0
我們擁有訪問AWS DynamoDB中的AppSettings的C＃代碼（使用AWS .NET SDK），它在我們的開發PC上完美運行。但是，當我們將代碼放在EC2實例上時，我們會間歇性地收到錯誤;有時我們可以訪問我們的DynamoDB表，有時我們不能。我們編寫了一個小程序，刪除了我們所有的其他代碼，並使用AmazonDynamoDBClient調用ListTables方法。我們將精簡的代碼放在我們的EC2實例上，並從命令行運行它，並且像我們的常規應用程序一樣，它有時可用，有時不起作用。我們的精簡代碼是：爲什麼我們會收到連接到AWS DynamoDB的間歇性錯誤？
class Program
{
static void Main(string[] args)
{
try
{
AmazonDynamoDBClient client = new AmazonDynamoDBClient(RegionEndpoint.USEast1);
ListTablesRequest request = new ListTablesRequest();
ListTablesResponse response = client.ListTables(request);
foreach (var tableName in response.TableNames)
{
Console.WriteLine("{0}", tableName);
}
Console.ReadKey();
}
catch (Exception e)
{
Exception e1 = e;
while (e1 != null)
{
Console.WriteLine(e1.GetType().ToString());
Console.WriteLine(e1.Message);
Console.WriteLine(e1.StackTrace);
e1 = e1.InnerException;
}
}
}
正如您所看到的，它非常簡單。這些是我們（有時）得到的錯誤：
Amazon.Runtime.AmazonServiceException
A WebException with status SendFailure was thrown.
at Amazon.Runtime.Internal.WebExceptionHandler.HandleException(IExecutionContext executionContext, WebException exception) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\_bcl\WebExceptionHandler.cs:line 44
at Amazon.Runtime.Internal.ExceptionHandler`1.Handle(IExecutionContext executionContext, Exception exception) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ExceptionHandler.cs:line 38
at Amazon.Runtime.Internal.ErrorHandler.ProcessException(IExecutionContext executionContext, Exception exception) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 204
at Amazon.Runtime.Internal.ErrorHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 78
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CallbackHandler.cs:line 45
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.Signer.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\Signer.cs:line 38
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CredentialsRetriever.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CredentialsRetriever.cs:line 72
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.RetryHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\RetryHandler\RetryHandler.cs:line 84
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CallbackHandler.cs:line 45
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.EndpointResolver.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\EndpointResolver.cs:line 34
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.Marshaller.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\Marshaller.cs:line 37
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CallbackHandler.cs:line 45
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.ErrorCallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\ErrorCallbackHandler.cs:line 44
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.MetricsHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\MetricsHandler.cs:line 40
at Amazon.Runtime.Internal.RuntimePipeline.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\RuntimePipeline.cs:line 135
at Amazon.Runtime.AmazonServiceClient.Invoke[TRequest,TResponse](TRequest request, IMarshaller`2 marshaller, ResponseUnmarshaller unmarshaller) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\AmazonServiceClient.cs:line 192
at Amazon.DynamoDBv2.AmazonDynamoDBClient.ListTables(ListTablesRequest request) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Services\DynamoDBv2\Generated\_bcl45\AmazonDynamoDBClient.cs:line 2657
at DynamoDBTesting.Program.Main(String[] args) in c:\Users\mc77vhh8\Documents\Visual Studio 2013\Projects\WindowsService2\DynamoDBTesting\Program.cs:line 59
14:16:48 Example Amazon.Runtime.AmazonServiceException
14:16:48 Example A WebException with status SendFailure was thrown.
14:16:48 Example at Amazon.Runtime.Internal.WebExceptionHandler.HandleException(IExecutionContext executionContext, WebException exception) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\_bcl\WebExceptionHandler.cs:line
at Amazon.Runtime.Internal.ExceptionHandler`1.Handle(IExecutionContext executionContext, Exception exception) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ExceptionHandler.cs:line 38
at Amazon.Runtime.Internal.ErrorHandler.ProcessException(IExecutionContext executionContext, Exception exception) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 204
at Amazon.Runtime.Internal.ErrorHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 78
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CallbackHandler.cs:line 45
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.Signer.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\Signer.cs:line 38
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CredentialsRetriever.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CredentialsRetriever.cs:line 72
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.RetryHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\RetryHandler\RetryHandler.cs:line 84
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CallbackHandler.cs:line 45
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.EndpointResolver.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\EndpointResolver.cs:line 34
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.Marshaller.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\Marshaller.cs:line 37
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.CallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CallbackHandler.cs:line 45
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.ErrorCallbackHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\ErrorCallbackHandler.cs:line 44
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.MetricsHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\MetricsHandler.cs:line 40
at Amazon.Runtime.Internal.RuntimePipeline.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\RuntimePipeline.cs:line 135
at Amazon.Runtime.AmazonServiceClient.Invoke[TRequest,TResponse](TRequest request, IMarshaller`2 marshaller, ResponseUnmarshaller unmarshaller) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\AmazonServiceClient.cs:line 192
at Amazon.DynamoDBv2.AmazonDynamoDBClient.ListTables(ListTablesRequest request) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Services\DynamoDBv2\Generated\_bcl45\AmazonDynamoDBClient.cs:line 2657
at DynamoDBTesting.Program.Main(String[] args) in c:\Users\mc77vhh8\Documents\Visual Studio 2013\Projects\WindowsService2\DynamoDBTesting\Program.cs:line 59
System.Net.WebException
The underlying connection was closed: An unexpected error occurred on a send.
at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)
at System.Net.HttpWebRequest.GetRequestStream()
at Amazon.Runtime.Internal.HttpRequest.GetRequestContent() in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\HttpHandler\_bcl\HttpWebRequestFactory.cs:line 128
at Amazon.Runtime.Internal.HttpHandler`1.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\HttpHandler\HttpHandler.cs:line 81
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.Unmarshaller.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\Unmarshaller.cs:line 48
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.ErrorHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 72
14:16:48 Example Amazon.Runtime.AmazonServiceException
14:16:48 Example The underlying connection was closed: An unexpected error occurred on a send.
14:16:48 Example at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)
at System.Net.HttpWebRequest.GetRequestStream()
at Amazon.Runtime.Internal.HttpRequest.GetRequestContent() in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\HttpHandler\_bcl\HttpWebRequestFactory.cs:line 128
at Amazon.Runtime.Internal.HttpHandler`1.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\HttpHandler\HttpHandler.cs:line 81
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.Unmarshaller.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\Unmarshaller.cs:line 48
at Amazon.Runtime.Internal.PipelineHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\PipelineHandler.cs:line 55
at Amazon.Runtime.Internal.ErrorHandler.InvokeSync(IExecutionContext executionContext) in E:\JenkinsWorkspaces\v3-stage-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 72
System.IO.IOException
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Net.TlsStream.CallProcessAuthentication(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result)
at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.ConnectStream.WriteHeaders(Boolean async)
14:16:48 Example Amazon.Runtime.AmazonServiceException
14:16:48 Example Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
14:16:48 Example at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Net.TlsStream.CallProcessAuthentication(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result)
at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.ConnectStream.WriteHeaders(Boolean async)
System.Net.Sockets.SocketException
An existing connection was forcibly closed by the remote host
at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
14:16:48 Example Amazon.Runtime.AmazonServiceException
14:16:48 Example An existing connection was forcibly closed by the remote host
14:16:48 Example at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
我們不確定爲什麼會發生這種情況。我們驗證了我們在實例上的角色具有權限，但由於代碼有時可以工作，所以我們確實不需要這樣做。任何見解都會受到歡迎。
這可能與DynamoDB不相關。您可能需要查看EC2實例的供應方式以及您是否使用VPC。檢查您是否使用EC2 classic或EC2 VPC。 EC2實例和DynamoDB是否在同一區域？ – notionquest
@notionquest - 我們有一個VPC，我們的EC2實例在VPC中運行。我們的EC2實例位於us-east-1a，我們的DynamoDB表位於美國東部。 – TortillaCurtain
首先你必須假定服務不可靠。據說，你應該實現某種重試邏輯，並在N次嘗試後失敗。依靠其他公司服務的一件事就是你無法控制。你必須優雅地失敗，並建立它知道服務可能不存在你打電話時。 – Ryan