WCF服务-与消息/对象大小有关

Question

I have wcf service (S1) as client and another Wcf service(S2) as server. S1 consume S2 over net.tcp. S2 has one operation, which return a complex object with most of it's contents are string. The average size of this object is between 7-8 MB.

Recently I had to add more string contents to the actual object graph. This cause S2 to return following error

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 '00:05:00'. 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 System.ServiceModel.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)

However, everything works as expected when I remove some of the string contents from the object graph.

After doing bit of a homework,I was managed to land on a conclusion that, it has something to do with the size of the returned object. This made me to revise my client and service configuration/quota's.

However, I have no luck even after modifying the client and service especially size related attributes.

Can someone guide me on this? Please ask me for more information if needed.

Thanks in advance.

Client (S1)

<netTcpBinding>
        <binding name="NetTcp" closeTimeout="00:05:00"
          openTimeout="00:05:00" receiveTimeout="00:10:00" sendTimeout="00:05:00"
          transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions"
          hostNameComparisonMode="StrongWildcard" listenBacklog="10" maxBufferPoolSize="2147483647"
          maxBufferSize="2147483647" maxConnections="10" maxReceivedMessageSize="2147483647">
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
            maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="16384" />
          <reliableSession ordered="true" inactivityTimeout="00:10:00"
            enabled="false" />
          <security mode="None">
            <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
            <message clientCredentialType="Windows" />
          </security>
        </binding>
      </netTcpBinding>
    <client>
          <endpoint address="net.tcp://xxxxxxxx/xxxxxxService"
            binding="netTcpBinding" bindingConfiguration="NetTcp" behaviorConfiguration="RBehavior"  
            contract="IService" name="NetTcp" />
        </client>
        <services/>

        <behaviors>
          <serviceBehaviors>
            <behavior name="NSBehavior">
              <etwTracking profileName="EndToEndMonitoringProfile"/>
              <serviceMetadata httpGetEnabled="false"/>
              <serviceDebug includeExceptionDetailInFaults="true"/>
            </behavior> 

          </serviceBehaviors>
        <endpointBehaviors>                                   
                <behavior name="RBehavior">
     **<dataContractSerializer maxItemsInObjectGraph="2147483647" />**
                </behavior>
            </endpointBehaviors>
        </behaviors>

        <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
      </system.serviceModel>

     <system.webServer>
        <modules runAllManagedModulesForAllRequests="true"/>
      </system.webServer>

Server (S2)

<system.serviceModel>
    <bindings>
      <netTcpBinding>
        <binding name="netTcp" closeTimeout="00:03:00"
          openTimeout="00:03:00" receiveTimeout="00:10:00" sendTimeout="00:03:00"
          transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions"
          hostNameComparisonMode="StrongWildcard" listenBacklog="10" maxBufferPoolSize="20000000"
          maxBufferSize="20000000" maxConnections="10" maxReceivedMessageSize="20000000">
          <readerQuotas maxDepth="32" maxStringContentLength="20000000"
            maxArrayLength="20000000" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
          <reliableSession ordered="true" inactivityTimeout="00:10:00"
            enabled="false" />
          <security mode="None">
            <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
            <message clientCredentialType="Windows" />
          </security>
        </binding>
      </netTcpBinding>
    </bindings>

    <services>
      <service name="Engine.Rules"
               behaviorConfiguration="REServiceBehavior">
        <host>
          <baseAddresses>
            <add baseAddress="net.tcp://xxxxx:8005/Service"/>
          </baseAddresses>
        </host>
        <endpoint address=""
                  binding="netTcpBinding" bindingConfiguration="netTcp"
                  contract="Ixxxx" />
        <endpoint address="mex"
                  binding="mexTcpBinding"
                  contract="IMetadataExchange" />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="REServiceBehavior">
          <serviceMetadata httpGetEnabled="false"/>
      **<dataContractSerializer maxItemsInObjectGraph="2147483647"/>**
          <serviceDebug includeExceptionDetailInFaults="true"/>  
          <serviceThrottling maxConcurrentSessions="1000"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

Update : As per @ErikFunkenbusch's sensible support, I am attaching service trace information.

<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 '00:05:00'. ---&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 System.ServiceModel.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
   --- End of inner exception stack trace ---</ExceptionString>
<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 System.ServiceModel.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 System.ServiceModel.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)</ExceptionString>
<NativeErrorCode>2746</NativeErrorCode>
</InnerException>
</Exception>

Answer 1

Have you tried increasing the send and receive timeout values? You're sending a lot of data over the wire (7-8MB) and 5 seconds may not be enough time to complete that transaction. Try setting them to something like 30 seconds and then working from there.

E:

<binding name="netTcp" closeTimeout="00:30:00"
      openTimeout="00:30:00" receiveTimeout="00:30:00" sendTimeout="00:30:00">

That is what I'm referring to, specifically.