c# - Azure Service Bus 経由で WCF サービスから返されたストリームを読み取るときの IOException および SocketException

Question

リモートマシンにある WCF サービスホストから大きな zip ファイル (>200 MB) をダウンロードするダウンロードアプリケーションを作成しました。クライアントは、 "nettcprelaybinding"を使用して、azure サービスバス経由でこの WCF サービスと通信します。

zip ファイルをダウンロードするために、WCF サービスはストリームを作成して返します。クライアントでは、このストリームを使用して zip ファイルに書き込みます。

しかし、このストリームの読み取り中に、「ストリームの読み取り中に例外がスローされました」というIOExceptionがランダムに取得されます。. 内部例外をよく見ると、SocketException (s)が並んでいます。

以下は、クライアントの WCF トレースユーティリティからの XML スタックトレースです。

<Exception>
<ExceptionType>System.IO.IOException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>An exception has been thrown when reading the stream.</Message>
<StackTrace>
at System.ServiceModel.Dispatcher.StreamFormatter.MessageBodyStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at RPKDDM.ViewModel.SearchQueueViewModel.DownloadBackground(Object sender, DoWorkEventArgs e)
at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)
at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]&amp; outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.ThreadPoolCallBack(Object o)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(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.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
</StackTrace>
<ExceptionString>System.IO.IOException: An exception has been thrown when reading the stream. ---&gt; System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'. ---&gt; System.IO.IOException: The read operation failed, see inner exception. ---&gt; System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'. ---&gt; 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 Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   --- End of inner exception stack trace ---
   at Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   at Microsoft.ServiceBus.Channels.SocketConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.ConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.Security._SslStream.StartFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   --- End of inner exception stack trace ---
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at Microsoft.ServiceBus.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   --- End of inner exception stack trace ---
   at Microsoft.ServiceBus.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.HybridConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   at Microsoft.ServiceBus.Channels.HybridConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.DelegatingConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.SingletonConnectionReader.SingletonInputConnectionStream.ReadCore(Byte[] buffer, Int32 offset, Int32 count)
   at Microsoft.ServiceBus.Channels.SingletonConnectionReader.SingletonInputConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at Microsoft.ServiceBus.Channels.MaxMessageSizeStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.Xml.XmlBufferReader.TryEnsureBytes(Int32 count)
   at System.Xml.XmlBufferReader.EnsureBytes(Int32 count)
   at System.Xml.XmlBufferReader.ReadBytes(Int32 count)
   at System.Xml.XmlBinaryReader.ReadText(XmlTextNode textNode, ValueHandleType type, Int32 length)
   at System.Xml.XmlBinaryReader.ReadPartialBinaryText(Boolean withEndElement, Int32 length)
   at System.Xml.XmlBinaryReader.ReadNode()
   at System.Xml.XmlBinaryReader.Read()
   at System.Xml.XmlBaseReader.MoveToContent()
   at System.ServiceModel.Dispatcher.StreamFormatter.MessageBodyStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   --- End of inner exception stack trace ---</ExceptionString>
<InnerException>
<ExceptionType>System.ServiceModel.CommunicationException, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'.</Message>
<StackTrace>
at Microsoft.ServiceBus.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at Microsoft.ServiceBus.Channels.HybridConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
at Microsoft.ServiceBus.Channels.HybridConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at Microsoft.ServiceBus.Channels.DelegatingConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at Microsoft.ServiceBus.Channels.SingletonConnectionReader.SingletonInputConnectionStream.ReadCore(Byte[] buffer, Int32 offset, Int32 count)
at Microsoft.ServiceBus.Channels.SingletonConnectionReader.SingletonInputConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at Microsoft.ServiceBus.Channels.MaxMessageSizeStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.Xml.XmlBufferReader.TryEnsureBytes(Int32 count)
at System.Xml.XmlBufferReader.EnsureBytes(Int32 count)
at System.Xml.XmlBufferReader.ReadBytes(Int32 count)
at System.Xml.XmlBinaryReader.ReadText(XmlTextNode textNode, ValueHandleType type, Int32 length)
at System.Xml.XmlBinaryReader.ReadPartialBinaryText(Boolean withEndElement, Int32 length)
at System.Xml.XmlBinaryReader.ReadNode()
at System.Xml.XmlBinaryReader.Read()
at System.Xml.XmlBaseReader.MoveToContent()
at System.ServiceModel.Dispatcher.StreamFormatter.MessageBodyStream.Read(Byte[] buffer, Int32 offset, Int32 count)
</StackTrace>
<ExceptionString>System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'. ---&gt; System.IO.IOException: The read operation failed, see inner exception. ---&gt; System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'. ---&gt; 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 Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   --- End of inner exception stack trace ---
   at Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   at Microsoft.ServiceBus.Channels.SocketConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.ConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.Security._SslStream.StartFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   --- End of inner exception stack trace ---
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at Microsoft.ServiceBus.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   --- End of inner exception stack trace ---
   at Microsoft.ServiceBus.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.HybridConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   at Microsoft.ServiceBus.Channels.HybridConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.DelegatingConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.SingletonConnectionReader.SingletonInputConnectionStream.ReadCore(Byte[] buffer, Int32 offset, Int32 count)
   at Microsoft.ServiceBus.Channels.SingletonConnectionReader.SingletonInputConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at Microsoft.ServiceBus.Channels.MaxMessageSizeStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.Xml.XmlBufferReader.TryEnsureBytes(Int32 count)
   at System.Xml.XmlBufferReader.EnsureBytes(Int32 count)
   at System.Xml.XmlBufferReader.ReadBytes(Int32 count)
   at System.Xml.XmlBinaryReader.ReadText(XmlTextNode textNode, ValueHandleType type, Int32 length)
   at System.Xml.XmlBinaryReader.ReadPartialBinaryText(Boolean withEndElement, Int32 length)
   at System.Xml.XmlBinaryReader.ReadNode()
   at System.Xml.XmlBinaryReader.Read()
   at System.Xml.XmlBaseReader.MoveToContent()
   at System.ServiceModel.Dispatcher.StreamFormatter.MessageBodyStream.Read(Byte[] buffer, Int32 offset, Int32 count)</ExceptionString>
<DataItems>
<Data>
<Key>Microsoft.ServiceBus</Key>
<Value>Microsoft.ServiceBus</Value>
</Data>
</DataItems>
<InnerException>
<ExceptionType>System.IO.IOException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>The read operation failed, see inner exception.</Message>
<StackTrace>
at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at Microsoft.ServiceBus.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
</StackTrace>
<ExceptionString>System.IO.IOException: The read operation failed, see inner exception. ---&gt; System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'. ---&gt; 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 Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   --- End of inner exception stack trace ---
   at Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   at Microsoft.ServiceBus.Channels.SocketConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.ConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.Security._SslStream.StartFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   --- End of inner exception stack trace ---
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security.SslStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at Microsoft.ServiceBus.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)</ExceptionString>
<InnerException>
<ExceptionType>System.ServiceModel.CommunicationException, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'.</Message>
<StackTrace>
at Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
at Microsoft.ServiceBus.Channels.SocketConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at Microsoft.ServiceBus.Channels.ConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security._SslStream.StartFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
</StackTrace>
<ExceptionString>System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '22:59:58.0620000'. ---&gt; 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 Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   --- End of inner exception stack trace ---
   at Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   at Microsoft.ServiceBus.Channels.SocketConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at Microsoft.ServiceBus.Channels.ConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
   at System.Net.Security._SslStream.StartFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)</ExceptionString>
<DataItems>
<Data>
<Key>Microsoft.ServiceBus</Key>
<Value>Microsoft.ServiceBus</Value>
</Data>
</DataItems>
<InnerException>
<ExceptionType>System.Net.Sockets.SocketException, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>An existing connection was forcibly closed by the remote host</Message>
<StackTrace>
at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
</StackTrace>
<ExceptionString>System.Net.Sockets.SocketException (0x80004005): 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 Microsoft.ServiceBus.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)</ExceptionString>
<NativeErrorCode>2746</NativeErrorCode>
</InnerException>
</InnerException>
</InnerException>
</InnerException>
</Exception>

ストリーム契約

[MessageContract]

public class StreamFileInfo : IDisposable
{
    [MessageHeader(MustUnderstand = true)]
    public string FileName;

    [MessageHeader(MustUnderstand = true)]
    public long Length;

    [MessageHeader(MustUnderstand = true)]
    public bool IsEmpty;

    [MessageHeader(MustUnderstand = true)]
    public string QueueNumber;

    [MessageBodyMember(Order = 1)]
    public Stream FileByteStream;

    public void Dispose()
    {
        if (FileByteStream != null)
        {
            FileByteStream.Close();
            FileByteStream.Dispose();
            FileByteStream = null;
        }
    }
}

ストリームを読み取るためのコード:

    int bufferSize = 4096;
    byte[] buffer = new byte[bufferSize];

    int bytesRead = streamInfo.FileByteStream.Read(buffer, 0, buffer.Length);
    int totalBytesRead += bytesRead;

    while (bytesRead > 0)
{
//WRITE BUFFER TO ZIP FILE
zipFileStream.Write(buffer, 0, bytesRead);
zipFileStream.Flush();
buffer = new byte[bufferSize];

//READ BYTES FROM SERVER STREAM
bytesRead = streamInfo.FileByteStream.Read(buffer, 0, buffer.Length);
totalBytesRead += bytesRead;

}

読み取りプロセスが終了した後、このストリームを最終ブロックに配置しています。

クライアントバインディング:

<netTcpRelayBinding>
        <binding name="default"
                 connectionMode="Hybrid"
                 maxReceivedMessageSize="2147483647"
                 maxBufferPoolSize="0"          
                 transferMode="Streamed"
                 closeTimeout="01:00:00"
                 openTimeout="00:30:00"
                 sendTimeout="05:00:00"
                 receiveTimeout="05:00:00"
                 maxConnections="2500"
                 listenBacklog="200">


          <security mode="None"/>
          <readerQuotas maxBytesPerRead="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" />
          <reliableSession enabled="false" ordered="true" inactivityTimeout="00:30:00"/>
        </binding>
      </netTcpRelayBinding>

サーバーにも同様のバインディングが存在します サービスでは、最大値を設定してスロットリングも有効にしました。

サービス動作の構成:

<services>
      <!-- Application Service -->
      <service name="DDMService.DDMBaseService" behaviorConfiguration="ThrottleBehavior">
        <endpoint name="RelayEndpoint"
                  contract="IBaseService"
                  binding="netTcpRelayBinding"
                  bindingConfiguration="default"
                  behaviorConfiguration="asyncBehavior"
                  address=""/>        
      </service>
    </services>

    <behaviors>
      <serviceBehaviors>
        <behavior name="ThrottleBehavior">
          <serviceThrottling maxConcurrentCalls="2147483647" maxConcurrentInstances="2147483647" maxConcurrentSessions="2147483647"/>
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="asyncBehavior">
          <dispatcherSynchronization asynchronousSendEnabled="true"/>
        </behavior>
      </endpointBehaviors>
    </behaviors>

なぜこれが起こっているのか、私にはまったくわかりません。Service Bus のエラー、既知の問題、または Service Bus のタイムアウトが原因ですか? サービスバスクォータについては、次のリンクを参照しています: http://msdn.microsoft.com/library/ee732538.aspx

ここで何が間違っていますか？ストリームを読み取るために適切なバッファサイズを設定する必要がありますか? またはmaxBufferSizeとmaxBufferPoolSizeを設定する必要がありますか?

maxBufferSizeとmaxBufferPoolSizeを 2147483647 に設定しようとしましたが、それは役に立ちません。

大きなファイルのストリーミングについては、次のリンクを参照しています: http://msdn.microsoft.com/en-us/library/ms733742.aspx

私は本当にうんざりしていて、なぜこのエラーが発生するのか理解できません。助けてください。

編集: 上記で私を助けることができない場合は、IOException が発生したときに同じ時点からストリーミングを再開する方法を教えてください。それは大いに役立つでしょう。どうもありがとう。

score 0 · Accepted Answer

Azure Blob Storage から優れたファイルストリーミング機能が得られることはご存知ですよね?

ファイルが既に zip ファイルである場合は、WCF レイヤーを多かれ少なかれ削除できるため、それを調べます。

そうでない場合は、このWCF Streaming large data (500MB / 1GB) on a self-hosted serviceを調べてみてください

c# - Azure Service Bus 経由で WCF サービスから返されたストリームを読み取るときの IOException および SocketException

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