Microsoft.Exchange.WebServices.Data.HangingServiceRequestBase.InternalExecute（）在Microsoft.Exchange.WebServices.Data.StreamingSubscriptionConnection.Open（）在ERSupportGetOutlookEmail.EmailExchange.OnDisconnect（System.Object，Microsoft.Exchange.WebServices.Data.SubscriptionErrorEventArgs）在Microsoft.Exchange.WebServices.Data.StreamingSubscriptionConnection.InternalOnDisconnect（System.Exception）在Microsoft.Exchange.WebServices.Data.StreamingSubscriptionConnection.OnRequestDisconnect（System.Object，Microsoft.Exchange.WebServices.Data.HangingRequestDisconnectEventArgs）在Microsoft.Exchange.WebServices.Data.HangingServiceRequestBase.InternalOnDisconnect（Microsoft.Exchange.WebServices.Data.HangingRequestDisconnectReason，System.Exception）在Microsoft.Exchange.WebServices.Data.GetStreamingEventsResponse.ReadElementsFromXml（Microsoft.Exchange.WebServices.Data.EwsServiceXmlReader）在Microsoft.Exchange.WebServices.Data.ServiceResponse.LoadFromXml（Microsoft.Exchange.WebServices.Data.EwsServiceXmlReader，System.String）在Microsoft.Exchange.WebServices.Data.GetStreamingEventsRequest.ParseResponse（Microsoft.Exchange.WebServices.Data.EwsServiceXmlReader）在Microsoft.Exchange.WebServices.Data.ServiceRequestBase.ReadResponse（Microsoft.Exchange.WebServices.Data.EwsServiceXmlReader）在Microsoft.Exchange.WebServices.Data.HangingServiceRequestBase.ParseResponses（System.Object）在System.Threading.QueueUserWorkItemCallback.WaitCallback_Context（System.Object）在System.Threading.ExecutionContext.RunInternal（System.Threading.ExecutionContext，System.Threading.ContextCallback，System.Object，布尔值）在System.Threading.ExecutionContext.Run（System.Threading.ExecutionContext，System.Threading.ContextCallback，System.Object，布尔值）在System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem（）在System.Threading.ThreadPoolWorkQueue.Dispatch（）在System.Threading._ThreadPoolWaitCallback.PerformWaitCallback（）

这是我的代码，请仔细阅读

            public async System.Threading.Tasks.Task Watch()
            {
                //Configuration options for a public client application (desktop/mobile app)
                var pcaOptions = new PublicClientApplicationOptions
                {
                    ClientId = ConfigurationManager.AppSettings["appId"],
                    TenantId = ConfigurationManager.AppSettings["tenantId"]
                };

                //Creates a PublicClientApplicationBuilder from a clientID.
                var pca = PublicClientApplicationBuilder
                .CreateWithApplicationOptions(pcaOptions).Build();

                //access permission.
                var ewsScopes = new string[] { "https://outlook.office.com/EWS.AccessAsUser.All" };

                try
                {

                    // Make the interactive token request
                    var authResult = await pca.AcquireTokenByUsernamePassword(ewsScopes, EmailID, ConvertToSecureString(Password)).ExecuteAsync();
                    //var authResult = await pca.AcquireTokenInteractive(ewsScopes).ExecuteAsync();

                    // Configure the ExchangeService with the access token
                    ewsClient = new ExchangeService();
                    ewsClient.Url = new Uri("https://outlook.office365.com/EWS/Exchange.asmx");
                    ewsClient.Credentials = new OAuthCredentials(authResult.AccessToken);
                   
                    Console.WriteLine("New Email details will display below:-");
                    // Make an EWS call                                
                    CreateStreamingSubscription(); //Creating subscription.               
                }
                catch (MsalException ex)
                {
                    Email.onErrorOccur(ex.Message, "EmailExchange Watch event MsalException", ex.StackTrace);                    
                }
                catch (Exception ex)
                {
                    Email.onErrorOccur(ex.Message, "EmailExchange Watch event", ex.StackTrace);                    
                }

            }

Answer 1

在代码上，您在导致异常的CreateStreamingSubscription中发布了内容，它只是被您发布的代码块所捕获，该代码块不执行任何Exchange请求而只是进行身份验证。您能否提供有关发生时间的更多详细信息，例如，代码会在一段时间内起作用并且会发生还是根本不起作用？如果它不起作用，可能是TLS 1.2，所以我建议在其中添加

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12

该进程由于未处理的异常而终止。 ews中的System.Net.HttpWebRequest.GetResponse（）异常

1 个答案: