EWS : Unable to read data from the transport connection: The connection was closed

问题

    var message = EmailMessage.Bind(exchangeService, itemid,
                                       new PropertySet(
                                                       ItemSchema.Attachments));




    exchangeService.TraceListener=new TraceListener();
    exchangeService.TraceEnabled = true;
    message.Load(new PropertySet(ItemSchema.MimeContent)); // Getting exception here.
   //  File.WriteAllBytes("email.eml", message.MimeContent.Content);

I am getting the below exception when trying to load the mime content.

Microsoft.Exchange.WebServices.Data.ServiceRequestException occurred
HResult=-2146233088 Message=The request failed. Unable to read data from the transport connection: The connection was closed.
Source=Microsoft.Exchange.WebServices StackTrace: at Microsoft.Exchange.WebServices.Data.SimpleServiceRequestBase.ReadResponse(IEwsHttpWebResponse response) at Microsoft.Exchange.WebServices.Data.SimpleServiceRequestBase.InternalExecute() at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest1.Execute() at Microsoft.Exchange.WebServices.Data.ExchangeService.InternalLoadPropertiesForItems(IEnumerable1 items, PropertySet propertySet, ServiceErrorHandling errorHandling) at Microsoft.Exchange.WebServices.Data.Item.InternalLoad(PropertySet propertySet) at Microsoft.Exchange.WebServices.Data.ServiceObject.Load(PropertySet propertySet) at ConsoleApplication1.Program.Main(String[] args) in f:\Projects\EmailArchiving\ConsoleApplication1\ConsoleApplication1\Program.cs:line 34 InnerException: System.IO.IOException HResult=-2146232800 Message=Unable to read data from the transport connection: The connection was closed. Source=System StackTrace: at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.IO.Compression.DeflateStream.Read(Byte[] array, Int32 offset, Int32 count) at System.IO.Compression.GZipStream.Read(Byte[] array, Int32 offset, Int32 count) at System.Xml.XmlTextReaderImpl.ReadData() at System.Xml.XmlTextReaderImpl.ParseText(Int32& startPos, Int32& endPos, Int32& outOrChars) at System.Xml.XmlTextReaderImpl.ParseText() at System.Xml.XmlTextReaderImpl.ParseElementContent() at System.Xml.XmlTextReaderImpl.Read() at System.Xml.XmlTextReader.Read() at System.Xml.XmlCharCheckingReader.Read() at Microsoft.Exchange.WebServices.Data.EwsXmlReader.Read() at Microsoft.Exchange.WebServices.Data.ComplexProperty.InternalLoadFromXml(EwsServiceXmlReader reader, XmlNamespace xmlNamespace, String xmlElementName, Func2 readAction) at Microsoft.Exchange.WebServices.Data.ComplexProperty.LoadFromXml(EwsServiceXmlReader reader, XmlNamespace xmlNamespace, String xmlElementName) at Microsoft.Exchange.WebServices.Data.ComplexProperty.LoadFromXml(EwsServiceXmlReader reader, String xmlElementName) at Microsoft.Exchange.WebServices.Data.ComplexPropertyDefinitionBase.InternalLoadFromXml(EwsServiceXmlReader reader, PropertyBag propertyBag) at Microsoft.Exchange.WebServices.Data.ComplexPropertyDefinitionBase.LoadPropertyValueFromXml(EwsServiceXmlReader reader, PropertyBag propertyBag) at Microsoft.Exchange.WebServices.Data.PropertyBag.LoadFromXml(EwsServiceXmlReader reader, Boolean clear, PropertySet requestedPropertySet, Boolean onlySummaryPropertiesRequested) at Microsoft.Exchange.WebServices.Data.ServiceObject.LoadFromXml(EwsServiceXmlReader reader, Boolean clearPropertyBag, PropertySet requestedPropertySet, Boolean summaryPropertiesOnly) at Microsoft.Exchange.WebServices.Data.EwsServiceXmlReader.ReadServiceObjectsCollectionFromXml[TServiceObject](XmlNamespace collectionXmlNamespace, String collectionXmlElementName, GetObjectInstanceDelegate1 getObjectInstanceDelegate, Boolean clearPropertyBag, PropertySet requestedPropertySet, Boolean summaryPropertiesOnly) at Microsoft.Exchange.WebServices.Data.EwsServiceXmlReader.ReadServiceObjectsCollectionFromXml[TServiceObject](String collectionXmlElementName, GetObjectInstanceDelegate1 getObjectInstanceDelegate, Boolean clearPropertyBag, PropertySet requestedPropertySet, Boolean summaryPropertiesOnly) at Microsoft.Exchange.WebServices.Data.GetItemResponse.ReadElementsFromXml(EwsServiceXmlReader reader) at Microsoft.Exchange.WebServices.Data.ServiceResponse.LoadFromXml(EwsServiceXmlReader reader, String xmlElementName) at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest1.ParseResponse(EwsServiceXmlReader reader) at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.ReadResponse(EwsServiceXmlReader ewsXmlReader) at Microsoft.Exchange.WebServices.Data.SimpleServiceRequestBase.ReadResponseXml(Stream responseStream) at Microsoft.Exchange.WebServices.Data.SimpleServiceRequestBase.ReadResponse(IEwsHttpWebResponse response) InnerException:

What can be the reasons for this exception?

来源：https://stackoverflow.com/questions/23193436/ews-unable-to-read-data-from-the-transport-connection-the-connection-was-clos